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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2018	Aug. 09, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Trading Symbol	CRK
Entity Registrant Name	COMSTOCK RESOURCES INC
Entity Central Index Key	0000023194
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		16,278,689

CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Cash and Cash Equivalents	$ 158,378	$ 61,255
Accounts Receivable:
Oil and gas sales	21,518	26,700
Joint interest operations	17,771	11,872
Derivative Financial Instruments		1,318
Assets Held For Sale		198,615
Other Current Assets	4,482	2,745
Total current assets	202,149	302,505
Property and Equipment:
Oil and gas properties, successful efforts method	2,776,179	2,631,750
Other	18,921	18,918
Accumulated depreciation, depletion and amortization	(2,096,410)	(2,042,739)
Net property and equipment	698,690	607,929
Income Taxes Receivable	19,086	19,086
Other Assets	1,408	899
Total Assets	921,333	930,419
LIABILITIES AND STOCKHOLDERS' DEFICIT
Accounts Payable	153,387	126,034
Accrued Expenses	35,456	42,455
Derivative Financial Instruments	230
Total current liabilities	189,073	168,489
Long-term Debt	1,153,333	1,110,529
Deferred Income Taxes	10,726	10,266
Reserve for Future Abandonment Costs	10,622	10,407
Total liabilities	1,363,754	1,299,691
Commitments and Contingencies
Stockholders' Deficit:
Common stock — $0.50 par, 75,000,000 shares authorized, 16,261,017 and 15,427,561 shares outstanding at June 30, 2018 and December 31, 2017, respectively	8,131	7,714
Common stock warrants	441	3,557
Additional paid-in capital	552,135	546,696
Accumulated deficit	(1,003,128)	(927,239)
Total stockholders' deficit	(442,421)	(369,272)
Total liabilities and stockholders' deficit	$ 921,333	$ 930,419

CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.50	$ 0.50
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares outstanding	16,261,017	15,427,561

CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Total oil and gas sales	$ 61,449	$ 61,471	$ 134,042	$ 115,272
Operating expenses:
Production taxes	1,112	1,143	2,952	2,240
Gathering and transportation	4,398	3,545	8,732	7,673
Lease operating	7,948	9,433	17,721	19,322
Depreciation, depletion and amortization	26,798	30,321	53,950	60,226
General and administrative	6,956	6,559	12,972	12,960
Loss on sale of oil and gas properties	6,838		35,438
Total operating expenses	54,050	51,001	131,765	102,421
Operating income	7,399	10,470	2,277	12,851
Other income (expenses):
Gain (loss) from derivative financial instruments	(1,638)	5,295	964	13,155
Other income	327	65	393	228
Interest expense	(40,213)	(36,755)	(79,063)	(69,655)
Total other income (expenses)	(41,524)	(31,395)	(77,706)	(56,272)
Loss before income taxes	(34,125)	(20,925)	(75,429)	(43,421)
Benefit from (provision for) income taxes	122	(517)	(460)	(952)
Net loss	$ (34,003)	$ (21,442)	$ (75,889)	$ (44,373)
Net loss per share – basic and diluted	$ (2.22)	$ (1.45)	$ (4.99)	$ (3.06)
Weighted average shares outstanding – basic and diluted	15,340	14,749	15,212	14,488
Natural Gas Sales
Revenues:
Total oil and gas sales	$ 56,265	$ 50,437	$ 115,808	$ 91,377
Oil Sales
Revenues:
Total oil and gas sales	$ 5,184	$ 11,034	$ 18,234	$ 23,895

CONSOLIDATED STATEMENT OF STOCKHOLDERS' DEFICIT (Unaudited) - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands	Total	Common Stock	Common Stock Warrants	Additional Paid-in Capital	Accumulated Deficit
Beginning Balance at Dec. 31, 2017	$ (369,272)	$ 7,714	$ 3,557	$ 546,696	$ (927,239)
Beginning Balance, Shares at Dec. 31, 2017		15,428,000
Stock-based compensation	3,109	$ 261		2,848
Stock-based compensation, Shares		523,000
Income tax withholdings related to equity awards	$ (369)	$ (26)		(343)
Income tax withholdings related to equity awards, Shares		(53,000)
Common stock warrants exercised		$ 182	(3,116)	2,934
Common stock warrants exercised, Shares	363,638	363,000
Net loss	$ (75,889)				(75,889)
Ending Balance at Jun. 30, 2018	$ (442,421)	$ 8,131	$ 441	$ 552,135	$ (1,003,128)
Ending Balance, Shares at Jun. 30, 2018		16,261,000

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (75,889)	$ (44,373)
Adjustments to reconcile net loss to net cash provided by operating activities:
Deferred income taxes	426	855
Loss on sale of oil and gas properties	35,438
Depreciation, depletion and amortization	53,950	60,226
Gain on derivative financial instruments	(964)	(13,155)
Cash settlements of derivative financial instruments	2,512	1,896
Amortization of debt discount, premium and issuance costs	23,267	15,000
Interest paid in-kind	20,014	18,594
Stock-based compensation	3,109	2,815
Increase in accounts receivable	(717)	(9,657)
Decrease (increase) in other current assets	641	(908)
Increase in accounts payable and accrued expenses	25,211	24,222
Net cash provided by operating activities	86,998	55,515
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(90,555)	(85,829)
Deposits on property acquisitions	(2,139)
Proceeds from sale of oil and gas properties	103,593
Net cash provided by (used for) investing activities	10,899	(85,829)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under bank credit facility	49,679
Repayments under bank credit facility	(49,679)
Common stock warrants exercised		2
Debt issuance costs	(405)
Income taxes related to equity awards	(369)	(271)
Net cash used for financing activities	(774)	(269)
Net increase (decrease) in cash and cash equivalents	97,123	(30,583)
Cash and cash equivalents, beginning of period	61,255	65,904
Cash and cash equivalents, end of period	$ 158,378	$ 35,321

Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES –

Basis of Presentation

In management's opinion, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly the financial position of Comstock Resources, Inc. and its subsidiaries (collectively, "Comstock" or the "Company") as of June 30, 2018, and the related results of operations and cash flows for the three months and six months ended June 30, 2018 and 2017. Net loss and comprehensive loss are the same in all periods presented. All adjustments are of a normal recurring nature unless otherwise disclosed.

The accompanying unaudited consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States have been omitted pursuant to those rules and regulations, although Comstock believes that the disclosures made are adequate to make the information presented not misleading. These unaudited consolidated financial statements should be read in conjunction with the financial statements and notes thereto included in Comstock's Annual Report on Form 10-K for the year ended December 31, 2017.

The results of operations for the three months and six months ended June 30, 2018 are not necessarily an indication of the results expected for the full year.

These unaudited consolidated financial statements include the accounts of Comstock and its wholly-owned subsidiaries.

Property and Equipment

The Company follows the successful efforts method of accounting for its oil and gas properties. Costs incurred to acquire oil and gas leasehold are capitalized.

On April 27 2018, Comstock completed the sale of its producing Eagle Ford shale oil and gas properties in McMullen, LaSalle, Frio, Atascosa, Wilson, and Karnes counties, Texas for $125.0 million. The sale was effective November 1, 2017 and the estimated net cash flow from the properties from November 2017 to April 2018 was paid to the buyer at closing. After the sale, Comstock has approximately 8,400 net undeveloped acres that are prospective for Eagle Ford shale development. During the three months and six months ended June 30, 2018, the Company recognized a loss on sale of oil and gas properties of $4.1 million and $32.7 million, respectively, to reduce the carrying value of its assets held for sale to their fair value less costs to sell and to adjust the carrying value of the undeveloped acreage retained to their fair value of $55.0 million which has been included in proved oil and gas properties. The fair value of the oil and gas properties retained, a Level 3 measurement, was determined using the discounted cash flow valuation methodology applied by the Company in assessing oil and gas properties for impairment. Key inputs to the valuation included average oil prices of $72.03 per barrel, average natural gas prices of $4.31 per thousand cubic feet and discount factors of 20% - 25%. Also included in loss on sale of oil and gas properties for the three and six months ended June 30, 2018 is a loss of $2.7 million resulting from a final settlement for a property sale completed in 2012.

Results of operations for properties that were sold were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(In thousands)
Total oil and gas sales	$	4,535		$	11,881		$	17,747		$	25,416
Total operating expenses⁽¹⁾		(1,743	)		(12,293	)		(6,134	)		(26,598	)
Operating income (loss)	$	2,792		$	(412	)	$	11,613		$	(1,182	)

(1)

Includes direct operating expenses, depreciation, depletion and amortization and exploration expense and excludes interest and general and administrative expense. No depreciation, depletion and amortization expense has been provided for subsequent to the date the assets were designated as held for sale.

Unproved oil and gas properties are periodically assessed and any impairment in value is charged to exploration expense. The costs of unproved properties which are determined to be productive are transferred to oil and gas properties and amortized on an equivalent unit-of-production basis. The Company also assesses the need for an impairment of the capitalized costs for its proved oil and gas properties on a property basis. No impairments were recognized to adjust the carrying value of the Company’s proved oil and gas properties during the three months and six months ended June 30, 2018 and 2017.

The Company determines the fair values of its oil and gas properties using a discounted cash flow model and proved and risk-adjusted probable oil and natural gas reserves. Undrilled acreage can also be valued based on sales transactions in comparable areas. Significant Level 3 assumptions associated with the calculation of discounted future cash flows included in the cash flow model include management's outlook for oil and natural gas prices, production costs, capital expenditures, and future production as well as estimated proved oil and gas reserves and risk-adjusted probable oil and natural gas reserves. Management's oil and natural gas price outlook is developed based on third-party longer-term price forecasts as of each measurement date. The expected future net cash flows are discounted using an appropriate discount rate in determining a property's fair value.

It is reasonably possible that the Company's estimates of undiscounted future net cash flows attributable to its oil and gas properties may change in the future. The primary factors that may affect estimates of future cash flows include future adjustments, both positive and negative, to proved and appropriate risk-adjusted probable oil and gas reserves, results of future drilling activities, future prices for oil and natural gas, and increases or decreases in production and capital costs. As a result of these changes, there may be future impairments in the carrying values of these or other properties.

Accrued Expenses

Accrued expenses at June 30, 2018 and December 31, 2017 consist of the following:

	As of June 30, 2018		As of December 31, 2017
	(In thousands)
Accrued drilling costs	$	6,028	$	5,874
Accrued interest payable		20,937		21,277
Accrued transportation costs		2,882		3,269
Accrued employee compensation		2,561		6,449
Asset retirement obligation – assets held for sale		—		4,557
Accrued ad valorem taxes		1,200		—
Other		1,848		1,029
	$	35,456	$	42,455

Reserve for Future Abandonment Costs

Comstock's asset retirement obligations relate to future plugging and abandonment expenses on its oil and gas properties and related facilities disposal. The following table summarizes the changes in Comstock's total estimated liability for such obligations during the six months ended June 30, 2018 and 2017:

	Six Months Ended June 30,
	2018			2017
	(In thousands)
Future abandonment costs — beginning of period	$	10,407		$	15,804
Accretion expense		280			431
New wells placed on production		4			4
Liabilities settled and assets disposed of		(69	)		(36	)
Future abandonment costs — end of period	$	10,622		$	16,203

Derivative Financial Instruments and Hedging Activities

All of the Company's derivative financial instruments are used for risk management purposes and, by policy, none are held for trading or speculative purposes. Comstock minimizes credit risk to counterparties of its derivative financial instruments through formal credit policies, monitoring procedures, and diversification. The Company is not required to provide any credit support to its counterparties other than cross collateralization with the assets securing its bank credit facility. None of the Company's derivative financial instruments involve payment or receipt of premiums. The Company classifies the fair value amounts of derivative financial instruments as net current or noncurrent assets or liabilities, whichever the case may be, by commodity and counterparty.

All of Comstock's natural gas derivative financial instruments are tied to the Henry Hub-NYMEX price index. The Company had the following outstanding derivative financial instruments used for natural gas price risk management at June 30, 2018:


	Future Production Period
	Three Months Ending September 30, 2018		Three Months Ending December 31, 2018		Six Months Ending December 31, 2018		Year Ending December 31, 2019		Total
Swap contracts:
Volume (MMbtu)		5,400,000		5,400,000		10,800,000		4,200,000		15,000,000
Price per MMbtu	$	3.00	$	3.00	$	3.00	$	3.00	$	3.00
Collar contracts:
Volume (MMbtu)		2,700,000		2,700,000		5,400,000		5,400,000		10,800,000
Price per MMbtu
Ceiling	$	3.30	$	3.30	$	3.30	$	3.30	$	3.30
Floor	$	2.50	$	2.50	$	2.50	$	2.50	$	2.50

Volume (MMbtu)		2,700,000		2,700,000		5,400,000		5,400,000		10,800,000
Price per MMbtu
Ceiling	$	3.50	$	3.50	$	3.50	$	3.50	$	3.50
Floor	$	2.50	$	2.50	$	2.50	$	2.50	$	2.50

None of the Company's derivative contracts were designated as cash flow hedges. The aggregate fair value of the Company's derivative instruments reported in the accompanying consolidated balance sheets by type, including the classification between assets and liabilities, consists of the following:

Type	Consolidated Balance Sheet Location	Fair Value		Gross Amounts Offset in the Consolidated Balance Sheet			Net Fair Value Presented in the Consolidated Balance Sheet
				(in thousands)
Fair Value of Derivative Instruments as of June 30, 2018
Asset Derivatives:
Natural gas price derivatives	Derivative Financial Instruments – current	$	79	$	(79	)	$	—
Liability Derivatives:
Natural gas price derivatives	Derivative Financial Instruments – current	$	309	$	(79	)	$	230

Fair Value of Derivative Instruments as of December 31, 2017
Asset Derivatives:
Natural gas price derivatives	Derivative Financial Instruments – current	$	1,318	$	—		$	1,318

The Company recognized cash settlements and changes in the fair value of its derivative financial instruments as a single component of other income (expenses). Gains and losses related to the change in the fair value recognized on the Company's derivative contracts recognized in the consolidated statement of operations were as follows:

Location of Gain/(Loss) Recognized in Earnings on Derivatives	Three Months Ended June 30,					Six Months Ended June 30,
	2018			2017		2018		2017
	(in thousands)
Gain (loss) from derivative financial instruments	$	(1,638	)	$	5,295	$	964	$	13,155

Stock-Based Compensation

Comstock accounts for employee stock-based compensation under the fair value method. Compensation cost is measured at the grant date based on the fair value of the award and is recognized over the award vesting period. The Company recognized $1.5 million of stock-based compensation expense within general and administrative expenses related to awards of restricted stock and performance stock units ("PSUs") to its employees and directors in each of the three months ended June 30, 2018 and 2017, respectively. For the six months ended June 30, 2018 and 2017, the Company recognized $3.1 million and $2.8 million, respectively, of stock-based compensation expense within general and administrative expenses.

During the six months ended June 30, 2018, the Company granted 445,801 shares of restricted stock with a grant date fair value of $3.8 million, or $8.46 per share, to its employees. The fair value of each restricted share on the date of grant was equal to its market price. As of June 30, 2018, Comstock had 803,955 shares of unvested restricted stock outstanding at a weighted average grant date fair value of $8.43 per share. Total unrecognized compensation cost related to unvested restricted stock grants of $5.7 million as of June 30, 2018 is expected to be recognized over a period of 2.2 years.

During the six months ended June 30, 2018, the Company granted 360,801 PSUs with a grant date fair value of $4.5 million, or $12.52 per unit, to its employees. As of June 30, 2018, Comstock had 514,336 PSUs outstanding at a weighted average grant date fair value of $13.83 per unit. The number of shares of common stock to be issued related to the PSUs is based on the Company's stock price performance as compared to its peers which could result in the issuance of anywhere from zero to 1,028,672 shares of common stock. Total unrecognized compensation cost related to these grants of $6.2 million as of June 30, 2018 is expected to be recognized over a period of 2.3 years.

Revenue Recognition

On January 1, 2018, the Company adopted Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers (Topic 606) ("ASU 2014-09"). Comstock adopted this standard using the modified retrospective method of adoption, and it applied the ASU only to contracts that were not completed as of January 1, 2018. Upon adoption, there were no adjustments to the opening balance of equity.

Comstock produces oil and natural gas and reports revenues separately for each of these two primary products in its statements of operations. Revenues are recognized upon the transfer of produced volumes to the Company's customers, who take control of the volumes and receive all the benefits of ownership upon delivery at designated sales points. Payment is reasonably assured upon delivery of production. All sales are subject to contracts that have commercial substance, contain specific pricing terms, and define the enforceable rights and obligations of both parties. These contracts typically provide for cash settlement within 25 days following each production month and are cancellable upon 30 days' notice by either party. Prices for sales of oil and natural gas are generally based upon terms that are common in the oil and gas industry, including index or spot prices, location and quality differentials, as well as market supply and demand conditions. As a result, prices for oil and natural gas routinely fluctuate based on changes in these factors. Each unit of production (barrel of crude oil and thousand cubic feet of natural gas) represents a separate performance obligation under the Company's contracts since each unit has economic benefit on its own and each is priced separately according to the terms of the contracts.

Comstock has elected to exclude all taxes from the measurement of transaction prices, and its revenues are reported net of royalties and exclude revenue interests owned by others because the Company acts as an agent when selling crude oil and natural gas, on behalf of royalty owners and working interest owners. Revenue is recorded in the month of production based on an estimate of the Company's share of volumes produced and prices realized. The Company recognizes any differences between estimates and actual amounts received in the month when payment is received. Historically differences between estimated revenues and actual revenue received have not been significant. The amount of oil or natural gas sold may differ from the amount to which the Company is entitled based on its revenue interests in the properties. The Company did not have any significant imbalance positions at December 31, 2017 or June 30, 2018. Sales of oil and natural gas generally occur at or near the wellhead. When sales of oil and gas occur at locations other than the wellhead, the Company accounts for costs incurred to transport the production to the delivery point as gathering and transportation expenses. The Company has recognized accounts receivable of $21.5 million as of June 30, 2018 from customers for contracts where performance obligations have been satisfied and an unconditional right to consideration exists.

Income Taxes

Deferred income taxes are provided to reflect the future tax consequences or benefits of differences between the tax basis of assets and liabilities and their reported amounts in the financial statements using enacted tax rates. The deferred tax provision in the first three months and six months ended June 30, 2018 and 2017 related to adjustments to the valuation allowances on federal and state net operating loss carryforwards. In recording deferred income tax assets, the Company considers whether it is more likely than not that some portion or all of its deferred income tax assets will be realized in the future. The ultimate realization of deferred income tax assets is dependent upon the generation of future taxable income during the periods in which those deferred income tax assets would be deductible. The Company believes that, after considering all the available objective evidence, historical and prospective, with greater weight given to historical evidence, management is not able to determine that it is more likely than not that all of its deferred tax assets will be realized. As a result, the Company established valuation allowances for its deferred tax assets and U.S. federal and state net operating loss carryforwards that are not expected to be utilized due to the uncertainty of generating taxable income prior to the expiration of the carryforward periods.

The following is an analysis of consolidated income tax provision (benefit):

	Three Months Ended June 30,					Six Months Ended June 30,
	2018			2017		2018			2017
	(In thousands)
Current - State	$	24		$	21	$	34		$	97
- Federal		—			—		—			—

Deferred - State		(597	)		496		(1,051	)		855
- Federal		451			—		1,477			—
	$	(122	)	$	517	$	460		$	952

The difference between the Company's effective tax rate and the 21% federal statutory rate in effect in 2018 and the 35% rate in effect in 2017 is caused by valuation allowances on deferred taxes and state taxes. The impact of these items varies based upon the Company's projected full year loss and the jurisdictions that are expected to generate the projected losses.

The difference between the federal statutory rate and the effective tax rate is due to the following:

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(In thousands)
Tax at statutory rate		21.0	%		35.0	%		21.0	%		35.0	%
Tax effect of:
Valuation allowance on deferred tax assets		(24.1	)		(42.1	)		(24.3	)		(40.1	)
State income taxes, net of federal benefit		3.9			5.0			3.5			4.3
Nondeductible stock-based compensation		(0.4	)		(0.4	)		(0.7	)		(1.4	)
Effective tax rate		0.4	%		(2.5	)%		(0.5	)%		(2.2	)%

The Tax Cuts and Jobs Act, which was enacted on December 22, 2017, reduced the corporate income tax rate effective January 1, 2018 from 35% to 21%. Among the other significant tax law changes that potentially affect the Company are the elimination of the corporate alternative minimum tax ("AMT"), changes that require operating losses incurred in 2018 and beyond be carried forward indefinitely with no carryback up to 80% of taxable income in a given year, and limitations on the deduction for interest expense incurred in 2018 or later for amounts in excess of 30% of its adjusted taxable income (defined as taxable income before interest and net operating losses). For tax years beginning before January 1, 2022, the adjusted taxable income for these purposes is also adjusted to exclude the impact of depreciation, depletion and amortization. The Tax Cuts and Jobs Act preserved deductibility of intangible drilling costs for federal income tax purposes, which allows the Company to deduct a portion of drilling costs in the year incurred and minimizes current taxes payable in periods of taxable income. At June 30, 2018, the Company has not completed its accounting for the tax effects of enactment of the Tax Cuts and Jobs Act; however, it has made reasonable estimates of the effects on its existing deferred tax balances. The Company has remeasured certain deferred federal tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21%. The provisional amount recognized at December 31, 2017 related to the remeasurement of its deferred federal tax balance was $140.4 million, which was subject to a valuation allowance. The Tax Cuts and Jobs Act also repealed the AMT for tax years beginning on or after January 1, 2018 and provides that existing AMT credit carryforwards can be utilized to offset federal taxes for any taxable year. In addition, 50% of any unused AMT credit carryforwards can be refunded during tax years 2018 through 2020. The Company reclassified $19.1 million to a non-current receivable at December 31, 2017 representing the amount of AMT that is now refundable through 2021. The Company is still analyzing certain aspects of the Tax Cuts and Jobs Act, and refining its calculations, which could potentially affect the measurement of those balances or potentially give rise to new deferred tax amounts. Comstock's estimates may also be affected in the future as the Company gains a more thorough understanding of the Tax Cuts and Jobs Act, and how the individual states are implementing this new law.

Future use of the Company's federal and state net operating loss carryforwards may be limited in the event that a cumulative change in the ownership of Comstock's common stock by more than 50% occurs within a three-year period. Such a change in ownership could result in a substantial portion of the Company's net operating loss carryforwards being eliminated or becoming restricted. It is highly likely that a change in ownership due to future conversion of the Company's convertible notes would result in limits on the future use of its net operating loss carryforwards. In addition, the Company expects that the transaction discussed in Footnote (5) – Jones Contribution and Refinancing Plans involving the contribution of oil and gas properties for common stock will result in a change of control which will result in limits on the future use of its net operating loss carryforwards.

The Company's federal income tax returns for the years subsequent to December 31, 2013 remain subject to examination. The Company's income tax returns in major state income tax jurisdictions remain subject to examination for various periods subsequent to December 31, 2012. The Company currently believes that all other significant filing positions are highly certain and that all of its other significant income tax positions and deductions would be sustained under audit or the final resolution would not have a material effect on the consolidated financial statements. Therefore, the Company has not established any significant reserves for uncertain tax positions.

Fair Value Measurements

The Company holds or has held certain financial assets and liabilities that are required to be measured at fair value. These include cash and cash equivalents held in bank accounts and derivative financial instruments in the form of oil and natural gas price swap agreements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. A three-level hierarchy is followed for disclosure to show the extent and level of judgment used to estimate fair value measurements:

Level 1 — Inputs used to measure fair value are unadjusted quoted prices that are available in active markets for the identical assets or liabilities as of the reporting date.

Level 2 — Inputs used to measure fair value, other than quoted prices included in Level 1, are either directly or indirectly observable as of the reporting date through correlation with market data, including quoted prices for similar assets and liabilities in active markets and quoted prices in markets that are not active. Level 2 also includes assets and liabilities that are valued using models or other pricing methodologies that do not require significant judgment since the input assumptions used in the models, such as interest rates and volatility factors, are corroborated by readily observable data from actively quoted markets for substantially the full term of the financial instrument.

Level 3 — Inputs used to measure fair value are unobservable inputs that are supported by little or no market activity and reflect the use of significant management judgment. These values are generally determined using pricing models for which the assumptions utilize management's estimates of market participant assumptions.

The Company's cash and cash equivalents valuation is based on Level 1 measurements. The Company's oil and natural gas price swap agreements and its natural gas price collars were not traded on a public exchange, and their value is determined utilizing a discounted cash flow model based on inputs that are readily available in public markets and, accordingly, the valuation of these swap agreements, is categorized as a Level 2 measurement. There are no financial assets or liabilities accounted for at fair value as of June 30, 2018 that are a Level 3 measurement.

At June 30, 2018 the Company had a liability of $0.2 million recorded for the fair value of its natural gas swaps and collars. At December 31, 2017, the Company had assets recorded for the fair value of its natural gas price swap agreements of $1.3 million. There were no offsetting swap positions in 2018 or 2017. The change in fair value of these natural gas swaps and collars was recognized as a gain or loss and included as a component of other income (expense).

As of June 30, 2018, the Company's other financial instruments, comprised solely of its fixed rate debt, had a carrying value of $1.2 billion and a fair value of $1.2 billion. The fair market value of the Company's fixed rate debt was based on quoted prices as of June 30, 2018, a Level 2 measurement.

Earnings Per Share

Unvested share-based payment awards containing nonforfeitable rights to dividends are considered to be participating securities and included in the computation of basic and diluted earnings per share pursuant to the two-class method. PSUs represent the right to receive a number of shares of the Company's common stock that may range from zero to up to two times the number of PSUs granted on the award date based on the achievement of certain performance measures during a performance period. The number of potentially dilutive shares related to PSUs is based on the number of shares, if any, which would be issuable at the end of the respective period, assuming that date was the end of the contingency period. The treasury stock method is used to measure the dilutive effect of PSUs. Unexercised common stock warrants represent the right to convert the warrants into common stock at an exercise price of $0.01 per share. The treasury stock method is used to measure the dilutive effect of unexercised common stock warrants. The shares that would be issuable upon exercise of the conversion rights contains in the Company's convertible debt for each period are based on the if-converted method for computing potentially dilutive shares of common stock that could be issued upon conversion. None of the Company's participating securities participate in losses and as such are excluded from the computation of basic earnings per share during periods of net losses.

Basic and diluted loss per share for the three months and six months ended June 30, 2018 and 2017 were determined as follows:

	Three Months Ended June 30,
	2018								2017
	Loss			Shares		Per Share			Loss			Shares		Per Share
	(In thousands, except per share amounts)

Basic and diluted net loss attributable to common stock	$	(34,003	)		15,340	$	(2.22	)	$	(21,442	)		14,749	$	(1.45	)

	Six Months Ended June 30,
	2018								2017
	Loss			Shares		Per Share			Loss			Shares		Per Share
	(In thousands, except per share amounts)

Basic and diluted net loss attributable to common stock	$	(75,889	)		15,212	$	(4.99	)	$	(44,373	)		14,488	$	(3.06	)

Basic and diluted per share amounts are the same for the three months and six months ended June 30, 2018 and 2017 due to the net loss reported during each of those periods.

At June 30, 2018 and December 31, 2017, 803,955 and 619,867 shares of restricted stock, respectively, are included in common stock outstanding as such shares have a nonforfeitable right to participate in any dividends that might be declared and have the right to vote on matters submitted to the Company's stockholders.

Weighted average shares of unvested restricted stock outstanding during the three months and six months ended June 30, 2018 and 2017 which were excluded from the computation of the loss per share were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(In thousands)
Unvested restricted stock		857		659		846		582

All stock options, unvested PSUs, warrants exercisable into common stock and contingently issuable shares related to the convertible debt that were anti-dilutive to earnings and excluded from weighted average shares used in the computation of earnings per share due to the net loss in each period were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(In thousands except per share/unit data)
Weighted average warrants for common stock		116		433		167		511
Weighted average exercise price per share	$	0.01	$	0.01	$	0.01	$	0.01

Weighted average PSUs		514		313		466		273
Weighted average grant date fair value per unit	$	13.83	$	17.12	$	13.83	$	17.12

Weighted average contingently convertible shares		40,017		36,181		39,617		36,331
Weighted average conversion price per share	$	12.32	$	12.32	$	12.32	$	12.32

Supplementary Information With Respect to the Consolidated Statements of Cash Flows

For the purpose of the consolidated statements of cash flows, the Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.

Cash payments made for interest and income taxes for the six months ended June 30, 2018 and 2017, respectively, were as follows:

	Six Months Ended June 30,
	2018		2017
	(In thousands)
Interest payments	$	36,122	$	37,846
Income tax payments	$	2	$	3

Interest paid in-kind related to the Company's convertible notes was $20.0 million and $18.6 million during the six months ended June 30, 2018 and 2017, respectively.

Recent Accounting Pronouncements

On January 1, 2018, the Company adopted ASU 2014-09, which supersedes nearly all existing revenue recognition guidance under existing generally accepted accounting principles. This new standard is based upon the principal that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Comstock adopted this standard using the modified retrospective method of adoption and it applied the ASU only to contracts that were not completed as of January 1, 2018. Upon adoption, there were no adjustments to the opening balance of equity and the Company does not expect the standard to have a significant effect on its results of operations, liquidity or financial position.

In February 2016, the FASB issued ASU No. 2016-02, Leases ("ASU 2016-02"). ASU 2016-02 requires lessees to include most leases on their balance sheets, but recognize lease costs in their financial statements in a manner similar to accounting for leases prior to ASC 2016-02. ASU 2016-02 is effective for annual periods ending after December 15, 2018 and interim periods thereafter. Early adoption is permitted. The Company is currently evaluating the new guidance and anticipates that certain operating leases that it has in place will be reflected as an asset and a liability in its consolidated balance sheet. The Company has not yet determined which method of adoption it will apply for this new standard.

Long-Term Debt

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Long-Term Debt

(2) LONG-TERM DEBT –

At June 30, 2018, long-term debt was comprised of the following:

	(In thousands)

10% Senior Secured Toggle Notes due 2020:
Principal	$	697,195
Discount, net of amortization		(7,070	)
7¾% Convertible Second Lien PIK Notes due 2019⁽¹⁾:
Principal		295,465
Accrued interest payable in kind		5,693
Discount, net of amortization		(24,821	)
9½% Convertible Second Lien PIK Notes due 2020:
Principal		195,948
Accrued interest payable in kind		801
Discount, net of amortization		(27,077	)
10% Senior Notes due 2020:
Principal		2,805
7¾% Senior Notes due 2019⁽¹⁾:
Principal		17,959
Premium, net of amortization		39
9½% Senior Notes due 2020:
Principal		4,860
Discount, net of amortization		(56	)
Debt issuance costs, net of amortization		(8,408	)
	$	1,153,333

(1) Classified as long-term debt as the Company intends to refinance this debt with new long-term debt - See Footnote 5-Jones Contribution and Financing Plans.

Interest on the 10% Senior Secured Toggle Notes and 10% Senior Notes due 2020 is payable on March 15 and September 15 and the notes mature on March 15, 2020. The Company has the option to pay up to $75.0 million of accrued interest on the Senior Secured Toggle Notes by issuing additional notes. To the extent that interest is paid in kind, the interest rate increases to 12¼% only for that interest payment and would result in up to an additional $91.9 million of notes outstanding.

Interest on the 7¾% Convertible Second Lien PIK Notes and the 7¾% Senior Notes due 2019 is payable on April 1 and October 1 and these notes mature on April 1, 2019. Interest on the 9½% Convertible Second Lien PIK Notes and the 9½% Senior Notes due 2020 is payable on June 15 and December 15 and these notes mature on June 15, 2020. Interest on the convertible notes is only payable in kind. Each series of the convertible notes is convertible, at the option of the holder, into 81.2 shares of the Company's common stock for each $1,000 of principal amount of notes. The convertible notes will mandatorily convert into shares of common stock following a 15 consecutive trading day period during which the daily volume weighted average price of the Company's common stock is equal to or greater than $12.32 per share. The mandatory conversion provisions of the convertible notes have been temporarily suspended pending the completion of the Jones Contribution and the tender offer. $9.9 million of principal amount of the convertible notes plus related accrued interest were converted into 826,327 shares of common stock during the six months ended June 30, 2017.

Comstock has a $50.0 million revolving credit facility with Bank of Montreal and Bank of America, N.A. that matures on March 4, 2019. As of June 30, 2018, there were no borrowings outstanding under the revolving credit facility. Indebtedness under the revolving credit facility is guaranteed by all of the Company's subsidiaries and is secured by substantially all of Comstock's and its subsidiaries' assets. Borrowings under the revolving credit facility bear interest, at Comstock's option, at either (1) LIBOR plus 2.5% or (2) the base rate (which is the higher of the administrative agent's prime rate, the federal funds rate plus 0.5% or 30 day LIBOR plus 1.0%) plus 1.5%. A commitment fee of 0.5% per annum is payable quarterly on the unused credit line. The revolving credit facility contains covenants that, among other things, restrict the payment of cash dividends and repurchases of common stock, limit the amount of additional debt that Comstock may incur and limit the Company's ability to make certain loans, investments and divestitures. The only financial covenants are the maintenance of a current ratio, including availability under the revolving credit facility, of at least 1.0 to 1.0 and the maintenance of an asset coverage ratio of proved developed reserves to amounts outstanding under the credit facility of at least 2.5 to 1.0. The Company was in compliance with these covenants as of June 30, 2018.

All of the Company's subsidiaries guarantee the bank credit facility, the 10% Senior Secured Toggle Notes, the 7¾% Convertible Second Lien PIK Notes, the 9½% Convertible Second Lien PIK Notes, and the other outstanding senior notes. The bank credit facility, the 10% Senior Secured Toggle Notes and the convertible notes are secured by liens on substantially all of the assets of the Company and its subsidiaries. The allocation of proceeds related to the liens on the Company's assets are governed by intercreditor agreements granting priority to the bank credit facility. Proceeds from liens on the convertible notes are also subject to the priority of the 10% Senior Secured Toggle Notes.

Stockholders' Equity	6 Months Ended
Stockholders' Equity	Jun. 30, 2018
Equity [Abstract]
Stockholders' Equity	(3) STOCKHOLDERS' EQUITY – At June 30, 2018, the Company had warrants outstanding to purchase 51,449 shares of common stock at an exercise price of $0.01 per share. Warrants for 363,638 and 246,793 shares of common stock were exercised during the six months ended June 30, 2018 and 2017, respectively.

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Jun. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	(4) Commitments and Contingencies – From time to time, Comstock is involved in certain litigation that arises in the normal course of its operations. The Company records a loss contingency for these matters when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. The Company does not believe the resolution of any of these matters will have a material effect on the Company's financial position or results of operations. The Company has entered into natural gas transportation and treating agreements through July 2019. Maximum commitments under these transportation agreements as of June 30, 2018 totaled $1.3 million. As of June 30, 2018, the Company had commitments for contracted drilling services through September 2019 of $19.3 million.

Jones Contribution and Refinancing Plans	6 Months Ended
Jones Contribution and Refinancing Plans	Jun. 30, 2018
Jones Contribution And Refinancing Plans [Abstract]
Jones Contribution and Refinancing Plans	(5) JONES CONTRIBUTION AND REFINANCING PLANS – On May 9, 2018, Arkoma Drilling, L.P. ("Arkoma") and Williston Drilling, L.P. ("Williston") entered into a Contribution Agreement with the Company to contribute certain oil and gas properties in North Dakota and Montana (the "Bakken Shale Properties") with an estimated fair value of approximately $620.0 million in exchange for approximately 88.6 million newly issued shares of the Company's common stock (the "Jones Contribution"). The effective date of the acquisition of the properties is April 1, 2018. Comstock estimated that the properties have proved reserves of 22.8 million barrels of oil and 49.3 Bcf of natural gas on the effective date. Upon completion of this transaction, Arkoma and Williston will collectively own approximately 84.5% of the Company's pro forma outstanding shares. The transaction is subject to a number of closing conditions, including the approval of the issuance of the common stock by the Company's stockholders at the Company's Annual Meeting of Stockholders on August 10, 2018 and satisfaction of certain other closing conditions. In connection with the Jones Contribution, the Company commenced a tender offer on July 13, 2018 to repurchase all of its outstanding debt. The Company expects to close the tender offer concurrent with the closing of the Jones Contribution and refinance all of the Company's debt using funds from the sale of 9¾% Senior Notes due 2026 and borrowings under a new Bank Credit Facility with an initial borrowing base of $700.0 million. In connection with the refinancing plan, the Company sold $850.0 million of 9¾% Senior Notes due 2026 at 95.988% of the principal amount on August 3, 2018. Interest on the new senior notes is payable on February 15 and August 15. Proceeds from the offering are being held in escrow pending the closing of the Jones Contribution which is expected to occur on August 14, 2018.

Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	(6) SUBSEQUENT EVENTS – On July 31, 2018 the Company acquired oil and gas properties in North Louisiana for $37.0 million. These properties, consist of approximately 21,000 gross acres (9,900 net) primarily in Caddo and DeSoto Parishes in Louisiana and include 120 (26.2 net) producing natural gas wells, 49 (14.7 net) of which produce from the Haynesville shale. All of the acreage acquired is held by production. Comstock has identified 112 (31.0 net) potential drilling locations on this acreage of which 21 (17.9 net) would be operated by Comstock.

Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Basis of Presentation

The results of operations for the three months and six months ended June 30, 2018 are not necessarily an indication of the results expected for the full year.

These unaudited consolidated financial statements include the accounts of Comstock and its wholly-owned subsidiaries.

Property and Equipment

The Company follows the successful efforts method of accounting for its oil and gas properties. Costs incurred to acquire oil and gas leasehold are capitalized.

Results of operations for properties that were sold were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(In thousands)
Total oil and gas sales	$	4,535		$	11,881		$	17,747		$	25,416
Total operating expenses⁽¹⁾		(1,743	)		(12,293	)		(6,134	)		(26,598	)
Operating income (loss)	$	2,792		$	(412	)	$	11,613		$	(1,182	)

(1)

Accrued Expenses

Accrued expenses at June 30, 2018 and December 31, 2017 consist of the following:

	As of June 30, 2018		As of December 31, 2017
	(In thousands)
Accrued drilling costs	$	6,028	$	5,874
Accrued interest payable		20,937		21,277
Accrued transportation costs		2,882		3,269
Accrued employee compensation		2,561		6,449
Asset retirement obligation – assets held for sale		—		4,557
Accrued ad valorem taxes		1,200		—
Other		1,848		1,029
	$	35,456	$	42,455

Reserve for Future Abandonment Costs

	Six Months Ended June 30,
	2018			2017
	(In thousands)
Future abandonment costs — beginning of period	$	10,407		$	15,804
Accretion expense		280			431
New wells placed on production		4			4
Liabilities settled and assets disposed of		(69	)		(36	)
Future abandonment costs — end of period	$	10,622		$	16,203

Derivative Financial Instruments and Hedging Activities


	Future Production Period
	Three Months Ending September 30, 2018		Three Months Ending December 31, 2018		Six Months Ending December 31, 2018		Year Ending December 31, 2019		Total
Swap contracts:
Volume (MMbtu)		5,400,000		5,400,000		10,800,000		4,200,000		15,000,000
Price per MMbtu	$	3.00	$	3.00	$	3.00	$	3.00	$	3.00
Collar contracts:
Volume (MMbtu)		2,700,000		2,700,000		5,400,000		5,400,000		10,800,000
Price per MMbtu
Ceiling	$	3.30	$	3.30	$	3.30	$	3.30	$	3.30
Floor	$	2.50	$	2.50	$	2.50	$	2.50	$	2.50

Volume (MMbtu)		2,700,000		2,700,000		5,400,000		5,400,000		10,800,000
Price per MMbtu
Ceiling	$	3.50	$	3.50	$	3.50	$	3.50	$	3.50
Floor	$	2.50	$	2.50	$	2.50	$	2.50	$	2.50

Type	Consolidated Balance Sheet Location	Fair Value		Gross Amounts Offset in the Consolidated Balance Sheet			Net Fair Value Presented in the Consolidated Balance Sheet
				(in thousands)
Fair Value of Derivative Instruments as of June 30, 2018
Asset Derivatives:
Natural gas price derivatives	Derivative Financial Instruments – current	$	79	$	(79	)	$	—
Liability Derivatives:
Natural gas price derivatives	Derivative Financial Instruments – current	$	309	$	(79	)	$	230

Fair Value of Derivative Instruments as of December 31, 2017
Asset Derivatives:
Natural gas price derivatives	Derivative Financial Instruments – current	$	1,318	$	—		$	1,318

Location of Gain/(Loss) Recognized in Earnings on Derivatives	Three Months Ended June 30,					Six Months Ended June 30,
	2018			2017		2018		2017
	(in thousands)
Gain (loss) from derivative financial instruments	$	(1,638	)	$	5,295	$	964	$	13,155

Stock-Based Compensation

Revenue Recognition

Income Taxes

The following is an analysis of consolidated income tax provision (benefit):

	Three Months Ended June 30,					Six Months Ended June 30,
	2018			2017		2018			2017
	(In thousands)
Current - State	$	24		$	21	$	34		$	97
- Federal		—			—		—			—

Deferred - State		(597	)		496		(1,051	)		855
- Federal		451			—		1,477			—
	$	(122	)	$	517	$	460		$	952

The difference between the federal statutory rate and the effective tax rate is due to the following:

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(In thousands)
Tax at statutory rate		21.0	%		35.0	%		21.0	%		35.0	%
Tax effect of:
Valuation allowance on deferred tax assets		(24.1	)		(42.1	)		(24.3	)		(40.1	)
State income taxes, net of federal benefit		3.9			5.0			3.5			4.3
Nondeductible stock-based compensation		(0.4	)		(0.4	)		(0.7	)		(1.4	)
Effective tax rate		0.4	%		(2.5	)%		(0.5	)%		(2.2	)%

Fair Value Measurements

Level 1 — Inputs used to measure fair value are unadjusted quoted prices that are available in active markets for the identical assets or liabilities as of the reporting date.

Earnings Per Share

Basic and diluted loss per share for the three months and six months ended June 30, 2018 and 2017 were determined as follows:

	Three Months Ended June 30,
	2018								2017
	Loss			Shares		Per Share			Loss			Shares		Per Share
	(In thousands, except per share amounts)

Basic and diluted net loss attributable to common stock	$	(34,003	)		15,340	$	(2.22	)	$	(21,442	)		14,749	$	(1.45	)

	Six Months Ended June 30,
	2018								2017
	Loss			Shares		Per Share			Loss			Shares		Per Share
	(In thousands, except per share amounts)

Basic and diluted net loss attributable to common stock	$	(75,889	)		15,212	$	(4.99	)	$	(44,373	)		14,488	$	(3.06	)

Basic and diluted per share amounts are the same for the three months and six months ended June 30, 2018 and 2017 due to the net loss reported during each of those periods.

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(In thousands)
Unvested restricted stock		857		659		846		582

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(In thousands except per share/unit data)
Weighted average warrants for common stock		116		433		167		511
Weighted average exercise price per share	$	0.01	$	0.01	$	0.01	$	0.01

Weighted average PSUs		514		313		466		273
Weighted average grant date fair value per unit	$	13.83	$	17.12	$	13.83	$	17.12

Weighted average contingently convertible shares		40,017		36,181		39,617		36,331
Weighted average conversion price per share	$	12.32	$	12.32	$	12.32	$	12.32

Supplementary Information With Respect to the Consolidated Statements of Cash Flows

For the purpose of the consolidated statements of cash flows, the Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.

Cash payments made for interest and income taxes for the six months ended June 30, 2018 and 2017, respectively, were as follows:

	Six Months Ended June 30,
	2018		2017
	(In thousands)
Interest payments	$	36,122	$	37,846
Income tax payments	$	2	$	3

Interest paid in-kind related to the Company's convertible notes was $20.0 million and $18.6 million during the six months ended June 30, 2018 and 2017, respectively.

Recent Accounting Pronouncements

Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Results of Operations for Properties

Results of operations for properties that were sold were as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(In thousands)
Total oil and gas sales	$	4,535		$	11,881		$	17,747		$	25,416
Total operating expenses⁽¹⁾		(1,743	)		(12,293	)		(6,134	)		(26,598	)
Operating income (loss)	$	2,792		$	(412	)	$	11,613		$	(1,182	)

(1)

Summary of Accrued Expenses

Accrued expenses at June 30, 2018 and December 31, 2017 consist of the following:

	As of June 30, 2018		As of December 31, 2017
	(In thousands)
Accrued drilling costs	$	6,028	$	5,874
Accrued interest payable		20,937		21,277
Accrued transportation costs		2,882		3,269
Accrued employee compensation		2,561		6,449
Asset retirement obligation – assets held for sale		—		4,557
Accrued ad valorem taxes		1,200		—
Other		1,848		1,029
	$	35,456	$	42,455

Summary of Changes in Reserve for Future Abandonment Costs

The following table summarizes the changes in Comstock's total estimated liability for such obligations during the six months ended June 30, 2018 and 2017:

	Six Months Ended June 30,
	2018			2017
	(In thousands)
Future abandonment costs — beginning of period	$	10,407		$	15,804
Accretion expense		280			431
New wells placed on production		4			4
Liabilities settled and assets disposed of		(69	)		(36	)
Future abandonment costs — end of period	$	10,622		$	16,203

Schedule of Gas Derivative Contracts Volume and Prices

The Company had the following outstanding derivative financial instruments used for natural gas price risk management at June 30, 2018:


	Future Production Period
	Three Months Ending September 30, 2018		Three Months Ending December 31, 2018		Six Months Ending December 31, 2018		Year Ending December 31, 2019		Total
Swap contracts:
Volume (MMbtu)		5,400,000		5,400,000		10,800,000		4,200,000		15,000,000
Price per MMbtu	$	3.00	$	3.00	$	3.00	$	3.00	$	3.00
Collar contracts:
Volume (MMbtu)		2,700,000		2,700,000		5,400,000		5,400,000		10,800,000
Price per MMbtu
Ceiling	$	3.30	$	3.30	$	3.30	$	3.30	$	3.30
Floor	$	2.50	$	2.50	$	2.50	$	2.50	$	2.50

Volume (MMbtu)		2,700,000		2,700,000		5,400,000		5,400,000		10,800,000
Price per MMbtu
Ceiling	$	3.50	$	3.50	$	3.50	$	3.50	$	3.50
Floor	$	2.50	$	2.50	$	2.50	$	2.50	$	2.50

Schedule of Derivative Instruments

Type	Consolidated Balance Sheet Location	Fair Value		Gross Amounts Offset in the Consolidated Balance Sheet			Net Fair Value Presented in the Consolidated Balance Sheet
				(in thousands)
Fair Value of Derivative Instruments as of June 30, 2018
Asset Derivatives:
Natural gas price derivatives	Derivative Financial Instruments – current	$	79	$	(79	)	$	—
Liability Derivatives:
Natural gas price derivatives	Derivative Financial Instruments – current	$	309	$	(79	)	$	230

Fair Value of Derivative Instruments as of December 31, 2017
Asset Derivatives:
Natural gas price derivatives	Derivative Financial Instruments – current	$	1,318	$	—		$	1,318

Schedule of Gains and Losses from Derivative Financial Instruments

Gains and losses related to the change in the fair value recognized on the Company's derivative contracts recognized in the consolidated statement of operations were as follows:

Location of Gain/(Loss) Recognized in Earnings on Derivatives	Three Months Ended June 30,					Six Months Ended June 30,
	2018			2017		2018		2017
	(in thousands)
Gain (loss) from derivative financial instruments	$	(1,638	)	$	5,295	$	964	$	13,155

Consolidated Income Tax Provision (Benefit)

The following is an analysis of consolidated income tax provision (benefit):

	Three Months Ended June 30,					Six Months Ended June 30,
	2018			2017		2018			2017
	(In thousands)
Current - State	$	24		$	21	$	34		$	97
- Federal		—			—		—			—

Deferred - State		(597	)		496		(1,051	)		855
- Federal		451			—		1,477			—
	$	(122	)	$	517	$	460		$	952

Difference Between Federal Statutory Rate and Effective Tax Rate

The difference between the federal statutory rate and the effective tax rate is due to the following:

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(In thousands)
Tax at statutory rate		21.0	%		35.0	%		21.0	%		35.0	%
Tax effect of:
Valuation allowance on deferred tax assets		(24.1	)		(42.1	)		(24.3	)		(40.1	)
State income taxes, net of federal benefit		3.9			5.0			3.5			4.3
Nondeductible stock-based compensation		(0.4	)		(0.4	)		(0.7	)		(1.4	)
Effective tax rate		0.4	%		(2.5	)%		(0.5	)%		(2.2	)%

Basic and Diluted Losses Per Share

Basic and diluted loss per share for the three months and six months ended June 30, 2018 and 2017 were determined as follows:

	Three Months Ended June 30,
	2018								2017
	Loss			Shares		Per Share			Loss			Shares		Per Share
	(In thousands, except per share amounts)

Basic and diluted net loss attributable to common stock	$	(34,003	)		15,340	$	(2.22	)	$	(21,442	)		14,749	$	(1.45	)

	Six Months Ended June 30,
	2018								2017
	Loss			Shares		Per Share			Loss			Shares		Per Share
	(In thousands, except per share amounts)

Basic and diluted net loss attributable to common stock	$	(75,889	)		15,212	$	(4.99	)	$	(44,373	)		14,488	$	(3.06	)

Weighted Average Shares of Unvested Restricted Stock

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(In thousands)
Unvested restricted stock		857		659		846		582

Common Stock Stock Options and Convertible Stock Anti-Dilutive to Earnings Excluded from Weighted Average Shares Used in Computation of Earning Per Share

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
	(In thousands except per share/unit data)
Weighted average warrants for common stock		116		433		167		511
Weighted average exercise price per share	$	0.01	$	0.01	$	0.01	$	0.01

Weighted average PSUs		514		313		466		273
Weighted average grant date fair value per unit	$	13.83	$	17.12	$	13.83	$	17.12

Weighted average contingently convertible shares		40,017		36,181		39,617		36,331
Weighted average conversion price per share	$	12.32	$	12.32	$	12.32	$	12.32

Cash Payments Made for Interest and Income Taxes

Cash payments made for interest and income taxes for the six months ended June 30, 2018 and 2017, respectively, were as follows:

	Six Months Ended June 30,
	2018		2017
	(In thousands)
Interest payments	$	36,122	$	37,846
Income tax payments	$	2	$	3

Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Long-term Debt

At June 30, 2018, long-term debt was comprised of the following:

	(In thousands)

10% Senior Secured Toggle Notes due 2020:
Principal	$	697,195
Discount, net of amortization		(7,070	)
7¾% Convertible Second Lien PIK Notes due 2019⁽¹⁾:
Principal		295,465
Accrued interest payable in kind		5,693
Discount, net of amortization		(24,821	)
9½% Convertible Second Lien PIK Notes due 2020:
Principal		195,948
Accrued interest payable in kind		801
Discount, net of amortization		(27,077	)
10% Senior Notes due 2020:
Principal		2,805
7¾% Senior Notes due 2019⁽¹⁾:
Principal		17,959
Premium, net of amortization		39
9½% Senior Notes due 2020:
Principal		4,860
Discount, net of amortization		(56	)
Debt issuance costs, net of amortization		(8,408	)
	$	1,153,333

(1) Classified as long-term debt as the Company intends to refinance this debt with new long-term debt - See Footnote 5-Jones Contribution and Financing Plans.

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Summary of Significant Accounting Policies - Additional Information 1 (Detail)		3 Months Ended		6 Months Ended
	Apr. 27, 2018 USD ($)	Jun. 30, 2018 USD ($) a	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) a $ / bbl $ / Mcf	Jun. 30, 2017 USD ($)
Operations And Summary Of Significant Accounting Policies [Line Items]
Loss on sale of oil and gas properties		$ 6,838,000		$ 35,438,000
Loss resulting from final settlement for property sale		2,700,000		2,700,000
Impairment of oil and gas properties		0	$ 0	0	$ 0
Cash flow hedges derivative instruments		$ 0		$ 0
South Texas Sold Properties
Operations And Summary Of Significant Accounting Policies [Line Items]
Gross proceeds from sale of oil and gas properties	$ 125,000,000
Effective date of sale	Nov. 01, 2017
South Texas Asset Held for Sale
Operations And Summary Of Significant Accounting Policies [Line Items]
Undeveloped Acres \| a		8,400		8,400
Assets held for sale, fair value		$ 55,000,000		$ 55,000,000
Loss on sale of oil and gas properties		$ 4,100,000		$ 32,700,000
Management's oil price outlook \| $ / bbl				72.03
Management's gas price outlook \| $ / Mcf				4.31
Annual minimum discount rate				20.00%
Annual maximum discount rate				25.00%

Summary of Significant Accounting Policies - Results of Operations for Properties (Detail) - USD ($)
$ in Thousands

3 Months Ended

6 Months Ended

Jun. 30, 2018

Jun. 30, 2017

Jun. 30, 2018

Jun. 30, 2017

Oil And Gas Properties Sold [Abstract]

Total oil and gas sales

$ 4,535

$ 11,881

$ 17,747

$ 25,416

Total operating expenses

^[1]

(1,743)

(12,293)

(6,134)

(26,598)

Operating income (loss)

$ 2,792

$ (412)

$ 11,613

$ (1,182)

[1]

Summary of Significant Accounting Policies - Summary of Accrued Expenses (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Accrued Liabilities, Current [Abstract]
Accrued drilling costs	$ 6,028	$ 5,874
Accrued interest payable	20,937	21,277
Accrued transportation costs	2,882	3,269
Accrued employee compensation	2,561	6,449
Asset retirement obligation – assets held for sale		4,557
Accrued ad valorem taxes	1,200
Other	1,848	1,029
Total accrued expenses	$ 35,456	$ 42,455

Summary of Significant Accounting Policies - Summary of Changes in Reserve for Future Abandonment Costs (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Asset Retirement Obligations Noncurrent [Abstract]
Future abandonment costs — beginning of period	$ 10,407	$ 15,804
Accretion expense	280	431
New wells placed on production	4	4
Liabilities settled and assets disposed of	(69)	(36)
Future abandonment costs — end of period	$ 10,622	$ 16,203

Summary of Significant Accounting Policies - Schedule of Gas Derivative Contracts Volume and Prices (Detail)	Jun. 30, 2018 MMBTU $ / MMBTU
Gas Contracts, in MMBTU \| Swap Contracts for Q3
Derivative [Line Items]
Volume, MMBTU \| MMBTU	5,400,000
Gas Contracts, in MMBTU \| Swap Contracts for Q4
Derivative [Line Items]
Volume, MMBTU \| MMBTU	5,400,000
Gas Contracts, in MMBTU \| Swap Contracts for Q3 and Q4
Derivative [Line Items]
Volume, MMBTU \| MMBTU	10,800,000
Gas Contracts, in MMBTU \| Swap Contracts for 2019
Derivative [Line Items]
Volume, MMBTU \| MMBTU	4,200,000
Gas Contracts, in MMBTU \| Swap Contracts
Derivative [Line Items]
Volume, MMBTU \| MMBTU	15,000,000
Gas Contracts, in MMBTU \| Collar Contract One for Q3
Derivative [Line Items]
Volume, MMBTU \| MMBTU	2,700,000
Gas Contracts, in MMBTU \| Collar Contract One for Q4
Derivative [Line Items]
Volume, MMBTU \| MMBTU	2,700,000
Gas Contracts, in MMBTU \| Collar Contract One for Q3 and Q4
Derivative [Line Items]
Volume, MMBTU \| MMBTU	5,400,000
Gas Contracts, in MMBTU \| Collar Contract One for 2019
Derivative [Line Items]
Volume, MMBTU \| MMBTU	5,400,000
Gas Contracts, in MMBTU \| Collar Contract One
Derivative [Line Items]
Volume, MMBTU \| MMBTU	10,800,000
Gas Contracts, in MMBTU \| Collar Contract Two for Q3
Derivative [Line Items]
Volume, MMBTU \| MMBTU	2,700,000
Gas Contracts, in MMBTU \| Collar Contract Two for Q4
Derivative [Line Items]
Volume, MMBTU \| MMBTU	2,700,000
Gas Contracts, in MMBTU \| Collar Contract Two for Q3 and Q4
Derivative [Line Items]
Volume, MMBTU \| MMBTU	5,400,000
Gas Contracts, in MMBTU \| Collar Contract Two for 2019
Derivative [Line Items]
Volume, MMBTU \| MMBTU	5,400,000
Gas Contracts, in MMBTU \| Collar Contract Two
Derivative [Line Items]
Volume, MMBTU \| MMBTU	10,800,000
Gas Contracts, Price per MMBTU \| Swap Contracts for Q3
Derivative [Line Items]
Price per MMBtu in usd	3.00
Gas Contracts, Price per MMBTU \| Swap Contracts for Q4
Derivative [Line Items]
Price per MMBtu in usd	3.00
Gas Contracts, Price per MMBTU \| Swap Contracts for Q3 and Q4
Derivative [Line Items]
Price per MMBtu in usd	3.00
Gas Contracts, Price per MMBTU \| Swap Contracts for 2019
Derivative [Line Items]
Price per MMBtu in usd	3.00
Gas Contracts, Price per MMBTU \| Swap Contracts
Derivative [Line Items]
Price per MMBtu in usd	3.00
Gas Contracts, Price per MMBTU \| Collar Contract One for Q3
Derivative [Line Items]
Ceiling, price per MMBTU	3.30
Floor, price per MMBTU	2.50
Gas Contracts, Price per MMBTU \| Collar Contract One for Q4
Derivative [Line Items]
Ceiling, price per MMBTU	3.30
Floor, price per MMBTU	2.50
Gas Contracts, Price per MMBTU \| Collar Contract One for Q3 and Q4
Derivative [Line Items]
Ceiling, price per MMBTU	3.30
Floor, price per MMBTU	2.50
Gas Contracts, Price per MMBTU \| Collar Contract One for 2019
Derivative [Line Items]
Ceiling, price per MMBTU	3.30
Floor, price per MMBTU	2.50
Gas Contracts, Price per MMBTU \| Collar Contract One
Derivative [Line Items]
Ceiling, price per MMBTU	3.30
Floor, price per MMBTU	2.50
Gas Contracts, Price per MMBTU \| Collar Contract Two for Q3
Derivative [Line Items]
Ceiling, price per MMBTU	3.50
Floor, price per MMBTU	2.50
Gas Contracts, Price per MMBTU \| Collar Contract Two for Q4
Derivative [Line Items]
Ceiling, price per MMBTU	3.50
Floor, price per MMBTU	2.50
Gas Contracts, Price per MMBTU \| Collar Contract Two for Q3 and Q4
Derivative [Line Items]
Ceiling, price per MMBTU	3.50
Floor, price per MMBTU	2.50
Gas Contracts, Price per MMBTU \| Collar Contract Two for 2019
Derivative [Line Items]
Ceiling, price per MMBTU	3.50
Floor, price per MMBTU	2.50
Gas Contracts, Price per MMBTU \| Collar Contract Two
Derivative [Line Items]
Ceiling, price per MMBTU	3.50
Floor, price per MMBTU	2.50

Summary of Significant Accounting Policies - Schedule of Derivative Instruments (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Derivative [Line Items]
Net Fair Value Presented in the Consolidated Balance Sheet, Asset Derivatives - current		$ 1,318
Net Fair Value Presented in the Consolidated Balance Sheet, Liabilities Derivatives - current	$ 230
Natural Gas Price Derivatives \| Derivative Financial Instruments – Current
Derivative [Line Items]
Asset Derivatives, Fair Value	79	1,318
Gross Amounts Offset in the Consolidated Balance Sheet, Assets Derivatives	(79)	0
Net Fair Value Presented in the Consolidated Balance Sheet, Asset Derivatives - current	0	$ 1,318
Liability Derivatives, Fair Value	309
Gross Amounts Offset in the Consolidated Balance Sheet, Liabilities Derivatives	(79)
Net Fair Value Presented in the Consolidated Balance Sheet, Liabilities Derivatives - current	$ 230

Summary of Significant Accounting Policies - Schedule of Gains and Losses from Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative [Line Items]
Gain (loss) from derivative financial instruments	$ (1,638)	$ 5,295	$ 964	$ 13,155
Gain (Loss) from Derivative Financial Instruments \| Natural Gas Price Derivatives
Derivative [Line Items]
Gain (loss) from derivative financial instruments	$ (1,638)	$ 5,295	$ 964	$ 13,155

Summary of Significant Accounting Policies - Additional Information 2 (Detail) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) Unit $ / shares $ / EquityUnit shares	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Unit Product $ / shares $ / EquityUnit shares	Jun. 30, 2017 USD ($)	Dec. 31, 2017 shares
Operations And Summary Of Significant Accounting Policies [Line Items]
Stock-based compensation expense recognized			$ 3,109	$ 2,815
Number of primary products \| Product			2
Contract cash settlement max days			25 days
Contract cancellable notice term			30 days
Accounts Receivable related to satisfied performance obligations and unconditional right to consideration	$ 21,500		$ 21,500
Restricted Stock
Operations And Summary Of Significant Accounting Policies [Line Items]
Number of shares granted \| shares			445,801
Restricted stock grant date fair value			$ 3,800
Grant date fair value of share units, per share \| $ / shares			$ 8.46
Shares of unvested restricted stock outstanding \| shares	803,955		803,955		619,867
Weighted average grant date fair value of stock grants per share \| $ / shares	$ 8.43		$ 8.43
Unrecognized compensation cost related to unvested restricted stock	$ 5,700		$ 5,700
Period in which compensation cost expected to be recognized			2 years 2 months 12 days
Potential Performance Shares (PSU)
Operations And Summary Of Significant Accounting Policies [Line Items]
Period in which compensation cost expected to be recognized			2 years 3 months 18 days
Number of units granted \| Unit			360,801
Performance share units grant date fair value			$ 4,500
Grant date fair value of share units, per unit \| $ / EquityUnit			12.52
Number of performance stock units ("PSUs") outstanding \| Unit	514,336		514,336
Weighted average grant date fair value of PSUs per unit \| $ / EquityUnit	13.83		13.83
Minimum final number of shares of common stock issuable based on performance multiplier \| shares			0
Maximum final number of shares of common stock issuable based on performance multiplier \| shares			1,028,672
Unrecognized expense, performance share units			$ 6,200
General and Administrative Expense
Operations And Summary Of Significant Accounting Policies [Line Items]
Stock-based compensation expense recognized	$ 1,500	$ 1,500	$ 3,100	$ 2,800

Summary of Significant Accounting Policies - Consolidated Income Tax Provision (Benefit) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Current - State	$ 24	$ 21	$ 34	$ 97
Deferred - State	(597)	496	(1,051)	855
Deferred - Federal	451		1,477
Total	$ (122)	$ 517	$ 460	$ 952

Summary of Significant Accounting Policies - Additional Information 3 (Detail) - USD ($)		3 Months Ended		6 Months Ended
	Dec. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Operations And Summary Of Significant Accounting Policies [Line Items]
Federal statutory rate		21.00%	35.00%	21.00%	35.00%
Operating losses carryforward indefinitely with no carryback as percentage of taxable income				80.00%
Interest expense threshold percentage of adjusted taxable income beyond which interest expense is deductible				30.00%
Deferred federal tax, Remeasurement Rate				21.00%
Deferred federal tax, Remeasurement Value	$ 140,400,000
Refundable unused AMT credit carryforward, Percentage				50.00%
Refundable unused alternative minimum tax credit carryforward years				2018 through 2020
Refundable unused AMT credit carryforward, Valuation Allowance	19,100,000
Refundable unused AMT credit carryforward, year fully refunded by				2021
Cumulative common stock ownership change over three year period that would limit federal and state net operating loss carry forwards				50.00%
Derivative financial instruments, asset	$ 1,300,000
Net Fair Value Presented in the Consolidated Balance Sheet, Liabilities Derivatives - current		$ 230,000		$ 230,000
Fixed Rate Debt
Operations And Summary Of Significant Accounting Policies [Line Items]
Long-term debt, including current portion, Carrying Value		1,200,000,000		1,200,000,000
Level 2 \| Fixed Rate Debt
Operations And Summary Of Significant Accounting Policies [Line Items]
Long-term debt, including current portion, Fair Value		1,200,000,000		1,200,000,000
Fair Value, Measurements, Recurring \| Level 3
Operations And Summary Of Significant Accounting Policies [Line Items]
Financial assets		0		0
Financial liabilities		$ 0		$ 0

Summary of Significant Accounting Policies - Difference Between Federal Statutory Rate and Effective Tax Rate (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Tax at statutory rate	21.00%	35.00%	21.00%	35.00%
Tax effect of:
Valuation allowance on deferred tax assets	(24.10%)	(42.10%)	(24.30%)	(40.10%)
State income taxes, net of federal benefit	3.90%	5.00%	3.50%	4.30%
Nondeductible stock-based compensation	(0.40%)	(0.40%)	(0.70%)	(1.40%)
Effective tax rate	0.40%	(2.50%)	(0.50%)	(2.20%)

Summary of Significant Accounting Policies - Additional Information 4 (Detail) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Operations And Summary Of Significant Accounting Policies [Line Items]
Performance multiplier, minimum	0.00%
Performance multiplier, maximum	200.00%
Warrants for Common Stock exercise price	$ 0.01
Participating securities that share in losses	0	0
Interest paid in-kind	$ 20,014	$ 18,594
Convertible Notes
Operations And Summary Of Significant Accounting Policies [Line Items]
Interest paid in-kind	$ 20,000	$ 18,600
Restricted Stock
Operations And Summary Of Significant Accounting Policies [Line Items]
Shares of unvested restricted stock outstanding	803,955		619,867

Summary of Significant Accounting Policies - Basic and Diluted Loss Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Basic and diluted net loss attributable to common stock	$ (34,003)	$ (21,442)	$ (75,889)	$ (44,373)
Basic and diluted weighted average shares outstanding	15,340	14,749	15,212	14,488
Net loss per share – basic and diluted	$ (2.22)	$ (1.45)	$ (4.99)	$ (3.06)

Summary of Significant Accounting Policies - Weighted Average Shares of Unvested Restricted Stock (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Unvested restricted stock	857	659	846	582

Summary of Significant Accounting Policies - Common Stock Stock Options and Convertible Stock Anti-Dilutive to Earnings Excluded from Weighted Average Shares Used in Computation of Earning Per Share (Detail) shares in Thousands, EquityUnit in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 EquityUnit $ / shares $ / EquityUnit shares	Jun. 30, 2017 EquityUnit $ / shares $ / EquityUnit shares	Jun. 30, 2018 EquityUnit $ / shares $ / EquityUnit shares	Jun. 30, 2017 EquityUnit $ / shares $ / EquityUnit shares
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted average warrants for common stock \| shares	116	433	167	511
Weighted average PSUs \| EquityUnit	514	313	466	273
Weighted average grant date fair value per unit \| $ / EquityUnit	13.83	17.12	13.83	17.12
Weighted average contingently convertible shares \| shares	40,017	36,181	39,617	36,331
Warrants for Common Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted average exercise price per share \| $ / shares	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Contingently Convertible Shares
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted average exercise price per share \| $ / shares	$ 12.32	$ 12.32	$ 12.32	$ 12.32

Summary of Significant Accounting Policies - Cash Payments Made for Interest and Income Taxes (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Payments [Abstract]
Interest payments	$ 36,122	$ 37,846
Income tax payments	$ 2	$ 3

Long-Term Debt - Long-term Debt (Detail) - USD ($)
$ in Thousands

Jun. 30, 2018

Dec. 31, 2017

Debt Instrument [Line Items]

Debt issuance costs, net of amortization

$ (8,408)

Long-term Debt

1,153,333

$ 1,110,529

10% Senior Secured Toggle Notes due 2020

Debt Instrument [Line Items]

Principal

697,195

Discount, net of amortization

(7,070)

7¾% Convertible Second Lien PIK Notes due 2019

Debt Instrument [Line Items]

Principal

^[1]

295,465

Accrued interest payable in kind

^[1]

5,693

Discount, net of amortization

^[1]

(24,821)

9½% Convertible Second Lien PIK Notes due 2020

Debt Instrument [Line Items]

Principal

195,948

Accrued interest payable in kind

801

Discount, net of amortization

(27,077)

10% Senior Notes due 2020

Debt Instrument [Line Items]

Principal

2,805

7¾% Senior Notes due 2019

Debt Instrument [Line Items]

Principal

^[1]

17,959

Premium, net of amortization

^[1]

9½% Senior Notes due 2020

Debt Instrument [Line Items]

Principal

4,860

Discount, net of amortization

$ (56)

[1]	Classified as long-term debt as the Company intends to refinance this debt with new long-term debt - See Footnote 5-Jones Contribution and Financing Plans.

Long-Term Debt - Long-term Debt (Parenthetical) (Detail)	Jun. 30, 2018
10% Senior Secured Toggle Notes due 2020
Debt Instrument [Line Items]
Interest rate on debt instrument	10.00%
7¾% Convertible Second Lien PIK Notes due 2019
Debt Instrument [Line Items]
Interest rate on debt instrument	7.75%
9½% Convertible Second Lien PIK Notes due 2020
Debt Instrument [Line Items]
Interest rate on debt instrument	9.50%
10% Senior Notes due 2020
Debt Instrument [Line Items]
Interest rate on debt instrument	10.00%
7¾% Senior Notes due 2019
Debt Instrument [Line Items]
Interest rate on debt instrument	7.75%
9½% Senior Notes due 2020
Debt Instrument [Line Items]
Interest rate on debt instrument	9.50%

Long-Term Debt - Additional Information (Detail)	6 Months Ended
Long-Term Debt - Additional Information (Detail)	Jun. 30, 2018 USD ($) Day $ / shares	Jun. 30, 2017 USD ($) shares
Debt Instrument [Line Items]
Interest rate on senior notes, payment in kind	12.25%
Additional notes outstanding	$ 91,900,000
10% Senior Secured Toggle Notes due 2020
Debt Instrument [Line Items]
Interest payment terms	payable on March 15 and September 15
Maturity of senior notes	Mar. 15, 2020
Accrued interest by issuing additional notes	$ 75,000,000
Interest rate on senior notes	10.00%
10% Senior Notes due 2020
Debt Instrument [Line Items]
Interest payment terms	payable on March 15 and September 15
Maturity of senior notes	Mar. 15, 2020
Interest rate on senior notes	10.00%
7¾% Convertible Second Lien PIK Notes due 2019
Debt Instrument [Line Items]
Interest payment terms	payable on April 1 and October 1
Maturity of senior notes	Apr. 01, 2019
Interest rate on senior notes	7.75%
7¾% Senior Notes due 2019
Debt Instrument [Line Items]
Interest payment terms	payable on April 1 and October 1
Maturity of senior notes	Apr. 01, 2019
Interest rate on senior notes	7.75%
9½% Convertible Second Lien PIK Notes due 2020
Debt Instrument [Line Items]
Interest payment terms	payable on June 15 and December 15
Maturity of senior notes	Jun. 15, 2020
Interest rate on senior notes	9.50%
Convertible Second Lien PIK Notes
Debt Instrument [Line Items]
Debt instrument convertible conversion ratio	0.0812
Debt instrument convertible threshold consecutive trading days period \| Day	15
Convertible Second Lien PIK Notes \| Minimum
Debt Instrument [Line Items]
Daily volume weighted average price \| $ / shares	$ 12.32
Converted Notes
Debt Instrument [Line Items]
Debt instrument, principal amount and accrued interest		$ 9,900,000
Common stock shares exchanged for repayment of principal amount \| shares		826,327
9½% Senior Notes due 2020
Debt Instrument [Line Items]
Interest payment terms	payable on June 15 and December 15
Maturity of senior notes	Jun. 15, 2020
Interest rate on senior notes	9.50%

Long-Term Debt - Additional Information 1 (Detail) - Revolving Credit Facility	6 Months Ended
	Jun. 30, 2018 USD ($)
Debt Instrument [Line Items]
Bank credit facility	$ 50,000,000
Maturity of credit facility	Mar. 04, 2019
Credit facility amount outstanding	$ 0
Spread rate over LIBOR for interest rate on credit facility	2.50%
Stated percentage over federal funds rate to calculate base rate	0.50%
Stated percentage over 30 day LIBOR to calculate base rate	1.00%
Spread rate over base rate for interest rate on credit facility	1.50%
Commitment fee on unused borrowing base	0.50%
Current ratio	100.00%
Asset coverage ratio	250.00%

Stockholders' Equity - Additional Information (Detail) - $ / shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Equity [Abstract]
Warrants outstanding	51,449
Exercise price of warrants for common stock	$ 0.01
Common stock warrants exercised, Shares	363,638	246,793

Commitments and Contingencies - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2018 USD ($)
Commitments And Contingencies Disclosure [Abstract]
Natural gas transportation and treating agreements	through July 2019
Maximum commitments under natural gas transportation and treating agreements	$ 1.3
Contract term related to drilling services	through September 2019
Commitments for contracted drilling services	$ 19.3

Jones Contribution and Refinancing Plans - Additional Information (Detail) shares in Millions	Aug. 03, 2018 USD ($)	Jul. 13, 2018	May 09, 2018 USD ($) shares	Apr. 01, 2018 MBbls MMcf	Jul. 10, 2018 USD ($)
Subsequent Event \| 9¾% Senior Notes due 2026
Debt Instrument [Line Items]
Principal amount of notes issued	$ 850,000,000
Interest rate on debt instrument	9.75%
Debt instrument, issue price principal amount percentage	95.988%
Interest payment terms	payable on February 15 and August 15
Offering being held in escrow pending closing expected to occurred date	Aug. 14, 2018
New Bank Credit Facility \| Subsequent Event
Debt Instrument [Line Items]
Bank credit facility					$ 700,000,000
Tender Offer \| Subsequent Event
Debt Instrument [Line Items]
Tender offer commencement date		Jul. 13, 2018
Arkoma and Williston
Debt Instrument [Line Items]
Approximate shares to be issued for oil and gas properties \| shares			88.6
Oil and gas properties estimated fair value			$ 620,000,000
Approximate ownership percentage of pro forma outstanding shares			84.50%
Effective date of acquisition of properties				Apr. 01, 2018
Estimated oil proved reserves \| MBbls				22,800
Estimated gas proved reserves \| MMcf				49,300

Subsequent Events - Additional Information (Detail) - Subsequent Event - Caddo and DeSoto Parish, North Louisiana Properties $ in Millions	Jul. 31, 2018 USD ($) a Well Location
Subsequent Event [Line Items]
Acquired oil and gas properties \| $	$ 37.0
Oil and gas properties, gross acres \| a	21,000
Oil and gas properties, net acres \| a	9,900
Producing natural gas wells, gross \| Well	120
Producing natural gas wells, net \| Well	26.2
Producing Haynesville shale natural gas wells, gross \| Well	49
Producing Haynesville shale natural gas wells, net \| Well	14.7
Potential drilling locations, gross \| Location	112
Potential drilling locations, net \| Location	31.0
Potential operated drilling locations, gross \| Location	21
Potential operated drilling locations, net \| Location	17.9