Goodrich Petroleum 10-K 3 Mar 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Feb. 24, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	GOODRICH PETROLEUM CORP
Entity Central Index Key	943,861
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Amendment Flag	false
Trading Symbol	GDP
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding		9,108,826
Entity Public Float			$ 2.3

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Successor
CURRENT ASSETS:
Cash and cash equivalents	$ 36,850
Accounts receivable, trade and other, net of allowance	1,998
Accrued oil and natural gas revenue	3,142
Inventory	4,125
Prepaid expenses and other	755
Total current assets	46,870
PROPERTY AND EQUIPMENT:
Oil and natural gas properties (successful efforts method)	0
Unevaluated properties	24,206
Oil and gas properties (full cost method)	60,936
Furniture, fixtures and equipment	984
Property and equipment, gross	86,126
Less: Accumulated depletion, depreciation and amortization	(4,006)
Net property and equipment	82,120
Other	322
TOTAL ASSETS	129,312
CURRENT LIABILITIES:
Accounts payable	14,392
Accrued liabilities	3,882
Accrued abandonment costs	0
Fair value of oil and natural gas derivatives	0
Current portion of debt	0
Total current liabilities	18,274
Long term debt, net	47,205
Accrued abandonment cost	2,933
Other non-current liability	0
Total liabilities	68,412
Commitments and contingencies (See Note 11)
STOCKHOLDERS’ EQUITY/(DEFICIT):
Preferred stock	0
Common stock	91
Additional paid in capital	65,116
Retained earnings (accumulated deficit)	(4,307)
Total stockholders’ equity/(deficit)	60,900
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY/(DEFICIT)	$ 129,312
Predecessor
CURRENT ASSETS:
Cash and cash equivalents		$ 11,782
Accounts receivable, trade and other, net of allowance		1,255
Accrued oil and natural gas revenue		3,421
Inventory		5,652
Prepaid expenses and other		1,119
Total current assets		23,229
PROPERTY AND EQUIPMENT:
Oil and natural gas properties (successful efforts method)		974,012
Unevaluated properties		0
Oil and gas properties (full cost method)		0
Furniture, fixtures and equipment		7,592
Property and equipment, gross		981,604
Less: Accumulated depletion, depreciation and amortization		(911,072)
Net property and equipment		70,532
Other		90
TOTAL ASSETS		93,851
CURRENT LIABILITIES:
Accounts payable		19,673
Accrued liabilities		12,508
Accrued abandonment costs		83
Fair value of oil and natural gas derivatives		30
Current portion of debt		465,507
Total current liabilities		497,801
Long term debt, net		0
Accrued abandonment cost		3,645
Other non-current liability		490
Total liabilities		501,936
Commitments and contingencies (See Note 11)
STOCKHOLDERS’ EQUITY/(DEFICIT):
Common stock		12,782
Predecessor Treasury stock (zero and 173,641 shares, respectively)		(41)
Additional paid in capital		1,069,673
Retained earnings (accumulated deficit)		(1,492,001)
Total stockholders’ equity/(deficit)		(408,085)
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY/(DEFICIT)		93,851
Predecessor | Series B Cumulative Convertible Preferred Stock
STOCKHOLDERS’ EQUITY/(DEFICIT):
Preferred stock		1,491
Predecessor | Series C Cumulative Preferred Stock
STOCKHOLDERS’ EQUITY/(DEFICIT):
Preferred stock		3
Predecessor | Series D Cumulative Preferred Stock
STOCKHOLDERS’ EQUITY/(DEFICIT):
Preferred stock		4
Predecessor | Series E Cumulative Preferred Stock
STOCKHOLDERS’ EQUITY/(DEFICIT):
Preferred stock		$ 4

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Predecessor
Preferred stock, shares authorized (in shares)		10,000,000
Preferred stock, par value (in dollars per share)		$ 1
Common stock, par value (in dollar per share)		$ 0.20
Common stock, shares authorized (in shares)		150,000,000
Common stock, shares issued (in shares)		63,910,300
Common stock, shares outstanding (in shares)		63,910,300
Treasury stock, shares (in shares)		173,641
Predecessor | Series B Cumulative Convertible Preferred Stock
Preferred stock, shares issued (in shares)		1,491,459
Preferred stock, shares outstanding (in shares)		1,491,459
Predecessor | Series C Cumulative Preferred Stock
Preferred stock, shares issued (in shares)		3,125
Preferred stock, shares outstanding (in shares)		3,125
Predecessor | Series D Cumulative Preferred Stock
Preferred stock, shares issued (in shares)		3,736
Preferred stock, shares outstanding (in shares)		3,736
Predecessor | Series E Cumulative Preferred Stock
Preferred stock, shares issued (in shares)		3,553
Preferred stock, shares outstanding (in shares)		3,553
Successor
Preferred stock, shares authorized (in shares)	10,000,000
Preferred stock, par value (in dollars per share)	$ 1
Common stock, par value (in dollar per share)	$ 0.01
Common stock, shares authorized (in shares)	75,000,000
Common stock, shares issued (in shares)	9,108,826
Common stock, shares outstanding (in shares)	9,108,826
Treasury stock, shares (in shares)	0

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2015
Successor
REVENUES:
Oil and natural gas revenues	$ 6,537
Other	45
REVENUES:	6,582
OPERATING EXPENSES:
Lease operating expense	2,109
Production and other taxes	619
Transportation and processing	228
Depreciation, depletion and amortization	1,556
Exploration	0
Impairment	2,486
General and administrative	2,200
(Gain) loss on sale of assets	(2)
Other	0
OPERATING EXPENSES:	9,196
Operating loss	(2,614)
OTHER INCOME (EXPENSE):
Interest expense	(1,824)
Interest income and other	1
Gain on derivatives not designated as hedges	0
Gain on extinguishment of debt	0
Restructuring	0
OTHER INCOME (EXPENSE):	(1,823)
Reorganization items, net	130
Income (loss) before income taxes	(4,307)
Income tax provision	0
Net income (loss)	(4,307)
Preferred stock, net	0
Net income (loss) applicable to common stock	$ (4,307)
PER COMMON SHARE
Net income (loss) applicable to common stock—basic (in dollars per share)	$ (0.60)
Net income (loss) applicable to common stock—diluted (in dollars per share)	$ (0.60)
Weighted average common shares outstanding—basic (in shares)	7,184
Weighted average common shares outstanding—diluted (in shares)	7,184
Predecessor
REVENUES:
Oil and natural gas revenues		$ 21,027	$ 79,077
Other		(341)	(1,427)
REVENUES:		20,686	77,650
OPERATING EXPENSES:
Lease operating expense		6,504	15,522
Production and other taxes		1,946	4,639
Transportation and processing		1,265	4,663
Depreciation, depletion and amortization		8,276	79,339
Exploration		577	41,783
Impairment		1,583	452,037
General and administrative		14,474	27,702
(Gain) loss on sale of assets		(840)	(53,451)
Other		0	(45)
OPERATING EXPENSES:		33,785	572,189
Operating loss		(13,099)	(494,539)
OTHER INCOME (EXPENSE):
Interest expense		(11,398)	(54,807)
Interest income and other		117	0
Gain on derivatives not designated as hedges		30	7,367
Gain on extinguishment of debt		0	62,555
Restructuring		(5,128)	0
OTHER INCOME (EXPENSE):		(16,379)	15,115
Reorganization items, net		399,422	0
Income (loss) before income taxes		369,944	(479,424)
Income tax provision		0	0
Net income (loss)		369,944	(479,424)
Preferred stock, net		11,237	(69,544)
Net income (loss) applicable to common stock		$ 358,707	$ (409,880)
PER COMMON SHARE
Net income (loss) applicable to common stock—basic (in dollars per share)		$ 4.64	$ (7.28)
Net income (loss) applicable to common stock—diluted (in dollars per share)		$ 3.69	$ (7.28)
Weighted average common shares outstanding—basic (in shares)		77,236	56,315
Weighted average common shares outstanding—diluted (in shares)		98,369	56,315

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2015
Successor
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (4,307)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depletion, depreciation and amortization	1,556
(Gain) on derivatives not designated as hedges	0
Net cash received in settlement of derivative instruments	0
Impairment	2,486
Exploration costs	0
Embedded derivative	0
Amortization of leasehold costs	0
Share based compensation (non-cash)	240
Gain on sale of assets	0
Gain on extinguishment of debt	0
Amortization of finance cost and debt discount	1,518
Reorganization items	(6,658)
Inventory Write-down	0
Amortization of transportation obligation	0
Change in assets and liabilities:
Accounts receivable, trade and other, net of allowance	(1,408)
Accrued oil and natural gas revenue	1,065
Inventory	0
Prepaid expenses and other	(66)
Accounts payable	1,631
Accrued liabilities	(384)
Net cash used in operating activities	(4,327)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(3,232)
Proceeds from sale of assets	849
Net cash used in investing activities	(2,383)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments of bank borrowings	(23,742)
Proceeds from bank borrowings	0
Proceeds from equity offering, net of issuance costs	23,622
Proceeds from Second Lien Notes	40,000
Note conversions	0
Debt issuance costs	0
Preferred stock dividends	0
Other	0
Net cash provided by financing activities	39,880
Increase (decrease) in cash and cash equivalents	33,170
Cash and cash equivalents, beginning of period	3,680
Cash and cash equivalents, end of period	36,850	$ 3,680
Supplemental disclosures of cash flow information:
Cash paid during the year for interest	498
Cash paid during the year for taxes	0
Predecessor
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)		369,944	$ (479,424)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depletion, depreciation and amortization		8,276	79,339
(Gain) on derivatives not designated as hedges		(30)	(7,367)
Net cash received in settlement of derivative instruments		0	54,274
Impairment		1,583	452,037
Exploration costs		0	7,404
Embedded derivative		(5,538)	0
Amortization of leasehold costs		67	32,209
Share based compensation (non-cash)		3,307	6,689
Gain on sale of assets		(840)	(53,451)
Gain on extinguishment of debt		0	(62,555)
Amortization of finance cost and debt discount		7,425	12,415
Reorganization items		(410,875)	0
Inventory Write-down		0	1,168
Amortization of transportation obligation		156	469
Change in assets and liabilities:
Accounts receivable, trade and other, net of allowance		724	11,573
Accrued oil and natural gas revenue		(786)	11,707
Inventory		(265)	(5,822)
Prepaid expenses and other		811	785
Accounts payable		(4,332)	(70,993)
Accrued liabilities		13,689	(7,468)
Net cash used in operating activities		(16,684)	(17,011)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures		(3,789)	(118,407)
Proceeds from sale of assets		294	113,533
Net cash used in investing activities		(3,495)	(4,874)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments of bank borrowings		0	(332,500)
Proceeds from bank borrowings		13,000	238,500
Proceeds from equity offering, net of issuance costs		0	47,480
Proceeds from Second Lien Notes		0	100,000
Note conversions		(804)	(434)
Debt issuance costs		(114)	(4,027)
Preferred stock dividends		0	(14,861)
Other		(5)	(499)
Net cash provided by financing activities		12,077	33,659
Increase (decrease) in cash and cash equivalents		(8,102)	11,774
Cash and cash equivalents, beginning of period	$ 3,680	11,782	8
Cash and cash equivalents, end of period		3,680	11,782
Supplemental disclosures of cash flow information:
Cash paid during the year for interest		1,656	22,279
Cash paid during the year for taxes		$ 0	$ 0

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity/(Deficit) - USD ($) shares in Thousands, $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in	Treasury Stock	Retained Earnings/
Balance (Predecessor) at Dec. 31, 2014	$ (15,774)	$ 2,259	$ 9,021	$ 1,066,770	$ 0	$ (1,093,824)
Balance (in shares) (Predecessor) at Dec. 31, 2014		2,259	45,105		0
Net income (loss) | Predecessor	(479,424)					(479,424)
Employee stock plans (in shares) | Predecessor			870
Employee stock plans | Predecessor	6,689		$ 174	6,515
Preferred stock exchange (in shares) | Predecessor		(757)
Preferred stock exchange | Predecessor	(95,680)	$ (757)		(94,923)
Director stock grants (in shares) | Predecessor			249
Director stock grants | Predecessor	685		$ 50	635
Preferred stock conversions (in shares) | Predecessor			477
Preferred stock conversions | Predecessor	(54)		$ 95	(149)
Warrant issuance | Predecessor	17,473			17,473
Repurchases of stock (in shares) | Predecessor					(173)
Repurchases of stock | Predecessor	(41)				$ (41)
Equity offering (in shares) | Predecessor			12,000
Equity offering | Predecessor	47,480		$ 2,400	45,080
Convertible note issuance | Predecessor	12,677			12,677
Note conversions (in shares) | Predecessor			5,209
Note conversions | Predecessor	16,637		$ 1,042	15,595
Dividends | Predecessor	81,247					81,247
Balance (Predecessor) at Dec. 31, 2015	(408,085)	$ 1,502	$ 12,782	1,069,673	$ (41)	(1,492,001)
Balance (in shares) (Predecessor) at Dec. 31, 2015		1,502	63,910		(173)
Net income (loss) | Predecessor	369,944					369,944
Preferred stock dividends | Predecessor	4,112					4,112
Preferred stock conversions (in shares) | Predecessor		(9)	6,102
Preferred stock conversions | Predecessor	(4,111)	$ (9)	$ 1,220	(5,322)
Share based compensation | Predecessor	6,115			6,115
Warrant issuance | Predecessor	403			403
Repurchases of stock (in shares) | Predecessor			146		(47)
Repurchases of stock | Predecessor	(5)		$ 29	(29)	$ (5)
Note conversions (in shares) | Predecessor			9,818
Note conversions | Predecessor	31,627		$ 1,964	29,663
Balance (Predecessor) at Oct. 12, 2016	0	1,493	15,995	1,100,503	(46)	(1,117,945)
Balance (Successor) at Oct. 12, 2016	0	$ 0	$ 0	0	$ 0	0
Balance (in shares) (Predecessor) at Oct. 12, 2016		1,493	79,976		(220)
Balance (in shares) (Successor) at Oct. 12, 2016		0	0		0
Net income (loss) | Successor	(4,307)					(4,307)
Issuance of common stock and warrants (in shares) | Successor			6,836
Net Loss | Successor	30,380		$ 68	30,312		0
Share based compensation | Successor	240			240
Warrant issuance | Successor	10,964			10,964
Equity offering (in shares) | Successor			2,273
Equity offering | Successor	23,750		$ 23	23,727
Issuance Cost | Successor	(127)			(127)
Balance (Successor) at Dec. 31, 2016	$ 60,900	$ 0	$ 91	$ 65,116	$ 0	$ (4,307)
Balance (in shares) (Successor) at Dec. 31, 2016		0	9,109		0

Description of Business, Manage

Description of Business, Management Plan and Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Description of Business and Management Plan	Description of Business and Management Plan Goodrich Petroleum Corporation (together with its subsidiary, “we,” “our,” or the “Company”) is an independent oil and natural gas company engaged in the exploration, development and production of oil and natural gas on properties primarily in (i) Southwest Mississippi and Southeast Louisiana, which includes the Tuscaloosa Marine Shale Trend (“TMS”), (ii) Northwest Louisiana and East Texas, which includes the Haynesville Shale, and (iii) South Texas, which includes the Eagle Ford Shale Trend. Emergence from Voluntary Reorganization under Chapter 11 of the Bankruptcy Code On April 15, 2016 (the “Petition Date”), Goodrich Petroleum Corporation and its subsidiary Goodrich Petroleum Company, L.L.C. (the “Subsidiary”, and together with the Company, the “Debtors”) filed voluntary petitions (the “Bankruptcy Petitions” and, the cases commenced thereby, the “Chapter 11 Cases”) seeking relief under Chapter 11 of Title 11 of the United States Bankruptcy Code (the “Bankruptcy Code”) in the United States Bankruptcy Court for the Southern District of Texas, Houston Division (the “Bankruptcy Court”), to pursue a Chapter 11 plan of reorganization. The Company filed a motion with the Bankruptcy Court seeking joint administration of the Chapter 11 Cases under the caption In re Goodrich Petroleum Corporation, et al. (Case No. 16-31975). The Debtors received Bankruptcy Court confirmation of their joint plan of reorganization (the "Plan of Organization") on September 28, 2016 (the "Approval Date") and subsequently emerged from bankruptcy on October 12, 2016 (the "Effective Date"). Although the Company is no longer a debtor-in-possession, the Company was a debtor-in-possession until emergence on October 12, 2016. As such, aspects of the Company’s bankruptcy proceedings and related matters are described below in order to provide context and explain a part of our financial condition and results of operations for the period presented. The Company is accounting for the bankruptcy in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 852, “Reorganizations. The Company filed a series of first day motions with the Bankruptcy Court that allowed it to continue to conduct business without interruption. These motions were signed primarily to minimize the impact on the Company’s operations, customers and employees. Prior to filing the Chapter 11 Cases, on March 28, 2016, the Company entered into a Restructuring Support Agreement (the “Restructuring Support Agreement”) with certain holders of the Company’s 8.0% Second Lien Senior Secured Notes due 2018 (the “ 8.0% Second Lien Notes”) and 8.875% Second Lien Senior Secured Notes due 2018 (the “ 8.875% Second Lien Notes” and together with the 8.0% Second Lien Notes, the “Second Lien Notes”). The Restructuring Support Agreement set forth, subject to certain conditions, the commitment to and obligations of, on the one hand, the Debtors, and on the other hand, the certain holders, in connection with the restructuring of the Company’s Second Lien Notes, 3.25% Convertible Senior Notes due 2026 (the “2026 Notes”), 5.0% Convertible Senior Notes due 2029 (the “2029 Notes”), 5.0% Convertible Senior Notes due 2032 (the “2032 Notes”), 5.0% Convertible Exchange Senior Notes due 2032 (the “2032 Exchange Notes”), 8.875% Senior Notes due 2019 (“the 2019 Notes”), 5.375% Series B Cumulative Convertible Preferred Stock (“Series B Preferred Stock”), 10% Series C Cumulative Preferred Stock (“Series C Preferred Stock”), 9.75% Series D Cumulative Preferred Stock (“Series D Preferred Stock”), 10% Series E Cumulative Convertible Preferred Stock (“Series E Preferred Stock”) and the Company’s common stock, par value $0.20 per share, pursuant to the Company’s Joint Prepackaged Plan of Reorganization filed under Chapter 11 of the United States Bankruptcy Code on the Petition Date. On May 21, 2016, the Restructuring Support Agreement was terminated automatically pursuant to its terms as an Assumption Order approving the Restructuring Support Agreement was not entered by the Bankruptcy Court within thirty-five days of the Petition Date. See discussion on the Plan of Reorganization below. As discussed above, during the pendency of the Chapter 11 Cases, we operated our business as "debtors-in-possession" under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code. On October 12, 2016, we completed our financial restructuring and emerged from Chapter 11 bankruptcy proceedings after completing all required actions and satisfying all remaining conditions as required by the Bankruptcy Court. Our financial statements reflect material adjustments related to our Plan of Reorganization and the application of fresh start accounting guidance upon emergence. Effects of the Bankruptcy Proceedings The Chapter 11 Cases described above constituted an event of default that accelerated the Company’s obligations under all of its outstanding debt instruments. The agreements governing the Company’s debt instruments at the time provided that as a result of the Bankruptcy Petitions, the principal and interest due thereunder was immediately due and payable. However, any efforts to enforce such payment obligations under the Company’s debt instruments were automatically stayed as a result of the Chapter 11 Cases, and the creditors’ rights of enforcement in respect of the debt instruments was subject to the applicable provisions of the Bankruptcy Code and orders of the Bankruptcy Court. On April 18, 2016, the Bankruptcy Court issued certain additional interim and final orders with respect to the Debtors’ first-day motions and other operating motions that allowed the Debtors to operate their businesses in the ordinary course. Subject to certain exceptions under the Bankruptcy Code, the filing of the Bankruptcy Petitions automatically enjoined, or stayed, the continuation of any judicial or administrative proceedings or other actions against the Debtors or their property to recover, collect or secure a claim arising prior to the filing of the Bankruptcy Petitions. Thus, for example, most creditor actions to obtain possession of property from the Debtors, or to create, perfect or enforce any lien against the Debtors’ property, or to collect on monies owed or otherwise exercise rights or remedies with respect to a pre-petition claim were enjoined. During the Chapter 11 Cases, the Company conducted normal business activities and was authorized to continue to pay and has paid (subject to limitations applicable to payments of certain pre-petition obligations) pre-petition employee wages and benefits, pre-petition amounts owed to certain lienholders, critical vendors and other third parties, such as royalty holders and partners. On July 25, 2016 the Company entered into and filed a motion with the Bankruptcy Court to approve a commitment letter (the “Commitment Letter”) with a group of investors for the new issuance of 13.50% Convertible Senior Secured Second Lien Notes in the initial aggregate principal amount of $40.0 million (the “Convertible Second Lien Notes”). The Bankruptcy Court approved the motion on August 4, 2016 which allowed the Company to submit a revised plan of organization to the Bankruptcy Court. The approval by the Bankruptcy Court of the Commitment Letter terminated the bid procedures that were previously approved by the Bankruptcy Court on July 1, 2016. The Commitment Letter provided for the issuance of $40.0 million in Convertible Second Lien Notes that mature on the later of August 30, 2019 or six months after the maturity of the Exit Credit Agreement (including all amendments, the “Exit Credit Facility”), discussed below. Interest on the Convertible Second Lien Notes will accrue at a rate of 13.50% per annum and be paid quarterly in cash or paid in kind by adding to the principal at the option of the issuer. The Convertible Second Lien Notes will convert at the option of the purchaser into a number of common shares equal to 15% of the common stock of the reorganized company. Upon closing, purchasers of the Convertible Second Lien Notes (i) were issued 10 -year costless warrants for common stock equal to 20% of the new common stock of the reorganized company, (ii) took a second priority lien on all assets of the reorganized company, and (iii) received the right to appoint two members to the Board of Directors (the “Board”) of the reorganized company. A total of $20.0 million in proceeds from the issuance of the Convertible Second Lien Notes were used to repay amounts outstanding under the existing Second Amended and Restated Credit Agreement (including all amendments, the “Senior Credit Facility”) and $20.0 million in proceeds will be used to fund the Company’s Haynesville Shale Trend drilling program. On the Effective Date, upon consummation of the Plan of Organization, the Company entered into an Exit Credit Agreement (the “Exit Credit Agreement”) with the Subsidiary, as borrower (the “Borrower”), and Wells Fargo Bank, National Association, as administrative agent (“the Administrative Agent”), and certain other lenders party thereto. Pursuant to the Exit Credit Agreement, the lenders party thereto have agreed to provide the Borrower with a $20.0 million senior secured term loan credit facility, with an outstanding principal amount of $20.0 million . Plan of Reorganization The significant features of the Plan of Reorganization confirmed by the Bankruptcy Court are as follows: 1. Each holder of an allowed priority claim (other than a priority tax claim or administrative claim) received either: (a) cash equal to the full allowed amount of its claim or (b) such other treatment as may otherwise be agreed to by such holder, the Debtors, the holders of at least 50% in principal amount of the Second Lien Notes (the “Majority Consenting Noteholders”), and the purchasers of the new Convertible Second Lien Notes (“New 2L Notes Purchasers”); 2. Each holder of a secured claim (other than a priority tax claim, Senior Credit Facility claim, or Second Lien Notes claim) received, at the Debtors’ election and with the consent of the Majority Consenting Noteholders, either: (a) cash equal to the full allowed amount of its claim, (b) reinstatement of such holder’s claim, (c) the return or abandonment of the collateral securing such claim to such holder, or (d) such other treatment as may otherwise be agreed to by such holder, the Debtors, the Majority Consenting Noteholders, and the New 2L Notes Purchasers; 3. The Senior Credit Facility claims were paid cash in an amount sufficient to reduce the Senior Credit Facility claims to a balance of $20.0 million while the remaining $20.0 million owed was to be refinanced into a new senior secured term loan credit facility; 4. The Second Lien Notes claims were deemed allowed in the aggregate amount of $175.0 million of principal plus accrued and unpaid interest through the Petition Date. Except to the extent a holder of a Second Lien Note claim agreed in writing to less favorable treatment, in full and final satisfaction, settlement, release, and discharge of, and in exchange for, each Second Lien Notes claim, each holder of a Second Lien Notes claim received their pro rata share of 98% of the new equity interests in the reorganized company (the “New Equity Interests”), subject to dilution on account of (i) the management incentive plan, (ii) the potential conversion of the Convertible Second Lien Notes, (iii) the warrants granted to the New 2L Notes Purchasers, and (iv) the out-of-the-money warrants equal to an aggregate of up to 10% of the New Equity Interests with a maturity of 10 years and an equity strike price equal to $230.0 million ; 5. Holders of unsecured notes claims received, pro rata with holders of other general unsecured claims, their pro rata share of the out-of-the-money warrants equal to an aggregate of up to 10% of the New Equity Interests with a maturity of 10 years and an equity strike price equal to $230.0 million ; plus its pro rata share of 2% of the New Equity Interests that are subject to dilution on account of (i) the management incentive plan, (ii) the potential conversion of the Convertible Second Lien Notes, (iii) the warrants granted to the New 2L Notes Purchasers, and (iv) the out-of-the-money warrants equal to an aggregate of up to 10% of the New Equity Interests with a maturity of 10 years and an equity strike price equal of $230.0 million ; 6. Holders of allowed general unsecured claims had the option to elect on their ballot to (a) receive, pro rata with holders of unsecured notes claims, its pro rata share of the out-of-the-money warrants equal to an aggregate of up to 10% of the New Equity Interests with a maturity of 10 years and an equity strike price equal to $230.0 million ; plus its pro rata share of 2% of the New Equity Interests that are subject to dilution on account of (i) the management incentive plan, (ii) the potential conversion of the Convertible Second Lien Notes, (iii) the warrants granted to the New 2L Notes Purchasers, and (iv) the out-of-the-money warrants equal to an aggregate of up to 10% of the New Equity Interests with a maturity of 10 years and an equity strike price equal to $230.0 million , or (b) treat its allowed general unsecured claim as a convenience class claim by releasing any claims in excess of $10,000 ; 7. Holders of convenience class claims received either: (a) cash equal to the full allowed amount of such holder’s claim or (b) such lesser treatment as may otherwise be agreed to by such holder, the Debtors, the Majority Consenting Noteholders and the New 2L Notes Purchasers; 8. Equity interests in the Subsidiary were canceled and extinguished without further notice to, approval of, or action by any entity, and each holder of an equity interest in the Subsidiary did not receive any distribution or retain any property on account of such equity interest in the Subsidiary. Equity interests in the Company were canceled and extinguished without further notice to, approval of, or action by any entity, and each holder of an equity interest in the Company did not receive any distribution or retain any property on account of such equity interest in the Company.

Summary of Significant Accounti

Summary of Significant Accounting Policies (Notes)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation During the pendency of the Chapter 11 Cases, we operated our business as "debtors-in-possession" under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code. ASC 852-10 applies to entities that have filed a petition for bankruptcy under Chapter 11 of the Bankruptcy Code. The guidance requires that transactions and events directly associated with the reorganization be distinguished from the ongoing operations of the business. In addition, the guidance provides for changes in the accounting and presentation of liabilities, as well as expenses and income directly associated with the Chapter 11 Cases. In accordance with accounting principles generally accepted in the United States (“US GAAP”), we have applied ASC 852 “Reorganizations”, in preparing our consolidated financial statements. ASC 852 requires that the financial statements, for periods subsequent to the filing of the Bankruptcy Petitions, distinguish transactions and events that are directly associated with the reorganization from the ongoing operations of the business. Accordingly, certain expenses, realized gains and losses and provisions for losses that are realized or incurred in the Chapter 11 Cases are recorded in “Reorganization items, net” in the accompanying Consolidated Statements of Operations. While operating as debtors-in-possession under Chapter 11 of the Bankruptcy Code, we could sell or otherwise dispose of or liquidate assets or settle liabilities in amounts other than those reflected in our consolidated financial statements, subject to the approval of the Bankruptcy Court or otherwise as permitted in the ordinary course of business. Further, the Plan of Reorganization materially changed the amounts and classifications in our historical consolidated financial statements. Fresh Start Accounting —We applied fresh start accounting upon emergence from bankruptcy on the Effective Date. This resulted in the Company becoming a new entity for financial reporting purposes. Upon adoption of fresh start accounting, our assets and liabilities were recorded at their fair values as of the Effective Date. The Effective Date fair values of our assets and liabilities differed from the recorded values of our assets and liabilities as reflected in our consolidated financial statements as of October 12, 2016. The related adjustments were recorded in our consolidated statement of operations as reorganization items for the period April 15, 2016 to October 12, 2016 (Predecessor Company). As a result, our consolidated balance sheets and consolidated statement of operations subsequent to the Effective Date will not be comparable to our consolidated balance sheets and statements of operations prior to the Effective Date. Our consolidated financial statements and related footnotes are presented in a format that illustrates the lack of comparability between amounts presented on or after October 12, 2016 and dates prior. Our financial results for future periods following the application of fresh-start accounting will be different from historical trends and the differences may be material. References to the Successor relate to the Company on and subsequent to the Effective Date. References to the Predecessor refer to the Company prior to the Effective Date. The consolidated financial statements of the Successor have been prepared assuming that the Company will continue as a going concern and contemplate the realization of assets and the satisfaction of liabilities in the normal course of business. Principles of Consolidation —The consolidated financial statements of the Company included in this Annual Report on Form 10-K have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) and in accordance with US GAAP. The consolidated financial statements include the financial statements of Goodrich Petroleum Corporation and its wholly-owned subsidiary. Intercompany balances and transactions have been eliminated in consolidation. The consolidated financial statements reflect all normal recurring adjustments that, in the opinion of management, are necessary for a fair presentation. Certain data in prior period financial statements have been adjusted to conform to the presentation of the current period. We have evaluated subsequent events through the date of this filing. Use of Estimates —Our Management has made a number of estimates and assumptions relating to the reporting of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities to prepare these consolidated financial statements in conformity with US GAAP. Cash and Cash Equivalents —Cash and cash equivalents include cash on hand, demand deposit accounts and temporary cash investments with maturities of ninety days or less at date of purchase. Accounts Payable —Accounts payable consists of $2.0 million in trade accounts payable for amounts due vendors, $10.9 million in revenue payable for amounts due to royalty and working interest owners, $1.3 million due to joint interest owners and $0.2 million due on severance taxes and other. We accrue a reserve on a receivable when, based on the judgment of management, it is probable that a receivable will not be collected and the amount of the reserve may be reasonably estimated. Inventory –Inventory consists of casing and tubulars that are expected to be used in our capital drilling program and oil in storage tanks. Inventory is carried on the Consolidated Balance Sheets at the lower of cost or market. Property and Equipment--Transition from Successful Efforts Method to Full Cost Accounting Method-- Under U.S. Generally Accepted Accounting Principles ("GAAP"), two acceptable methods of accounting for oil and gas properties are allowed. These are the Successful Efforts Method and the Full Cost Method. Entities engaged in the production of oil and gas have the option of selecting either method for application in the accounting for their properties. The principal differences between the two methods are in the treatment of exploration costs, the computation of DD&A expense and the assessment of impairment of oil and gas properties. Prior to October 12, 2016, we followed the Successful Efforts Method of Accounting for exploration and development expenditures. Under this method, costs of acquiring unproved and proved oil and natural gas leasehold acreage are capitalized. When proved reserves are found on an unproved property, the associated leasehold cost is transferred to proved properties. Significant unproved leases are reviewed periodically, and a valuation allowance is provided for any estimated decline in value. Costs of all other unproved leases are amortized over the estimated average holding period of the leases. Development costs are capitalized, including the costs of unsuccessful development wells. Additionally, oil and gas properties are assessed for impairment in accordance with Accounting Standards Codification 360. Because a new entity has been created at the Effective Date, and there is no comparability to the predecessor company financial statements (see Note 3), upon emergence from bankruptcy we elected to adopt the Full Cost Method of Accounting. We believe that the true cost of developing a “portfolio” of reserves should reflect both successful and unsuccessful attempts at exploration and production. Application of the Full Cost Method of accounting will better reflect the true economics of exploring for and developing our oil and gas reserves. Therefore, as of October 12, 2016, we have used the Full Cost Method to account for our investment in oil and gas properties in the reorganized company. Under the Full Cost Method, we will capitalize all costs associated with acquisitions, exploration, development and estimated abandonment costs. We capitalize internal costs that can be directly identified with the acquisition of leasehold, as well as drilling and completion activities, but do not include any costs related to production, general corporate overhead or similar activities. Unevaluated property costs are excluded from the amortization base until we make a determination as to the existence of proved reserves on the respective property or impairment. We review our unevaluated properties at the end of each quarter to determine whether the costs should be reclassified to proved oil and gas properties and thereby subject to DD&A and the full cost ceiling test. Our sales of oil and gas properties are accounted for as adjustments to net proved oil and gas properties with no gain or loss recognized, unless the adjustment would significantly alter the relationship between capitalized costs and proved reserves. We amortize our investment in oil and gas properties through DD&A expense using the units of production (the “UOP”) method. This entails the quarterly provision for DD&A expense being computed by dividing production volumes for the period by the total proved reserves as of the beginning of the period (beginning of period reserves being determined by adding production to the end of period reserves), and applying the respective rate to the net cost of proved oil and gas properties and future development costs. Full Cost Ceiling Test-- The Full Cost Method requires that at the conclusion of each financial reporting period, the present value of estimated future net cash flows from proved reserves (adjusted for hedges and excluding cash flows related to estimated abandonment costs), be compared to the net capitalized costs of proved oil and gas properties, net of related deferred taxes. This comparison is referred to as a "ceiling test". If the net capitalized costs of proved oil and gas properties exceed the estimated discounted future net cash flows from proved reserves, we are required to write-down the value of our oil and gas properties to the value of the discounted cash flows. Estimated future net cash flows from proved reserves are calculated based on a 12-month average pricing assumption. The Full Cost Ceiling Test performed as of December 31, 2016 resulted in recording a $2.5 million write-down of the Successor oil and gas properties. Exploration - Prior to October 12, 2016, we followed the Successful Efforts Method of Accounting. Under Successful Efforts Method of Accounting exploration expenditures, including geological and geophysical costs, delay rentals and exploratory dry hole costs were expensed as incurred. Costs of drilling exploratory wells were initially capitalized pending determination of whether proved reserves can be attributed to the discovery. If management determined that commercial quantities of hydrocarbons have not been discovered, capitalized costs associated with exploratory wells were expensed. We had no capitalized exploratory well costs that were pending the determination of proved reserves as of December 31, 2015. Fair Value Measurement — Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value of an asset should reflect its highest and best use by market participants, whether in-use or an in-exchange valuation premise. The fair value of a liability should reflect the risk of nonperformance, which includes, among other things, our credit risk. We use various methods, including the income approach and market approach, to determine the fair values of our financial instruments that are measured at fair value on a recurring basis, which depend on a number of factors, including the availability of observable market data over the contractual term of the underlying instrument. For some of our instruments, the fair value is calculated based on directly observable market data or data available for similar instruments in similar markets. For other instruments, the fair value may be calculated based on these inputs as well as other assumptions related to estimates of future settlements of these instruments. We separate our financial instruments into three levels (levels 1, 2 and 3) based on our assessment of the availability of observable market data and the significance of non-observable data used to determine the fair value of our instruments. Our assessment of an instrument can change over time based on the maturity or liquidity of the instrument, which could result in a change in the classification of the instruments between levels. Each of these levels and our corresponding instruments classified by level are further described below: • Level 1 Inputs— unadjusted quoted market prices in active markets for identical assets or liabilities. Included in this level is our senior notes; • Level 2 Inputs—quotes which are derived principally from or corroborated by observable market data. Included in this level are our Senior Credit Facility and commodity derivatives whose fair values are based on third-party quotes or available interest rate information and commodity pricing data obtained from third party pricing sources and our creditworthiness or that of our counterparties; and • Level 3 Inputs—unobservable inputs for the asset or liability, such as discounted cash flow models or valuations, based on our various assumptions and future commodity prices. Included in this level would be acquisitions and impairments of oil and natural gas properties, our 2032 Exchange Notes, 8.0% Second Lien Notes, the embedded derivative associated with the 8.0% Second Lien Notes and 8.875% Second Lien Notes. As of December 31, 2016 , the carrying amounts of our cash and cash equivalents, trade receivables and payables represented fair value because of the short-term nature of these instruments. Impairment — Prior to October 12, 2016 under the Successful Efforts Method of Accounting, we periodically assess our long-lived assets recorded in oil and natural gas properties on the Consolidated Balance Sheets to ensure that they were not overstated or carried in excess of fair value, which was computed using level 3 inputs such as discounted cash flow models or valuations. Significant level 3 assumptions associated with discounted cash flow models or valuations used in the impairment evaluation include estimates of future crude oil and natural gas prices, production costs, development expenditures, anticipated production of proved reserves, appropriate risk-adjusted discount rates and other relevant data. An evaluation is performed on a field-by-field basis at least annually or whenever changes in facts and circumstances indicate that our oil and natural gas properties may be impaired. To determine if a field is impaired, we compared the carrying value of the field to the undiscounted future net cash flows by applying management’s estimates of proved reserves, future oil and natural gas prices, future production of oil and natural gas reserves and future operating costs over the economic life of the property. In addition, other factors such as probable and possible reserves are taken into consideration when justified by economic conditions and the availability of capital to develop proved undeveloped reserves. For each property determined to be impaired, we recognize an impairment loss equal to the difference between the estimated fair value and the carrying value of the field. Fair value is estimated to be the present value of expected future net cash flows. Any impairment charge incurred is recorded in accumulated depletion, depreciation and amortization to reduce the carrying value of the field. Each part of this calculation is subject to a large degree of judgment, including the determination of the fields’ estimated reserves, future cash flows and fair value. As of October 12, 2016, we had interests in oil and natural gas properties totaling $63.8 million , net of accumulated depletion, which we had accounted for under the successful efforts method. The expected future cash flows used for impairment reviews and related fair-value calculations are based on judgmental assessments of future production volumes, prices, and costs, considering all available information at the date of review. Due to the uncertainty inherent in these factors, we cannot predict when or if additional future impairment charges will be recorded. We estimate future net cash flows generated from our oil and natural gas properties using forecasted oil and natural gas prices published by the New York Mercantile Exchange (“NYMEX”). In the third and fourth quarters of 2015, the average NYMEX 5 -year forward strip pricing for oil and natural gas had significantly decreased compared to year end 2014. The declines in commodity prices was an indication that the carrying amount of certain of our oil and natural gas properties may not be recoverable from future cash flows. Our impairment analysis in the third quarter of 2015 resulted in the recording a $32.5 million impairment on certain of our natural gas properties, which reduced the impaired fields’ carrying value to an estimated fair value of $7.8 million at the end of the third quarter. During the fourth quarter of 2015, NYMEX forward 5 -year strip oil prices continued to decline by an average of 16% and natural gas strip prices continued to decline by an average of 6% . The price declines in the fourth quarter of 2015 resulted in recording an additional impairment of $419.6 million on both our oil and natural gas properties. The $419.6 million impairment recognized in the fourth quarter of 2015 reduced the carrying value of the impaired fields to an estimated fair value of $63.4 million as of December 31, 2015. In the aggregate we recorded $452.0 million of impairments during 2015. We recorded a $1.6 million impairment on the carrying value of our materials inventory on October 12, 2016 reducing our carrying value to $4.1 million on October 12, 2016. Depreciation —Depreciation and depletion of producing oil and natural gas properties is calculated using the units-of-production method. Proved developed reserves are used to compute unit rates for unamortized tangible and intangible development costs, and proved reserves are used for unamortized leasehold costs. Depreciation of furniture, fixtures and equipment, consisting of office furniture, computer hardware and software and leasehold improvements, is computed using the straight-line method over their estimated useful lives, which vary from three to five years. Asset Retirement Obligations —Asset retirement obligations are related to the abandonment and site restoration requirements that result from the exploration and development of our oil and gas properties. We record the fair value of a liability for an asset retirement obligation in the period in which it is incurred and a corresponding increase in the carrying amount of the related long-lived asset. Accretion expense is included in “Depreciation, depletion and amortization” on our Consolidated Statements of Operations. The estimated fair value of the Company’s asset retirement obligations at inception is determined by utilizing the income approach by applying a credit-adjusted risk-free rate, which takes into account the Company’s credit risk, the time value of money, and the current economic state, to the undiscounted expected abandonment cash flows. Given the unobservable nature of the inputs, the measurement of the asset retirement obligations was classified as Level 3 in the fair value hierarchy. Revenue Recognition —Oil and natural gas revenues are recognized when production is sold to a purchaser at a fixed or determinable price, when delivery has occurred and title has transferred, and if collectability of the revenue is probable. Revenues from the production of crude oil and natural gas properties in which we have an interest with other producers are recognized using the entitlements method. We record a liability or an asset for natural gas balancing when we have sold more or less than our working interest share of natural gas production, respectively. At December 31, 2016 and 2015, the net liability for natural gas balancing was immaterial. Differences between actual production and net working interest volumes are routinely adjusted. Derivative Instruments —We use derivative instruments such as futures, forwards, options, collars and swaps for purposes of hedging our exposure to fluctuations in the price of crude oil and natural gas and to hedge our exposure to changing interest rates. Accounting standards related to derivative instruments and hedging activities require that all derivative instruments subject to the requirements of those standards be measured at fair value and recognized as assets or liabilities in the balance sheet. We offset the fair value of our asset and liability positions with the same counterparty for each commodity type. Changes in fair value are required to be recognized in earnings unless specific hedge accounting criteria are met. We have not designated any of our derivative contracts as hedges; accordingly, changes in fair value are reflected in earnings. Income Taxes —We account for income taxes, as required, under the liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry-forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized. We recognize, as required, the financial statement benefit of an uncertain tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more-likely-than-not threshold, the amount recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement with the relevant tax authority. Earnings Per Share —Basic income or loss per common share is computed by dividing net income or loss available to common stockholders for each reporting period by the weighted-average number of common shares outstanding during the period. Diluted income or loss per common share is computed by dividing net income or loss available to common stockholders for each reporting period by the weighted average number of common shares outstanding during the period, plus the effects of potentially dilutive stock options and restricted stock calculated using the Treasury Stock method and the potential dilutive effect of the conversion of shares associated with Series B Preferred Stock, Series E Preferred Stock, 2026 Notes, 2029 Notes, 2032 Notes and the 2032 Exchange Notes. Commitments and Contingencies —Liabilities for loss contingencies, including environmental remediation costs, arising from claims, assessments, litigation, fines and penalties, and other sources are recorded when it is probable that a liability has been incurred and the amount of the assessment and/or remediation can be reasonably estimated. Recoveries from third parties, when probable of realization, are separately recorded and are not offset against the related environmental liability. Concentration of Credit Risk —Due to the nature of the industry, we sell our oil and natural gas production to a limited number of purchasers and, accordingly, amounts receivable from such purchasers could be significant. The revenues compared to our total oil and natural gas revenues from the top purchasers for the years ended December 31, 2016, and 2015 are as follows: Year Ended December 31, 2016 2015 Genesis Crude Oil LP 44 % 26 % Sunoco, Inc. 30 % 17 % Occidental Energy MA 13 % — % BP Energy Company — % 31 % Share-Based Compensation —We account for our share-based transactions using the fair value as of the grant date and recognize compensation expense over the requisite service period. The fair value of each restricted stock award is measured using the closing price of our common stock on the day of the award. Guarantee- As of the December 31, 2015 Goodrich Petroleum Company LLC, the wholly owned subsidiary of Goodrich Petroleum Corporation was the Subsidiary Guarantor of all our outstanding notes which included, the 8.875% Senior Notes due 2019, the 3.25% Convertible Senior Notes due 2026, the 5.0% Convertible Senior Notes due 2029, the 5.0% Convertible Senior Notes due 2032. the 5.0% Convertible Exchange Notes due 2032, the 8.0% Second Lien Senior Secured Notes due 2018 and the 8.875% Second Lien Senior Secured Notes due 2018. On October 12, 2016, the obligations of the Company with respect to the all the notes listed above were canceled and the holders receive common stock of the reorganized company pursuant to the Plan of Reorganization. See Note 6. New Accounting Pronouncements On March 30, 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. The amendments in this ASU are intended to improve the accounting for employee share-based payments and affect all organizations that issue share-based payment awards to their employees. Several aspects of the accounting for share-based payment award transactions are simplified, including: (a) income tax consequences; (b) classification of awards as either equity or liabilities; and (c) classification on the statement of cash flows. For public entities, the amendments are effective for annual periods beginning after December 15, 2016. Our adoption of this ASU will be effective in January 2017. We do not anticipate an impact on our financial statements until the fourth quarter of 2017, as that is when the initial vestings of restricted stock issued under our Management Incentive Plan occur. On February 25, 2016 the FASB issued ASU 2016-02, Leases (Topic 842). The key difference between the existing standards and ASU 2016-02 is the requirement for lessees to recognize on their balance sheet all lease contracts with lease terms greater than 12 months, including operating leases. Specifically, lessees are required to recognize on the balance sheet at lease commencement, both: (i) a right-of-use asset, representing the lessee’s right to use the leased asset over the term of the lease; and, (ii) a lease liability, representing the lessee’s contractual obligation to make lease payments over the term of the lease. For lessees, ASU 2016-02 requires classification of leases as either operating or finance leases, which are similar to the current operating and capital lease classifications. However, the distinction between these two classifications under the ASU does not relate to balance sheet treatment, but relates to treatment and recognition in the statements of income and cash flows. Lessor accounting is largely unchanged from current US GAAP. The amendments are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, for public entities. Early application is permitted. We are currently evaluating the provisions of this ASU and assessing the impact it may have on our consolidated financial statements. In November 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update (“ASU”) 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes, which seeks to simplify the presentation of deferred income taxes. The amendments in this update require that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position. For public business entities, the amendments in this update are effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Earlier application is permitted as of the beginning of an interim or annual reporting period. The amendments in this update may be applied either prospectively to all deferred tax liabilities and assets or retrospectively to all periods presented. We adopted this standard in 2016 with no material impact on our financial statements. Prior period presentations have been adjusted to conform to the application of the standard. In April 2015, the FASB issued ASU 2015-03, Interest-Imputation of Interest, which seeks to simplify presentation of debt issuance costs. The ASU requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this ASU. Entities should apply the amendments in this ASU on a retrospective basis, wherein the balance sheet of each individual period presented should be adjusted to reflect the period-specific effects of applying the new guidance. For public entities, this ASU is effective for annual reporting periods beginning after December 15, 2015, including interim periods within that reporting period. We adopted the provisions of this ASU in 2016. As a result, we reclassified prior year amounts within our Consolidated Balance Sheets to conform to the current year presentation. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers . ASU 2014-09 will supersede most of the existing revenue recognition requirements in GAAP and will require entities to recognize revenue at an amount that reflects the consideration to which it expects to be entitled in exchange for transferring goods or services to a customer. The new standard also requires disclosures that are sufficient to enable users to understand an entity’s nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. In March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) . This update provides clarifications in the assessment of principal versus agent considerations in the new revenue standard. In May 2016, the FASB issued ASU 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow Scope Improvements and Practical Expedients. The update reduces the potential for diversity in practice at initial application of Topic 606 and the cost and complexity of applying Topic 606. In May 2016, the FASB issued ASU 2016-11, Revenue Recognition and Derivatives and Hedging: Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting. This update rescinds certain SEC Staff Observer comments that are codified in Topic 605, Revenue Recognition, and Topic 932, Extractive Activities-Oil and Gas, effective upon adoption of Topic 606. These ASUs are effective for annual and interim periods beginning after December 15, 2017. We are assessing the impact that the adoption of these standards will have on our consolidated financial statements.

Fresh Start Accounting (Notes)

Fresh Start Accounting (Notes)	12 Months Ended
	Dec. 31, 2016
Reorganizations [Abstract]
Fresh Start Accounting	Fresh Start Accounting Our Plan of Reorganization was approved by the Bankruptcy Court on September 28, 2016. Subsequently, we emerged from Chapter 11 bankruptcy on October 12, 2016. Upon our bankruptcy emergence, we were subject to the requirements of FASB ASC 852, "Reorganizations". This included evaluating our ability to adopt "Fresh Start Accounting" and determining the reorganization value of our post-emergence company. Additional information pertaining to our Plan of Reorganization and bankruptcy emergence is contained in Note 1 to these Consolidated Financial Statements. We qualified for the adoption of Fresh-Start Accounting because (1) the holders of existing voting shares of the pre-emergence debtor-in-possession, referred to herein as the "Predecessor" or "Predecessor Company" received less than 50% of the voting shares of the post-emergence successor entity, referred to herein as the "Successor" or "Successor Company", that were outstanding after our bankruptcy emergence and (2) immediately prior to the approval of our reorganization plan, the reorganization value of the "Predecessor"Company's assets was less than the allowed claims and post-petition liabilities. Our adoption of fresh start reporting resulted in our becoming a new reporting entity for financial reporting purposes, with no beginning retained earnings or deficit. On October 13, 2016, we began to apply fresh start accounting as a new entity. Our post emergence financial statements are therefore presented on this basis. Upon our application of fresh start accounting, we allocated our reorganization value to our individual assets based on their estimated fair values. Reorganization value represents the fair value of the Successor Company's assets before considering liabilities. Application of fresh start accounting and the effects of the implementation of our Plan of Reorganization resulted in our Consolidated Financial Statements on or after October 12, 2016 not being comparable with the Consolidated Financial Statements prior to that date. All references made regarding "Successor" or "Successor Company" relate to the financial position and results of operations of our reorganized entity subsequent to October 12, 2016. References to "Predecessor" or "Predecessor Company" refer to the financial position and results of operations of our entity prior to October 12, 2016. Reorganization Value Reorganization value was determined at our emergence date of October 12, 2016. It represents the fair value of the Successor Company's total assets and is intended to approximate the amount a willing buyer would pay for assets immediately after restructuring. We estimated the Successor Company asset value to be approximately $115 million inclusive of the $20 million net cash effect of the proceeds from the 2nd Lien Note. The valuation analysis was prepared with standard valuation techniques, which included a development plan, pricing models and discounting methods, and various other analytics. Information pertaining to reserves, inventory, fixed assets and other financial projections and information were used in the valuation analysis. Proved Reserves The Company determined the fair value of its proved producing oil and gas properties based upon the discounted cash flows expected to be generated from the properties. The valuation used New York Mercantile Exchange ("NYMEX ") WTI pricing for oil and Henry Hub pricing for natural gas. The after tax cash flows were discounted at 10.2% . This discount factor was derived from a weighted average cost of capital computation which utilized a blended expected cost of debt and expected returns on equity for similar industry participants. The cash flows were not risked since the properties consisted only proved producing properties. Undeveloped Acreage The Company owns undeveloped lease acreage in three major shale trends. The acreage is valued on a per acre basis reflecting recent acreage transactions within each trend. Materials Inventory The Company maintains an inventory of mostly tubular which is valued by market quote. Asset Retirement Obligation The Company has asset retirement obligations to plug and abandon wells at the end of their life. The company determines the Fair value of the obligation from quotes obtained from vendors for plug and abandonment cost which is escalated using 2.4% inflation factor and discounted using a credit adjusted risk free rate of 7.5% . The fair value is initially recorded as an asset and liability. Tangible Personal and Real Property The company owns furniture, fixtures, computer equipment, software and fee land which is valued using the direct cost approach. Current Assets The company valued the current assets at book value due to their short term nature and includes the net cash effect of the 2nd Lien Note proceeds. The following table reconciles the estimated fair value of the Successors Company assets at October 12, 2016 (in thousands): October 12, 2016 Current assets $ 28,216 Oil & gas properties Proved Reserves 37,200 Undeveloped acreage 41,570 Asset Retirement Obligation 2,896 Materials inventory 4,125 Tangible personal & real property 984 Goodwill 9 Total asset value $ 115,000 Balance sheet reclass (current assets) 18,201 Total successor assets $ 96,799 Consolidated Balance Sheet The information and adjustments set forth in the following consolidated balance sheet reflect our recent financial progression, beginning with that of our pre-emergence (Predecessor Company) and concluding with our current entity position (Successor Company). The completion of transactions as provided in our Plan of Reorganization are presented as "Reorganization Adjustments" and the fair value adjustments which resulted from our application of Fresh Start Accounting are specified as being "Fresh Start Adjustments." The explanatory notes emphasize methods used to determine fair values or other amounts of the assets and liabilities as well as significant assumptions. The following table reflects the reorganization and application of ASC 852 on our consolidated Balance Sheet as of October 12, 2016 (in thousands): Predecessor Company Reorganization Adjustments Fresh Start Adjustments Successor Company October 13, 2016 ASSETS Current assets: Cash and cash equivalents $ 3,680 $ — $ — $ 3,680 Accounts receivable, trade and other, net of allowance 590 — — 590 Accrued oil and gas revenue 4,207 — — 4,207 Inventory 4,178 — — 4,178 Prepaid expenses and other 1,161 — — 1,161 Total current assets 13,816 — — 13,816 Property and equipment Unevaluated oil & gas properties (Full Cost Method) — — 41,570 (5) 41,570 Evaluated oil & gas properties (Full Cost Method) — — 40,104 (5) 40,104 Oil and gas properties (successful efforts method) 976,021 — (976,021 ) (5) — Furniture, fixtures and equipment 7,302 — (6,318 ) (5) 984 983,323 — (900,665 ) 82,658 Less: Accumulated depletion, depreciation and amortization (919,121 ) 919,121 (5) — Net property and equipment 64,202 — 18,456 82,658 Other 325 — — 325 325 — — 325 Total Assets 78,343 $ — $ 18,456 96,799 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable 12,761 — — 12,761 Accrued liabilities 10,368 — — 10,368 Accrued abandonment costs 83 — (83 ) (6) — Current portion of debt 40,393 — — 40,393 Total current liabilities 63,605 — (83 ) 63,522 Long-term debt — — — — Accrued abandonment cost 3,861 — (965 ) (6) 2,896 Liabilities subject to compromise 426,249 (426,249 ) (1) — — Total liabilities 493,715 (426,249 ) (1,048 ) 66,418 Stockholders' equity: Preferred stock, Series E 3 (3 ) (2) — — Preferred stock, Series D 4 (4 ) (2) — — Preferred stock, Series C 3 (3 ) (2) — — Preferred stock, Series B 1,483 (1,483 ) (2) — — Common stock (Predecessor) 15,995 (15,995 ) (2) — — Common stock (Successor) — 68 (3) — 68 Treasury Stock (46 ) 46 (2) — — Additional paid in capital (Predeccessor) 1,100,504 (1,100,504 ) (2) — — Additional paid in capital (Successor) 30,313 (3) — 30,313 Retained earnings (Accumulated deficit) (1,533,318 ) 1,513,814 (4) 19,504 (7) — Accumulated other comprehensive loss — — — — Unamortized restricted stock awards — — — — Total stockholders' equity (deficit) (415,372 ) 426,249 19,504 30,381 Total Liabilities and Stockholders' Equity 78,343 — 18,456 96,799 1. Liabilities subject to compromise were settled as follows in accordance with the Plan of Reorganization (in thousands): 8.0% Second Lien Senior Secured Notes due 2018 $ 100,000 8.875% Second Lien Senior Secured Notes due 2018 75,000 8.875% Senior Notes due 2019 116,828 3.25% Convertible Senior Notes due 2026 429 5.0% Convertible Senior Notes due 2029 6,692 5.0% Convertible Senior Notes due 2032 99,238 5.0% Convertible Exchange Senior Notes due 2032 6,305 Accrued interest 17,161 Accounts payable and accrued liabilities 4,596 Liabilities Subject to compromise at October 12, 2016 426,249 Fair value of equity in Successor Company 30,381 Gain on settlement of Liabilities subject to compromise $ 395,868 2. Reflects the cancellation of the Predecessor Company Preferred and Common Stock and associated Additional Paid in Capital. 3. Reflects the issuance of 5.8 million shares of common stock to the Second Lien Noteholders, 0.1 million shares of common stock to the unsecured debt holders, and an issued 1.0 million common shares under the Management Incentive Plan. Additionally, the unsecured debt holders were issued warrants to purchase 1.3 million shares of common stock valued at $2.5 million . 4. Reflects the cumulative impact of the reorganization adjustments discussed above (in thousands): Gain on settlement of Liabilities subject to compromise $ 395,868 Cancellation of Predecessor Company equity (1,513,814 ) Net impact to accumulated deficit $ (1,117,946 ) 5. The following table summarizes the fair value adjustment on our oil and gas properties and accumulated depletion, depreciation and amortization (in thousands): Predecessor Fresh Start Adjustments Successor Company October 13, 2016 Oil and Gas Properties Oil & gas properties (successful efforts method) $ 868,703 $ (868,703 ) $ — Unproved properties (successful efforts method) 107,318 (107,318 ) — Proved properties (Full Cost Method) — 40,104 40,104 Unproved properties ( Full Cost Method) — 41,570 41,570 Total Oil and Gas Properties 976,021 (894,347 ) 81,674 Less: Accumulated depletion and impairments (912,252 ) 912,252 — Net Oil and Gas Properties 63,769 17,905 81,674 Furniture, Fixtures and other equipment 7,302 (6,318 ) 984 Less: Accumulated depreciation (6,869 ) 6,869 — Net Furniture, Fixtures and other equipment 433 551 984 Net Oil and Gas Properties, Furniture, and fixtures and accumulated depreciation $ 64,202 $ 18,456 $ 82,658 6. Reflects the adjustment of Asset Retirement Obligation to fair value at the effective date. 7. Reorganization Items represent items directly related to the Chapter 11 bankruptcy filing and implementation of the Plan of Reorganization and are classified as Gain on reorganization, net in the Consolidated Statement of Operations. The following table summarizes the reorganization items (in thousands): Successor Predecessor Period from October 13, 2016 through Period from January 1, 2016 through Gain on settlement of liabilities subject to compromise $ — $ (395,868 ) Gain on Fresh start adjustments — (19,504 ) Professional fees and adjustments to debt (130 ) 15,950 Gain on Reorganization items, net $ (130 ) $ (399,422 )

Share-Based Compensation Plans

Share-Based Compensation Plans	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation Plans	Share-Based Compensation Plans Overview We emerged from Chapter 11 on October 12, 2016, at which time we also canceled our 2006 Long Term Incentive Plan, as amended in 2015. The 2006 Long Term Incentive Plan provided for grants to officers, employees and non-employee directors of compensation in the form of restricted stock and options. Upon cancellation of the 2006 Long Term Incentive Plan, no awarded options were outstanding, while 2.2 million non-vested restricted stock awards remained outstanding with a related $2.8 million in unamortized expense. All outstanding awards were canceled with the unamortized expense recorded to Gain on reorganization items, net on the Predecessor period Consolidated Statements of Operations. We measure the cost of stock based compensation based on the fair value of the award as of the grant date, net of estimated forfeitures. Awards granted are valued at fair value and recognized on a straight-line basis over the service periods (or the vesting periods) of each award. We estimate forfeiture rates for all unvested awards based on our historical experience. Management Incentive Plan (Successor Company) The Confirmation Order related to our Chapter 11 Reorganization Plan approved a Management Incentive Plan (the "MIP") which provides for awards of restricted stock, option, performance awards, phantom shares and stock appreciation rights to directors, officers, employees, and consultants. The MIP initially provided for the issuance of 1.0 million shares of common stock, all of which were granted on October 12, 2016 pursuant to the Plan of Reorganization. In December 2016, an additional 0.9 million shares, with a grant date fair value of $12.00 , were awarded and will vest over a service period of up to 3 years except for grants to Directors which vest over 12 months . The Management Incentive Plan is intended to promote the interests of the Company by providing a means by which employees, consultants and directors may acquire or increase their equity interest in the Company and may develop a sense of proprietorship and personal involvement in the development and financial success of the Company, and to encourage them to remain with and devote their best efforts to the business of the Company, thereby advancing the interests of the Company and its stockholders. The Management Incentive Plan is also intended to enhance the ability of the Company and its Subsidiary to attract and retain the services of individuals who are essential for the growth and profitability of the Company. The Management Incentive Plan provides that the Compensation Committee shall have the authority to determine the participants to whom stock options, restricted stock, performance awards, phantom shares and stock appreciation rights may be granted. The following tables summarizes the pretax components of our share-based compensation programs recorded, recognized as a component of general and administrative expenses in the Consolidated Statements of Operations (in thousands): Management Incentive Plan Year Ended December 31, 2016 2015 Restricted stock expense $ 187 $ — Stock option expense — — Director stock expense 53 — Total share-based compensation: $ 240 $ — Restricted stock awarded under the MIP Plan typically have a vesting period of one to three years. During the vesting period, ownership of restricted stock shares subject to the vesting period cannot be transferred and the shares are subject to forfeiture if employment ends before the end of the vesting period. Certain restricted stock awards provide for accelerated vesting. Restricted shares are not considered to be currently issued and outstanding until the restrictions lapse and/or they vest. Management Incentive Plan Number of Value of Fair Value of (thousands) (thousands) 2016 1,859,570 $ 14,365 $ 2,944 Restricted stock activity and changes under our new Management Incentive Plan for the period October 12, 2016 to December 31, 2016 , are reflected in the tables below: Management Incentive Plan Number of Weighted Total Value (thousands) Unvested at October 12, 2016 — — — Granted 1,859,570 $ 7.72 $ 14.365 Vested (726,904 ) 4.05 2.944 Forfeited — — — Unvested at December 31, 2016 1,132,666 $ 10.08 $ 11.421 As of December 31, 2016 , total unrecognized compensation cost related to restricted stock is as follows: Management Incentive Plan Unrecognized Weighted (thousands) (years) December 31, 2016 $ 11,181 2.77 2006 Long Term Incentive Plan (Predecessor Company) Upon our emergence from Chapter 11 on October 12, 2016, the 2006 Long Term Incentive Plan was canceled. The following tables summarizes the pretax components of our share-based compensation programs recorded, recognized as a component of general and administrative expenses in the Consolidated Statements of Operations (in thousands): 2006 Long-Term Incentive Plan Period from January 1, 2016 through October 12, 2016 For the Year Ended December 31, 2015 Restricted stock expense $ 3,307 $ 6,689 Stock option expense — — Director stock expense — 754 Total share-based compensation: $ 3,307 $ 7,443 Stock Options As discussed above, our 2006 Long Term Incentive Plan was canceled upon our bankruptcy emergence on October 12, 2016. The 2006 Long Term Incentive Plan provided that the option price of shares issued be equal to the market price on the date of grant. With the exception of option grants to non-employee directors, which vested immediately, options vested ratably on the anniversary of the date of grant over a period of time, typically three years. Our stock options expired in seven or ten years after the date of grant. Option activity under our stock option plan as of October 12, 2016 and changes during the year through October 12, 2016 were as follows: Shares Weighted Average Exercise Price Remaining Contractual Term Aggregate Intrinsic Value (years) (thousands) Outstanding at January 1, 2016 60,000 $ 27.81 0.36 $ — Granted — — — — Exercised — — — — Forfeited (60,000 ) — — — Outstanding at October 12, 2016 — $ — — $ — Exercisable at October 12, 2016 — $ — — $ — The outstanding options had no intrinsic value as of December 31, 2015. As of December 31, 2015, all compensation cost related to the stock options had been recognized in earnings. No stock options were granted in 2016 and as of October 12, 2016, there were no options outstanding due to the cancellation of the 2006 Long Term Incentive Plan. Restricted Stock Restricted stock awarded under the 2006 Long term Incentive Plan typically had a vesting period of three years. As discussed, all restricted stock awarded under the 2006 Long Term Incentive Plan was canceled. During the vesting period, ownership of restricted stock shares subject to the vesting period could not be transferred and the shares were subject to forfeiture if employment ended before the end of the vesting period. Certain restricted stock awards provide for accelerated vesting. Restricted shares are not considered to be currently issued and outstanding until the restrictions lapse and/or they vest. Restricted stock activity and values under our plan for the period January 1, 2016 through October 12, 2016 and for the year ended December 31, 2015 were as follows: 2006 Long Term Incentive Plan Number of Value of Fair Value of (thousands) (thousands) 2016 126,891 $ 15 $ 24 2015 2,679,580 $ 2,525 $ 394 Upon our emergence from Chapter 11 on October 12, 2016, the 2006 Long Term Incentive Plan was canceled. Restricted stock activity and changes under the prior 2006 Long Term Incentive Plan as of for the period January 1, 2016 to October 12, 2016, are reflected in the tables below: 2006 Long Term Incentive Plan Number of Weighted Total Value (thousands) Unvested at January 1, 2016 3,136.851 $ 2.25 $ 7,066 Granted 126.891 0.12 15 Vested (924.816 ) 0.83 (768 ) Forfeited (160.507 ) 21.84 (3,505 ) Canceled at October 12, 2016 2,178.419 $ 1.29 $ 2,808

Asset Retirement Obligations

Asset Retirement Obligations	12 Months Ended
	Dec. 31, 2016
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations	Asset Retirement Obligations The reconciliation of the beginning and ending asset retirement obligation for the periods ending December 31, 2016 and 2015 is as follows (in thousands): Successor Predecessor Predecessor October 13, 2016 January 1, 2016 Year ended December 31, 2015 Beginning balance $ 2,897 $ 3,728 $ 6,510 Liabilities incurred — — 15 Revisions in estimated liabilities — — — Liabilities settled — — (62 ) Accretion expense 36 216 434 Dispositions (1) — — (3,169 ) Ending balance $ 2,933 $ 3,944 $ 3,728 Current liability $ — $ 83 $ 83 Long term liability $ 2,933 $ 3,861 $ 3,645 (1) The majority of the 2015 dispositions represent the divestiture of our producing Eagle Ford Shale Trend properties.

Debt

Debt	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Debt	Debt Debt consisted of the following balances as of the dates indicated (in thousands): Successor Predecessor December 31, 2016 December 31, 2015 Principal Carrying Fair Principal Carrying Fair Exit Credit Facility (7) $ 16,651 $ 16,651 $ 16,651 $ — $ — $ — 13.50% Convertible Second Lien Term Loan (8) 41,170 30,554 29,036 — — — Senior Credit Facility — — — 27,000 25,387 27,000 8.0% Second Lien Senior Secured Notes due 2018 (2) (6) — — — 100,000 87,529 14,512 8.875% Second Lien Senior Secured Notes due 2018 (6) — — — 75,000 91,364 7,586 8.875% Senior Notes due 2019 (6) — — — 116,828 115,599 9,346 3.25% Convertible Senior Notes due 2026 (6) — — — 429 429 64 5.0% Convertible Senior Notes due 2029 (3) (6) — — — 6,692 6,692 67 5.0% Convertible Senior Notes due 2032 (4) (6) — — — 98,664 95,882 6,923 5.0% Convertible Exchange Senior Notes due 2032 (6) — — — 26,849 42,625 26,649 Total debt $ 57,821 $ 47,205 $ 45,687 $ 451,462 $ 465,507 $ 92,147 (1) The carrying amount for the Senior Credit Facility represents fair value as it was fully secured. The fair values of the notes were obtained by direct market quotes within Level 1 of the fair value hierarchy. The fair value of our Second Lien Notes and 2032 Exchange Notes were obtained using a discounted cash flow model within Level 3 of the fair value hierarchy. Level 1 and Level 3 of the fair value hierarchy are defined in this Item 8. (2) The debt discount was being amortized using the effective interest rate method based upon a two and a half year term through September 1, 2017, the first repurchase date applicable to the 8.0% Second Lien Notes. The $13.1 debt discount that existed when the Bankruptcy Petitions were filed on the Petition Date was written off to Reorganization items, net during the second quarter of 2016. The debt discount as of December 31, 2015 was $11.0 million . (3) The debt discount was amortized using the effective interest rate method based upon an original five year term through October 1, 2014. The debt discount was fully amortized as of December 31, 2014. (4) The debt discount was being amortized using the effective interest rate method based upon a four year term through October 1, 2017, the first repurchase date applicable to the 2032 Notes. The $1.7 million debt discount that existed when the Bankruptcy Petitions were filed on April 15, 2016 was written off to Reorganization items, net during the second quarter of 2016. The debt discount was $2.0 million as of December 31, 2015. (5) The carrying amount of debt is net of deferred loan costs of $5.1 million as of December 31, 2015. Deferred financing costs were amortized using the straight-line method through the contractual maturity dates for the Senior Credit Facility and the 2019 Notes, through the first put date of September 1, 2017 for the 8.0% Second Lien Notes and through the first put date of October 1, 2017 for the 2032 Notes. The $3.0 million of deferred loan costs for the 2019 Notes, 8.0% Second Lien Notes and 2032 Notes that existed when the Bankruptcy Petitions were filed on the Petition date was written off to Reorganization items, net during the second quarter of 2016. (6) Classified as Liability subject to compromise as of October 12, 2016. (7) The carrying amount for the Exit Credit Facility represents fair value as it was fully secured. (8) The debt discount is being amortized using the effective interest rate method based upon a maturity date of August 30, 2019. The principal includes $1.2 million of Paid-In-Kind interest. The carrying value includes $10.6 million of unamortized debt discount.The fair value of the notes was obtained by using a Binomial Lattice Model within Level 3 of the fair value hierarchy. The following table summarizes the total interest expense for the periods shown including contractual interest expense, amortization of debt discount, accretion and financing costs and the effective interest rate on the liability component of the debt (amounts in thousands, except effective interest rates). Period from October 13, 2016 through December 31, 2016 Period from January 1, 2016 through October 12, 2016 For the Year Ended December 31, 2015 Interest Effective Interest Effective Interest Effective Senior Credit Facility $ — — $ 3,342 — $ 4,308 5.1 % Exit Credit Facility 306 7.3 % — — — — % 13.50% Convertible Second Lien Notes 1,518 24.7 % — — — — % 8.0% Second Lien Senior Secured Notes due 2018 — — 936 * 11,515 16.4 % 8.875% Second Lien Senior Secured Notes due 2018 — — — — 2,333 * 8.875% Senior Notes due 2019 — — 3,107 * 21,668 9.2 % 3.25% Convertible Senior Notes due 2026 — — 4 * 13 3.3 % 5.0% Convertible Senior Notes due 2029 — — 97 * 335 5.0 % 5.0% Convertible Senior Notes due 2032 — — 2,382 * 12,495 8.6 % 5.0% Convertible Exchange Senior Notes due 2032 — — 1,484 * 2,088 * Other — — 46 * 52 * Total $ 1,824 $ 11,398 $ 54,807 * - Not meaningful The Chapter 11 Cases constituted an event of default that accelerated the Company’s obligations under all of its outstanding debt instruments. The agreements governing the Company’s debt instruments provided that as a result of the Bankruptcy Petitions, the principal and interest due thereunder was immediately due and payable. However, any efforts to enforce such payment obligations under the Company’s debt instruments were automatically stayed as a result of the Chapter 11 Cases, and the creditors’ rights of enforcement in respect of the debt instruments were subject to the applicable provisions of the Bankruptcy Code and orders of the Bankruptcy Court. On October 12, 2016, upon the Company’s emergence from bankruptcy, the Second Lien Notes were exchanged for 98% of the common stock of the reorganized Company and the unsecured senior notes along with certain other unsecured claims were exchanged for 2% of the common stock of the reorganized company. The $40.4 million amount outstanding amounts under the Senior Credit Facility was paid down to $20.0 million with proceeds from the sale of the Convertible Second Lien Notes and cash on hand at closing. Senior Credit Facility As of October 12, 2016, we had $40.4 million outstanding under the Senior Credit Facility inclusive of the accrued default penalty. Following the reduction of the borrowing base to $20.0 million after the April 1, 2016 borrowing base redetermination, the Company had a borrowing base deficiency of $20.2 million . Pursuant to the terms of a cash collateral order entered in the bankruptcy proceeding on the Petition Date, interest was accrued and paid monthly based on a 2.25% margin which calculated to 5.75% per annum. Additionally, a post-default rate of 2.00% is accreted on the outstanding balance. Substantially all of our assets were pledged as collateral to secure the Senior Credit Facility. The Senior Credit Facility had a maturity date of February 24, 2017. The commencement of the Chapter 11 Cases on the Petition Date constituted an event of default that accelerated the Company’s obligations under the Senior Credit Facility. Additionally, other events of default existed which included, but were not limited to, the presence of an explanatory paragraph regarding the substantial doubt about our ability to continue as a going concern in the report of our independent registered public accounting firm that accompanied our audited consolidated financial statements for the year ended December 31, 2015. We were also not in compliance with the certain financial covenants under the terms of the Senior Credit Facility as of the 2016 quarter ends and at December 31, 2015. On October 12, 2016, in connection with the consummation of the Plan of Reorganization, the Senior Credit Facility was terminated. Exit Credit Facility On October 12, 2016, upon consummation of the Plan of Reorganization, the Company entered into an Exit Credit Agreement (the “Exit Credit Agreement”) with the Subsidiary, as borrower (the “Borrower”), and Wells Fargo Bank, National Association, as administrative agent (“the Administrative Agent”), and certain other lenders party thereto. Pursuant to the Exit Credit Agreement, the lenders party thereto provided the Borrower with a $20.0 million senior secured term loan credit facility, with an outstanding principal amount of $20.0 million . The maturity date of the Exit Credit Agreement is September 30, 2018, unless the Borrower notifies the Administrative Agent that it intends to extend the maturity date to September 30, 2019, subject to certain conditions and the payment of a fee. Until such maturity date, the Loans (as defined in the Exit Credit Agreement) under the Exit Credit Agreement shall bear interest at a rate per annum equal to (i) the alternative base rate plus an applicable margin of 4.50% or (ii) adjusted LIBOR plus an applicable margin of 5.50% . As of December 31, 2016, the interest rate on the Exit Credit Facility was 6.39% . The Borrower may elect, at its option, to prepay any borrowing outstanding under the Exit Credit Agreement without premium or penalty (except with respect to any break funding payments which may be payable pursuant to the terms of the Exit Credit Agreement). The Borrower may be required to make mandatory prepayments of the Loans under the Exit Credit Agreement if the total borrowings exceed the aggregate credit amounts, and if the Borrower is not in compliance with the Total Proved Asset Coverage Ratio (as defined in the Exit Credit Agreement) or the Secured Debt Asset Coverage Ratio (as defined in the Exit Credit Agreement). Additionally, if the Borrower has outstanding borrowings and the Consolidated Cash Balance (as defined in the Exit Credit Agreement and First Amendment and Consent to Exit Credit Agreement dated December 2016) exceeds (i) the sum of $27.5 million plus $21.3 million , which is calculated as the Equity Issuance Net Proceeds from the December 19, 2016 private placement of less $2.5 million , as the as of the close of business on the most recently ended business day on or before March 31, 2018 or (ii) $7.5 million as of the close of business on the most recently ended business day on or after April 1, 2018, the Borrower may also be required to make mandatory prepayments in an aggregate principal amount equal to such excess. Furthermore, the Borrower is required to make certain mandatory prepayments within one business day of (i) the issuance of any Equity Interests (as defined in the Exit Credit Agreement) of the Company, (ii) the consummation of any sale or other disposition of Property (as defined in the Exit Credit Agreement) and (iii) the assignment, termination or unwinding of any Swap Agreements (as defined in the Exit Credit Agreement). Amounts outstanding under the Exit Credit Agreement are guaranteed by the Company and secured by a security interest in substantially all of the assets of the Company and the Borrower. The Exit Credit Agreement contains certain customary representations and warranties, including organization; powers; authority; enforceability; approvals; no conflicts; financial condition; no material adverse change; litigation; environmental matters; compliance with laws and agreements; no defaults; Investment Company Act; taxes; ERISA; disclosure; no material misstatements; insurance; restrictions on liens; subsidiaries; location of business and offices; properties; titles, etc.; maintenance of properties; gas imbalances, prepayments; marketing of production; swap agreements; use of loans; solvency; sanctions laws and regulations; foreign corrupt practices; money laundering laws; and embargoed persons. The Exit Credit Agreement also contains certain affirmative and negative covenants, including delivery of financial statements; conduct of business; reserve reports; title information; collateral and guarantee requirements; indebtedness; liens; dividends and distributions; investments; sale or discount of receivables; mergers; sale of properties; termination of swap agreements; transactions with affiliates; negative pledges; dividend restrictions; gas imbalances; take-or-pay or other prepayments; and swap agreements. The Exit Credit Agreement also contains certain financial covenants, including the maintenance of (i) a Total Proved Asset Coverage Ratio (as defined in the Exit Credit Agreement) not to be less than 1.5 to 1.0 initially, and increasing to 2.0 to 1.0 on or after December 31, 2018, (ii) Secured Debt Asset Coverage Ratio (as defined in the Exit Credit Agreement) not to be less than 1.10 to 1.00 initially, and increasing to 1.35 to 1.00 after March 31, 2017 but before September 30, 2017 and 1.50 to 1.00 after September 30, 2017, in the case of clauses (i) and (ii), to be determined as of January 1 and July 1 each year and as of the date of any Material Acquisition (as defined in the Exit Credit Agreement) or Material Disposition (as defined in the Exit Credit Agreement), (iii) commencing with the fiscal quarter ending March 31, 2018, a ratio of Debt (as defined in the Exit Credit Agreement) as of the end of each fiscal quarter to EBITDAX for the twelve months ending on the last day of such fiscal quarter, not to exceed 4.00 to 1.00, (iv) limitations on Consolidated Cash Balance, (v) limitations on general and administrative expenses and (vi) minimum liquidity requirements. The Exit Credit Agreement also contains certain events of default, including non-payment; breaches of representations and warranties; non-compliance with covenants or other agreements; cross-default to material indebtedness; voluntary and involuntary bankruptcy; judgments; and change of control. As of December 31, 2016, we were in compliance with all covenants within the Exit Credit Agreement. 13.50% Convertible Second Lien Senior Secured Notes Due 2019 On October 12, 2016, the Company and the Subsidiary, entered into a purchase agreement (the “Purchase Agreement”) with each entity identified as a Shenkman Purchaser on Appendix A to the Purchase Agreement (collectively, the “Shenkman Purchasers”), CVC Capital Partners (acting through such of its affiliates to managed funds as it deems appropriate), J.P. Morgan Securities LLC (acting through such of its affiliates or managed funds as it deems appropriate), Franklin Advisers, Inc. (as investment manager on behalf of certain funds and accounts), O’Connor Global Multi-Strategy Alpha Master Limited and Nineteen 77 Global Multi-Strategy Alpha (Levered) Master Limited (collectively, and together with each of their successors and assigns, the “Purchasers”), in connection with the issuance of $40.0 million aggregate principal amount of the Company’s Convertible Second Lien Notes. The aggregate principal amount of the Convertible Second Lien Notes is convertible at the option of the Purchasers at any time prior to the scheduled maturity date into an amount of the Company’s common stock equal to 15% of the New Common Stock of the reorganized Company on a fully diluted basis. The Purchasers were also issued 10 -year costless warrants for common stock equal to 20% of the common stock of the reorganized Company on a fully diluted basis, received a second priority lien on all assets of the Debtors, and have the right to appoint two members to the Board. For additional information regarding the option to covert and the issuance of the ten year costless warrants, see Note 9. The Convertible Second Lien Notes will mature on August 30, 2019, or such later date as set forth in the Convertible Second Lien Notes, but in no event later than March 30, 2020. The Convertible Second Lien Notes bear interest at the rate of 13.50% per annum, payable quarterly in arrears on January 15, April 15, July 15 and October 15 of each year. The Company may elect to pay all or any portion of interest in kind on the then outstanding principal amount of the Convertible Second Lien Notes by increasing the principal amount of the outstanding Convertible Second Lien Notes or by issuing additional Second Lien Notes (“PIK Interest Notes”). The PIK Interest Notes are not convertible. During such time as the Exit Credit Agreement (but not any refinancing or replacement thereof) is in effect, interest on the Convertible Second Lien Notes must be paid in-kind. The Indenture governing the Second Lien Notes contains certain covenants pertaining to us and our subsidiary, including delivery of financial reports; environmental matters; conduct of business; use of proceeds; operation and maintenance of properties; collateral and guarantee requirements; indebtedness; liens; dividends and distributions; limits on sale of assets and stock; business activities; transactions with affiliates; and changes of control. The Indenture also contains certain financial covenants, including the maintenance of (i) a Total Proved Asset Coverage Ratio (as defined in the Exit Credit Agreement) not to be less than 1.10 to 1.00 on or before March 31, 2017 initially and increasing to 1.35 to 1.00 after March 31, 2017 but on or before September 30, 2017 and 1.50 to 1.00 after September 30, 2017, to be determined as of January 1 and July 1 of each year; (ii) limitations on general and administrative expenses and (iii) minimum liquidity requirements. As of December 31, 2016, we were in compliance with all covenants within the Indenture that governs the Second Lien Notes. 8.0% Second Lien Senior Secured Notes due 2018 On March 12, 2015, we sold 100,000 units (the “Units”), each consisting of a $1,000 aggregate principal amount at maturity of our 8.0% Second Lien Notes and one warrant to purchase 48.84 shares of our $0.20 par value common stock. The 8.0% Second Lien Notes are guaranteed by our subsidiary that also guarantees our Senior Credit Facility. The 8.0% Second Lien Notes are secured on a senior second-priority basis by liens on certain assets of the Company and its subsidiary that secures our Senior Credit Facility, which liens are subject to an inter-creditor agreement in favor of the lenders under the Senior Credit Facility. The 8.0% Second Lien Notes were to mature on March 15, 2018 or on September 1, 2017, if certain conditions were not met. Interest on the 8.0% Second Lien Notes was payable semi-annually in arrears on March 15 and September 15 of each year, beginning on September 15, 2015. The 8.0% Second Lien Notes and the warrants became separately transferable on June 4, 2015 when a registration statement related to the resale of the warrants was declared effective by the SEC. The warrants were exercisable upon payment of the exercise price of $4.664 or convertible on a cashless basis as set forth in the agreement governing the warrants. We separately accounted for the liability and equity components of our 8.0% Second Lien Notes in a manner that reflected our nonconvertible debt borrowing rate when interest is recognized in subsequent periods. We measured the debt component of the 8.0% Second Lien Notes using a discount rate of 32% on the date of issuance. We attributed $78.7 million of the 8.0% Second Lien Notes relative fair value to the debt component, which compared to the face value results in a debt discount of $21.3 million . Additionally, we recorded $15.8 million within additional paid-in capital representing the equity component of the 8.0% Second Lien Notes. The debt discount has been amortized using the effective interest rate method. The $13.1 million unamortized debt discount that remained when the Bankruptcy Petitions were filed on the Petition Date was written off to Reorganization items, net during the second quarter of 2016. We also identified an embedded derivative associated with the 8.0% Second Lien Notes stemming from the length of time between the maturity date of March 15, 2018 and the put date of September 1, 2017. We valued the embedded derivative at $5.9 million using the discounted cash flow method on the date of issuance. The embedded derivative feature was recorded at fair value each reporting period with changes in fair value being reported as interest expense in the consolidated statements of operations. The $0.9 million fair value of the embedded derivative that existed when the Bankruptcy Petitions were filed on April 15, 2016 was reduced to zero during the second quarter of 2016. On October 12, 2016, the obligations of the Company with respect to the 8.0% Second Lien Notes were canceled and the holders receive common stock of the reorganized company pursuant to the Plan of Reorganization. 8.875% Second Lien Senior Secured Notes due 2018 On October 1, 2015, we closed on a privately-negotiated exchange agreement under which we retired, in two tranches, $158.2 million in principal of our 2019 Notes for $75.0 million in principal of 8.875% Second Lien Notes. The first tranche exchanged $81.7 million of 2019 Notes for $36.8 million of 8.875% Second Lien Notes. The second tranche exchanged $76.5 million of 2019 Notes for $38.2 million of 8.875% Second Lien Notes which also included the issuance of 38,250 warrants. Each warrant was entitled to purchase approximately 156.9 shares of our $0.20 par value common stock for $1.00 per share. The 8.875% Second Lien Notes are secured on a senior second-priority basis by liens on certain assets of the Company and its subsidiary that secures our Senior Credit Facility, which liens are subject to an inter-creditor agreement in favor of the lenders under the Senior Credit Facility. The new 8.875% Second Lien Notes had a maturity date of March 15, 2018 or earlier on August 1, 2017 if certain conditions were not met. Interest on the 8.875% Second Lien Notes was payable semi-annually in arrears on March 15 and September 15 of each year, beginning on March 15, 2016. We accounted for this transaction as a troubled debt transaction pursuant to guidance provided by FASB ASC section 470-60 “Troubled Debt Restructurings by Debtors”. We had determined that the prospective undiscounted cash flows from the 8.875% Second Lien Notes through their maturity did not exceed the adjusted carrying amount of the retired 2019 Notes, consequently a gain of $62.6 million was recognized for this exchange in 2015. Accordingly, on the date of the exchange, a carrying amount of $91.4 million was recorded as a liability and we recorded $2.5 million in additional paid in capital representing the fair value of the warrants issued. The carrying amount of the 8.875% Second Lien Notes was adjusted downward from $91.4 million to the $75.0 million principal amount when the Bankruptcy Petitions were filed on the Petition Date, with the $16.4 million gain recognized in Reorganization items, net on the Consolidated Statements of Operations in 2016. On October 12, 2016, the obligations of the Company with respect to the 8.0% Second Lien Notes were canceled and the holders receive common stock of the reorganized company pursuant to the Plan of Reorganization. 8.875% Senior Notes due 2019 On March 2, 2011, we sold $275 million of our 2019 Notes. The 2019 Notes were to mature on March 15, 2019, unless earlier redeemed or repurchased. The 2019 Notes are our senior unsecured obligations and rank equally in right of payment to all of our other existing and future unsecured indebtedness. The 2019 Notes accrued interest at a rate of 8.875% annually, and interest was paid semi-annually in arrears on March 15 and September 15. The 2019 Notes were guaranteed by our subsidiary that also guarantees our Senior Credit Facility. As described above, on October 1, 2015, we closed a privately-negotiated exchange under which we retired, in two tranches, $158.2 million in aggregate original principal amount of our outstanding 2019 Notes in exchange for the issuance of $75.0 million in aggregate original principal amount of our 8.875% Second Lien Notes and 38,250 warrants. Each warrant was entitled to purchase approximately 156.9 shares of our $0.20 par value common stock for $1.00 per share. Following this exchange, approximately $116.8 million aggregate original principal amount of the 2019 Notes remained outstanding. On October 12, 2016, the obligations of the Company with respect to the 2019 Notes were canceled and the holders receive common stock of the reorganized company pursuant to the Plan of Reorganization. 5.0% Convertible Senior Notes due 2029 In September 2009, we sold $218.5 million of our 2029 Notes. The 2029 Notes were to mature on October 1, 2029, unless earlier converted, redeemed or repurchased. We exchanged $166.7 million of the 2029 Notes for the 2032 Notes in 2013. On October 1, 2014, we repurchased $45.1 million of the 2029 Notes using restricted cash held in escrow for that purpose. The 2029 Notes were our senior unsecured obligations and rank equally in right of payment to all of our other existing and future unsecured indebtedness. The 2029 Notes accrued interest at a rate of 5.0% annually, and interest was paid semi-annually in arrears on April 1 and October 1 of each year. On October 12, 2016, the obligations of the Company with respect to the 2029 Notes were canceled and the holders receive common stock of the reorganized company per pursuant to the Plan of reorganization. 5.0% Convertible Senior Notes due 2032 As described above, we entered into separate, privately negotiated exchange agreements in which we retired $166.7 million in aggregate principal amount of our outstanding 2029 Notes in exchange for the issuance of the 2032 Notes in an aggregate principal amount of $166.3 million . The 2032 Notes had a maturity date of October 1, 2032. On September 8, 2015, we closed a privately-negotiated exchange under which we retired $55.0 million in aggregate original principal amount of our outstanding 2032 Notes in exchange for our issuance of a new series of 2032 Exchange Notes in an aggregate original principal amount of approximately $27.5 million . On October 14, 2015, we closed an additional privately-negotiated exchange under which we retired approximately $17.1 million in aggregate original principal amount of our outstanding 2032 Notes in exchange for our issuance of additional 2032 Exchange Notes in an aggregate original principal amount of approximately $8.5 million . As of September 30, 2016, $94.2 million in aggregate principal amount of the 2032 Notes remained outstanding. Unlike the 2029 Notes, the principal amount of the 2032 Notes accreted at a rate of 2% per year compounded semi-annually which commenced on August 26, 2013. The accreted portion of the principal was payable in cash upon maturity but does not bear cash interest and was not convertible into our common stock. Holders had the option to require us to purchase any outstanding 2032 Notes on each of October 1, 2017, 2022 and 2027, at a price equal to 100% of the principal amount plus the accretion thereon. No accretion expense has been recognized on the 2032 Notes subsequent to the Bankruptcy Petitions being filed on the Petition Date. We separately accounted for the liability and equity components of our 2032 Notes in a manner that reflects our nonconvertible debt borrowing rate when interest is recognized in subsequent periods. We measured the debt component of the 2032 Notes using an effective interest rate of 8% . We attributed $158.8 million of the fair value to the 2032 Note debt component which compared to the face results in a debt discount of $7.5 million which was being amortized through the first put date of October 1, 2017. Additionally, we recorded $24.4 million within additional paid-in capital representing the equity component of the 2032 Notes. A debt discount of $2.0 million remained to be amortized on the 2032 Notes as of December 31, 2015. The $1.7 million debt discount that existed when the Bankruptcy Petitions were filed on the Petition Date was written off to Reorganization items, net during the second quarter of 2016. On October 12, 2016, the obligations of the Company with respect to the 2032 Notes were canceled and the holders receive common stock of the reorganized company pursuant to the Plan of Reorganization. 5.0% Convertible Senior Exchange Notes due 2032 On September 8, 2015, we closed a privately-negotiated exchange under which we retired $55.0 million in principal amount of outstanding 2032 Notes in exchange for our issuance of approximately $27.5 million in aggregate original principal amount of 2032 Exchange Notes. On October 14, 2015, we closed an additional privately-negotiated exchange under which we retired approximately $17.1 million in aggregate original principal amount of our outstanding 2032 Notes in exchange for our issuance of additional 2032 Exchange Notes in an aggregate original principal amount of approximately $8.5 million . Many terms of the 2032 Exchange Notes remain the same as the 2032 Notes they replaced, including the 5.0% annual cash interest rate and the final maturity date of October 1, 2032. Like the 2032 Notes, the principal amount of the 2032 Exchange Notes accreted at a rate of 2% per year from August 26, 2013, compounding on a semi-annual basis. The accreted portion of the principal was payable in cash upon maturity but did not bear cash interest and was not convertible into our common stock. We accounted for these exchange transactions as troubled debt restructuring transactions pursuant to guidance provided by FASB ASC section 470-60 “Troubled Debt Restructurings by Debtors”. We had determined that the prospective undiscounted cash flows from the 2032 Exchange Notes through their maturity exceed the adjusted carrying amount of the retired 2032 Notes, consequently a gain on extinguishment of debt was not recognized for these exchanges. Accordingly, on the date of the September 8, 2015 exchange, a carrying amount of $45.2 million remained as a liability and we recorded $10.1 million to additional paid in capital representing the net fair value of the convert feature. On the date of the October 14, 2015 exchange, a carrying amount of $14.8 million remained as a liability and we recorded $2.5 million to additional paid in capital representing the net fair value of the convert feature. An annual discount rate of 1.3% and 1.4% , respectively, was being used to amortize the liability until maturity on October 1, 2032. During 2016, holders converted an aggregate amount of $32.4 million of 2032 Exchange Notes into our common stock. The carrying amount of the 2032 Exchange Notes was adjusted downward from $10.2 million to the $6.3 million principal amount when the Bankruptcy Petitions were filed on April 15, 2016, with the $3.9 million gain recognized in Reorganization items, net on the 2016 Consolidated Statements of Operations. On October 12, 2016, the obligations of the Company with respect to the 2032 Exchange Notes were canceled. and the holders receive common stock of the reorganized company pursuant to the Plan of Reorganization. 3.25% Convertible Senior Notes Due 2026 On October 12, 2016, the obligations of the Company with respect to the 2026 Notes were canceled and the holders have the right to receive common stock of the reorganized company pursuant to the Plan of Reorganization.

Loss Per Common Share

Loss Per Common Share	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Loss Per Common Share	Loss Per Common Share Upon the our emergence from bankruptcy on October 12, 2016, as discussed in Note 1, the Predecessor company outstanding common and preferred stock was canceled. New common stock and warrants were then issued. Net loss applicable to common stock was used as the numerator in computing basic and diluted loss per common share for the years ended December 31, 2016 , and 2015 . The following table sets forth information related to the computations of basic and diluted loss per share. Successor Predecessor Predecessor Period from October 13, 2016 through December 31, 2016 Period from January 1, 2016 through October 12, 2016 For the Year Ended December 31, 2015 (Amounts in thousands, except per share data) Basic and Diluted loss per share: Net loss applicable to common stock $ (4,307 ) $ 358,707 $ (409,880 ) Weighted-average shares of common stock outstanding 7,184 77,236 56,315 Basic income (loss) per share $ (0.60 ) $ 4.64 $ (7.28 ) Diluted income (loss) per share Net income (loss) applicable to common stock $ (4,307 ) $ 358,707 $ (409,880 ) Dividends on convertible preferred stock — 2,990 — Interest, discount, accretion and amortization of loan cost on 5% 2029 senior convertible notes, net of tax — 63 — Interest, discount, accretion and amortization of loan cost on 5% 2032 senior convertible notes, net of tax — 1,548 — Interest, discount, accretion and amortization of loan cost on 5% 2032 Exchange Notes due 2032, net of tax — 28 — Interest, discount, accretion and amortization of loan cost on 3.25% senior convertible notes, net of tax — 3 — Diluted net income (loss) $ (4,307 ) $ 363,339 $ (409,880 ) Weighted-average shares of common stock outstanding 7,184 77,236 56,315 Common shares issuable upon assumed conversion of convertible preferred stock or dividends paid. — 14,966 — Common shares issuable upon assumed conversion of the 2026 Notes, 2029 Notes, 2032 Notes and 2032 Exchange Notes or interest paid. — 5,911 — Common shares issuable on assumed conversion of restricted stock, stock warrants and employee stock options were not included in the computation of diluted loss per common share. — 256 — Weighted-average diluted shares outstanding 7,184 98,369 56,315 Diluted income (loss) per share (0.60 ) 3.69 (7.28 ) (1) Common shares issuable upon assumed conversion of convertible preferred stock or dividends paid were not presented as they would have been anti-dilutive as of December 31, 2015. (i) — — 20,145 (2) Common shares issuable upon assumed conversion of the 2026 Notes, 2029 Notes, 2032 Notes and 2032 Exchange Notes or interest paid were not presented as they would have been anti-dilutive as of December 31, 2015. (i) — — 15,728 (3) Common shares issuable on assumed conversion of restricted stock, stock warrants and employee stock options were not included in the computation of diluted loss per common share since their inclusion would have been anti-dilutive as of December 31, 2015. (i) — — 14,081 (4) Common shares issuable upon assumed conversion of Second Lien Term Loan 2019 were not presented as they would have been anti-dilutive. 1,875 — — (5) Common shares issuable related to the new Second Lien Term Loan Commitment Warrants and those related to Warrants issued to Unsecured Claim Holders were not presented as they would have been anti-dilutive. 3,750 — — (6) Common shares issuable related to Unsecured Claim Holders were not presented as they would have been anti dilutive. 39 — — (7) Common shares issuable on assumed conversion of restricted stock were not included in the computation of diluted loss per common share since their inclusion would have been anti-dilutive. 24 — — (i) All Predecessor Company common stock, preferred stock, options, and warrants were canceled as of October 12, 2016.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes We did not recognize any current or deferred income tax benefits or expense in 2016 and 2015 . The following is a reconciliation of the U.S. statutory income tax rate at 35% to our loss before income taxes (in thousands): Successor Predecessor Predecessor October 13, 2016 January 1, 2016 For the Year Ended December 31, 2015 Income tax (expense) benefit Tax at U.S. statutory income tax $ (1,508 ) $ 129,481 $ 167,799 Book restructuring gain — (146,770 ) — Valuation allowance 1,055 (5,003 ) (185,698 ) State income taxes-net of federal benefit (111 ) 16,985 22,110 Nondeductible expenses and other 564 5,307 (4,211 ) Total tax (expense) benefit $ — $ — $ — The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are presented below (in thousands): Successor Predecessor December 31, 2016 2015 Noncurrent deferred tax assets: Operating loss carry-forwards $ 3,033 $ 286,441 State Tax NOL and Credits 1,320 12,383 Statutory depletion carry-forward 7,035 7,035 AMT tax credit carry-forward 1,052 1,052 Compensation 244 3,040 Contingent liabilities and other 508 627 Derivative financial instruments — 10 Debt discount — 17,652 Property and equipment 112,274 172,313 Total gross noncurrent deferred tax assets 125,466 500,553 Less valuation allowance (125,164 ) (500,448 ) Net noncurrent deferred tax assets 302 105 Noncurrent deferred tax liabilities: Bond discount (302 ) (105 ) Debt discount — — Total non-current deferred tax liabilities (302 ) (105 ) Net non-current deferred tax asset $ — $ — Pursuant to the Plan of Reorganization, the Second Lien Notes, the Unsecured Notes and other obligations were extinguished. Absent an exception, a debtor recognizes cancellation of indebtedness income (“CODI”) upon discharge of its outstanding indebtedness for an amount of consideration that is less than its adjusted issue price. The Internal Revenue Code of 1986, as amended (“IRC”) provides that a debtor in a bankruptcy case may exclude CODI from taxable income but must reduce certain of its tax attributes by the amount of any CODI realized as a result of the Plan. The amount of CODI realized by a taxpayer is the adjusted issue price of any indebtedness discharged less the sum of (i) the amount of cash paid, (ii) the issue price of any new indebtedness issued and (iii) the fair market value of any other consideration, including equity, issued. As a result of the market value of equity upon emergence from the Chapter 11 Cases, the amount of CODI realized was approximately $353.7 million , which will reduce the Company’s U.S. net operating losses. The actual reduction in tax attributes does not occur until the first day of the Company’s tax year subsequent to the date of emergence, or January 1, 2017. IRC Sections 382 and 383 provide an annual limitation with respect to the ability of a corporation to utilize its tax attributes, as well as certain built-in losses, against future U.S. taxable income in the event of a change in ownership. The Company’s emergence from the Chapter 11 Cases was considered a change in ownership for purposes of IRC Section 382. The limitation under the tax code is based on the value of the Company as of the emergence date. This ownership change and resulting annual limitation will eliminate an estimated $631.3 million of federal net operating losses previously available to offset future U.S. taxable income. The Company also has net operating losses in Louisiana and Mississippi which will be subject to limitation due to the ownership change. The Company reduced its state net operating loss carryforwards by $274.5 million for Louisiana and by $100.5 million for Mississippi due to the ownership change. We have recorded a valuation allowance of $125.2 million at December 31, 2016, which results in no net deferred tax asset or liability appearing on our statement of financial position. We recorded this valuation allowance at this date after an evaluation of all available evidence (including our recent history of net operating losses in 2016 and prior years) that led to a conclusion that based upon the more-likely-than-not standard of the accounting literature, these deferred tax assets were unrecoverable. As of December 31, 2016 , we have federal net operating loss carry-forwards of approximately $643.9 million which have been reduced for the realized CODI of $353.7 million. These carryforwards are subject to IRC Section 382 and it is estimated $12.6 million will be available to offset future U.S taxable income. We also have an alternative minimum tax credit carry-forward not subject to expiration of $1.1 million which will not be used until after the available net operating losses have been used or expire and when regular tax exceeds the current year alternative minimum tax. We did not have any unrecognized tax benefits as of December 31, 2016 . The amount of unrecognized tax benefits may change in the next twelve months; however we do not expect the change to have a significant impact on our results of operations or our financial position. We file a consolidated federal income tax return in the United States and various combined and separate filings in several state and local jurisdictions. With limited exceptions, we are no longer subject to U.S. Federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2010. Our continuing practice is to recognize estimated interest and penalties related to potential underpayment on any unrecognized tax benefits as a component of income tax expense in the Consolidated Statement of Operations. We do not anticipate that total unrecognized tax benefits will significantly change due to the settlement of audits and the expiration of statute of limitations before December 31, 2017.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2016
Equity [Abstract]
Stockholders' Equity	Stockholders’ Equity Successor Company Chapter 11 Emergence and Issuance of New Equity At December 31, 2016 there were 9,108,826 million shares of our Successor Company common stock outstanding, 75,000,000 authorized, $0.01 par value per share. On October 12, 2016, in connection with our emergence from bankruptcy and according to the Plan of Reorganization, all existing shares of the Predecessor Company's common stock were canceled and the holders did not receive a distribution or retain any property in the reorganized company. The Successor Company then issued 5,757,500 shares of the Company's new common stock par value $0.01 , pro rata, to the Predecessor Company's former second lien note holders; 1,000,002 shares, awarded under the Management Incentive Plan of which 271,739 are vested but restricted and 273,098 vest over three years; 117,500 shares of common stock, pro rata, to the Predecessor Company's former unsecured note holders and former holders of general unsecured claims; of which 78,597 shares has been issued as of December 31, 2016. The 6,875,002 shares of common stock on October 12, 2016 was valued at $27.9 million and recorded in the Successor Company's equity. Pursuant to the Plan of Reorganization, 1,250,000 warrants separately valued at $2.5 million , were issued pro rata, to the Predecessor Company's former unsecured note holders and holders of general unsecured claims of which 836,158 are outstanding. On October 12, 2016, the Successor Company issued 2,499,999 warrants pro rata to the purchasers of the $40.0 million 13.5% Convertible Second Lien Senior Secured Notes. We valued the warrants and convert feature in the notes separately using a Binomial Lattice Model. The warrants and the conversion feature were valued at $10.2 million and $0.8 million respectively. We recorded the combined $11.0 million value of the warrants and conversion feature in Additional paid-in capital and reduced the carry amount of the notes as debt discount. The debt discount will be amortized through August 30, 2019, the maturity date of the notes. Private Placement of Common Stock On December 19, 2016, we sold 2,272,727 shares of our common stock at $11.00 per share in a private placement. The shares were sold to selected institutional and accredited investors. We plan to use the net proceeds of $23.8 million from the offering to fund our 2017 Haynesville Shale Trend development drilling program and for general corporate purposes, including working capital. Predecessor Company Conversions to Common Stock In 2016, we issued 9.8 million shares of our common stock to holders that exercised their conversion rights on $19.6 million face amount of the 2032 Exchange Notes. We recorded the $32.4 million carrying amount of the converted 2032 Exchange Notes to stockholders’ equity. See Note 6. Additionally, in 2016, we issued 5.2 million shares of our common stock to 10% Series E Cumulative Convertible Preferred Stock holders that exercised their conversion rights on approximately 1,032,610 depositary shares of Series E Preferred Stock. Cancellation of Preferred Stock Beginning in the third quarter of 2015 all preferred stock dividend declarations and payments were suspended. In aggregate there were $25.8 million and $10.5 million of dividends in arrears as of October 12, 2016 and December 31, 2015, respectively, for the outstanding shares of our 5.375% Series B Cumulative Convertible Preferred Stock, 10% Series C Cumulative Preferred Stock and 9.75% Series D Cumulative Preferred Stock. 5.375% Series B Cumulative Convertible Preferred Stock During 2005 and 2006 we issued a total of 2,250,000 shares of our Series B Preferred Stock. Each share of the Series B Preferred Stock has a liquidation preference of $50 per share, aggregating to $82.5 million , and bears a dividend of 5.375% per annum. Dividends are payable quarterly in arrears beginning March 15, 2006. On December 18, 2015, holders of the Series B Preferred Stock exchanged 758,434 shares of Series B Preferred Stock for 910,112 depositary shares of our new Series E Preferred Stock in conjunction with a tender offer. Holders that participated in the Series E Preferred Stock exchange forfeited any claim to all dividends in arrears and any unpaid dividends through the settlement date of the exchange tender offer. We suspended payment of dividends in the third quarter of 2015 consequently, as of October 12, 2016 there were $2.0 million of Series B Preferred Stock dividends in arrears. On October 12, 2016, the obligations of the Company with respect to the 1,483,441 shares of outstanding 5.375% Series B Cumulative Convertible Preferred Stock were canceled and the holders did not receive a distribution or retain any property in the reorganized company per pursuant to the Plan of Reorganization. 10% Series C Cumulative Preferred Stock In April 2013, we issued $110 million of Series C Preferred Stock and received $105.4 million net proceeds from the sale. The sale consisted of 4,400,000 depositary shares each representing a 1/1000th ownership interest in a share of Series C Preferred Stock, par value $1.00 per preferred share with a liquidation preference of $25,000 per preferred share ( $25.00 per depositary share) in an underwritten public offering. On December 18, 2015, holders of the Series C Preferred Stock exchanged 1,274,932 depositary shares of Series C Preferred Stock for 1,274,932 depositary shares of our new Series E Preferred Stock in conjunction with a tender offer. Holders that participated in the Series E Preferred Stock exchange forfeited any claim to all dividends in arrears and any unpaid dividends through the settlement date of the exchange tender offer. As of October 12, 2016 there were $3.9 million of Series C Preferred Stock dividends in arrears. On October 12, 2016, the obligations of the Company with respect to the 3,060 shares of outstanding 10% Series C Cumulative Preferred Stock were canceled and the holders did not receive a distribution or retain any property in the reorganized company pursuant to the Plan of Reorganization. 9.75% Series D Cumulative Preferred Stock In August 2013, we issued $130 million of Series D Preferred Stock and received $124.9 million net proceeds from the sale. The sale consisted of 5,200,000 depositary shares each representing a 1/1000th ownership interest in a share of Series D Preferred Stock, par value $1.00 per preferred share with a liquidation preference of $25,000 per preferred share ( $25.00 per depositary share) in an underwritten public offering. On December 18, 2015, holders of the Series D Preferred Stock exchanged 1,463,759 depositary shares of Series D Preferred Stock for 1,463,759 depositary shares of our new Series E Preferred Stock in conjunction with a tender offer. Holders that participated in the Series E Preferred Stock exchange forfeited any claim to all dividends in arrears and any unpaid dividends through the settlement date of the exchange tender offer. As of October 12, 2016 there were $4.6 million of Series D Preferred Stock dividends in arrears. On October 12, 2016, the obligations of the Company with respect to the 3,621 shares of outstanding 9.75% Series D Cumulative Preferred Stock were canceled and the holders did not receive a distribution or retain any property in the reorganized company pursuant to the Plan of Reorganization. 10% Series E Cumulative Convertible Preferred Stock In conjunction with a tender offer that settled on December 18, 2015 we issued 3,648,803 depositary shares of Series E Preferred Stock each representing a 1/1000th ownership interest in a share of Series E Preferred Stock, par value $1.00 per preferred share in exchange for 758,434 shares of Series B Preferred Stock, 1,274,932 depositary shares of Series C Preferred Stock and 1,463,759 depositary shares of Series D Preferred Stock. Holders of shares of our Series E Preferred Stock were entitled to receive, when and if declared by our board of directors out of funds legally available for payment, cumulative dividends at the rate per annum of 10.00% per share on the liquidation preference thereof of $10.00 per share of our Series E Preferred Stock (equivalent to $1.00 per annum per share). Dividends on our Series E Preferred Stock were payable quarterly beginning on March 15, 2016, at such annual rate, and would accumulate from the most recent date as to which dividends shall have been paid whether or not in any dividend period or periods there would have been funds legally available for the payment of such dividends. Accumulations of dividends on shares of our Series E Preferred Stock would not bear interest. We accounted for the Series E Preferred Stock exchange as an extinguishment transaction pursuant to SEC guidance codified provided by FASB Accounting Standards Codification (“ASC”) in section 260-10-S99-02. SEC guidance indicates when a preferred stock extinguishment has occurred the difference between the fair value of the consideration transferred to the holders of the preferred stock and the carrying amount of that preferred stock on the balance sheet should be subtracted from or added to net income to arrive at income available to common stockholders in the calculation of earnings per share. Accordingly, we recognized a $95.8 million return of dividend for the year ended December 31, 2015 that was added to net loss to arrive at net loss available to common stock. In December 2015, we issued 476,800 shares of our common stock to Series E Preferred Stock holders that exercised their conversion rights on approximately 95,000 depositary shares of Series E Preferred Stock. During 2016, we issued 5,163,050 shares of our common stock to the Series E Preferred Stock holders that exercised their conversion rights on 1,032,610 depository shares of Series E Preferred Stock. On October 12, 2016, the obligations of the Company with respect to the 2,521 outstanding shares of 10% Series E Cumulative Convertible Preferred Stock were canceled and the holders did not receive a distribution or retain any property in the reorganized company pursuant to the Plan of Reorganization. Preferred Stock Dividends We reported dividends of $81.2 million on our Consolidated Statements of Stockholders’ Equity (Deficit) for the year ended December 31, 2015, while we reported net preferred stock activity of $69.5 million on our Consolidated Statement of Operations for the year ended December 31, 2015. The difference between the two reported amounts is $10.5 million of preferred stock dividends in arrears and a $1.2 million dividend payment timing difference. We reported dividend gains from preferred stock exchange transactions of $4.1 million on our Consolidated Statements of Stockholders' Equity(Deficit) for the period January 1, 2016 to October 12, 2016, while we reported preferred stock, net of $11.2 million on our Consolidated Statement of Operations for the same period. The difference represents the $15.3 million of preferred stock dividends in arrears.

Derivative Activities

Derivative Activities	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Activities	Derivative Activities We use commodity and financial derivative contracts to manage fluctuations in commodity prices and interest rates. We are currently not designating our derivative contracts for hedge accounting. All derivative gains and losses during 2016 and 2015 are from our oil and natural gas derivative contracts and have been recognized in “Other income (expense)” on our Consolidated Statements of Operations. Our last interest rate derivative contract ended in 2010. The embedded derivative associated with the 8.0% Second Lien Notes was extinguished upon cancellation of the Notes upon our bankruptcy emergence. For additional information see Note 6, "Debt" of these Consolidated Financial Statements. The following table summarizes the gains and losses we recognized on our oil and natural gas derivatives for the periods presented. Successor Predecessor Predecessor Oil and Natural Gas Derivatives (in thousands) October 13, 2016 January 1, 2016 For Year Ended December 31, 2015 Gain on derivatives not designated as hedges $ — $ 30 $ 7,367 Commodity Derivative Activity We enter into swap contracts, costless collars or other derivative agreements from time to time to manage commodity price risk for a portion of our production. Our policy is that all derivative contracts are approved by the Hedging Committee of our Board of Directors, and reviewed periodically by the Board of Directors. Despite the measures taken by us to attempt to control price risk, we remain subject to price fluctuations for natural gas and crude oil sold in the spot market. Prices received for natural gas sold on the spot market are volatile due primarily to seasonality of demand and other factors beyond our control. Domestic crude oil and natural gas prices could have a material adverse effect on our financial position, results of operations and quantities of reserves recoverable on an economic basis. We routinely exercise our contractual right to net realized gains against realized losses when settling with our financial counterparties. Neither our counterparties nor we require any collateral upon entering derivative contracts. We would not have been at risk of losing any fair value amounts had our counterparties as a group been unable to fulfill their obligations as of December 31, 2016 since we did not have a derivative asset on our Consolidated Balance sheets as of December 31, 2016 . As of December 31, 2015, the open positions on our outstanding commodity derivative contracts, all of which were with JPMorgan Chase Bank, N.A. and Wells Fargo Bank, N.A., were as follows: Contract Type Daily Total Fixed Price December 31, 2015 Natural gas calls (MMBtu) 2016 20,000 7,320,000 $5.05-$5.06 $ (30 ) $ (30 ) At December 31, 2016, we did not have any outstanding commodity derivative contracts. The following table summarizes the fair values of our derivative financial instruments that are recorded at fair value classified in each level as of December 31, 2015 (in thousands). We measure the fair value of our commodity derivative contracts by applying the income approach. See Note 2 “Summary of Significant Accounting Policies” for our discussion regarding fair value, including inputs used and valuation techniques for determining fair values. Predecessor Company 2015 Fair Value Measurements Using Description Level 1 Level 2 Level 3 Total Current Assets Commodity Derivatives $ — $ — $ — $ — Non-current Assets Commodity Derivatives — — — — Current Liabilities Commodity Derivatives — (30 ) — (30 ) Non-current Liabilities Commodity Derivatives — — — — Total $ — $ (30 ) $ — $ (30 ) Generally we enter into oil and natural gas derivative contracts under which we have netting arrangements with each counter party. The fair value presented above are net and gross since there are no other off setting contracts as of December 31, 2015.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies We are party to various lawsuits from time to time arising in the normal course of business, including, but not limited to, royalty, contract, personal injury, and environmental claims. We have established reserves as appropriate for all such proceedings and intend to vigorously defend these actions. Management believes, based on currently available information, that adverse results or judgments from such actions, if any, will not be material to our consolidated financial position results of operations or liquidity. The table below provides estimates of the timing of future payments that we are obligated to make based on agreements in place at December 31, 2016 (in thousands). Payment due by Period Note Total 2017 2018 2019 2020 2020 Debt 6 $ 75,315 $ — $ 16,651 $ 58,664 $ — $ — Office space leases 5,919 816 1,510 1,540 1,540 513 Office equipment leases 77 77 — — — — Operations contracts 855 799 20 20 16 — Total contractual obligations (1) $ 82,166 $ 1,692 $ 18,181 $ 60,224 $ 1,556 $ 513 (1) This table does not include the estimated liability for dismantlement, abandonment and restoration costs of oil and natural gas properties of $2.9 million as of December 31, 2016. We record a separate liability for the asset retirement obligations. See Note 5. Operating Leases —We have commitments under an operating lease agreements for office space and office equipment leases. Total rent expense for the years ended December 31, 2016 , and 2015 was approximately $1.5 million and $1.5 million , respectively. Pipe Contracts — On June 10, 2015, we entered into an eighteen month term agreement with a third party vendor which obligated us to purchase $11.4 million in pipe. We were to receive and pay for approximately $0.6 million of pipe each month during the term of the agreement. Our obligation could be reduced subject to the vendor identifying an opportunity to sell the pipe to the open market. We took delivery of seven shipments under this agreement and a $6.8 million commitment remained at December 31, 2015. The Agreement was terminated on May 12, 2016. Defined Contribution Plan – We have a defined contribution plan (“DCP”) which matches a portion of employees’ contributions. Participation in the DCP is voluntary and all regular employees of the Company are eligible to participate. We charged to expense plan contributions of $0.1 million and $0.5 million in 2016 and 2015, respectively. We suspended the Company's portion of the match in April 2016.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2016
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions For the year ended December 31, 2016, we did not have any related party transactions. Patrick E. Malloy, III, resigned as Chairman of the Board of Directors of our Company in May 2015. Mr. Malloy is a principal of Malloy Energy Company, LLC (“MEC”). MEC owns various small working interests in the Bethany Longstreet field for which we are the operator. In accordance with industry standard joint operating agreements, we billed MEC for its share of capital and operating cost on a monthly basis. . Billings and revenue distributions during 2015 through the date of Mr. Malloy resignation from the Board of Directors was $0.3 million and $0.1 million , respectively. We also serve as the operator for a number of other oil and natural gas wells owned by affiliates of MEC in which we will earn a working interest after payout. In accordance with industry standard joint operating agreements, we bill the affiliates for its share of the capital and operating costs of these wells on a monthly basis. Billings and revenue distributions during 2015 through the date of Mr. Malloy resignation from the Board of Directors was $0.2 million and $0.2 million , respectively.

Dispositions and Acquisitions

Dispositions and Acquisitions	12 Months Ended
	Dec. 31, 2016
Business Combinations [Abstract]
Dispositions and Acquisitions	Dispositions and Acquisitions On September 4, 2015 we closed the sale of our proved reserves and a portion of the associated leasehold in the Eagle Ford Shale Trend located in La Salle and Frio counties in Texas for $118.0 million . We received net proceeds of $110.0 million after closing adjustments based upon an effective date of July 1, 2015 . We used the net proceeds from the sale to repay borrowings under our Senior Credit Facility. We recorded a $49.7 million gain on the sale in 2015. On December 13, 2016 we closed the sale of our shallow rights and the associated oil and gas reserves in our Longwood properties located in Caddo Parish in Louisiana for $1.0 million . We received net proceeds of $0.8 million after closing adjustments based on an effective date of November 1, 2016. We recorded the cash receipts as a reduction of our Full Cost Pool.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Subsequent to December 31, 2016, we executed 12,000 Mmbtu per day, natural gas put and call option transactions with BP Energy Company, which are effective from February 1, 2017 through December 31, 2017 with a floor price of $3.00 per Mmbtu and a ceiling price of $3.60 per Mmbtu.

Supplemental Information (Notes

Supplemental Information (Notes)	12 Months Ended
	Dec. 31, 2016
Extractive Industries [Abstract]
Oil and Gas Exploration and Production Industries Disclosures [Text Block]	Oil and Natural Gas Producing Activities (Unaudited) Overview All of our reserve information related to crude oil, condensate and natural gas was compiled based on estimates prepared and reviewed by our engineers. The technical persons primarily responsible for overseeing the preparation of the reserves estimates meet the requirements regarding qualifications. The reserves estimation is part of our internal controls process subject to management’s annual review and approval. These reserves estimates are prepared by Netherland, Sewell & Associates, Inc. (“NSAI”) and Ryder Scott Company (“RSC”), our independent reserve engineer consulting firms, as of December 31, 2016 and 2015 . All of our proved reserves estimates shown herein at December 31, 2016 have been independently prepared by NSAI and RSC, respectively. NSAI prepared the estimates on all our proved reserves as of December 31, 2016 on our properties other than in the TMS. RSC prepared the estimate of proved reserves as of December 31, 2016 for our TMS properties. Copies of the summary reserve reports of NSAI and RSC for 2016 are filed as exhibits 99.1 and 99.2, respectively to this Annual Report on Form 10-K. All of the subject reserves are located in the continental United States, primarily in Texas, Louisiana and Mississippi. Many assumptions and judgmental decisions are required to estimate reserves. Quantities reported are considered reasonable but are subject to future revisions, some of which may be substantial, as additional information becomes available. Such additional knowledge may be gained as the result of reservoir performance, new geological and geophysical data, additional drilling, technological advancements, price changes, and other factors. Regulations published by the SEC define proved oil and natural gas reserves as those quantities of oil and natural gas which, by analysis of geoscience and engineering data can be estimated with reasonable certainty to be economically producible from a given date forward, from known reservoirs, and under existing economic conditions, operating methods, and government regulation before the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain, regardless of whether the estimate is a deterministic estimate or probabilistic estimate. Proved developed oil and natural gas reserves are proved reserves that can be expected to be recovered through existing wells with existing equipment and operating methods or in which the cost of the required equipment is relatively minor compared with the cost of a new well or through installed extraction equipment and infrastructure operational at the time of the reserves estimates if the extraction is by means not involving a well. Prices we used to value our reserves are based on the twelve-month un-weighted arithmetic average of the first-day-of-the-month price for the period January through December 2016 . For oil volumes, the average price of $42.75 per barrel is adjusted by lease for quality, transportation fees, and regional price differentials. For natural gas volumes, the average price of $2.48 per MMBtu is adjusted by lease for energy content, transportation fees, and regional price differentials. Capitalized Costs The table below reflects our capitalized costs related to our oil and natural gas producing activities at December 31, 2016 and 2015 (in thousands): Full Cost Accounting Method Successful Efforts Accounting Method Successor Predecessor Predecessor October 13, 2016 January 1, 2016 December 31, 2015 Proved properties $ 61,040 $ 868,703 $ 866,802 Unproved properties 24,102 107,318 107,210 85,142 976,021 974,012 Less: accumulated depreciation, depletion and amortization (3,954 ) (912,252 ) (904,438 ) Net oil and natural gas properties $ 81,188 $ 63,769 $ 69,574 We did not have any capitalized exploratory well costs that were pending the determination of proved reserves as of December 31, 2016 and 2015, respectively. Costs Incurred Costs incurred in oil and natural gas property acquisition, exploration and development activities, whether capitalized or expensed, are summarized as follows (in thousands): Full Cost Accounting Method Successful Efforts Accounting Method Successor Predecessor Predecessor October 13, 2016 January 1, 2016 December 31, 2015 Property Acquisition Unproved $ 33 $ 450 $ 5,166 Proved — — — Exploration — 498 9,668 Development (1) $ 4,284 $ 1,560 $ 78,805 Total (2) $ 4,317 $ 2,508 $ 93,639 (1) Includes asset retirement costs of $0.0 million in 2016 , $0.1 million in 2015 . (2) Substantially all the costs incurred in the Successor period related to the Haynesville Shale Trend and the majority of the cost incurred in the 2016 Predecessor period related the Tuscaloosa Marine Shale Trend. The following table sets forth our net proved oil and natural gas reserves at December 31, 2016 , 2015 and 2014 and the changes in net proved oil and natural gas reserves during such years, as well as proved developed and proved undeveloped reserves at the beginning and end of each year: Natural Gas (Mmcf) Oil, Condensate and NGLs (MBbls) 2016 2015 2014 2016 2015 2014 Net proved reserves at beginning of period 31,851 104,832 329,616 3,834 28,143 20,431 Revisions of previous estimates (1) (4,426 ) (62,437 ) (108,029 ) (543 ) (15,737 ) (1,378 ) Extensions, discoveries and improved recovery (2) 264,166 6,196 1,655 — 1,207 16,452 Purchases of minerals in place — — — — — — Sales of minerals in place 2 (8,073 ) (101,810 ) — (8,551 ) (5,669 ) Production (5,555 ) (8,667 ) (16,600 ) (476 ) (1,228 ) (1,693 ) Net proved reserves at end of period 286,038 31,851 104,832 2,815 3,834 28,143 Net proved developed reserves: Beginning of period 31,851 60,708 117,184 3,834 10,719 10,100 End of period 21,872 31,851 60,708 2,815 3,834 10,719 Net proved undeveloped reserves: Beginning of period — 44,124 212,432 — 17,424 10,331 End of period 264,166 — 44,124 — — 17,424 Natural Gas Equivalents (Mmcfe) 2016 2015 2014 Net proved reserves at beginning of period 54,852 273,690 452,202 Revisions of previous estimates (1) (7,683 ) (156,858 ) (116,298 ) Extensions, discoveries and improved recovery (2) 264,166 13,440 100,368 Purchases of minerals in place — — — Sales of minerals in place (3) 2 (59,382 ) (135,822 ) Production (8,410 ) (16,038 ) (26,760 ) Net proved reserves at end of period 302,927 54,852 273,690 Net proved developed reserves: Beginning of period 54,852 125,022 177,786 End of period 44,432 54,852 125,022 Net proved undeveloped reserves: Beginning of period — 148,668 274,416 End of period 258,495 — 148,668 (1) Revisions of previous estimates in 2016 were negative, primarily due to increases in our operating expenditures and other tax rates. Revisions of previous estimates in 2015 were negative, primarily due to the transfer of undeveloped volumes out of the proved category. (2) Extensions and discoveries were positive on an overall basis in all three periods presented, primarily related to our drilling activity on existing properties in Southwest Mississippi, Southeast Louisiana and South Texas areas in 2014 and 2015. In 2016 we recognized a 264.2 Mmcfe gain reflecting our successful drilling results on our Haynesville Shale Trend Properties. (3) In 2015, we sold approximately 59.4 MMBoe attributed to the sale of producing properties in the Eagle Ford Shale Trend located in south Texas. Standardized Measure The standardized measure of discounted future net cash flows relating to proved oil and natural gas reserves as of year-end is shown below (in thousands): 2016 2015 2014 Future revenues $ 595,745 $ 245,411 $ 2,984,283 Future lease operating expenses and production taxes (213,030 ) (130,455 ) (998,874 ) Future development costs (1) (222,892 ) (20,146 ) (656,659 ) Future income tax expense (456 ) — (14,531 ) Future net cash flows 159,367 94,810 1,314,219 10% annual discount for estimated timing of cash flows (102,445 ) (24,915 ) (669,483 ) Standardized measure of discounted future net cash flows $ 56,922 $ 69,895 $ 644,736 Index price used to calculate reserves (2) Natural gas (per Mcf) $2.48 $2.58 $4.35 Oil (per Bbl) $42.75 $50.28 $94.99 (1) Includes cumulative asset retirement obligations of $10.3 million and $10.1 million in 2016 and 2015 , respectively. (2) These index prices, used to estimate our reserves at these dates, are before deducting or adding applicable transportation and quality differentials on a well-by-well basis. The estimated future net cash flows are discounted using a rate of 10 percent per year to reflect the estimated timing of the future cash flows. The standardized measure of discounted cash flows is the future net cash flows less the computed discount. Changes in the Standardized Measure The following are the principal sources of change in the standardized measure of discounted net cash flows for the years shown (in thousands): Year Ended December 31, 2016 2015 2014 Balance, beginning of year $ 69,895 $ 644,736 $ 468,147 Net changes in prices and production costs related to future production (20,442 ) (535,696 ) 68,605 Sales and transfers of oil and natural gas produced, net of production costs (15,826 ) (58,917 ) (169,114 ) Net change due to revisions in quantity estimates (8,630 ) (132,832 ) (256,200 ) Net change due to extensions, discoveries and improved recovery 25,638 24,895 377,823 Net change due to purchases and sales of minerals in place 648 (158,391 ) (2,511 ) Changes in future development costs 2,102 324,624 153,532 Previously estimated development cost incurred in period — — 17,191 Net change in income taxes (164 ) 5,848 (1,727 ) Accretion of discount 6,990 65,058 47,227 Change in production rates (timing) and other (3,289 ) (109,430 ) (58,237 ) Net increase (decrease) in standardized measures (12,973 ) (574,841 ) 176,589 Balance, end of year $ 56,922 $ 69,895 $ 644,736

Summary of Significant Accoun22

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation During the pendency of the Chapter 11 Cases, we operated our business as "debtors-in-possession" under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code. ASC 852-10 applies to entities that have filed a petition for bankruptcy under Chapter 11 of the Bankruptcy Code. The guidance requires that transactions and events directly associated with the reorganization be distinguished from the ongoing operations of the business. In addition, the guidance provides for changes in the accounting and presentation of liabilities, as well as expenses and income directly associated with the Chapter 11 Cases. In accordance with accounting principles generally accepted in the United States (“US GAAP”), we have applied ASC 852 “Reorganizations”, in preparing our consolidated financial statements. ASC 852 requires that the financial statements, for periods subsequent to the filing of the Bankruptcy Petitions, distinguish transactions and events that are directly associated with the reorganization from the ongoing operations of the business. Accordingly, certain expenses, realized gains and losses and provisions for losses that are realized or incurred in the Chapter 11 Cases are recorded in “Reorganization items, net” in the accompanying Consolidated Statements of Operations. While operating as debtors-in-possession under Chapter 11 of the Bankruptcy Code, we could sell or otherwise dispose of or liquidate assets or settle liabilities in amounts other than those reflected in our consolidated financial statements, subject to the approval of the Bankruptcy Court or otherwise as permitted in the ordinary course of business. Further, the Plan of Reorganization materially changed the amounts and classifications in our historical consolidated financial statements. Fresh Start Accounting —We applied fresh start accounting upon emergence from bankruptcy on the Effective Date. This resulted in the Company becoming a new entity for financial reporting purposes. Upon adoption of fresh start accounting, our assets and liabilities were recorded at their fair values as of the Effective Date. The Effective Date fair values of our assets and liabilities differed from the recorded values of our assets and liabilities as reflected in our consolidated financial statements as of October 12, 2016. The related adjustments were recorded in our consolidated statement of operations as reorganization items for the period April 15, 2016 to October 12, 2016 (Predecessor Company). As a result, our consolidated balance sheets and consolidated statement of operations subsequent to the Effective Date will not be comparable to our consolidated balance sheets and statements of operations prior to the Effective Date. Our consolidated financial statements and related footnotes are presented in a format that illustrates the lack of comparability between amounts presented on or after October 12, 2016 and dates prior. Our financial results for future periods following the application of fresh-start accounting will be different from historical trends and the differences may be material. References to the Successor relate to the Company on and subsequent to the Effective Date. References to the Predecessor refer to the Company prior to the Effective Date. The consolidated financial statements of the Successor have been prepared assuming that the Company will continue as a going concern and contemplate the realization of assets and the satisfaction of liabilities in the normal course of business.
Principles of Consolidation	Principles of Consolidation —The consolidated financial statements of the Company included in this Annual Report on Form 10-K have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) and in accordance with US GAAP. The consolidated financial statements include the financial statements of Goodrich Petroleum Corporation and its wholly-owned subsidiary. Intercompany balances and transactions have been eliminated in consolidation. The consolidated financial statements reflect all normal recurring adjustments that, in the opinion of management, are necessary for a fair presentation. Certain data in prior period financial statements have been adjusted to conform to the presentation of the current period. We have evaluated subsequent events through the date of this filing.
Use of Estimates	Use of Estimates —Our Management has made a number of estimates and assumptions relating to the reporting of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities to prepare these consolidated financial statements in conformity with US GAAP.
Cash and Cash Equivalents	Cash and Cash Equivalents —Cash and cash equivalents include cash on hand, demand deposit accounts and temporary cash investments with maturities of ninety days or less at date of purchase.
Allowance for Doubtful Accounts	We accrue a reserve on a receivable when, based on the judgment of management, it is probable that a receivable will not be collected and the amount of the reserve may be reasonably estimated.
Inventory	Inventory –Inventory consists of casing and tubulars that are expected to be used in our capital drilling program and oil in storage tanks. Inventory is carried on the Consolidated Balance Sheets at the lower of cost or market.
Property and Equipment	Property and Equipment--Transition from Successful Efforts Method to Full Cost Accounting Method-- Under U.S. Generally Accepted Accounting Principles ("GAAP"), two acceptable methods of accounting for oil and gas properties are allowed. These are the Successful Efforts Method and the Full Cost Method. Entities engaged in the production of oil and gas have the option of selecting either method for application in the accounting for their properties. The principal differences between the two methods are in the treatment of exploration costs, the computation of DD&A expense and the assessment of impairment of oil and gas properties. Prior to October 12, 2016, we followed the Successful Efforts Method of Accounting for exploration and development expenditures. Under this method, costs of acquiring unproved and proved oil and natural gas leasehold acreage are capitalized. When proved reserves are found on an unproved property, the associated leasehold cost is transferred to proved properties. Significant unproved leases are reviewed periodically, and a valuation allowance is provided for any estimated decline in value. Costs of all other unproved leases are amortized over the estimated average holding period of the leases. Development costs are capitalized, including the costs of unsuccessful development wells. Additionally, oil and gas properties are assessed for impairment in accordance with Accounting Standards Codification 360. Because a new entity has been created at the Effective Date, and there is no comparability to the predecessor company financial statements (see Note 3), upon emergence from bankruptcy we elected to adopt the Full Cost Method of Accounting. We believe that the true cost of developing a “portfolio” of reserves should reflect both successful and unsuccessful attempts at exploration and production. Application of the Full Cost Method of accounting will better reflect the true economics of exploring for and developing our oil and gas reserves. Therefore, as of October 12, 2016, we have used the Full Cost Method to account for our investment in oil and gas properties in the reorganized company. Under the Full Cost Method, we will capitalize all costs associated with acquisitions, exploration, development and estimated abandonment costs. We capitalize internal costs that can be directly identified with the acquisition of leasehold, as well as drilling and completion activities, but do not include any costs related to production, general corporate overhead or similar activities. Unevaluated property costs are excluded from the amortization base until we make a determination as to the existence of proved reserves on the respective property or impairment. We review our unevaluated properties at the end of each quarter to determine whether the costs should be reclassified to proved oil and gas properties and thereby subject to DD&A and the full cost ceiling test. Our sales of oil and gas properties are accounted for as adjustments to net proved oil and gas properties with no gain or loss recognized, unless the adjustment would significantly alter the relationship between capitalized costs and proved reserves. We amortize our investment in oil and gas properties through DD&A expense using the units of production (the “UOP”) method. This entails the quarterly provision for DD&A expense being computed by dividing production volumes for the period by the total proved reserves as of the beginning of the period (beginning of period reserves being determined by adding production to the end of period reserves), and applying the respective rate to the net cost of proved oil and gas properties and future development costs.
Full Cost Ceiling Test	Full Cost Ceiling Test-- The Full Cost Method requires that at the conclusion of each financial reporting period, the present value of estimated future net cash flows from proved reserves (adjusted for hedges and excluding cash flows related to estimated abandonment costs), be compared to the net capitalized costs of proved oil and gas properties, net of related deferred taxes. This comparison is referred to as a "ceiling test". If the net capitalized costs of proved oil and gas properties exceed the estimated discounted future net cash flows from proved reserves, we are required to write-down the value of our oil and gas properties to the value of the discounted cash flows. Estimated future net cash flows from proved reserves are calculated based on a 12-month average pricing assumption.
Exploration	Exploration - Prior to October 12, 2016, we followed the Successful Efforts Method of Accounting. Under Successful Efforts Method of Accounting exploration expenditures, including geological and geophysical costs, delay rentals and exploratory dry hole costs were expensed as incurred. Costs of drilling exploratory wells were initially capitalized pending determination of whether proved reserves can be attributed to the discovery. If management determined that commercial quantities of hydrocarbons have not been discovered, capitalized costs associated with exploratory wells were expensed. We had no capitalized exploratory well costs that were pending the determination of proved reserves as of December 31, 2015.
Fair Value Measurement	Fair Value Measurement — Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value of an asset should reflect its highest and best use by market participants, whether in-use or an in-exchange valuation premise. The fair value of a liability should reflect the risk of nonperformance, which includes, among other things, our credit risk. We use various methods, including the income approach and market approach, to determine the fair values of our financial instruments that are measured at fair value on a recurring basis, which depend on a number of factors, including the availability of observable market data over the contractual term of the underlying instrument. For some of our instruments, the fair value is calculated based on directly observable market data or data available for similar instruments in similar markets. For other instruments, the fair value may be calculated based on these inputs as well as other assumptions related to estimates of future settlements of these instruments. We separate our financial instruments into three levels (levels 1, 2 and 3) based on our assessment of the availability of observable market data and the significance of non-observable data used to determine the fair value of our instruments. Our assessment of an instrument can change over time based on the maturity or liquidity of the instrument, which could result in a change in the classification of the instruments between levels. Each of these levels and our corresponding instruments classified by level are further described below: • Level 1 Inputs— unadjusted quoted market prices in active markets for identical assets or liabilities. Included in this level is our senior notes; • Level 2 Inputs—quotes which are derived principally from or corroborated by observable market data. Included in this level are our Senior Credit Facility and commodity derivatives whose fair values are based on third-party quotes or available interest rate information and commodity pricing data obtained from third party pricing sources and our creditworthiness or that of our counterparties; and • Level 3 Inputs—unobservable inputs for the asset or liability, such as discounted cash flow models or valuations, based on our various assumptions and future commodity prices.
Impairment	Impairment — Prior to October 12, 2016 under the Successful Efforts Method of Accounting, we periodically assess our long-lived assets recorded in oil and natural gas properties on the Consolidated Balance Sheets to ensure that they were not overstated or carried in excess of fair value, which was computed using level 3 inputs such as discounted cash flow models or valuations. Significant level 3 assumptions associated with discounted cash flow models or valuations used in the impairment evaluation include estimates of future crude oil and natural gas prices, production costs, development expenditures, anticipated production of proved reserves, appropriate risk-adjusted discount rates and other relevant data. An evaluation is performed on a field-by-field basis at least annually or whenever changes in facts and circumstances indicate that our oil and natural gas properties may be impaired. To determine if a field is impaired, we compared the carrying value of the field to the undiscounted future net cash flows by applying management’s estimates of proved reserves, future oil and natural gas prices, future production of oil and natural gas reserves and future operating costs over the economic life of the property. In addition, other factors such as probable and possible reserves are taken into consideration when justified by economic conditions and the availability of capital to develop proved undeveloped reserves. For each property determined to be impaired, we recognize an impairment loss equal to the difference between the estimated fair value and the carrying value of the field. Fair value is estimated to be the present value of expected future net cash flows. Any impairment charge incurred is recorded in accumulated depletion, depreciation and amortization to reduce the carrying value of the field. Each part of this calculation is subject to a large degree of judgment, including the determination of the fields’ estimated reserves, future cash flows and fair value.
Depreciation	Depreciation —Depreciation and depletion of producing oil and natural gas properties is calculated using the units-of-production method. Proved developed reserves are used to compute unit rates for unamortized tangible and intangible development costs, and proved reserves are used for unamortized leasehold costs. Depreciation of furniture, fixtures and equipment, consisting of office furniture, computer hardware and software and leasehold improvements, is computed using the straight-line method over their estimated useful lives, which vary from three to five years.
Asset Retirement Obligations	Asset Retirement Obligations —Asset retirement obligations are related to the abandonment and site restoration requirements that result from the exploration and development of our oil and gas properties. We record the fair value of a liability for an asset retirement obligation in the period in which it is incurred and a corresponding increase in the carrying amount of the related long-lived asset. Accretion expense is included in “Depreciation, depletion and amortization” on our Consolidated Statements of Operations. The estimated fair value of the Company’s asset retirement obligations at inception is determined by utilizing the income approach by applying a credit-adjusted risk-free rate, which takes into account the Company’s credit risk, the time value of money, and the current economic state, to the undiscounted expected abandonment cash flows. Given the unobservable nature of the inputs, the measurement of the asset retirement obligations was classified as Level 3 in the fair value hierarchy.
Revenue Recognition	Revenue Recognition —Oil and natural gas revenues are recognized when production is sold to a purchaser at a fixed or determinable price, when delivery has occurred and title has transferred, and if collectability of the revenue is probable. Revenues from the production of crude oil and natural gas properties in which we have an interest with other producers are recognized using the entitlements method. We record a liability or an asset for natural gas balancing when we have sold more or less than our working interest share of natural gas production, respectively. At December 31, 2016 and 2015, the net liability for natural gas balancing was immaterial. Differences between actual production and net working interest volumes are routinely adjusted.
Derivative Instruments	Derivative Instruments —We use derivative instruments such as futures, forwards, options, collars and swaps for purposes of hedging our exposure to fluctuations in the price of crude oil and natural gas and to hedge our exposure to changing interest rates. Accounting standards related to derivative instruments and hedging activities require that all derivative instruments subject to the requirements of those standards be measured at fair value and recognized as assets or liabilities in the balance sheet. We offset the fair value of our asset and liability positions with the same counterparty for each commodity type. Changes in fair value are required to be recognized in earnings unless specific hedge accounting criteria are met. We have not designated any of our derivative contracts as hedges; accordingly, changes in fair value are reflected in earnings.
Income Taxes	Income Taxes —We account for income taxes, as required, under the liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry-forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized. We recognize, as required, the financial statement benefit of an uncertain tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more-likely-than-not threshold, the amount recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement with the relevant tax authority.
Earnings-Per Share	Earnings Per Share —Basic income or loss per common share is computed by dividing net income or loss available to common stockholders for each reporting period by the weighted-average number of common shares outstanding during the period. Diluted income or loss per common share is computed by dividing net income or loss available to common stockholders for each reporting period by the weighted average number of common shares outstanding during the period, plus the effects of potentially dilutive stock options and restricted stock calculated using the Treasury Stock method and the potential dilutive effect of the conversion of shares associated with Series B Preferred Stock, Series E Preferred Stock, 2026 Notes, 2029 Notes, 2032 Notes and the 2032 Exchange Notes.
Commitments and Contingencies	Commitments and Contingencies —Liabilities for loss contingencies, including environmental remediation costs, arising from claims, assessments, litigation, fines and penalties, and other sources are recorded when it is probable that a liability has been incurred and the amount of the assessment and/or remediation can be reasonably estimated. Recoveries from third parties, when probable of realization, are separately recorded and are not offset against the related environmental liability. Concentration of Credit Risk —Due to the nature of the industry, we sell our oil and natural gas production to a limited number of purchasers and, accordingly, amounts receivable from such purchasers could be significant.
Share-Based Compensation	Share-Based Compensation —We account for our share-based transactions using the fair value as of the grant date and recognize compensation expense over the requisite service period. The fair value of each restricted stock award is measured using the closing price of our common stock on the day of the award.
New Accounting Pronouncements	New Accounting Pronouncements On March 30, 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. The amendments in this ASU are intended to improve the accounting for employee share-based payments and affect all organizations that issue share-based payment awards to their employees. Several aspects of the accounting for share-based payment award transactions are simplified, including: (a) income tax consequences; (b) classification of awards as either equity or liabilities; and (c) classification on the statement of cash flows. For public entities, the amendments are effective for annual periods beginning after December 15, 2016. Our adoption of this ASU will be effective in January 2017. We do not anticipate an impact on our financial statements until the fourth quarter of 2017, as that is when the initial vestings of restricted stock issued under our Management Incentive Plan occur. On February 25, 2016 the FASB issued ASU 2016-02, Leases (Topic 842). The key difference between the existing standards and ASU 2016-02 is the requirement for lessees to recognize on their balance sheet all lease contracts with lease terms greater than 12 months, including operating leases. Specifically, lessees are required to recognize on the balance sheet at lease commencement, both: (i) a right-of-use asset, representing the lessee’s right to use the leased asset over the term of the lease; and, (ii) a lease liability, representing the lessee’s contractual obligation to make lease payments over the term of the lease. For lessees, ASU 2016-02 requires classification of leases as either operating or finance leases, which are similar to the current operating and capital lease classifications. However, the distinction between these two classifications under the ASU does not relate to balance sheet treatment, but relates to treatment and recognition in the statements of income and cash flows. Lessor accounting is largely unchanged from current US GAAP. The amendments are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, for public entities. Early application is permitted. We are currently evaluating the provisions of this ASU and assessing the impact it may have on our consolidated financial statements. In November 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update (“ASU”) 2015-17, Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes, which seeks to simplify the presentation of deferred income taxes. The amendments in this update require that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position. For public business entities, the amendments in this update are effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Earlier application is permitted as of the beginning of an interim or annual reporting period. The amendments in this update may be applied either prospectively to all deferred tax liabilities and assets or retrospectively to all periods presented. We adopted this standard in 2016 with no material impact on our financial statements. Prior period presentations have been adjusted to conform to the application of the standard. In April 2015, the FASB issued ASU 2015-03, Interest-Imputation of Interest, which seeks to simplify presentation of debt issuance costs. The ASU requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this ASU. Entities should apply the amendments in this ASU on a retrospective basis, wherein the balance sheet of each individual period presented should be adjusted to reflect the period-specific effects of applying the new guidance. For public entities, this ASU is effective for annual reporting periods beginning after December 15, 2015, including interim periods within that reporting period. We adopted the provisions of this ASU in 2016. As a result, we reclassified prior year amounts within our Consolidated Balance Sheets to conform to the current year presentation. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers . ASU 2014-09 will supersede most of the existing revenue recognition requirements in GAAP and will require entities to recognize revenue at an amount that reflects the consideration to which it expects to be entitled in exchange for transferring goods or services to a customer. The new standard also requires disclosures that are sufficient to enable users to understand an entity’s nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. In March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net) . This update provides clarifications in the assessment of principal versus agent considerations in the new revenue standard. In May 2016, the FASB issued ASU 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow Scope Improvements and Practical Expedients. The update reduces the potential for diversity in practice at initial application of Topic 606 and the cost and complexity of applying Topic 606. In May 2016, the FASB issued ASU 2016-11, Revenue Recognition and Derivatives and Hedging: Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting. This update rescinds certain SEC Staff Observer comments that are codified in Topic 605, Revenue Recognition, and Topic 932, Extractive Activities-Oil and Gas, effective upon adoption of Topic 606. These ASUs are effective for annual and interim periods beginning after December 15, 2017. We are assessing the impact that the adoption of these standards will have on our consolidated financial statements.

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Fair Value Measurements, Recurring and Nonrecurring	As of December 31, 2016 , the carrying amounts of our cash and cash equivalents, trade receivables and payables represented fair value because of the short-term nature of these instruments.
Schedules of Concentration of Risk, by Risk Factor	The revenues compared to our total oil and natural gas revenues from the top purchasers for the years ended December 31, 2016, and 2015 are as follows: Year Ended December 31, 2016 2015 Genesis Crude Oil LP 44 % 26 % Sunoco, Inc. 30 % 17 % Occidental Energy MA 13 % — % BP Energy Company — % 31 %

Fresh Start Accounting (Tables)

Fresh Start Accounting (Tables)	12 Months Ended
	Dec. 31, 2016
Reorganizations [Abstract]
Schedule Of Postconfirmation Assets At Fair Value	The following table reconciles the estimated fair value of the Successors Company assets at October 12, 2016 (in thousands): October 12, 2016 Current assets $ 28,216 Oil & gas properties Proved Reserves 37,200 Undeveloped acreage 41,570 Asset Retirement Obligation 2,896 Materials inventory 4,125 Tangible personal & real property 984 Goodwill 9 Total asset value $ 115,000 Balance sheet reclass (current assets) 18,201 Total successor assets $ 96,799
Schedule of Fresh-Start Adjustments	The following table reflects the reorganization and application of ASC 852 on our consolidated Balance Sheet as of October 12, 2016 (in thousands): Predecessor Company Reorganization Adjustments Fresh Start Adjustments Successor Company October 13, 2016 ASSETS Current assets: Cash and cash equivalents $ 3,680 $ — $ — $ 3,680 Accounts receivable, trade and other, net of allowance 590 — — 590 Accrued oil and gas revenue 4,207 — — 4,207 Inventory 4,178 — — 4,178 Prepaid expenses and other 1,161 — — 1,161 Total current assets 13,816 — — 13,816 Property and equipment Unevaluated oil & gas properties (Full Cost Method) — — 41,570 (5) 41,570 Evaluated oil & gas properties (Full Cost Method) — — 40,104 (5) 40,104 Oil and gas properties (successful efforts method) 976,021 — (976,021 ) (5) — Furniture, fixtures and equipment 7,302 — (6,318 ) (5) 984 983,323 — (900,665 ) 82,658 Less: Accumulated depletion, depreciation and amortization (919,121 ) 919,121 (5) — Net property and equipment 64,202 — 18,456 82,658 Other 325 — — 325 325 — — 325 Total Assets 78,343 $ — $ 18,456 96,799 LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable 12,761 — — 12,761 Accrued liabilities 10,368 — — 10,368 Accrued abandonment costs 83 — (83 ) (6) — Current portion of debt 40,393 — — 40,393 Total current liabilities 63,605 — (83 ) 63,522 Long-term debt — — — — Accrued abandonment cost 3,861 — (965 ) (6) 2,896 Liabilities subject to compromise 426,249 (426,249 ) (1) — — Total liabilities 493,715 (426,249 ) (1,048 ) 66,418 Stockholders' equity: Preferred stock, Series E 3 (3 ) (2) — — Preferred stock, Series D 4 (4 ) (2) — — Preferred stock, Series C 3 (3 ) (2) — — Preferred stock, Series B 1,483 (1,483 ) (2) — — Common stock (Predecessor) 15,995 (15,995 ) (2) — — Common stock (Successor) — 68 (3) — 68 Treasury Stock (46 ) 46 (2) — — Additional paid in capital (Predeccessor) 1,100,504 (1,100,504 ) (2) — — Additional paid in capital (Successor) 30,313 (3) — 30,313 Retained earnings (Accumulated deficit) (1,533,318 ) 1,513,814 (4) 19,504 (7) — Accumulated other comprehensive loss — — — — Unamortized restricted stock awards — — — — Total stockholders' equity (deficit) (415,372 ) 426,249 19,504 30,381 Total Liabilities and Stockholders' Equity 78,343 — 18,456 96,799 1. Liabilities subject to compromise were settled as follows in accordance with the Plan of Reorganization (in thousands): 8.0% Second Lien Senior Secured Notes due 2018 $ 100,000 8.875% Second Lien Senior Secured Notes due 2018 75,000 8.875% Senior Notes due 2019 116,828 3.25% Convertible Senior Notes due 2026 429 5.0% Convertible Senior Notes due 2029 6,692 5.0% Convertible Senior Notes due 2032 99,238 5.0% Convertible Exchange Senior Notes due 2032 6,305 Accrued interest 17,161 Accounts payable and accrued liabilities 4,596 Liabilities Subject to compromise at October 12, 2016 426,249 Fair value of equity in Successor Company 30,381 Gain on settlement of Liabilities subject to compromise $ 395,868 2. Reflects the cancellation of the Predecessor Company Preferred and Common Stock and associated Additional Paid in Capital. 3. Reflects the issuance of 5.8 million shares of common stock to the Second Lien Noteholders, 0.1 million shares of common stock to the unsecured debt holders, and an issued 1.0 million common shares under the Management Incentive Plan. Additionally, the unsecured debt holders were issued warrants to purchase 1.3 million shares of common stock valued at $2.5 million . 4. Reflects the cumulative impact of the reorganization adjustments discussed above (in thousands): Gain on settlement of Liabilities subject to compromise $ 395,868 Cancellation of Predecessor Company equity (1,513,814 ) Net impact to accumulated deficit $ (1,117,946 ) 5. The following table summarizes the fair value adjustment on our oil and gas properties and accumulated depletion, depreciation and amortization (in thousands): Predecessor Fresh Start Adjustments Successor Company October 13, 2016 Oil and Gas Properties Oil & gas properties (successful efforts method) $ 868,703 $ (868,703 ) $ — Unproved properties (successful efforts method) 107,318 (107,318 ) — Proved properties (Full Cost Method) — 40,104 40,104 Unproved properties ( Full Cost Method) — 41,570 41,570 Total Oil and Gas Properties 976,021 (894,347 ) 81,674 Less: Accumulated depletion and impairments (912,252 ) 912,252 — Net Oil and Gas Properties 63,769 17,905 81,674 Furniture, Fixtures and other equipment 7,302 (6,318 ) 984 Less: Accumulated depreciation (6,869 ) 6,869 — Net Furniture, Fixtures and other equipment 433 551 984 Net Oil and Gas Properties, Furniture, and fixtures and accumulated depreciation $ 64,202 $ 18,456 $ 82,658 6. Reflects the adjustment of Asset Retirement Obligation to fair value at the effective date. 7. Reorganization Items represent items directly related to the Chapter 11 bankruptcy filing and implementation of the Plan of Reorganization and are classified as Gain on reorganization, net in the Consolidated Statement of Operations. The following table summarizes the reorganization items (in thousands): Successor Predecessor Period from October 13, 2016 through Period from January 1, 2016 through Gain on settlement of liabilities subject to compromise $ — $ (395,868 ) Gain on Fresh start adjustments — (19,504 ) Professional fees and adjustments to debt (130 ) 15,950 Gain on Reorganization items, net $ (130 ) $ (399,422 )
Schedule of Liabilities Subject to Compromise	Liabilities subject to compromise were settled as follows in accordance with the Plan of Reorganization (in thousands): 8.0% Second Lien Senior Secured Notes due 2018 $ 100,000 8.875% Second Lien Senior Secured Notes due 2018 75,000 8.875% Senior Notes due 2019 116,828 3.25% Convertible Senior Notes due 2026 429 5.0% Convertible Senior Notes due 2029 6,692 5.0% Convertible Senior Notes due 2032 99,238 5.0% Convertible Exchange Senior Notes due 2032 6,305 Accrued interest 17,161 Accounts payable and accrued liabilities 4,596 Liabilities Subject to compromise at October 12, 2016 426,249 Fair value of equity in Successor Company 30,381 Gain on settlement of Liabilities subject to compromise $ 395,868

Share-Based Compensation Plans

Share-Based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Components of Share-Based Compensation	The following tables summarizes the pretax components of our share-based compensation programs recorded, recognized as a component of general and administrative expenses in the Consolidated Statements of Operations (in thousands): Management Incentive Plan Year Ended December 31, 2016 2015 Restricted stock expense $ 187 $ — Stock option expense — — Director stock expense 53 — Total share-based compensation: $ 240 $ — The following tables summarizes the pretax components of our share-based compensation programs recorded, recognized as a component of general and administrative expenses in the Consolidated Statements of Operations (in thousands): 2006 Long-Term Incentive Plan Period from January 1, 2016 through October 12, 2016 For the Year Ended December 31, 2015 Restricted stock expense $ 3,307 $ 6,689 Stock option expense — — Director stock expense — 754 Total share-based compensation: $ 3,307 $ 7,443
Schedule of Restricted Stock Activity And Values	Restricted stock activity and values under our plan for the period January 1, 2016 through October 12, 2016 and for the year ended December 31, 2015 were as follows: 2006 Long Term Incentive Plan Number of Value of Fair Value of (thousands) (thousands) 2016 126,891 $ 15 $ 24 2015 2,679,580 $ 2,525 $ 394 Upon our emergence from Chapter 11 on October 12, 2016, the 2006 Long Term Incentive Plan was canceled. Restricted stock activity and changes under the prior 2006 Long Term Incentive Plan as of for the period January 1, 2016 to October 12, 2016, are reflected in the tables below: 2006 Long Term Incentive Plan Number of Weighted Total Value (thousands) Unvested at January 1, 2016 3,136.851 $ 2.25 $ 7,066 Granted 126.891 0.12 15 Vested (924.816 ) 0.83 (768 ) Forfeited (160.507 ) 21.84 (3,505 ) Canceled at October 12, 2016 2,178.419 $ 1.29 $ 2,808 Restricted stock awarded under the MIP Plan typically have a vesting period of one to three years. During the vesting period, ownership of restricted stock shares subject to the vesting period cannot be transferred and the shares are subject to forfeiture if employment ends before the end of the vesting period. Certain restricted stock awards provide for accelerated vesting. Restricted shares are not considered to be currently issued and outstanding until the restrictions lapse and/or they vest. Management Incentive Plan Number of Value of Fair Value of (thousands) (thousands) 2016 1,859,570 $ 14,365 $ 2,944 Restricted stock activity and changes under our new Management Incentive Plan for the period October 12, 2016 to December 31, 2016 , are reflected in the tables below: Management Incentive Plan Number of Weighted Total Value (thousands) Unvested at October 12, 2016 — — — Granted 1,859,570 $ 7.72 $ 14.365 Vested (726,904 ) 4.05 2.944 Forfeited — — — Unvested at December 31, 2016 1,132,666 $ 10.08 $ 11.421
Schedule of Unrecognized Compensation Cost, Nonvested Awards	As of December 31, 2016 , total unrecognized compensation cost related to restricted stock is as follows: Management Incentive Plan Unrecognized Weighted (thousands) (years) December 31, 2016 $ 11,181 2.77
Schedule of Option Activity Under Stock Option Plans	Option activity under our stock option plan as of October 12, 2016 and changes during the year through October 12, 2016 were as follows: Shares Weighted Average Exercise Price Remaining Contractual Term Aggregate Intrinsic Value (years) (thousands) Outstanding at January 1, 2016 60,000 $ 27.81 0.36 $ — Granted — — — — Exercised — — — — Forfeited (60,000 ) — — — Outstanding at October 12, 2016 — $ — — $ — Exercisable at October 12, 2016 — $ — — $ —

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	12 Months Ended
	Dec. 31, 2016
Asset Retirement Obligation Disclosure [Abstract]
Reconciliation of Asset Retirement Obligations	The reconciliation of the beginning and ending asset retirement obligation for the periods ending December 31, 2016 and 2015 is as follows (in thousands): Successor Predecessor Predecessor October 13, 2016 January 1, 2016 Year ended December 31, 2015 Beginning balance $ 2,897 $ 3,728 $ 6,510 Liabilities incurred — — 15 Revisions in estimated liabilities — — — Liabilities settled — — (62 ) Accretion expense 36 216 434 Dispositions (1) — — (3,169 ) Ending balance $ 2,933 $ 3,944 $ 3,728 Current liability $ — $ 83 $ 83 Long term liability $ 2,933 $ 3,861 $ 3,645 (1) The majority of the 2015 dispositions represent the divestiture of our producing Eagle Ford Shale Trend properties.

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Components of Debt	Debt consisted of the following balances as of the dates indicated (in thousands): Successor Predecessor December 31, 2016 December 31, 2015 Principal Carrying Fair Principal Carrying Fair Exit Credit Facility (7) $ 16,651 $ 16,651 $ 16,651 $ — $ — $ — 13.50% Convertible Second Lien Term Loan (8) 41,170 30,554 29,036 — — — Senior Credit Facility — — — 27,000 25,387 27,000 8.0% Second Lien Senior Secured Notes due 2018 (2) (6) — — — 100,000 87,529 14,512 8.875% Second Lien Senior Secured Notes due 2018 (6) — — — 75,000 91,364 7,586 8.875% Senior Notes due 2019 (6) — — — 116,828 115,599 9,346 3.25% Convertible Senior Notes due 2026 (6) — — — 429 429 64 5.0% Convertible Senior Notes due 2029 (3) (6) — — — 6,692 6,692 67 5.0% Convertible Senior Notes due 2032 (4) (6) — — — 98,664 95,882 6,923 5.0% Convertible Exchange Senior Notes due 2032 (6) — — — 26,849 42,625 26,649 Total debt $ 57,821 $ 47,205 $ 45,687 $ 451,462 $ 465,507 $ 92,147 (1) The carrying amount for the Senior Credit Facility represents fair value as it was fully secured. The fair values of the notes were obtained by direct market quotes within Level 1 of the fair value hierarchy. The fair value of our Second Lien Notes and 2032 Exchange Notes were obtained using a discounted cash flow model within Level 3 of the fair value hierarchy. Level 1 and Level 3 of the fair value hierarchy are defined in this Item 8. (2) The debt discount was being amortized using the effective interest rate method based upon a two and a half year term through September 1, 2017, the first repurchase date applicable to the 8.0% Second Lien Notes. The $13.1 debt discount that existed when the Bankruptcy Petitions were filed on the Petition Date was written off to Reorganization items, net during the second quarter of 2016. The debt discount as of December 31, 2015 was $11.0 million . (3) The debt discount was amortized using the effective interest rate method based upon an original five year term through October 1, 2014. The debt discount was fully amortized as of December 31, 2014. (4) The debt discount was being amortized using the effective interest rate method based upon a four year term through October 1, 2017, the first repurchase date applicable to the 2032 Notes. The $1.7 million debt discount that existed when the Bankruptcy Petitions were filed on April 15, 2016 was written off to Reorganization items, net during the second quarter of 2016. The debt discount was $2.0 million as of December 31, 2015. (5) The carrying amount of debt is net of deferred loan costs of $5.1 million as of December 31, 2015. Deferred financing costs were amortized using the straight-line method through the contractual maturity dates for the Senior Credit Facility and the 2019 Notes, through the first put date of September 1, 2017 for the 8.0% Second Lien Notes and through the first put date of October 1, 2017 for the 2032 Notes. The $3.0 million of deferred loan costs for the 2019 Notes, 8.0% Second Lien Notes and 2032 Notes that existed when the Bankruptcy Petitions were filed on the Petition date was written off to Reorganization items, net during the second quarter of 2016. (6) Classified as Liability subject to compromise as of October 12, 2016. (7) The carrying amount for the Exit Credit Facility represents fair value as it was fully secured. (8) The debt discount is being amortized using the effective interest rate method based upon a maturity date of August 30, 2019. The principal includes $1.2 million of Paid-In-Kind interest. The carrying value includes $10.6 million of unamortized debt discount.The fair value of the notes was obtained by using a Binomial Lattice Model within Level 3 of the fair value hierarchy.
Summary of Total Interest Expense and Effective Interest Rate on Debt	The following table summarizes the total interest expense for the periods shown including contractual interest expense, amortization of debt discount, accretion and financing costs and the effective interest rate on the liability component of the debt (amounts in thousands, except effective interest rates). Period from October 13, 2016 through December 31, 2016 Period from January 1, 2016 through October 12, 2016 For the Year Ended December 31, 2015 Interest Effective Interest Effective Interest Effective Senior Credit Facility $ — — $ 3,342 — $ 4,308 5.1 % Exit Credit Facility 306 7.3 % — — — — % 13.50% Convertible Second Lien Notes 1,518 24.7 % — — — — % 8.0% Second Lien Senior Secured Notes due 2018 — — 936 * 11,515 16.4 % 8.875% Second Lien Senior Secured Notes due 2018 — — — — 2,333 * 8.875% Senior Notes due 2019 — — 3,107 * 21,668 9.2 % 3.25% Convertible Senior Notes due 2026 — — 4 * 13 3.3 % 5.0% Convertible Senior Notes due 2029 — — 97 * 335 5.0 % 5.0% Convertible Senior Notes due 2032 — — 2,382 * 12,495 8.6 % 5.0% Convertible Exchange Senior Notes due 2032 — — 1,484 * 2,088 * Other — — 46 * 52 * Total $ 1,824 $ 11,398 $ 54,807 * - Not meaningful

Loss Per Common Share (Tables)

Loss Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Computation of Net Income (Loss) Per Common Share	The following table sets forth information related to the computations of basic and diluted loss per share. Successor Predecessor Predecessor Period from October 13, 2016 through December 31, 2016 Period from January 1, 2016 through October 12, 2016 For the Year Ended December 31, 2015 (Amounts in thousands, except per share data) Basic and Diluted loss per share: Net loss applicable to common stock $ (4,307 ) $ 358,707 $ (409,880 ) Weighted-average shares of common stock outstanding 7,184 77,236 56,315 Basic income (loss) per share $ (0.60 ) $ 4.64 $ (7.28 ) Diluted income (loss) per share Net income (loss) applicable to common stock $ (4,307 ) $ 358,707 $ (409,880 ) Dividends on convertible preferred stock — 2,990 — Interest, discount, accretion and amortization of loan cost on 5% 2029 senior convertible notes, net of tax — 63 — Interest, discount, accretion and amortization of loan cost on 5% 2032 senior convertible notes, net of tax — 1,548 — Interest, discount, accretion and amortization of loan cost on 5% 2032 Exchange Notes due 2032, net of tax — 28 — Interest, discount, accretion and amortization of loan cost on 3.25% senior convertible notes, net of tax — 3 — Diluted net income (loss) $ (4,307 ) $ 363,339 $ (409,880 ) Weighted-average shares of common stock outstanding 7,184 77,236 56,315 Common shares issuable upon assumed conversion of convertible preferred stock or dividends paid. — 14,966 — Common shares issuable upon assumed conversion of the 2026 Notes, 2029 Notes, 2032 Notes and 2032 Exchange Notes or interest paid. — 5,911 — Common shares issuable on assumed conversion of restricted stock, stock warrants and employee stock options were not included in the computation of diluted loss per common share. — 256 — Weighted-average diluted shares outstanding 7,184 98,369 56,315 Diluted income (loss) per share (0.60 ) 3.69 (7.28 ) (1) Common shares issuable upon assumed conversion of convertible preferred stock or dividends paid were not presented as they would have been anti-dilutive as of December 31, 2015. (i) — — 20,145 (2) Common shares issuable upon assumed conversion of the 2026 Notes, 2029 Notes, 2032 Notes and 2032 Exchange Notes or interest paid were not presented as they would have been anti-dilutive as of December 31, 2015. (i) — — 15,728 (3) Common shares issuable on assumed conversion of restricted stock, stock warrants and employee stock options were not included in the computation of diluted loss per common share since their inclusion would have been anti-dilutive as of December 31, 2015. (i) — — 14,081 (4) Common shares issuable upon assumed conversion of Second Lien Term Loan 2019 were not presented as they would have been anti-dilutive. 1,875 — — (5) Common shares issuable related to the new Second Lien Term Loan Commitment Warrants and those related to Warrants issued to Unsecured Claim Holders were not presented as they would have been anti-dilutive. 3,750 — — (6) Common shares issuable related to Unsecured Claim Holders were not presented as they would have been anti dilutive. 39 — — (7) Common shares issuable on assumed conversion of restricted stock were not included in the computation of diluted loss per common share since their inclusion would have been anti-dilutive. 24 — — (i) All Predecessor Company common stock, preferred stock, options, and warrants were canceled as of October 12, 2016.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Reconciliation of Statutory Income Tax Rate to Income Loss Before Income Taxes	The following is a reconciliation of the U.S. statutory income tax rate at 35% to our loss before income taxes (in thousands): Successor Predecessor Predecessor October 13, 2016 January 1, 2016 For the Year Ended December 31, 2015 Income tax (expense) benefit Tax at U.S. statutory income tax $ (1,508 ) $ 129,481 $ 167,799 Book restructuring gain — (146,770 ) — Valuation allowance 1,055 (5,003 ) (185,698 ) State income taxes-net of federal benefit (111 ) 16,985 22,110 Nondeductible expenses and other 564 5,307 (4,211 ) Total tax (expense) benefit $ — $ — $ —
Schedule Of Deferred Tax (Liabilities) Assets	The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are presented below (in thousands): Successor Predecessor December 31, 2016 2015 Noncurrent deferred tax assets: Operating loss carry-forwards $ 3,033 $ 286,441 State Tax NOL and Credits 1,320 12,383 Statutory depletion carry-forward 7,035 7,035 AMT tax credit carry-forward 1,052 1,052 Compensation 244 3,040 Contingent liabilities and other 508 627 Derivative financial instruments — 10 Debt discount — 17,652 Property and equipment 112,274 172,313 Total gross noncurrent deferred tax assets 125,466 500,553 Less valuation allowance (125,164 ) (500,448 ) Net noncurrent deferred tax assets 302 105 Noncurrent deferred tax liabilities: Bond discount (302 ) (105 ) Debt discount — — Total non-current deferred tax liabilities (302 ) (105 ) Net non-current deferred tax asset $ — $ —

Derivative Activities (Tables)

Derivative Activities (Tables)	12 Months Ended
	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Gains and Losses on Derivatives	The following table summarizes the gains and losses we recognized on our oil and natural gas derivatives for the periods presented. Successor Predecessor Predecessor Oil and Natural Gas Derivatives (in thousands) October 13, 2016 January 1, 2016 For Year Ended December 31, 2015 Gain on derivatives not designated as hedges $ — $ 30 $ 7,367
Outstanding Commodity Derivative Contracts	As of December 31, 2015, the open positions on our outstanding commodity derivative contracts, all of which were with JPMorgan Chase Bank, N.A. and Wells Fargo Bank, N.A., were as follows: Contract Type Daily Total Fixed Price December 31, 2015 Natural gas calls (MMBtu) 2016 20,000 7,320,000 $5.05-$5.06 $ (30 ) $ (30 )
Derivative Assets and Liabilities Recorded at Fair Value	The following table summarizes the fair values of our derivative financial instruments that are recorded at fair value classified in each level as of December 31, 2015 (in thousands). We measure the fair value of our commodity derivative contracts by applying the income approach. See Note 2 “Summary of Significant Accounting Policies” for our discussion regarding fair value, including inputs used and valuation techniques for determining fair values. Predecessor Company 2015 Fair Value Measurements Using Description Level 1 Level 2 Level 3 Total Current Assets Commodity Derivatives $ — $ — $ — $ — Non-current Assets Commodity Derivatives — — — — Current Liabilities Commodity Derivatives — (30 ) — (30 ) Non-current Liabilities Commodity Derivatives — — — — Total $ — $ (30 ) $ — $ (30 )

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Timing of Future Payments Obligations	The table below provides estimates of the timing of future payments that we are obligated to make based on agreements in place at December 31, 2016 (in thousands). Payment due by Period Note Total 2017 2018 2019 2020 2020 Debt 6 $ 75,315 $ — $ 16,651 $ 58,664 $ — $ — Office space leases 5,919 816 1,510 1,540 1,540 513 Office equipment leases 77 77 — — — — Operations contracts 855 799 20 20 16 — Total contractual obligations (1) $ 82,166 $ 1,692 $ 18,181 $ 60,224 $ 1,556 $ 513 (1) This table does not include the estimated liability for dismantlement, abandonment and restoration costs of oil and natural gas properties of $2.9 million as of December 31, 2016. We record a separate liability for the asset retirement obligations. See Note 5.

Supplemental Information (Table

Supplemental Information (Tables)	12 Months Ended
	Dec. 31, 2016
Extractive Industries [Abstract]
Capitalized Costs Relating to Oil and Gas Producing Activities Disclosure [Table Text Block]	The table below reflects our capitalized costs related to our oil and natural gas producing activities at December 31, 2016 and 2015 (in thousands): Full Cost Accounting Method Successful Efforts Accounting Method Successor Predecessor Predecessor October 13, 2016 January 1, 2016 December 31, 2015 Proved properties $ 61,040 $ 868,703 $ 866,802 Unproved properties 24,102 107,318 107,210 85,142 976,021 974,012 Less: accumulated depreciation, depletion and amortization (3,954 ) (912,252 ) (904,438 ) Net oil and natural gas properties $ 81,188 $ 63,769 $ 69,574
Cost Incurred in Oil and Gas Property Acquisition, Exploration, and Development Activities Disclosure [Table Text Block]	Costs incurred in oil and natural gas property acquisition, exploration and development activities, whether capitalized or expensed, are summarized as follows (in thousands): Full Cost Accounting Method Successful Efforts Accounting Method Successor Predecessor Predecessor October 13, 2016 January 1, 2016 December 31, 2015 Property Acquisition Unproved $ 33 $ 450 $ 5,166 Proved — — — Exploration — 498 9,668 Development (1) $ 4,284 $ 1,560 $ 78,805 Total (2) $ 4,317 $ 2,508 $ 93,639 (1) Includes asset retirement costs of $0.0 million in 2016 , $0.1 million in 2015 . (2) Substantially all the costs incurred in the Successor period related to the Haynesville Shale Trend and the majority of the cost incurred in the 2016 Predecessor period related the Tuscaloosa Marine Shale Trend.
Schedule of Proved Developed and Undeveloped Oil and Gas Reserve Quantities [Table Text Block]	The following table sets forth our net proved oil and natural gas reserves at December 31, 2016 , 2015 and 2014 and the changes in net proved oil and natural gas reserves during such years, as well as proved developed and proved undeveloped reserves at the beginning and end of each year: Natural Gas (Mmcf) Oil, Condensate and NGLs (MBbls) 2016 2015 2014 2016 2015 2014 Net proved reserves at beginning of period 31,851 104,832 329,616 3,834 28,143 20,431 Revisions of previous estimates (1) (4,426 ) (62,437 ) (108,029 ) (543 ) (15,737 ) (1,378 ) Extensions, discoveries and improved recovery (2) 264,166 6,196 1,655 — 1,207 16,452 Purchases of minerals in place — — — — — — Sales of minerals in place 2 (8,073 ) (101,810 ) — (8,551 ) (5,669 ) Production (5,555 ) (8,667 ) (16,600 ) (476 ) (1,228 ) (1,693 ) Net proved reserves at end of period 286,038 31,851 104,832 2,815 3,834 28,143 Net proved developed reserves: Beginning of period 31,851 60,708 117,184 3,834 10,719 10,100 End of period 21,872 31,851 60,708 2,815 3,834 10,719 Net proved undeveloped reserves: Beginning of period — 44,124 212,432 — 17,424 10,331 End of period 264,166 — 44,124 — — 17,424 Natural Gas Equivalents (Mmcfe) 2016 2015 2014 Net proved reserves at beginning of period 54,852 273,690 452,202 Revisions of previous estimates (1) (7,683 ) (156,858 ) (116,298 ) Extensions, discoveries and improved recovery (2) 264,166 13,440 100,368 Purchases of minerals in place — — — Sales of minerals in place (3) 2 (59,382 ) (135,822 ) Production (8,410 ) (16,038 ) (26,760 ) Net proved reserves at end of period 302,927 54,852 273,690 Net proved developed reserves: Beginning of period 54,852 125,022 177,786 End of period 44,432 54,852 125,022 Net proved undeveloped reserves: Beginning of period — 148,668 274,416 End of period 258,495 — 148,668 (1) Revisions of previous estimates in 2016 were negative, primarily due to increases in our operating expenditures and other tax rates. Revisions of previous estimates in 2015 were negative, primarily due to the transfer of undeveloped volumes out of the proved category. (2) Extensions and discoveries were positive on an overall basis in all three periods presented, primarily related to our drilling activity on existing properties in Southwest Mississippi, Southeast Louisiana and South Texas areas in 2014 and 2015. In 2016 we recognized a 264.2 Mmcfe gain reflecting our successful drilling results on our Haynesville Shale Trend Properties. (3) In 2015, we sold approximately 59.4 MMBoe attributed to the sale of producing properties in the Eagle Ford Shale Trend located in south Texas.
Standardized Measure of Discounted Future Cash Flows Relating to Proved Reserves Disclosure [Table Text Block]	The standardized measure of discounted future net cash flows relating to proved oil and natural gas reserves as of year-end is shown below (in thousands): 2016 2015 2014 Future revenues $ 595,745 $ 245,411 $ 2,984,283 Future lease operating expenses and production taxes (213,030 ) (130,455 ) (998,874 ) Future development costs (1) (222,892 ) (20,146 ) (656,659 ) Future income tax expense (456 ) — (14,531 ) Future net cash flows 159,367 94,810 1,314,219 10% annual discount for estimated timing of cash flows (102,445 ) (24,915 ) (669,483 ) Standardized measure of discounted future net cash flows $ 56,922 $ 69,895 $ 644,736 Index price used to calculate reserves (2) Natural gas (per Mcf) $2.48 $2.58 $4.35 Oil (per Bbl) $42.75 $50.28 $94.99 (1) Includes cumulative asset retirement obligations of $10.3 million and $10.1 million in 2016 and 2015 , respectively. (2) These index prices, used to estimate our reserves at these dates, are before deducting or adding applicable transportation and quality differentials on a well-by-well basis.
Schedule of Changes in Standardized Measure of Discounted Future Net Cash Flows [Table Text Block]	The following are the principal sources of change in the standardized measure of discounted net cash flows for the years shown (in thousands): Year Ended December 31, 2016 2015 2014 Balance, beginning of year $ 69,895 $ 644,736 $ 468,147 Net changes in prices and production costs related to future production (20,442 ) (535,696 ) 68,605 Sales and transfers of oil and natural gas produced, net of production costs (15,826 ) (58,917 ) (169,114 ) Net change due to revisions in quantity estimates (8,630 ) (132,832 ) (256,200 ) Net change due to extensions, discoveries and improved recovery 25,638 24,895 377,823 Net change due to purchases and sales of minerals in place 648 (158,391 ) (2,511 ) Changes in future development costs 2,102 324,624 153,532 Previously estimated development cost incurred in period — — 17,191 Net change in income taxes (164 ) 5,848 (1,727 ) Accretion of discount 6,990 65,058 47,227 Change in production rates (timing) and other (3,289 ) (109,430 ) (58,237 ) Net increase (decrease) in standardized measures (12,973 ) (574,841 ) 176,589 Balance, end of year $ 56,922 $ 69,895 $ 644,736

Description of Business, Mana33

Description of Business, Management Plan and Accounting Policies - Additional Information (Detail)	Oct. 12, 2016USD ($)right$ / shares	Jul. 25, 2016USD ($)	Mar. 28, 2016$ / shares	Oct. 12, 2016USD ($)$ / shares	Dec. 31, 2006	Dec. 31, 2016USD ($)$ / shares	Oct. 11, 2016USD ($)	Apr. 15, 2016USD ($)	Apr. 14, 2016USD ($)	Dec. 31, 2015USD ($)$ / shares	Oct. 14, 2015USD ($)	Oct. 01, 2015USD ($)$ / shares	Sep. 08, 2015USD ($)	Mar. 12, 2015USD ($)$ / shares	Dec. 31, 2013USD ($)	Mar. 02, 2011USD ($)	Sep. 30, 2009USD ($)
Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Common stock, par value (in dollar per share) | $ / shares			$ 0.20							$ 0.20
Debt instrument, principal amount										$ 451,462,000
Outstanding debt										$ 465,507,000
Successor
Description Of Company And Significant Accounting Policies [Line Items]
Common stock, par value (in dollar per share) | $ / shares	$ 0.01			$ 0.01		$ 0.01
Debt instrument, principal amount						$ 57,821,000
Outstanding debt						$ 47,205,000
Plan of reorganization, percent of debtors needed to approve plan	50.00%
Series B Cumulative Convertible Preferred Stock
Description Of Company And Significant Accounting Policies [Line Items]
Preferred stock, dividend rate, percentage	5.375%				5.375%
Series B Cumulative Convertible Preferred Stock | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Preferred stock, dividend rate, percentage			5.375%	5.375%
Series C Cumulative Preferred Stock
Description Of Company And Significant Accounting Policies [Line Items]
Preferred stock, dividend rate, percentage	10.00%
Series C Cumulative Preferred Stock | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Preferred stock, dividend rate, percentage			10.00%	10.00%
Series D Cumulative Preferred Stock
Description Of Company And Significant Accounting Policies [Line Items]
Preferred stock, dividend rate, percentage	9.75%
Series D Cumulative Preferred Stock | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Preferred stock, dividend rate, percentage			9.75%	9.75%
Series E Cumulative Convertible Preferred Stock
Description Of Company And Significant Accounting Policies [Line Items]
Preferred stock, dividend rate, percentage	10.00%
Series E Cumulative Convertible Preferred Stock | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Preferred stock, dividend rate, percentage			10.00%	10.00%
8.0% Second Lien Senior Secured Notes due 2018 | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate			8.00%				8.00%			8.00%				8.00%
Common stock, par value (in dollar per share) | $ / shares														$ 0.20
Debt instrument, principal amount										$ 100,000,000				$ 1,000
Outstanding debt										$ 87,529,000
8.0% Second Lien Senior Secured Notes due 2018 | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate						8.00%
Debt instrument, principal amount						$ 0
Outstanding debt						$ 0
8.875% Second Lien Senior Secured Notes due 2018 | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate			8.875%							8.875%		8.875%
Common stock, par value (in dollar per share) | $ / shares												$ 0.20
Debt instrument, principal amount										$ 75,000,000		$ 75,000,000
Outstanding debt	$ 75,000,000			$ 75,000,000						$ 91,364,000
8.875% Second Lien Senior Secured Notes due 2018 | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate						8.875%
Debt instrument, principal amount						$ 0
Outstanding debt						$ 0
5.0% Convertible Senior Notes due 2029 | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate			5.00%							5.00%
Debt instrument, principal amount										$ 6,692,000							$ 218,500,000
Outstanding debt										$ 6,692,000
5.0% Convertible Senior Notes due 2029 | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate						5.00%
Debt instrument, principal amount						$ 0
Outstanding debt						$ 0
5.0% Convertible Senior Notes due 2032 | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate			5.00%							5.00%
Debt instrument, principal amount										$ 98,664,000	$ 8,500,000		$ 27,500,000		$ 166,300,000
Outstanding debt										$ 95,882,000
5.0% Convertible Senior Notes due 2032 | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate						5.00%
Debt instrument, principal amount						$ 0
Outstanding debt						$ 0
5.0% Convertible Exchange Senior Notes due 2032 | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate			5.00%							5.00%
Debt instrument, principal amount	$ 19,600,000			$ 19,600,000						$ 26,849,000	$ 8,500,000		$ 27,500,000
Outstanding debt								$ 6,300,000	$ 10,200,000	$ 42,625,000
5.0% Convertible Exchange Senior Notes due 2032 | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate						5.00%
Debt instrument, principal amount						$ 0
Outstanding debt						$ 0
3.25% Convertible Senior Notes due 2026
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate										3.25%
3.25% Convertible Senior Notes due 2026 | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate			3.25%							3.25%
Debt instrument, principal amount										$ 429,000
Outstanding debt										$ 429,000
3.25% Convertible Senior Notes due 2026 | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate						3.25%
Debt instrument, principal amount						$ 0
Outstanding debt						$ 0
8.875% Senior Notes due 2019 | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate			8.875%							8.875%		8.875%				8.875%
Common stock, par value (in dollar per share) | $ / shares												$ 0.20
Debt instrument, principal amount										$ 116,828,000		$ 75,000,000				$ 275,000,000
Outstanding debt										115,599,000		$ 116,800,000
8.875% Senior Notes due 2019 | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate						8.875%
Debt instrument, principal amount						$ 0
Outstanding debt						0
13.5% Convertible Second Lien Notes | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate		13.50%
Debt instrument, principal amount		$ 40,000,000
Debt instrument, conversion feature, percent of fully diluted new common stock		15.00%
13.5% Convertible Second Lien Notes | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument interest rate	13.50%			13.50%
Debt instrument, principal amount	$ 40,000,000			$ 40,000,000
Debt instrument, conversion feature, percent of fully diluted new common stock	15.00%
Right to appoint directors | right	2
Proceeds from issuance of debt used to fund operations	$ 20,000,000
13.5% Convertible Second Lien Notes | Costless Warrants For Common Stock | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Term of warrant	10 years
Class of warrant, percent of new common stock	20.00%
Senior Credit Facility | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument, principal amount										27,000,000
Outstanding debt										25,387,000
Senior Credit Facility | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument, principal amount						0
Extinguishment of debt	$ 20,000,000
Outstanding debt	20,000,000			20,000,000		0	$ 40,400,000
Exit Credit Facility (7) | Predecessor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument, principal amount										0
Outstanding debt										$ 0
Exit Credit Facility (7) | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument, principal amount	20,000,000			20,000,000		16,651,000
Outstanding debt	$ 20,000,000			20,000,000		$ 16,651,000
Unsecured Notes And Certain Other Unsecured Claims | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument, conversion feature, percent of common stock in reorganized company issued	2.00%
Unsecured Notes And Certain Other Unsecured Claims | Costless Warrants For Common Stock | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Term of warrant	10 years
Class of warrant, percent of new equity interests called by warrant	10.00%
Warrant, strike price	$ 230,000,000
Second Lien Noteholders | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Outstanding debt	$ 175,000,000			175,000,000
Debt instrument, conversion feature, percent of common stock in reorganized company issued	98.00%
Second Lien Noteholders | Costless Warrants For Common Stock | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Term of warrant	10 years
Class of warrant, percent of new equity interests called by warrant	10.00%
Warrant, strike price	$ 230,000,000
General Unsecured Claims | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Debt instrument, conversion feature, percent of common stock in reorganized company issued	2.00%
General Unsecured Claims | Costless Warrants For Common Stock | Successor
Description Of Company And Significant Accounting Policies [Line Items]
Term of warrant	10 years
Class of warrant, percent of new equity interests called by warrant	10.00%
Warrant, strike price	$ 230,000,000
Plan Of reorganization, threshold for releasing claims	$ 10,000			$ 10,000

Summary of Significant Accoun34

Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) - Sales Revenue, Net [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Successor | Genesis Crude Oil LP
Concentration Risk [Line Items]
Concentration Risk, Percentage	44.00%
Successor | Sunoco, Inc.
Concentration Risk [Line Items]
Concentration Risk, Percentage	30.00%
Successor | Occidental Energy MA [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	13.00%
Successor | BP Energy Company
Concentration Risk [Line Items]
Concentration Risk, Percentage	0.00%
Predecessor | Genesis Crude Oil LP
Concentration Risk [Line Items]
Concentration Risk, Percentage		26.00%
Predecessor | Sunoco, Inc.
Concentration Risk [Line Items]
Concentration Risk, Percentage		17.00%
Predecessor | Occidental Energy MA [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage		0.00%
Predecessor | BP Energy Company
Concentration Risk [Line Items]
Concentration Risk, Percentage		31.00%

Summary of Significant Accoun35

Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	Oct. 12, 2016	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2015	Oct. 12, 2016	Dec. 31, 2016	Dec. 31, 2015	Oct. 11, 2016	Mar. 28, 2016	Oct. 01, 2015	Mar. 12, 2015	Mar. 02, 2011
Successor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Accounts payable		$ 2,000					$ 2,000
Revenue payable		10,900					10,900
Due to joint interest owners		1,300					1,300
Severance taxes and other		200					$ 200
Write down of successor oil and gas properties		2,500
Interests in oil and gas properties, net of accumulated depletion	$ 63,800					$ 63,800
Impairment		2,486
Inventory Write-down		$ 0
Predecessor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Oil and gas pricing index, term					5 years
Impairment			$ 419,600	$ 32,500		1,583		$ 452,037
Oil and gas property, fair value of impairment properties			63,400	$ 7,800	$ 63,400			63,400
Inventory Write-down	$ 1,600					$ 0		1,168
Materials inventory			$ 4,100		$ 4,100			$ 4,100
Oil (per Bbl) | Predecessor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Oil and gas pricing index, percent increase (decrease) in period			16.00%
Natural gas (per Mcf) | Predecessor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Oil and gas pricing index, percent increase (decrease) in period			6.00%
8.0% Second Lien Senior Secured Notes due 2018 | Successor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate		8.00%					8.00%
8.0% Second Lien Senior Secured Notes due 2018 | Predecessor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate			8.00%		8.00%			8.00%	8.00%	8.00%		8.00%
8.875% Second Lien Senior Secured Notes due 2018 | Successor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate		8.875%					8.875%
8.875% Second Lien Senior Secured Notes due 2018 | Predecessor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate			8.875%		8.875%			8.875%		8.875%	8.875%
8.875% Senior Notes due 2019 | Successor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate		8.875%					8.875%
8.875% Senior Notes due 2019 | Predecessor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate			8.875%		8.875%			8.875%		8.875%	8.875%		8.875%
3.25% Convertible Senior Notes due 2026
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate			3.25%		3.25%			3.25%
3.25% Convertible Senior Notes due 2026 | Successor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate		3.25%					3.25%
3.25% Convertible Senior Notes due 2026 | Predecessor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate			3.25%		3.25%			3.25%		3.25%
5.0% Convertible Senior Notes due 2029 | Successor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate		5.00%					5.00%
5.0% Convertible Senior Notes due 2029 | Predecessor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate			5.00%		5.00%			5.00%		5.00%
5.0% Convertible Senior Notes due 2032 | Successor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate		5.00%					5.00%
5.0% Convertible Senior Notes due 2032 | Predecessor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate			5.00%		5.00%			5.00%		5.00%
5.0% Convertible Exchange Senior Notes due 2032 | Successor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate		5.00%					5.00%
5.0% Convertible Exchange Senior Notes due 2032 | Predecessor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Debt instrument interest rate			5.00%		5.00%			5.00%		5.00%
Minimum | Successor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Estimated useful lives							P3Y
Maximum | Successor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Estimated useful lives							P5Y

Fresh Start Accounting - Narrat

Fresh Start Accounting - Narrative (Details) - Successor shares in Millions, $ in Millions	Oct. 12, 2016USD ($)shares	Dec. 31, 2016shale_trend
Fresh-Start Adjustment [Line Items]
Reorganization value | $	$ 115
Reorganization value, impact of debt proceeds | $	$ 20
Discount rate		10.20%
Number of major shale trends | shale_trend		3
Inflation factor		2.40%
Risk free interest rate		7.50%
Common Stock | Discharge of Debt
Fresh-Start Adjustment [Line Items]
Warrants to purchase common stock issued (in shares)	1.3
Value of warrants issued | $	$ 2.5
Second Lien Noteholders | Common Stock | Discharge of Debt
Fresh-Start Adjustment [Line Items]
Issuance of common shares in debtor reorganization transaction (in shares)	5.8
Unsecured Debt Holders | Common Stock | Discharge of Debt
Fresh-Start Adjustment [Line Items]
Issuance of common shares in debtor reorganization transaction (in shares)	0.1
Management Incentive Plan | Common Stock | Discharge of Debt
Fresh-Start Adjustment [Line Items]
Issuance of common shares in debtor reorganization transaction (in shares)	1

Fresh Start Accounting - Succes

Fresh Start Accounting - Successor Assets at Fair Value (Details) - Successor $ in Thousands	Oct. 12, 2016USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current assets	$ 28,216
Proved Reserves	37,200
Undeveloped acreage	41,570
Undeveloped acreage	2,896
Materials inventory	4,125
Tangible personal & real property	984
Goodwill	9
Total asset value	115,000
Balance sheet reclass (current assets)	18,201
Total successor assets	$ 96,799

Fresh Start Accounting - Conden

Fresh Start Accounting - Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Oct. 13, 2016	Oct. 12, 2016
Predecessor
Current assets:
Cash and cash equivalents		$ 3,680
Accounts receivable, trade and other, net of allowance		590
Accrued oil and gas revenue		4,207
Inventory		4,178
Prepaid expenses and other		1,161
Total current assets		13,816
Property and equipment
Unevaluated oil & gas properties (Full Cost Method)		0
Evaluated oil & gas properties (Full Cost Method)		0
Oil and gas properties (successful efforts method)		976,021
Furniture, fixtures and equipment		7,302
Property, plant and equipment, gross		983,323
Less: Accumulated depletion, depreciation and amortization		(919,121)
Net property and equipment		64,202
Other		325
Total Assets		78,343
Current liabilities:
Accounts payable		12,761
Accrued liabilities		10,368
Accrued abandonment costs		83
Current portion of debt		40,393
Total current liabilities		63,605
Long-term debt		0
Accrued abandonment cost		3,861
Liabilities subject to compromise		426,249
Total liabilities		493,715
Preconfirmation, Stockholders' Equity [Abstract]
Common stock		15,995
Treasury Stock		46
Additional paid in capital (Predeccessor)		1,100,504
Retained earnings (Accumulated deficit)		(1,533,318)
Total stockholders' equity (deficit)		(415,372)
Total Liabilities and Stockholders' Equity		78,343
Predecessor | Discharge of Debt
Fresh-Start Adjustment, Increase (Decrease), Current Liabilities [Abstract]
Increase (decrease) liabilities subject to compromise		(426,249)
Increase (decrease) total liabilities		(426,249)
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Increase (decrease) common stock		(15,995)
Increase (decrease) treasury stock		46
Increase (decrease) additional paid in capital		(1,100,504)
Increase (decrease) retained earnings (accumulated deficit)		1,513,814
Increase (decrease) total stockholders' equity (deficit)		426,249
Increase (decrease) total liabilities and stockholders' equity		0
Predecessor | Revaluation of Assets
Fresh-Start Adjustment, Increase (Decrease), Property and Equipment, Net [Abstract]
Increase (decrease) unevaluated oil & gas properties (full cost method)		41,570
Increase (decrease) evaluated oil and gas properties (full cost method)		40,104
Increase (decrease) oil and gas properties (successful efforts method)		(976,021)
Increase (decrease) furniture, fixtures and equipment		(6,318)
Increase (decrease) accumulated depletion, depreciation and amortization		919,121
Increase (decrease) property, plant and equipment, gross		(900,665)
Increase (decrease) net property and equipment		18,456
Increase (decrease) total assets		18,456
Predecessor | Revaluation of Liabilities
Fresh-Start Adjustment, Increase (Decrease), Current Liabilities [Abstract]
Increase (decrease) accrued abandonment costs		(83)
Increase (decrease) total current liabilities		(83)
Increase (decrease) accrued abandonment cost		(965)
Increase (decrease) total liabilities		(1,048)
Predecessor | Change In Capital Structure
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Increase (decrease) retained earnings (accumulated deficit)		19,504
Increase (decrease) total stockholders' equity (deficit)		19,504
Increase (decrease) total liabilities and stockholders' equity		18,456
Predecessor | Series E Cumulative Preferred Stock
Preconfirmation, Stockholders' Equity [Abstract]
Preferred stock		3
Predecessor | Series E Cumulative Preferred Stock | Discharge of Debt
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Increase (decrease) preferred stock		(3)
Predecessor | Series D Cumulative Preferred Stock
Preconfirmation, Stockholders' Equity [Abstract]
Preferred stock		4
Predecessor | Series D Cumulative Preferred Stock | Discharge of Debt
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Increase (decrease) preferred stock		(4)
Predecessor | Series C Cumulative Preferred Stock
Preconfirmation, Stockholders' Equity [Abstract]
Preferred stock		3
Predecessor | Series C Cumulative Preferred Stock | Discharge of Debt
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Increase (decrease) preferred stock		(3)
Predecessor | Series B Cumulative Convertible Preferred Stock
Preconfirmation, Stockholders' Equity [Abstract]
Preferred stock		1,483
Predecessor | Series B Cumulative Convertible Preferred Stock | Discharge of Debt
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Increase (decrease) preferred stock		(1,483)
Successor
Current assets:
Cash and cash equivalents	$ 3,680
Accounts receivable, trade and other, net of allowance	590
Accrued oil and gas revenue	4,207
Inventory	4,178
Prepaid expenses and other	1,161
Total current assets	13,816
Postconfirmation, Property and Equipment, Net [Abstract]
Unevaluated oil & gas properties (Full Cost Method)	41,570
Evaluated oil & gas properties (Full Cost Method)	40,104
Oil and gas properties (successful efforts method)	0
Furniture, fixtures and equipment	984
Property and equipment, gross	82,658
Less: Accumulated depletion, depreciation and amortization	0
Net property and equipment	82,658
Other	325
Total Assets	96,799
Current liabilities:
Accounts payable	12,761
Accrued liabilities	10,368
Accrued abandonment costs	0
Current portion of debt	40,393
Total current liabilities	63,522
Long-term debt	0
Accrued abandonment cost	2,896
Liabilities subject to compromise	0
Total liabilities	66,418
Postconfirmation, Stockholders' Equity [Abstract]
Common stock (Successor)	68
Treasury Stock	0
Additional paid in capital (Successor)	30,313
Retained earnings (Accumulated deficit)	0
Total stockholders' equity (deficit)	30,381
Total Liabilities and Stockholders' Equity	$ 96,799
Successor | Discharge of Debt
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract]
Increase (decrease) common stock		68
Increase (decrease) additional paid in capital		$ 30,313

Fresh Start Accounting - Liabil

Fresh Start Accounting - Liabilities Subject to Compromise (Details) - Predecessor $ in Thousands	Oct. 12, 2016USD ($)	Oct. 12, 2016USD ($)
Fresh-Start Adjustment [Line Items]
Gain on settlement of Liabilities subject to compromise		$ 395,868
Discharge of Debt
Fresh-Start Adjustment [Line Items]
Accrued interest	$ 17,161	17,161
Accounts payable and accrued liabilities	4,596	4,596
Liabilities Subject to compromise at October 12, 2016	426,249	426,249
Fair value of equity in Successor Company	30,381
Gain on settlement of Liabilities subject to compromise	395,868
8.0% Second Lien Senior Secured Notes due 2018 | Senior Notes [Member] | Discharge of Debt
Fresh-Start Adjustment [Line Items]
Senior notes	100,000	100,000
8.875% Second Lien Senior Secured Notes due 2018 | Senior Notes [Member] | Discharge of Debt
Fresh-Start Adjustment [Line Items]
Senior notes	75,000	75,000
8.875% Senior Notes due 2019 | Senior Notes [Member] | Discharge of Debt
Fresh-Start Adjustment [Line Items]
Senior notes	116,828	116,828
3.25% Convertible Senior Notes due 2026 | Senior Notes [Member] | Discharge of Debt
Fresh-Start Adjustment [Line Items]
Senior notes	429	429
5.0% Convertible Senior Notes due 2029 | Senior Notes [Member] | Discharge of Debt
Fresh-Start Adjustment [Line Items]
Senior notes	6,692	6,692
5.0% Convertible Senior Notes due 2032 | Senior Notes [Member] | Discharge of Debt
Fresh-Start Adjustment [Line Items]
Senior notes	99,238	99,238
5.0% Convertible Exchange Senior Notes due 2032 | Senior Notes [Member] | Discharge of Debt
Fresh-Start Adjustment [Line Items]
Senior notes	$ 6,305	$ 6,305

Fresh Start Accounting - Cumula

Fresh Start Accounting - Cumulative Impact of Reorganizational Adjustments (Details) - Predecessor $ in Thousands	Oct. 12, 2016USD ($)	Oct. 12, 2016USD ($)
Fresh-Start Adjustment [Line Items]
Gain on settlement of Liabilities subject to compromise		$ 395,868
Discharge of Debt
Fresh-Start Adjustment [Line Items]
Gain on settlement of Liabilities subject to compromise	$ 395,868
Net impact to accumulated deficit	(1,513,814)	(1,513,814)
Net impact to accumulated deficit	$ 1,117,946	$ 1,117,946

Fresh Start Accounting - Fair V

Fresh Start Accounting - Fair Value Adjustments For Oil and Gas Properties (Details) - USD ($) $ in Thousands	Oct. 13, 2016	Oct. 12, 2016
Predecessor
Property and equipment
Oil & gas properties (successful efforts method)		$ 868,703
Unproved properties (successful efforts method)		107,318
Proved properties (Full Cost Method)		0
Unproved properties ( Full Cost Method)		0
Total Oil and Gas Properties		976,021
Less: Accumulated depletion and impairments		(912,252)
Net Oil and Gas Properties		63,769
Furniture, fixtures and equipment		7,302
Less: Accumulated depreciation		(6,869)
Net Furniture, Fixtures and other equipment		433
Net property and equipment		64,202
Predecessor | Revaluation of Assets
Fresh-Start Adjustment, Increase (Decrease), Property and Equipment, Net [Abstract]
Increase (decrease) oil and gas properties (successful efforts method)		(868,703)
Increase (decrease) unproved oil and gas properties (successful efforts method)		(107,318)
Increase (decrease) evaluated oil and gas properties (full cost method)		40,104
Increase (decrease) unevaluated oil & gas properties (full cost method)		41,570
Increase (decrease) total oil and gas properties		(894,347)
Increase (decrease) accumulated depletion and impairments		912,252
Increase (decrease) net oil and gas properties		17,905
Increase (decrease) furniture, fixtures and equipment		(6,318)
Increase (decrease) accumulated depreciation		6,869
Increase (decrease) net furniture, fixtures and other equipment		551
Increase (decrease) net property and equipment		$ 18,456
Successor
Postconfirmation, Property and Equipment, Net [Abstract]
Oil & gas properties (successful efforts method)	$ 0
Unproved properties (successful efforts method)	0
Proved properties (Full Cost Method)	40,104
Unproved properties ( Full Cost Method)	41,570
Total Oil and Gas Properties	81,674
Less: Accumulated depletion and impairments	0
Net Oil and Gas Properties	81,674
Furniture, fixtures and equipment	984
Less: Accumulated depreciation	0
Net Furniture, Fixtures and other equipment	984
Net property and equipment	$ 82,658

Fresh Start Accounting - Reorga

Fresh Start Accounting - Reorganization Items Recognized In Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2015
Successor
Fresh-Start Adjustment [Line Items]
Gain on settlement of liabilities subject to compromise	$ 0
Gain on Fresh start adjustments	0
Professional fees and adjustments to debt	(130)
Gain on Reorganization items, net	$ (130)
Predecessor
Fresh-Start Adjustment [Line Items]
Gain on settlement of liabilities subject to compromise		$ (395,868)
Gain on Fresh start adjustments		(19,504)
Professional fees and adjustments to debt		15,950
Gain on Reorganization items, net		$ (399,422)	$ 0

Share-Based Compensation Plan43

Share-Based Compensation Plans - Additional Information (Detail) - USD ($)	Oct. 12, 2016	Dec. 31, 2016	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2016	Dec. 31, 2015
Successor | 2006 Plan
Share Based Compensation [Line Items]
Options outstanding (in shares)	0			0
Successor | Management Incentive Plan
Share Based Compensation [Line Items]
Vesting period	3 years
Successor | Restricted Stock | 2006 Plan
Share Based Compensation [Line Items]
Non-vested restricted stock awards outstanding (in shares)	2,200,000			2,200,000
Unrecognized compensation costs	$ 2,800,000			$ 2,800,000
Vesting period	3 years
Successor | Restricted Stock | Management Incentive Plan
Share Based Compensation [Line Items]
Number of Shares Granted (in shares)			1,859,570
Granted (in dollars per share)			$ 7.72
Successor | Restricted Stock, Stock Options, Performance Awards, Phantom Shares and Stock Appreciation Rights [Member] | Management Incentive Plan
Share Based Compensation [Line Items]
Number of Shares Granted (in shares)	1,000,000	900,000
Granted (in dollars per share)		$ 12
Vesting period		3 years
Predecessor
Share Based Compensation [Line Items]
Stock options outstanding, intrinsic value						$ 0
Stock options, granted (in shares)				0
Predecessor | 2006 Plan
Share Based Compensation [Line Items]
Options outstanding (in shares)	0			0		60,000
Stock options outstanding, intrinsic value						$ 0
Predecessor | Restricted Stock | 2006 Plan
Share Based Compensation [Line Items]
Number of Shares Granted (in shares)				126,891	2,679,580
Granted (in dollars per share)				$ 0.12
Predecessor | Restricted Stock | 2006 Plan | Minimum
Share Based Compensation [Line Items]
Vesting period					1 year
Predecessor | Restricted Stock | 2006 Plan | Maximum
Share Based Compensation [Line Items]
Vesting period					3 years
Predecessor | Stock Option | 2006 Plan
Share Based Compensation [Line Items]
Vesting period				3 years
Predecessor | Stock Option | 2006 Plan | Minimum
Share Based Compensation [Line Items]
Expiry date from the date of grant				7 years
Predecessor | Stock Option | 2006 Plan | Maximum
Share Based Compensation [Line Items]
Expiry date from the date of grant				10 years
Director | Successor | Restricted Stock, Stock Options, Performance Awards, Phantom Shares and Stock Appreciation Rights [Member] | Management Incentive Plan
Share Based Compensation [Line Items]
Vesting period	12 months

Components of Share-Based Compe

Components of Share-Based Compensation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Successor | Management Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation	$ 240
Successor | Management Incentive Plan | Director
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation	53
Successor | 2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation	3,307
Successor | 2006 Plan | Director
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation	0
Predecessor | Management Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation		$ 0
Predecessor | Management Incentive Plan | Director
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation		0
Predecessor | 2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation		7,443
Predecessor | 2006 Plan | Director
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation		754
Restricted Stock | Successor | Management Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation	187
Restricted Stock | Successor | 2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation	3,307
Restricted Stock | Predecessor | Management Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation		0
Restricted Stock | Predecessor | 2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation		6,689
Stock Option | Successor | Management Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation	0
Stock Option | Successor | 2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation	$ 0
Stock Option | Predecessor | Management Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation		0
Stock Option | Predecessor | 2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation		$ 0

Schedule of Restricted Stock Ac

Schedule of Restricted Stock Activity And Values (Detail) - Restricted Stock - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2016
Predecessor | 2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Granted (in shares)		126,891	2,679,580
Value of Shares Granted	$ 3	$ 0	$ 3
Fair Value of Stock Vested		$ 0	0
Successor | Management Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Granted (in shares)	1,859,570
Value of Shares Granted	$ 14		$ 14
Fair Value of Stock Vested	$ 3

Schedule of Restricted Stock 46

Schedule of Restricted Stock Activity (Detail) - Restricted Stock - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2016
Predecessor | 2006 Plan
Number of Shares
Unvested, beginning of period (in shares)	2,178,419	3,136,851	3,136,851
Granted (in shares)		126,891	2,679,580
Vested (in shares)		(924,816)
Forfeited (in shares)		(160,507)
Unvested, end of period (in shares)		2,178,419
Weighted Average Grant-Date Fair Value
Unvested, beginning of period (in dollars per share)	$ 1.29	$ 2.25	$ 2.25
Granted (in dollars per share)		0.12
Vested (in dollars per share)		0.83
Forfeited (in dollars per share)		21.84
Unvested, end of period (in dollars per share)		$ 1.29
Total Value
Unvested, beginning of period	$ 2,808	$ 7,066	$ 7,066
Granted		15
Vested		(768)
Forfeited		(3,505)
Unvested, end of period		$ 2,808
Successor | Management Incentive Plan
Number of Shares
Unvested, beginning of period (in shares)	0
Granted (in shares)	1,859,570
Vested (in shares)	(726,904)
Forfeited (in shares)	0
Unvested, end of period (in shares)	1,132,666	0	1,132,666
Weighted Average Grant-Date Fair Value
Unvested, beginning of period (in dollars per share)	$ 0
Granted (in dollars per share)	7.72
Vested (in dollars per share)	4.05
Forfeited (in dollars per share)	0
Unvested, end of period (in dollars per share)	$ 10.08	$ 0	$ 10.08
Total Value
Unvested, beginning of period	$ 0
Granted	14
Vested	3
Forfeited	0
Unvested, end of period	$ 11	$ 0	$ 11

Summary of Unrecognized Compens

Summary of Unrecognized Compensation Cost (Detail) - Management Incentive Plan - Successor - Restricted Stock $ in Thousands	3 Months Ended
	Dec. 31, 2016USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 11,181
Weighted Average years to recognition	2 years 9 months 7 days

Schedule of Option Activity Und

Schedule of Option Activity Under Stock Option Plans (Detail) - Predecessor - USD ($)	9 Months Ended	12 Months Ended
	Oct. 12, 2016	Dec. 31, 2015
Average Intrinsic Value
Outstanding		$ 0
2006 Plan
Number of Shares
Outstanding, beginning of period (in shares)	60,000
Granted (in shares)	0
Exercised (in shares)	0
Forfeited (in shares)	(60,000)
Outstanding, end of period (in shares)	0	60,000
Exercisable, end of period (in shares)	0
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 27.81
Granted (in dollars per share)	0
Exercised (in dollars per share)	0
Forfeited (in dollars per share)	0
Outstanding, end of period (in dollars per share)	0	$ 27.81
Exercisable (in dollars per share)	$ 0
Weighted Average Remaining Contractual Term
Outstanding		4 months 10 days
Average Intrinsic Value
Outstanding		$ 0

Reconciliation of Asset Retirem

Reconciliation of Asset Retirement Obligations (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2015
Successor
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning balance	$ 2,897	$ 2,900
Liabilities incurred	0
Revisions in estimated liabilities	0
Liabilities settled	0
Accretion expense	36
Dispositions	0
Ending balance	2,933	2,897	$ 2,900
Current liability	0
Long term liability	2,933
Predecessor
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning balance	$ 3,944	3,728	6,510
Liabilities incurred		0	15
Revisions in estimated liabilities		0	0
Liabilities settled		0	(62)
Accretion expense		216	434
Dispositions		0	(3,169)
Ending balance		3,944	3,728
Current liability		83	83
Long term liability		$ 3,861	$ 3,645

Components of Debt (Detail)

Components of Debt (Detail) - USD ($)	Apr. 15, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Oct. 12, 2016	Oct. 11, 2016	Apr. 14, 2016	Mar. 28, 2016	Oct. 14, 2015	Oct. 01, 2015	Sep. 08, 2015	Mar. 12, 2015	Dec. 31, 2013	Mar. 02, 2011	Sep. 30, 2009
3.25% Convertible Senior Notes due 2026
Debt Instrument [Line Items]
Debt instrument interest rate		3.25%
Successor
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 57,821,000
Outstanding debt				47,205,000
Debt instrument, fair value				45,687,000
Successor | Exit Credit Facility (7)
Debt Instrument [Line Items]
Debt instrument, principal amount				16,651,000	$ 20,000,000
Outstanding debt				16,651,000	20,000,000
Debt instrument, fair value				16,651,000
Successor | 13.50% Convertible Second Lien Term Loan (8)
Debt Instrument [Line Items]
Debt instrument, principal amount				41,170,000
Outstanding debt				30,554,000
Debt instrument, fair value				29,036,000
Debt discount				10,600,000
Paid in kind interest included in long-term debt				1,200,000
Successor | Senior Credit Facility
Debt Instrument [Line Items]
Debt instrument, principal amount				0
Outstanding debt				0	20,000,000	$ 40,400,000
Debt instrument, fair value				0
Successor | 8.0% Second Lien Senior Secured Notes due 2018
Debt Instrument [Line Items]
Debt instrument, principal amount				0
Outstanding debt				0
Debt instrument, fair value				$ 0
Debt instrument interest rate				8.00%
Successor | 8.875% Second Lien Senior Secured Notes due 2018
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 0
Outstanding debt				0
Debt instrument, fair value				$ 0
Debt instrument interest rate				8.875%
Successor | 8.875% Senior Notes due 2019
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 0
Outstanding debt				0
Debt instrument, fair value				$ 0
Debt instrument interest rate				8.875%
Successor | 3.25% Convertible Senior Notes due 2026
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 0
Outstanding debt				0
Debt instrument, fair value				$ 0
Debt instrument interest rate				3.25%
Successor | 5.0% Convertible Senior Notes due 2029
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 0
Outstanding debt				0
Debt instrument, fair value				$ 0
Debt instrument interest rate				5.00%
Successor | 5.0% Convertible Senior Notes due 2032
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 0
Outstanding debt				0
Debt instrument, fair value				$ 0
Debt instrument interest rate				5.00%
Successor | 5.0% Convertible Exchange Senior Notes due 2032
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 0
Outstanding debt				0
Debt instrument, fair value				$ 0
Debt instrument interest rate				5.00%
Predecessor
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 451,462,000
Outstanding debt		465,507,000
Debt instrument, fair value		92,147,000										$ 78,700,000
Deferred finance costs, net		5,100,000
Predecessor | Exit Credit Facility (7)
Debt Instrument [Line Items]
Debt instrument, principal amount		0
Outstanding debt		0
Debt instrument, fair value		0
Predecessor | 13.50% Convertible Second Lien Term Loan (8)
Debt Instrument [Line Items]
Debt instrument, principal amount		0
Outstanding debt		0
Debt instrument, fair value		0
Predecessor | Senior Credit Facility
Debt Instrument [Line Items]
Debt instrument, principal amount		27,000,000
Outstanding debt		25,387,000
Debt instrument, fair value		27,000,000
Predecessor | 8.0% Second Lien Senior Secured Notes due 2018
Debt Instrument [Line Items]
Debt instrument, principal amount		100,000,000										$ 1,000
Outstanding debt		87,529,000
Debt instrument, fair value		$ 14,512,000
Debt Instrument, Term		2 years 6 months
Debt instrument interest rate		8.00%				8.00%		8.00%				8.00%
Debt discount	$ 13,100,000	$ 11,000,000										$ 21,300,000
Predecessor | 8.875% Second Lien Senior Secured Notes due 2018
Debt Instrument [Line Items]
Debt instrument, principal amount		75,000,000								$ 75,000,000
Outstanding debt		91,364,000			75,000,000
Debt instrument, fair value		$ 7,586,000
Debt instrument interest rate		8.875%						8.875%		8.875%
Predecessor | 8.875% Senior Notes due 2019
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 116,828,000								$ 75,000,000				$ 275,000,000
Outstanding debt		115,599,000								$ 116,800,000
Debt instrument, fair value		$ 9,346,000
Debt instrument interest rate		8.875%						8.875%		8.875%				8.875%
Deferred finance costs, net		$ 3,000,000
Predecessor | 3.25% Convertible Senior Notes due 2026
Debt Instrument [Line Items]
Debt instrument, principal amount		429,000
Outstanding debt		429,000
Debt instrument, fair value		$ 64,000
Debt instrument interest rate		3.25%						3.25%
Predecessor | 5.0% Convertible Senior Notes due 2029
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 6,692,000													$ 218,500,000
Outstanding debt		6,692,000
Debt instrument, fair value		$ 67,000
Debt Instrument, Term			5 years
Debt instrument interest rate		5.00%						5.00%
Predecessor | 5.0% Convertible Senior Notes due 2032
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 98,664,000							$ 8,500,000		$ 27,500,000		$ 166,300,000
Outstanding debt		95,882,000
Debt instrument, fair value		$ 6,923,000
Debt Instrument, Term	4 years
Debt instrument interest rate		5.00%						5.00%
Debt discount	$ 1,700,000	$ 2,000,000											$ 7,500,000
Predecessor | 5.0% Convertible Exchange Senior Notes due 2032
Debt Instrument [Line Items]
Debt instrument, principal amount		26,849,000			$ 19,600,000				$ 8,500,000		$ 27,500,000
Outstanding debt	$ 6,300,000	42,625,000					$ 10,200,000
Debt instrument, fair value		$ 26,649,000
Debt instrument interest rate		5.00%						5.00%

Summary of Total Interest Expen

Summary of Total Interest Expense and Effective Interest Rate on Debt (Detail) - USD ($) $ in Thousands	Oct. 12, 2016	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2015
Successor
Debt Instrument [Line Items]
Interest Expense		$ 1,824
Successor | Senior Credit Facility
Debt Instrument [Line Items]
Interest Expense		$ 0
Effective Interest Rate		0.00%
Successor | Exit Credit Facility (7)
Debt Instrument [Line Items]
Interest Expense		$ 306
Effective Interest Rate		7.30%
Successor | 13.5% Convertible Second Lien Notes
Debt Instrument [Line Items]
Interest Expense		$ 1,518
Effective Interest Rate		24.70%
Successor | 8.0% Second Lien Senior Secured Notes due 2018
Debt Instrument [Line Items]
Interest Expense		$ 0
Effective Interest Rate		0.00%
Successor | 8.875% Second Lien Senior Secured Notes due 2018
Debt Instrument [Line Items]
Interest Expense		$ 0
Effective Interest Rate		0.00%
Successor | 8.875% Senior Notes due 2019
Debt Instrument [Line Items]
Interest Expense		$ 0
Effective Interest Rate		0.00%
Successor | 3.25% Convertible Senior Notes due 2026
Debt Instrument [Line Items]
Interest Expense		$ 0
Effective Interest Rate		0.00%
Successor | 5.0% Convertible Senior Notes due 2029
Debt Instrument [Line Items]
Interest Expense		$ 0
Effective Interest Rate		0.00%
Successor | 5.0% Convertible Senior Notes due 2032
Debt Instrument [Line Items]
Interest Expense		$ 0
Effective Interest Rate		0.00%
Successor | 5.0% Convertible Exchange Senior Notes due 2032
Debt Instrument [Line Items]
Interest Expense		$ 0
Effective Interest Rate		0.00%
Successor | Other
Debt Instrument [Line Items]
Interest Expense		$ 0
Effective Interest Rate		0.00%
Predecessor
Debt Instrument [Line Items]
Interest Expense			$ 11,398	$ 54,807
Predecessor | Senior Credit Facility
Debt Instrument [Line Items]
Interest Expense			$ 3,342	$ 4,308
Effective Interest Rate	5.80%		11.40%	5.10%
Predecessor | Exit Credit Facility (7)
Debt Instrument [Line Items]
Interest Expense			$ 0	$ 0
Effective Interest Rate			0.00%	0.00%
Predecessor | 13.5% Convertible Second Lien Notes
Debt Instrument [Line Items]
Interest Expense			$ 0	$ 0
Effective Interest Rate			0.00%	0.00%
Predecessor | 8.0% Second Lien Senior Secured Notes due 2018
Debt Instrument [Line Items]
Interest Expense			$ 936	$ 11,515
Effective Interest Rate				16.40%
Predecessor | 8.875% Second Lien Senior Secured Notes due 2018
Debt Instrument [Line Items]
Interest Expense			$ 0	$ 2,333
Effective Interest Rate			0.00%
Predecessor | 8.875% Senior Notes due 2019
Debt Instrument [Line Items]
Interest Expense			$ 3,107	$ 21,668
Effective Interest Rate				9.20%
Predecessor | 3.25% Convertible Senior Notes due 2026
Debt Instrument [Line Items]
Interest Expense			4	$ 13
Effective Interest Rate				3.30%
Predecessor | 5.0% Convertible Senior Notes due 2029
Debt Instrument [Line Items]
Interest Expense			97	$ 335
Effective Interest Rate				5.00%
Predecessor | 5.0% Convertible Senior Notes due 2032
Debt Instrument [Line Items]
Interest Expense			2,382	$ 12,495
Effective Interest Rate				8.60%
Predecessor | 5.0% Convertible Exchange Senior Notes due 2032
Debt Instrument [Line Items]
Interest Expense			1,484	$ 2,088
Predecessor | Other
Debt Instrument [Line Items]
Interest Expense			$ 46	$ 52

Debt - Additional Information (

Debt - Additional Information (Detail)	Oct. 12, 2016USD ($)$ / shares	Jul. 25, 2016USD ($)	Oct. 14, 2015USD ($)	Oct. 01, 2015USD ($)tranche$ / sharesshares	Sep. 08, 2015USD ($)	Mar. 12, 2015USD ($)unit$ / sharesshares	Aug. 26, 2013	Dec. 31, 2016USD ($)$ / shares	Oct. 12, 2016USD ($)$ / shares	Dec. 31, 2016USD ($)$ / shares	Dec. 31, 2015USD ($)$ / shares	Dec. 31, 2013USD ($)	Oct. 11, 2016USD ($)	Jun. 30, 2016USD ($)	Apr. 15, 2016USD ($)	Apr. 14, 2016USD ($)	Mar. 28, 2016$ / shares	Oct. 01, 2014USD ($)	Mar. 02, 2011USD ($)	Sep. 30, 2009USD ($)
3.25% Convertible Senior Notes due 2026
Debt [Line Items]
Debt instrument interest rate											3.25%
Successor
Debt [Line Items]
Outstanding debt								$ 47,205,000		$ 47,205,000
Debt instrument, principal amount								57,821,000		57,821,000
Long-term debt								$ 75,315,000		$ 75,315,000
Common stock, par value (in dollar per share) | $ / shares	$ 0.01							$ 0.01	$ 0.01	$ 0.01
Debt instrument, fair value								$ 45,687,000		$ 45,687,000
Warrant issuance	$ 11,000,000							10,964,000
Successor | Senior Credit Facility
Debt [Line Items]
Outstanding debt	20,000,000							$ 0	$ 20,000,000	0			$ 40,400,000
Long-term debt including accrued default penalty	40,400,000								40,400,000
Senior credit facility, current borrowing capacity	20,000,000								20,000,000
Borrowing base deficiency	20,200,000								20,200,000
Effective Interest Rate								0.00%
Debt instrument, principal amount								$ 0		0
Debt instrument, fair value								0		0
Successor | Exit Credit Facility (7)
Debt [Line Items]
Outstanding debt	20,000,000							$ 16,651,000	20,000,000	16,651,000
Effective Interest Rate								7.30%
Debt instrument, principal amount	20,000,000							$ 16,651,000	20,000,000	16,651,000
Debt instrument, outstanding balance and cash balance threshold for mandatory prepayments	27,500,000								27,500,000
Debt instrument, outstanding balance and cash balance threshold for mandatory prepayment, addition to threshold	21,300,000								21,300,000
Debt instrument, outstanding balance and cash balance threshold for mandatory prepayment, reduction to threshold	$ 2,500,000								2,500,000
Total proved asset coverage ratio	1.5
Secured debt asset coverage ratio	1.10
Debt to EBITDAX	4
Debt instrument, fair value								$ 16,651,000		$ 16,651,000
Successor | Exit Credit Facility (7) | Base Rate
Debt [Line Items]
Debt instrument, interest rate over variable rate	4.50%
Successor | Exit Credit Facility (7) | London Interbank Offered Rate (LIBOR)
Debt [Line Items]
Debt instrument, interest rate over variable rate	5.50%
Effective interest rate, debt instrument								6.39%		6.39%
Successor | 13.5% Convertible Second Lien Notes
Debt [Line Items]
Effective Interest Rate								24.70%
Debt instrument, principal amount	$ 40,000,000								$ 40,000,000
Total proved asset coverage ratio	1.10
Debt instrument interest rate	13.50%								13.50%
Debt instrument, conversion feature, percent of fully diluted new common stock	15.00%
Successor | 8.0% Second Lien Senior Secured Notes due 2018
Debt [Line Items]
Outstanding debt								$ 0		$ 0
Effective Interest Rate								0.00%
Debt instrument, principal amount								$ 0		$ 0
Debt instrument interest rate								8.00%		8.00%
Debt instrument, fair value								$ 0		$ 0
Successor | 8.875% Senior Notes due 2019
Debt [Line Items]
Outstanding debt								$ 0		0
Effective Interest Rate								0.00%
Debt instrument, principal amount								$ 0		$ 0
Debt instrument interest rate								8.875%		8.875%
Debt instrument, fair value								$ 0		$ 0
Successor | 8.875% Second Lien Senior Secured Notes due 2018
Debt [Line Items]
Outstanding debt								$ 0		0
Effective Interest Rate								0.00%
Debt instrument, principal amount								$ 0		$ 0
Debt instrument interest rate								8.875%		8.875%
Debt instrument, fair value								$ 0		$ 0
Successor | 5.0% Convertible Senior Notes due 2029
Debt [Line Items]
Outstanding debt								$ 0		0
Effective Interest Rate								0.00%
Debt instrument, principal amount								$ 0		$ 0
Debt instrument interest rate								5.00%		5.00%
Debt instrument, fair value								$ 0		$ 0
Successor | 5.0% Convertible Senior Notes due 2032
Debt [Line Items]
Outstanding debt								$ 0		0
Effective Interest Rate								0.00%
Debt instrument, principal amount								$ 0		$ 0
Debt instrument interest rate								5.00%		5.00%
Debt instrument, fair value								$ 0		$ 0
Successor | 5.0% Convertible Exchange Senior Notes due 2032
Debt [Line Items]
Outstanding debt								$ 0		0
Effective Interest Rate								0.00%
Debt instrument, principal amount								$ 0		$ 0
Debt instrument interest rate								5.00%		5.00%
Debt instrument, fair value								$ 0		$ 0
Gains on restructuring of debt										3,900,000
Converted amount										32,400,000
Successor | 3.25% Convertible Senior Notes due 2026
Debt [Line Items]
Outstanding debt								$ 0		0
Effective Interest Rate								0.00%
Debt instrument, principal amount								$ 0		$ 0
Debt instrument interest rate								3.25%		3.25%
Debt instrument, fair value								$ 0		$ 0
Successor | Second Lien Noteholders
Debt [Line Items]
Debt instrument, conversion feature, percent of common stock in reorganized company issued	98.00%
Outstanding debt	$ 175,000,000								$ 175,000,000
Successor | Unsecured Notes And Certain Other Unsecured Claims
Debt [Line Items]
Debt instrument, conversion feature, percent of common stock in reorganized company issued	2.00%
Predecessor
Debt [Line Items]
Outstanding debt											$ 465,507,000
Debt instrument, principal amount											$ 451,462,000
Common stock, par value (in dollar per share) | $ / shares											$ 0.20						$ 0.20
Discount rate						32.00%
Debt instrument, fair value						$ 78,700,000					$ 92,147,000
Net fair of the convert feature in additional paid in capital											12,677,000
Warrant issuance									$ 403,000		17,473,000
Predecessor | Senior Credit Facility
Debt [Line Items]
Outstanding debt											$ 25,387,000
Debt instrument, interest rate over variable rate	2.25%
Effective Interest Rate	5.80%								11.40%		5.10%
Accretion rate	2.00%
Debt instrument, principal amount											$ 27,000,000
Debt instrument, fair value											27,000,000
Predecessor | Exit Credit Facility (7)
Debt [Line Items]
Outstanding debt											$ 0
Effective Interest Rate									0.00%		0.00%
Debt instrument, principal amount											$ 0
Debt instrument, fair value											$ 0
Predecessor | 13.5% Convertible Second Lien Notes
Debt [Line Items]
Effective Interest Rate									0.00%		0.00%
Debt instrument, principal amount		$ 40,000,000
Debt instrument interest rate		13.50%
Debt instrument, conversion feature, percent of fully diluted new common stock		15.00%
Predecessor | 8.0% Second Lien Senior Secured Notes due 2018
Debt [Line Items]
Outstanding debt											$ 87,529,000
Effective Interest Rate											16.40%
Debt instrument, principal amount						$ 1,000					$ 100,000,000
Debt instrument interest rate						8.00%					8.00%		8.00%				8.00%
Number of units sold | unit						100,000
Warrant to purchase shares (in shares) | shares						48.84
Common stock, par value (in dollar per share) | $ / shares						$ 0.20
Debt instrument, fair value											$ 14,512,000
Debt discount						$ 21,300,000					11,000,000				$ 13,100,000
Net fair of the convert feature in additional paid in capital						15,800,000
Embedded derivative fair value						$ 5,900,000
Fair Value														$ 0	900,000
Predecessor | 8.875% Senior Notes due 2019
Debt [Line Items]
Outstanding debt				$ 116,800,000							$ 115,599,000
Effective Interest Rate											9.20%
Debt instrument, principal amount				$ 75,000,000							$ 116,828,000								$ 275,000,000
Debt instrument interest rate				8.875%							8.875%						8.875%		8.875%
Warrants to purchase common stock issued (in shares) | shares				38,250
Warrant to purchase shares (in shares) | shares				156.9
Common stock, par value (in dollar per share) | $ / shares				$ 0.20
Warrant exercise price (in dollars per share) | $ / shares				$ 1
Debt instrument, fair value											$ 9,346,000
Number of tranches | tranche				2
Aggregate principal amount retired				$ 158,200,000
Predecessor | 8.875% Second Lien Senior Secured Notes due 2018
Debt [Line Items]
Outstanding debt	$ 75,000,000								$ 75,000,000		91,364,000
Effective Interest Rate									0.00%
Debt instrument, principal amount				$ 75,000,000							$ 75,000,000
Debt instrument interest rate				8.875%							8.875%						8.875%
Warrant to purchase shares (in shares) | shares				156.9
Common stock, par value (in dollar per share) | $ / shares				$ 0.20
Warrant exercise price (in dollars per share) | $ / shares				$ 1
Debt instrument, fair value											$ 7,586,000
Number of tranches | tranche				2
Number of warrants to purchase common stock | shares				38,250
Gains on restructuring of debt											62,600,000
Warrant issuance											2,500,000
Gain (loss) on cancellation of debt	16,400,000
Predecessor | 8.875% Senior Notes Due 2019, Tranche Two
Debt [Line Items]
Aggregate principal amount retired				$ 76,500,000
Predecessor | 8.875% Convertible Senior Notes Due 2019, Tranche Two
Debt [Line Items]
Aggregate principal amount retired				81,700,000
Predecessor | 8.875% Second Lien Senior Secured Notes due 2018, tranche two
Debt [Line Items]
Debt instrument, principal amount				38,200,000
Predecessor | 8.875% Second Lien Senior Secured Notes due 2018, tranche one
Debt [Line Items]
Debt instrument, principal amount				$ 36,800,000
Predecessor | 5.0% Convertible Senior Notes due 2029
Debt [Line Items]
Outstanding debt											$ 6,692,000
Effective Interest Rate											5.00%
Debt instrument, principal amount											$ 6,692,000									$ 218,500,000
Debt instrument interest rate											5.00%						5.00%
Debt instrument, fair value											$ 67,000
Aggregate principal amount retired												$ 166,700,000
Debt repurchased																		$ 45,100,000
Predecessor | 5.0% Convertible Senior Notes due 2032
Debt [Line Items]
Outstanding debt											$ 95,882,000
Effective Interest Rate											8.60%
Accretion rate							2.00%
Debt instrument, principal amount			$ 8,500,000		$ 27,500,000						$ 98,664,000	166,300,000
Debt instrument interest rate											5.00%						5.00%
Debt instrument, fair value											$ 6,923,000
Debt discount											2,000,000	$ 7,500,000			1,700,000
Aggregate principal amount retired			17,100,000		$ 55,000,000
Aggregate principal amount outstanding excluding accretion											$ 94,200,000
Redemption price, percentage					100.00%
Effective interest rate, debt instrument											8.00%
Fair value of debt portion											$ 158,800,000
Equity component of debt											24,400,000
Predecessor | 5.0% Convertible Exchange Senior Notes due 2032
Debt [Line Items]
Outstanding debt											42,625,000				$ 6,300,000	$ 10,200,000
Debt instrument, principal amount	19,600,000		8,500,000		$ 27,500,000				$ 19,600,000		$ 26,849,000
Long-term debt	$ 32,400,000								32,400,000
Debt instrument interest rate											5.00%						5.00%
Debt instrument, fair value											$ 26,649,000
Net fair of the convert feature in additional paid in capital			$ 2,500,000		$ 10,100,000
Effective interest rate, debt instrument			1.40%		1.30%
Principal amount of notes			$ 17,100,000
Carrying amount of convertible notes			$ 14,800,000		$ 45,200,000
Predecessor | 3.25% Convertible Senior Notes due 2026
Debt [Line Items]
Outstanding debt											$ 429,000
Effective Interest Rate											3.30%
Debt instrument, principal amount											$ 429,000
Debt instrument interest rate											3.25%						3.25%
Debt instrument, fair value											$ 64,000
Costless Warrants For Common Stock | Successor | 13.5% Convertible Second Lien Notes
Debt [Line Items]
Term of warrant	10 years
Class of warrant, percent of new common stock	20.00%
Costless Warrants For Common Stock | Successor | Second Lien Noteholders
Debt [Line Items]
Term of warrant	10 years
Costless Warrants For Common Stock | Successor | Unsecured Notes And Certain Other Unsecured Claims
Debt [Line Items]
Term of warrant	10 years
Costless Warrants For Common Stock | Predecessor | 8.0% Second Lien Senior Secured Notes due 2018
Debt [Line Items]
Warrant exercise price (in dollars per share) | $ / shares						$ 4.664
On Or After April 1, 2018 | Successor | Exit Credit Facility (7)
Debt [Line Items]
Debt instrument, outstanding balance and cash balance threshold for mandatory prepayments	$ 7,500,000								$ 7,500,000
On Or After December 31, 2018 | Successor | Exit Credit Facility (7)
Debt [Line Items]
Total proved asset coverage ratio	2
After March 31, 2017 | Successor | Exit Credit Facility (7)
Debt [Line Items]
Secured debt asset coverage ratio	1.35
After March 31, 2017 | Successor | 13.5% Convertible Second Lien Notes
Debt [Line Items]
Total proved asset coverage ratio	1.35
After September 30, 2017 | Successor | Exit Credit Facility (7)
Debt [Line Items]
Secured debt asset coverage ratio	1.50
After September 30, 2017 | Successor | 13.5% Convertible Second Lien Notes
Debt [Line Items]
Total proved asset coverage ratio	1.50

Computations of Basic and Dilut

Computations of Basic and Diluted Income (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2015
Successor
Basic and Diluted loss per share:
Net loss applicable to common stock		$ (4,307)
Weighted-average shares of common stock outstanding (in shares)		7,184
Basic income (loss) per share (in dollars per share)		$ (0.60)
Dividends on convertible preferred stock		$ 0
Diluted net income (loss)		$ (4,307)
Common shares issuable upon assumed conversion of convertible preferred stock or dividends paid (in shares)		0
Common shares issuable upon assumed conversion of the 2026 Notes, 2029 Notes, 2032 Notes and 2032 Exchange Notes or interest paid (in shares)		0
Common shares issuable on assumed conversion of restricted stock, stock warrants and employee stock options were not included in the computation of diluted loss per common share (in shares)		0
Weighted average common shares outstanding—diluted (in shares)		7,184
Diluted income (loss) per share (in dollars per share)		$ (0.60)
Successor | Assumed Conversion of Preferred Stock
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)		0
Successor | Warrant [Member]
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)	3,750
Successor | 5.0% Convertible Senior Notes due 2029
Basic and Diluted loss per share:
Interest, discount, accretion and amortization of loan cost on convertible notes, net of tax		$ 0
Successor | 5.0% Convertible Senior Notes due 2032
Basic and Diluted loss per share:
Interest, discount, accretion and amortization of loan cost on convertible notes, net of tax		0
Successor | 5.0% Convertible Exchange Senior Notes due 2032
Basic and Diluted loss per share:
Interest, discount, accretion and amortization of loan cost on convertible notes, net of tax		0
Successor | 3.25% Convertible Senior Notes due 2026
Basic and Diluted loss per share:
Interest, discount, accretion and amortization of loan cost on convertible notes, net of tax		$ 0
Successor | 3.25% Convertible Senior Notes Due 2026, 5.0% Convertible Senior Notes Due 2029, 5.0% Convertible Senior Notes Due 2032, 5.0% Convertible Exchange Senior Notes Due 2032 | Assumed Conversion of Notes
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)		0
Successor | 13.50% Convertible Second Lien Term Loan (8) | Assumed Conversion of Notes
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)	1,875
Successor | Unsecured Claim Holders | Assumed Conversion of Notes
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)	39
Successor | Restricted Stock, Stock Warrants and Employee Stock Options | Assumed Conversion of Restricted Stock, Stock Warrants and Employee Stock Options
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)		0
Successor | Restricted Stock | Assumed Conversion of Restricted Stock, Stock Warrants and Employee Stock Options
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)	24
Predecessor
Basic and Diluted loss per share:
Net loss applicable to common stock			$ 358,707	$ (409,880)
Weighted-average shares of common stock outstanding (in shares)			77,236	56,315
Basic income (loss) per share (in dollars per share)			$ 4.64	$ (7.28)
Dividends on convertible preferred stock			$ 2,990	$ 0
Diluted net income (loss)			$ 363,339	$ (409,880)
Common shares issuable upon assumed conversion of convertible preferred stock or dividends paid (in shares)			14,966	0
Common shares issuable upon assumed conversion of the 2026 Notes, 2029 Notes, 2032 Notes and 2032 Exchange Notes or interest paid (in shares)			5,911	0
Common shares issuable on assumed conversion of restricted stock, stock warrants and employee stock options were not included in the computation of diluted loss per common share (in shares)			256	0
Weighted average common shares outstanding—diluted (in shares)			98,369	56,315
Diluted income (loss) per share (in dollars per share)			$ 3.69	$ (7.28)
Predecessor | Assumed Conversion of Preferred Stock
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)			0	20,145
Predecessor | Warrant [Member]
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)			0	0
Predecessor | 5.0% Convertible Senior Notes due 2029
Basic and Diluted loss per share:
Interest, discount, accretion and amortization of loan cost on convertible notes, net of tax			$ 63	$ 0
Predecessor | 5.0% Convertible Senior Notes due 2032
Basic and Diluted loss per share:
Interest, discount, accretion and amortization of loan cost on convertible notes, net of tax			1,548	0
Predecessor | 5.0% Convertible Exchange Senior Notes due 2032
Basic and Diluted loss per share:
Interest, discount, accretion and amortization of loan cost on convertible notes, net of tax			28	0
Predecessor | 3.25% Convertible Senior Notes due 2026
Basic and Diluted loss per share:
Interest, discount, accretion and amortization of loan cost on convertible notes, net of tax			$ 3	$ 0
Predecessor | 3.25% Convertible Senior Notes Due 2026, 5.0% Convertible Senior Notes Due 2029, 5.0% Convertible Senior Notes Due 2032, 5.0% Convertible Exchange Senior Notes Due 2032 | Assumed Conversion of Notes
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)			0	15,728
Predecessor | 13.50% Convertible Second Lien Term Loan (8) | Assumed Conversion of Notes
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)			0	0
Predecessor | Unsecured Claim Holders | Assumed Conversion of Notes
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)			0	0
Predecessor | Restricted Stock, Stock Warrants and Employee Stock Options | Assumed Conversion of Restricted Stock, Stock Warrants and Employee Stock Options
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)			0	14,081
Predecessor | Restricted Stock | Assumed Conversion of Restricted Stock, Stock Warrants and Employee Stock Options
Basic and Diluted loss per share:
Antidilutive shares excluded from computation of EPS (in shares)			0	0

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	Oct. 12, 2016	Dec. 31, 2016	Dec. 31, 2015
Successor
Income Tax [Line Items]
Statutory income tax rate		35.00%
Operating loss carryforward, cancellation of indebtedness income		$ 353,700
Deferred tax asset, valuation allowance		125,164
Tax credit carryforward, amount		1,100
Predecessor
Income Tax [Line Items]
Statutory income tax rate			35.00%
Deferred tax asset, valuation allowance			$ 500,448
Domestic Tax Authority
Income Tax [Line Items]
Net operating loss carry-forwards		643,900
Operating loss carryforward, available to offset future income		$ 12,600
Domestic Tax Authority | Successor
Income Tax [Line Items]
Decrease in operating loss carryforwards	$ 631,300
LOUISIANA | State and Local Jurisdiction | Successor
Income Tax [Line Items]
Decrease in operating loss carryforwards	274,500
MISSISSIPPI | State and Local Jurisdiction | Successor
Income Tax [Line Items]
Decrease in operating loss carryforwards	$ 100,500

Reconciliation of Statutory Inc

Reconciliation of Statutory Income Tax Rate to Income Loss Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2015
Successor
Income Tax [Line Items]
Tax at U.S. statutory income tax	$ (1,508)
Book restructuring gain	0
Valuation allowance	1,055
State income taxes-net of federal benefit	(111)
Nondeductible expenses and other	564
Total tax (expense) benefit	$ 0
Predecessor
Income Tax [Line Items]
Tax at U.S. statutory income tax		$ 129,481	$ 167,799
Book restructuring gain		(146,770)	0
Valuation allowance		(5,003)	(185,698)
State income taxes-net of federal benefit		16,985	22,110
Nondeductible expenses and other		5,307	(4,211)
Total tax (expense) benefit		$ 0	$ 0

Schedule Of Deferred Tax (Liabi

Schedule Of Deferred Tax (Liabilities) Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Successor
Noncurrent deferred tax assets:
Operating loss carry-forwards	$ 3,033
State Tax NOL and Credits	1,320
Statutory depletion carry-forward	7,035
AMT tax credit carry-forward	1,052
Compensation	244
Contingent liabilities and other	508
Derivative financial instruments	0
Debt discount	0
Property and equipment	112,274
Total gross noncurrent deferred tax assets	125,466
Less valuation allowance	(125,164)
Net noncurrent deferred tax assets	302
Noncurrent deferred tax liabilities:
Bond discount	(302)
Debt discount	0
Total non-current deferred tax liabilities	(302)
Net non-current deferred tax asset	$ 0
Predecessor
Noncurrent deferred tax assets:
Operating loss carry-forwards		$ 286,441
State Tax NOL and Credits		12,383
Statutory depletion carry-forward		7,035
AMT tax credit carry-forward		1,052
Compensation		3,040
Contingent liabilities and other		627
Derivative financial instruments		10
Debt discount		17,652
Property and equipment		172,313
Total gross noncurrent deferred tax assets		500,553
Less valuation allowance		(500,448)
Net noncurrent deferred tax assets		105
Noncurrent deferred tax liabilities:
Bond discount		(105)
Debt discount		0
Total non-current deferred tax liabilities		(105)
Net non-current deferred tax asset		$ 0

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	Dec. 19, 2016	Oct. 12, 2016	Mar. 28, 2016	Dec. 18, 2015	Dec. 31, 2015	Aug. 31, 2013	Apr. 30, 2013	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2006	Jul. 25, 2016	Oct. 14, 2015	Sep. 08, 2015
Series E Cumulative Preferred Stock
Stockholders Equity [Line Items]
Preferred stock, dividend rate, percentage		10.00%
Preferred stock, shares outstanding (in shares)		2,521							2,521
Preferred stock, liquidation preference (in dollars per share)							$ 10
Preferred stock, liquidation preference, per annum (in dollars per share)							1
Preferred share par value (in dollars per share)							1
Preferred stock (return of) dividends										$ (95,800,000)
Conversion of stock, shares converted (in shares)					95,000
Series B Cumulative Convertible Preferred Stock
Stockholders Equity [Line Items]
Preferred stock, dividend rate, percentage		5.375%										5.375%
Preferred stock, shares outstanding (in shares)		1,483,441							1,483,441
Preferred stock dividend in arrears		$ 2,000,000
Preferred stock, shares issued (in shares)												2,250,000
Preferred stock, liquidation preference (in dollars per share)												$ 50
Aggregate preferred stock liquidation preference												$ 82,500,000
Convertible preferred stock shares exchanged (in shares)				758,434
Series C Cumulative Preferred Stock
Stockholders Equity [Line Items]
Preferred stock, dividend rate, percentage		10.00%
Preferred stock, shares outstanding (in shares)		3,060							3,060
Preferred stock dividend in arrears										3,900,000
Preferred stock, liquidation preference (in dollars per share)							$ 25,000
Convertible preferred stock shares exchanged (in shares)				1,274,932
Preferred stock							$ 110,000,000
Net proceeds of preferred stock							$ 105,400,000
Depositary Shares
Stockholders Equity [Line Items]
Number of preferred stock sold (in shares)				3,648,803		5,200,000	4,400,000
Preferred stock sold, percent ownership				0.10%		0.10%	0.10%
American Depository Share
Stockholders Equity [Line Items]
Preferred stock, liquidation preference (in dollars per share)						$ 25	$ 25
Series D Cumulative Preferred Stock
Stockholders Equity [Line Items]
Preferred stock, dividend rate, percentage		9.75%
Preferred stock, shares outstanding (in shares)		3,621							3,621
Preferred stock dividend in arrears										$ 4,600,000
Preferred stock, liquidation preference (in dollars per share)						$ 25,000
Convertible preferred stock shares exchanged (in shares)				1,463,759
Preferred stock						$ 130,000,000
Net proceeds of preferred stock						$ 124,900,000
Preferred share par value (in dollars per share)						$ 1
Conversion One | Series E Cumulative Preferred Stock
Stockholders Equity [Line Items]
Convertible preferred stock shares exchanged (in shares)				910,112
Conversion One | Series B Cumulative Convertible Preferred Stock
Stockholders Equity [Line Items]
Convertible preferred stock shares exchanged (in shares)				758,434
Conversion Two | Series E Cumulative Preferred Stock
Stockholders Equity [Line Items]
Convertible preferred stock shares exchanged (in shares)				1,274,932
Conversion Two | Series C Cumulative Preferred Stock
Stockholders Equity [Line Items]
Convertible preferred stock shares exchanged (in shares)				1,274,932
Conversion Three | Series E Cumulative Preferred Stock
Stockholders Equity [Line Items]
Convertible preferred stock shares exchanged (in shares)				1,463,759
Conversion Three | Series D Cumulative Preferred Stock
Stockholders Equity [Line Items]
Convertible preferred stock shares exchanged (in shares)				1,463,759
Successor
Stockholders Equity [Line Items]
Common stock, shares outstanding (in shares)								9,108,826		9,108,826
Common stock, shares authorized (in shares)								75,000,000		75,000,000
Common stock, par value (in dollar per share)		$ 0.01						$ 0.01	$ 0.01	$ 0.01
Common stock issued in public offering (in shares)		6,875,002
Equity offering		$ 27,900,000						$ 23,750,000
Debt instrument, principal amount								57,821,000		$ 57,821,000
Warrant issuance		$ 11,000,000						10,964,000
Long-term debt								75,315,000		75,315,000
Preferred stock								0		$ 0
Preferred stock (return of) dividends								$ 0
Successor | Private Placement [Member]
Stockholders Equity [Line Items]
Shares issued in transaction (in shares)	2,272,727
Common stock, price (in dollars per share)	$ 11
Consideration received from sale of stock	$ 23,800,000
Predecessor
Stockholders Equity [Line Items]
Common stock, shares outstanding (in shares)					63,910,300						63,910,300
Common stock, shares authorized (in shares)					150,000,000						150,000,000
Common stock, par value (in dollar per share)			$ 0.20		$ 0.20						$ 0.20
Equity offering											$ 47,480,000
Debt instrument, principal amount					$ 451,462,000						451,462,000
Warrant issuance									$ 403,000		17,473,000
Preferred stock dividend in arrears									25,800,000		10,500,000
Preferred stock (return of) dividends									11,237,000		(69,544,000)
Preferred stock dividends in arrears									15,300,000		10,500,000
Preferred stock dividends									$ 4,100,000		(81,200,000)
Preferred stock dividend payment timing difference											$ 1,200,000
Predecessor | Series E Cumulative Preferred Stock
Stockholders Equity [Line Items]
Preferred stock, dividend rate, percentage			10.00%						10.00%
Preferred stock, shares outstanding (in shares)		1,032,610			3,553				1,032,610		3,553
Preferred stock, shares issued (in shares)					3,553						3,553
Preferred stock					$ 4,000						$ 4,000
Predecessor | Series B Cumulative Convertible Preferred Stock
Stockholders Equity [Line Items]
Preferred stock, dividend rate, percentage			5.375%						5.375%
Preferred stock, shares outstanding (in shares)					1,491,459						1,491,459
Preferred stock, shares issued (in shares)					1,491,459						1,491,459
Preferred stock					$ 1,491,000						$ 1,491,000
Predecessor | Series C Cumulative Preferred Stock
Stockholders Equity [Line Items]
Preferred stock, dividend rate, percentage			10.00%						10.00%
Preferred stock, shares outstanding (in shares)					3,125						3,125
Preferred stock, shares issued (in shares)					3,125						3,125
Preferred stock					$ 3,000						$ 3,000
Predecessor | Series D Cumulative Preferred Stock
Stockholders Equity [Line Items]
Preferred stock, dividend rate, percentage			9.75%						9.75%
Preferred stock, shares outstanding (in shares)					3,736						3,736
Preferred stock, shares issued (in shares)					3,736						3,736
Preferred stock					$ 4,000						$ 4,000
Predecessor | Conversion of Series E Cumulative Convertible Preferred Stock to Common Stock
Stockholders Equity [Line Items]
Preferred stock conversions (in shares)									5,200,000
Management Incentive Plan | Successor
Stockholders Equity [Line Items]
Shares issued under management incentive plan (in shares)		1,000,002
Vesting period		3 years
Predecessor Company's Former Second Lien Note Holders | Successor
Stockholders Equity [Line Items]
Common stock issued in public offering (in shares)		5,757,500
Predecessor Company's Former Unsecured Note Holders And Holders Of General Unsecured Claims | Successor
Stockholders Equity [Line Items]
Common stock issued in public offering (in shares)		117,500
Shares issued (in shares)								78,597		78,597
Warrants To Purchase Common Stock | Predecessor Company's Former Unsecured Note Holders And Holders Of General Unsecured Claims | Successor
Stockholders Equity [Line Items]
Value of warrants issued		$ 2,500,000							$ 2,500,000
Warrants to purchase common stock issued (in shares)		1,250,000						836,158	1,250,000	836,158
13.5% Convertible Second Lien Notes | Successor
Stockholders Equity [Line Items]
Debt instrument, principal amount		$ 40,000,000							$ 40,000,000
Debt instrument interest rate		13.50%							13.50%
13.5% Convertible Second Lien Notes | Predecessor
Stockholders Equity [Line Items]
Debt instrument, principal amount													$ 40,000,000
Debt instrument interest rate													13.50%
13.5% Convertible Second Lien Notes | Warrants To Purchase Common Stock | Successor
Stockholders Equity [Line Items]
Warrants to purchase common stock issued (in shares)		2,499,999							2,499,999
Embedded derivative fair value		$ 10,200,000							$ 10,200,000
Beneficial conversion feature, fair value		800,000
5.0% Convertible Exchange Senior Notes due 2032 | Successor
Stockholders Equity [Line Items]
Debt instrument, principal amount								$ 0		$ 0
Debt instrument interest rate								5.00%		5.00%
5.0% Convertible Exchange Senior Notes due 2032 | Predecessor
Stockholders Equity [Line Items]
Debt instrument, principal amount		19,600,000			$ 26,849,000				19,600,000		$ 26,849,000			$ 8,500,000	$ 27,500,000
Debt instrument interest rate			5.00%		5.00%						5.00%
Long-term debt		$ 32,400,000							$ 32,400,000
5.0% Convertible Exchange Senior Notes due 2032 | Predecessor | Conversion of 2032 Exchange Notes to Common Stock
Stockholders Equity [Line Items]
Preferred stock conversions (in shares)									9,800,000
Common Stock
Stockholders Equity [Line Items]
Conversion of stock, shares issued (in shares)					476,800
Common Stock | Successor
Stockholders Equity [Line Items]
Common stock issued in public offering (in shares)								2,273,000
Equity offering								$ 23,000
Common Stock | Predecessor
Stockholders Equity [Line Items]
Common stock issued in public offering (in shares)											12,000,000
Equity offering											$ 2,400,000
Preferred stock conversions (in shares)									6,102,000		477,000
Vest immediately | Management Incentive Plan | Successor
Stockholders Equity [Line Items]
Shares issued under management incentive plan (in shares)		271,739
Vest over three years | Management Incentive Plan | Successor
Stockholders Equity [Line Items]
Shares issued under management incentive plan (in shares)		273,098

Summary of Gains and Losses on

Summary of Gains and Losses on Derivatives (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2015	Oct. 11, 2016	Mar. 28, 2016	Mar. 12, 2015
Successor
Derivative [Line Items]
Gain on derivatives not designated as hedges	$ 0
Successor | Commodity Derivatives
Derivative [Line Items]
Gain on derivatives not designated as hedges	$ 0
Predecessor
Derivative [Line Items]
Gain on derivatives not designated as hedges		$ 30	$ 7,367
Predecessor | Commodity Derivatives
Derivative [Line Items]
Gain on derivatives not designated as hedges		$ 30	$ 7,367
8.0% Second Lien Senior Secured Notes due 2018 | Successor
Derivative [Line Items]
Debt instrument interest rate	8.00%
8.0% Second Lien Senior Secured Notes due 2018 | Predecessor
Derivative [Line Items]
Debt instrument interest rate			8.00%	8.00%	8.00%	8.00%

Outstanding Commodity Derivativ

Outstanding Commodity Derivative Contracts (Detail) - Predecessor - Not Designated as Hedging Instrument $ in Thousands	12 Months Ended
	Dec. 31, 2015USD ($)MMBTU / dMMBTU	Dec. 31, 2016$ / MMBTU
Commodity Derivatives
Derivative [Line Items]
Fair Value | $	$ (30)
Natural Gas Calls | 2016
Derivative [Line Items]
Daily Volume | MMBTU / d	20,000
Total Volume | MMBTU	7,320,000
Fair Value | $	$ (30)
Natural Gas Calls | Minimum | 2016
Derivative [Line Items]
Fixed price, calls | $ / MMBTU		5.05
Natural Gas Calls | Maximum | 2016
Derivative [Line Items]
Fixed price, calls | $ / MMBTU		5.06

Derivative Assets and Liabiliti

Derivative Assets and Liabilities Recorded at Fair Value (Detail) - Predecessor $ in Thousands	Dec. 31, 2015USD ($)
Derivative [Line Items]
Current Liabilities Commodity Derivatives	$ (30)
Commodity Derivatives | Not Designated as Hedging Instrument
Derivative [Line Items]
Current Assets Commodity Derivatives	0
Non-current Assets Commodity Derivatives	0
Current Liabilities Commodity Derivatives	(30)
Non-current Liabilities Commodity Derivatives	0
Total	(30)
Commodity Derivatives | Level 1 | Not Designated as Hedging Instrument
Derivative [Line Items]
Current Assets Commodity Derivatives	0
Non-current Assets Commodity Derivatives	0
Current Liabilities Commodity Derivatives	0
Non-current Liabilities Commodity Derivatives	0
Total	0
Commodity Derivatives | Level 2 | Not Designated as Hedging Instrument
Derivative [Line Items]
Current Assets Commodity Derivatives	0
Non-current Assets Commodity Derivatives	0
Current Liabilities Commodity Derivatives	(30)
Non-current Liabilities Commodity Derivatives	0
Total	(30)
Commodity Derivatives | Level 3 | Not Designated as Hedging Instrument
Derivative [Line Items]
Current Assets Commodity Derivatives	0
Non-current Assets Commodity Derivatives	0
Current Liabilities Commodity Derivatives	0
Non-current Liabilities Commodity Derivatives	0
Total	$ 0

Timing of Future Payments Oblig

Timing of Future Payments Obligations (Detail) - Successor - USD ($) $ in Thousands	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2015
Commitment And Contingencies [Line Items]
Debt, Total	$ 75,315
Debt, 2017	0
Debt, 2018	16,651
Debt, 2019	58,664
Debt, 2020	0
Debt, 2020 and After	0
Operations contracts, Total	855
Operations contracts, 2017	799
Operations contracts, 2018	20
Operations contracts, 2019	20
Operations contracts, 2020	16
Operations contracts, 2020 and After	0
Contractual Obligations, Total	82,166
Contractual Obligations, 2017	1,692
Contractual Obligations, 2018	18,181
Contractual Obligations, 2019	60,224
Contractual Obligations, 2020	1,556
Contractual Obligations, 2020 and After	513
Liability for dismantlement, abandonment and restoration costs of oil and natural gas properties	2,933	$ 2,897	$ 2,900
Office Space Leases
Commitment And Contingencies [Line Items]
Total Lease future payments	5,919
Leases, 2017	816
Leases, 2018	1,510
Leases, 2019	1,540
Leases, 2020	1,540
Leases, 2020 and After	513
Office Equipment Leases
Commitment And Contingencies [Line Items]
Total Lease future payments	77
Leases, 2017	77
Leases, 2018	0
Leases, 2019	0
Leases, 2020	0
Leases, 2020 and After	$ 0

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) $ in Millions	Jun. 10, 2015USD ($)Shipment	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Commitment And Contingencies [Line Items]
Purchase obligation agreement, period	18 months
Successor
Commitment And Contingencies [Line Items]
Rent expense		$ 1.5
Defined contribution plan, employer contributions		$ 0.1	$ 0.5
Predecessor
Commitment And Contingencies [Line Items]
Rent expense			1.5
Purchase obligation	$ 11.4		$ 6.8
Purchase obligation of material for each month	$ 0.6
Number of shipments delivery taken | Shipment	7

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - Predecessor $ in Millions	May 31, 2015USD ($)
Board of Directors Chairman
Related Party Transaction [Line Items]
Billings to related parties	$ 0.3
Revenue distributions	0.1
Malloy Energy Company LLC
Related Party Transaction [Line Items]
Billings to related parties	0.2
Revenue distributions	$ 0.2

Dispositions and Acquisitions -

Dispositions and Acquisitions - Additional Information (Detail) - USD ($) $ in Millions	Dec. 13, 2016	Sep. 04, 2015	Dec. 31, 2015
Eagle Ford Shale Trend
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Purchase and sell agreement amount		$ 118
Net proceeds from sale of asset		$ 110
Gain on sale of asset			$ 49.7
Oil And Gas Reserves Located at Caddo Parish, Louisiana
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Purchase and sell agreement amount	$ 1
Net proceeds from sale of asset	$ 0.8

Subsequent Events (Details)

Subsequent Events (Details) - Natural Gas Put and Call Option Transactions With BP Energy Company - Subsequent Event MMBTU in Thousands	2 Months Ended
	Mar. 02, 2017MMBTU$ / MMBTU
Subsequent Event [Line Items]
Put and call option transactions (in Mmbtu) | MMBTU	12
Minimum
Subsequent Event [Line Items]
Delivery price (in USD per Mmbtu)	3
Maximum
Subsequent Event [Line Items]
Delivery price (in USD per Mmbtu)	3.60

Supplemental Information (Detai

Supplemental Information (Details)	12 Months Ended
	Dec. 31, 2016$ / MMBTU	Dec. 31, 2016$ / Mcf	Dec. 31, 2016$ / bbl	Dec. 31, 2015$ / Mcf$ / bbl	Dec. 31, 2014$ / Mcf$ / bbl
Successor | Oil (per Bbl)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Index price used to calculate reserves			42.75
Successor | Natural gas (per MMBtu)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Index price used to calculate reserves	2.48	2.48
Predecessor | Oil (per Bbl)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Index price used to calculate reserves				50.28	94.99
Predecessor | Natural gas (per MMBtu)
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Index price used to calculate reserves | $ / Mcf				2.58	4.35

Supplemental Information - Capi

Supplemental Information - Capitalized Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2015
Successor
Capitalized Costs Relating to Oil and Gas Producing Activities, by Geographic Area [Line Items]
Proved properties	$ 61,040
Unproved properties	24,102
Gross oil and natural gas properties	85,142
Less: accumulated depreciation, depletion and amortization	(3,954)
Net oil and natural gas properties	$ 81,188
Predecessor
Capitalized Costs Relating to Oil and Gas Producing Activities, by Geographic Area [Line Items]
Proved properties		$ 868,703	$ 866,802
Unproved properties		107,318	107,210
Gross oil and natural gas properties		976,021	974,012
Less: accumulated depreciation, depletion and amortization		(912,252)	(904,438)
Net oil and natural gas properties		$ 63,769	$ 69,574

Supplemental Information - Cost

Supplemental Information - Costs Incurred (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 12, 2016	Dec. 31, 2016	Dec. 31, 2015
Successor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Unproved	$ 33
Proved	0
Exploration	0
Development	4,284
Costs incurred in oil and natural gas property acquisition, exploration and development activities	$ 4,317
Asset retirement obligation incurred			$ 0
Predecessor
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Unproved		$ 450		$ 5,166
Proved		0		0
Exploration		498		9,668
Development		1,560		78,805
Costs incurred in oil and natural gas property acquisition, exploration and development activities		$ 2,508		93,639
Asset retirement obligation incurred				$ 100

Supplemental Information - Net

Supplemental Information - Net Proved Oil and Natural Gas Reserves (Details) MMcf in Thousands, MBbls in Thousands	12 Months Ended
	Dec. 31, 2016MMcfe	Dec. 31, 2016MMcfeMMcf	Dec. 31, 2016MMcfeMBbls	Dec. 31, 2016MMcfeMMBoe	Dec. 31, 2015MMcfe	Dec. 31, 2015MMcfeMMcf	Dec. 31, 2015MMcfeMBbls	Dec. 31, 2014MMcfe	Dec. 31, 2014MMcfeMMcf	Dec. 31, 2014MMcfeMBbls	Dec. 31, 2016MMcf	Dec. 31, 2016MBbls	Dec. 31, 2015MMcf	Dec. 31, 2015MBbls	Dec. 31, 2014MMcf	Dec. 31, 2014MBbls	Dec. 31, 2013MMcfe	Dec. 31, 2013MMcf	Dec. 31, 2013MBbls
Successor
Proved Developed and Undeveloped Reserves [Roll Forward]
Net proved reserves at beginning of period		31,851	3,834
Revisions of previous estimates		(4,426)	(543)
Extensions, discoveries and improved recovery		264,166	0
Purchases of minerals in place		0	0
Sales of minerals in place		2	0
Production		(5,555)	(476)
Net proved reserves at end of period		286,038	2,815			31,851	3,834
Net proved developed reserves:											21,872	2,815	31,851	3,834
Net proved undeveloped reserves:											264,166	0	0	0
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Net proved reserves at beginning of period	54,852,000
Revisions of previous estimates	(7,683,000)
Extensions, discoveries and improved recovery	264,166,000
Purchases of minerals in place	0
Sales of minerals in place	2,000
Production	(8,410,000)
Net proved reserves at end of period	302,927,000				54,852,000
Net proved developed reserves:	44,432,000	44,432,000	44,432,000	44,432,000	54,852,000	54,852,000	54,852,000
Net proved undeveloped reserves:	258,495,000	258,495,000	258,495,000	258,495,000	0	0	0
Predecessor
Proved Developed and Undeveloped Reserves [Roll Forward]
Net proved reserves at beginning of period		31,851	3,834			104,832	28,143		329,616	20,431
Revisions of previous estimates						(62,437)	(15,737)		(108,029)	(1,378)
Extensions, discoveries and improved recovery						6,196	1,207		1,655	16,452
Purchases of minerals in place						0	0		0	0
Sales of minerals in place						(8,073)	(8,551)		(101,810)	(5,669)
Production						(8,667)	(1,228)		(16,600)	(1,693)
Net proved reserves at end of period						31,851	3,834		104,832	28,143
Net proved developed reserves:													31,851	3,834	60,708	10,719		117,184	10,100
Net proved undeveloped reserves:													0	0	44,124	17,424		212,432	10,331
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Net proved reserves at beginning of period	54,852,000				273,690,000			452,202,000
Revisions of previous estimates					(156,858,000)			(116,298,000)
Extensions, discoveries and improved recovery					13,440,000			100,368,000
Purchases of minerals in place					0			0
Sales of minerals in place					(59,382,000)			(135,822,000)
Production					(16,038,000)			(26,760,000)
Net proved reserves at end of period					54,852,000			273,690,000
Net proved developed reserves:					54,852,000	54,852,000	54,852,000	125,022,000	125,022,000	125,022,000							177,786,000
Net proved undeveloped reserves:					0	0	0	148,668,000	148,668,000	148,668,000							274,416,000
Haynesville Shale Trend | Successor
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Extensions, discoveries and improved recovery	264.2
Eagle Ford Shale Trend | Successor
Proved Developed and Undeveloped Reserve (Energy) [Roll Forward]
Sales of minerals in place | MMBoe				(59.4)

Supplemental Information - Stan

Supplemental Information - Standardized Measures (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)$ / MMBTU	Dec. 31, 2016USD ($)$ / Mcf	Dec. 31, 2016USD ($)$ / bbl	Dec. 31, 2015USD ($)$ / Mcf$ / bbl	Dec. 31, 2014USD ($)$ / Mcf$ / bbl	Dec. 31, 2013USD ($)
Successor
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Future revenues	$ 595,745	$ 595,745	$ 595,745
Future lease operating expenses and production taxes	(213,030)	(213,030)	(213,030)
Future development costs	(222,892)	(222,892)	(222,892)
Future income tax expense	(456)	(456)	(456)
Future net cash flows	159,367	159,367	159,367
10% annual discount for estimated timing of cash flows	(102,445)	(102,445)	(102,445)
Standardized measure of discounted future net cash flows	56,922	56,922	56,922	$ 69,895
Accrued abandonment cost	$ 10,300	$ 10,300	$ 10,300
Predecessor
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Future revenues				245,411	$ 2,984,283
Future lease operating expenses and production taxes				(130,455)	(998,874)
Future development costs				(20,146)	(656,659)
Future income tax expense				0	(14,531)
Future net cash flows				94,810	1,314,219
10% annual discount for estimated timing of cash flows				(24,915)	(669,483)
Standardized measure of discounted future net cash flows				69,895	$ 644,736	$ 468,147
Accrued abandonment cost				$ 10,100
Natural gas (per Mcf) | Successor
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Index price used to calculate reserves	2.48	2.48
Natural gas (per Mcf) | Predecessor
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Index price used to calculate reserves | $ / Mcf				2.58	4.35
Oil (per Bbl) | Successor
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Index price used to calculate reserves | $ / bbl			42.75
Oil (per Bbl) | Predecessor
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Index price used to calculate reserves | $ / bbl				50.28	94.99

Supplemental Information - Chan

Supplemental Information - Changes in Standardized Measures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Successor
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves [Roll Forward]
Balance, beginning of year	$ 69,895
Net changes in prices and production costs related to future production	(20,442)
Sales and transfers of oil and natural gas produced, net of production costs	(15,826)
Net change due to revisions in quantity estimates	(8,630)
Net change due to extensions, discoveries and improved recovery	25,638
Net change due to purchases and sales of minerals in place	648
Changes in future development costs	2,102
Previously estimated development cost incurred in period	0
Net change in income taxes	(164)
Accretion of discount	6,990
Change in production rates (timing) and other	(3,289)
Net increase (decrease) in standardized measures	(12,973)
Balance, end of year	56,922	$ 69,895
Predecessor
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves [Roll Forward]
Balance, beginning of year	$ 69,895	644,736	$ 468,147
Net changes in prices and production costs related to future production		(535,696)	68,605
Sales and transfers of oil and natural gas produced, net of production costs		(58,917)	(169,114)
Net change due to revisions in quantity estimates		(132,832)	(256,200)
Net change due to extensions, discoveries and improved recovery		24,895	377,823
Net change due to purchases and sales of minerals in place		(158,391)	(2,511)
Changes in future development costs		324,624	153,532
Previously estimated development cost incurred in period		0	17,191
Net change in income taxes		5,848	(1,727)
Accretion of discount		65,058	47,227
Change in production rates (timing) and other		(109,430)	(58,237)
Net increase (decrease) in standardized measures		(574,841)	176,589
Balance, end of year		$ 69,895	$ 644,736

Uncategorized Items - gdp-20161

Label	Element	Value
Treasury Stock [Member]
Stockholders' Equity, Change in Reporting Entity	us-gaap_StockholdersEquityChangeInReportingEntity	$ 46,000
Stockholders' Equity Note, Changes in Capital Structure, Subsequent Changes to Number of Common Shares	us-gaap_StockholdersEquityNoteChangesInCapitalStructureSubsequentChangesToNumberOfCommonShares	221,000
Retained Earnings [Member]
Stockholders' Equity, Change in Reporting Entity	us-gaap_StockholdersEquityChangeInReportingEntity	$ 1,117,945,000
Common Stock [Member]
Stockholders' Equity, Change in Reporting Entity	us-gaap_StockholdersEquityChangeInReportingEntity	$ (15,995,000)
Stockholders' Equity Note, Changes in Capital Structure, Subsequent Changes to Number of Common Shares	us-gaap_StockholdersEquityNoteChangesInCapitalStructureSubsequentChangesToNumberOfCommonShares	(79,976,000)
Additional Paid-in Capital [Member]
Stockholders' Equity, Change in Reporting Entity	us-gaap_StockholdersEquityChangeInReportingEntity	$ (1,100,503,000)
Preferred Stock [Member]
Stockholders' Equity, Change in Reporting Entity	us-gaap_StockholdersEquityChangeInReportingEntity	$ (1,493,000)
Stockholders' Equity Note, Changes in Capital Structure, Subsequent Changes to Number of Common Shares	us-gaap_StockholdersEquityNoteChangesInCapitalStructureSubsequentChangesToNumberOfCommonShares	(1,493,000)