Goodrich Petroleum 10-Q 6 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 31, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'GDP	'
Entity Registrant Name	'GOODRICH PETROLEUM CORP	'
Entity Central Index Key	'0000943861	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	44,434,222

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
CURRENT ASSETS:	'	'
Cash and cash equivalents	$2,215	$49,220
Restricted cash	51,816	51,816
Accounts receivable, trade and other, net of allowance	8,844	3,113
Accrued oil and natural gas revenue	20,975	19,455
Fair value of oil and natural gas derivatives	7,669	6,187
Inventory	1,318	2,076
Prepaid expenses and other	1,428	1,278
Total current assets	94,265	133,145
PROPERTY AND EQUIPMENT:	'	'
Oil and natural gas properties (successful efforts method)	2,092,546	1,838,220
Furniture, fixtures and equipment	7,589	6,960
Property, Plant and Equipment, Gross, Total	2,100,135	1,845,180
Less: Accumulated depletion, depreciation and amortization	-1,200,297	-1,021,863
Net property and equipment	899,838	823,317
Fair value of oil and natural gas derivatives	2,167	1,396
Deferred tax assets	2,599	665
Deferred financing cost and other	13,340	15,690
TOTAL ASSETS	1,012,209	974,213
CURRENT LIABILITIES:	'	'
Accounts payable	93,076	50,551
Accrued liabilities	64,873	48,603
Accrued abandonment costs	149	99
Deferred tax liabilities current	2,599	665
Fair value of oil and natural gas derivatives	0	4,341
Current portion of debt	45,124	49,663
Total current liabilities	205,821	153,922
Long-term debt	564,340	435,866
Accrued abandonment costs	21,972	20,757
Fair value of oil and natural gas derivatives	1,347	2,371
Transportation obligation	4,142	4,774
Deferred tax liabilities noncurrent	0	0
Total liabilities	797,622	617,690
Commitments and contingencies (See Note 7)	'	'
STOCKHOLDERS’ EQUITY:	'	'
Common stock: $0.20 par value, 100,000,000 shares authorized; issued and outstanding 44,433,930 and 44,258,824 shares, respectively	8,887	8,852
Additional paid in capital	1,064,008	1,056,378
Retained earnings (accumulated deficit)	-860,567	-710,966
Total stockholders’ equity	214,587	356,523
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	1,012,209	974,213
Series B Convertible Preferred Stock	'	'
STOCKHOLDERS’ EQUITY:	'	'
Preferred stock	2,250	2,250
Series C Cumulative Preferred Stock	'	'
STOCKHOLDERS’ EQUITY:	'	'
Preferred stock	4	4
Series D Cumulative Preferred Stock	'	'
STOCKHOLDERS’ EQUITY:	'	'
Preferred stock	$5	$5

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, par value	$1	$1
Common stock, par value	$0.20	$0.20
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	44,433,930	44,433,930
Common stock, shares outstanding	44,258,824	44,258,824
Series B Convertible Preferred Stock	'	'
Preferred stock, shares issued	2,250,000	2,250,000
Preferred stock, shares outstanding	2,250,000	2,250,000
Series C Cumulative Preferred Stock	'	'
Preferred stock, shares issued	4,400	4,400
Preferred stock, shares outstanding	4,400	4,400
Series D Cumulative Preferred Stock	'	'
Preferred stock, shares issued	5,200	5,200
Preferred stock, shares outstanding	5,200	5,200

Consolidated_Statements_Of_Ope

Consolidated Statements Of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
REVENUES:	'	'	'	'
Oil and natural gas revenues	$54,880	$56,824	$159,953	$151,949
Other	-6	337	43	781
Total revenues	54,874	57,161	159,996	152,730
OPERATING EXPENSES:	'	'	'	'
Lease operating expense	6,745	7,072	22,674	20,169
Production and other taxes	2,869	2,462	7,293	7,964
Transportation and processing	2,121	2,768	6,832	7,841
Depreciation, depletion and amortization	36,011	33,320	95,325	102,807
Exploration	897	4,115	5,564	16,961
Impairment	85,339	'	85,339	'
General and administrative	8,312	8,294	26,707	25,326
Gain on sale of assets	'	-16	'	-59
Other	'	'	3,357	-91
Operating Expenses, Total	142,294	58,015	253,091	180,918
Operating loss	-87,420	-854	-93,095	-28,188
OTHER INCOME (EXPENSE):	'	'	'	'
Interest expense	-12,645	-12,679	-36,274	-39,079
Interest income and other	6	-1	26	18
Loss on early extinguishment of debt	'	-4,792	'	-4,792
Gain (loss) on derivatives not designated as hedges	20,348	-8,759	2,034	350
Nonoperating Income (Expense), Total	7,709	-26,231	-34,214	-43,503
Loss before income taxes	-79,711	-27,085	-127,309	-71,691
Income tax benefit	0	0	0	0
Net loss	-79,711	-27,085	-127,309	-71,691
Preferred stock dividends	7,431	5,705	22,292	11,173
Net loss applicable to common stock	($87,142)	($32,790)	($149,601)	($82,864)
PER COMMON SHARE	'	'	'	'
Net loss applicable to common stock - basic	($1.96)	($0.89)	($3.37)	($2.26)
Net loss applicable to common stock - diluted	($1.96)	($0.89)	($3.37)	($2.26)
Weighted average common shares outstanding - basic	44,430	36,732	44,337	36,706
Weighted average common shares outstanding - diluted	44,430	36,732	44,337	36,706

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'
Net loss	($127,309)	($71,691)
Adjustments to reconcile net loss to net cash provided by operating activities:	'	'
Depletion, depreciation and amortization	95,325	102,807
Impairment	85,339	'
Unrealized gain on derivatives not designated as hedges	-7,617	-3,762
Amortization of leasehold costs	2,831	13,192
Share based compensation (non-cash)	6,674	5,211
Gain on sale of assets	'	-59
Exploration cost	785	658
Amortization of finance cost, debt discount and accretion	7,995	10,005
Loss on early extinguishment of debt	'	4,792
Amortization of transportation obligation	601	920
Change in assets and liabilities:	'	'
Accounts receivable, trade and other, net of allowance	-5,732	3,447
Accrued oil and natural gas revenue	-1,520	-3,537
Inventory	758	200
Prepaid expenses and other	562	-114
Accounts payable	42,525	-19,275
Accrued liabilities	-6,049	-1,953
Net cash provided by operating activities	95,168	40,841
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'
Capital expenditures	-238,313	-195,624
Proceeds from sale of assets	625	449
Net cash used in investing activities	-237,688	-195,175
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'
Proceeds from bank borrowings	247,000	274,800
Principal payments of bank borrowings	-129,000	-227,000
Restricted cash	'	-109,250
Proceeds from preferred stock offering	'	230,822
Preferred stock dividends	-22,292	-11,173
Debt issuance costs	-334	-3,440
Exercise of stock options and warrants	141	322
Other	'	-34
Net cash provided by financing activities	95,515	155,047
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	-47,005	713
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	49,220	1,188
CASH AND CASH EQUIVALENTS, END OF PERIOD	$2,215	$1,901

Description_of_Business_and_Si

Description of Business and Significant Accounting Policies	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Description of Business and Significant Accounting Policies	'
	NOTE 1—Description of Business and Significant Accounting Policies
	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, (ii) South Texas, which includes the Eagle Ford Shale Trend and (iii) Northwest Louisiana and East Texas, which includes the Haynesville Shale and Cotton Valley Trends.
	Principles of Consolidation— The consolidated financial statements of the Company included in this Quarterly Report on Form 10-Q have been prepared, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) and accordingly, certain information normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“US GAAP”) has been condensed or omitted. 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 periods’ 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 includes cash on hand, demand deposit accounts and temporary cash investments with maturities of ninety days or less at the date of purchase.
	Restricted Cash—Restricted cash at September 30, 2014 of $51.8 million is held in escrow for the repurchase of the remaining outstanding principal amount on our 5% Convertible Senior Notes due 2029. See Note 3.
	Property and Equipment—As of September 30, 2014, we had interests in oil and natural gas properties totaling $898.2 million, net of accumulated depletion, which we account for under the successful efforts method. 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.
	Impairment—We periodically assess our long-lived assets recorded in oil and natural gas properties on the Consolidated Balance Sheets to ensure that they are not carried in excess of fair value, which is computed using level 3 inputs such as discounted cash flow models or valuations, based on estimated future commodity prices and our various operational assumptions. 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.
	During the third quarter of 2014 there was an indication, due to declines in estimated proved reserves, the carrying amount of certain of our natural gas properties was not recoverable from future cash flows.  We recorded an impairment of $85.3 million for the three and nine months ended September 30, 2014. The impairment charge reduced the fields’ carrying value to an estimated fair value of $25.0 million. Estimated fair value was measured using the income approach with Level 3 inputs.  No impairments were recorded for the three months ended March 31, 2014 or June 30, 2014.
	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 are our senior notes;
	—	Level 2 Inputs— quotes which are derived principally from or corroborated by observable market data. Included in this level are our bank debt 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.
	The following table summarizes the fair value of our financial instruments and long lived assets that are recorded or disclosed at fair value classified in each level as of September 30, 2014:
		Fair Value Measurements as of September 30, 2014
		(in thousands)
	Description	Level 1			Level 2			Level 3		Total
	Recurring Fair Value Measurements
	Commodity Derivatives (see Note 6)	$	—		$	8,489		$	—	$	8,489
	Debt (see Note 3)		(508,262	)		(118,000	)		—		(626,262	)
	Total recurring fair value measurements	$	(508,262	)	$	(109,511	)	$	—	$	(617,773	)
	Nonrecurring Fair Value Measurements
	Impaired Natural Gas Properties	$	—		$	—		$	24,952	$	24,952
	As of September 30, 2014 and December 31, 2013, 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.
	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. Gains and losses on disposals or retirements that are significant or include an entire depreciable or depletable property unit are included in operating income. 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.
	Transportation Obligation—We entered into a natural gas gathering agreement with an independent service provider, effective July 27, 2010. The agreement is scheduled to remain in effect for a period of ten years and requires the service provider to construct pipelines and facilities to connect our wells to the service provider’s gathering system in our Eagle Ford Shale Trend area of South Texas. In compensation for the services, we agreed to pay the service provider 110 percent of the total capital cost incurred by the service provider to construct new pipelines and facilities. The service provider bills us for 20 percent of the accumulated unpaid capital costs annually.
	We accounted for the agreement by recording a long-term asset, included in “Deferred financing cost and other” on the Consolidated Balance Sheets. The asset is being amortized using the units-of-production method and the amortization expense is included in “Transportation and processing” on the Consolidated Statements of Operations. The related current and long-term liabilities are presented on the Consolidated Balance Sheets in “Accrued liabilities” and “Transportation obligation”, respectively.
	Asset Retirement Obligations—We follow the accounting standard related to accounting for asset retirement obligations. These 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. See Note 2.
	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 September 30, 2014 and December 31, 2013, 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. All our realized gain or losses on our derivative contracts are the result of cash settlements. We have not designated any of our derivative contracts as hedges, accordingly; changes in fair value are reflected in earnings. See Note 6.
	Earnings Per Share—Basic loss per common share is computed by dividing net loss available to common stockholders for each reporting period by the weighted-average number of common shares outstanding during the period. Diluted loss per common share is computed by dividing net 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 5.375% Series B Convertible Preferred Stock (“Series B Preferred Stock”), 3.25% Convertible Senior Notes due 2026 (the “2026 Notes”), 5% Convertible Senior Notes due 2029 (the “2029 Notes”) and 5% Convertible Senior Notes due 2032 (the “2032 Notes”). See Note 4.
	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.
	Guarantees—On March 2, 2011, we issued and sold $275 million aggregate principal amount of our 8.875% Senior Notes due 2019 (the “2019 Notes”). Upon issuance of the guarantee related to the 2019 Notes, our subsidiary also became a guarantor on our outstanding 2029 Notes and our 2026 Notes, pursuant to the respective indentures governing the 2029 Notes and 2026 Notes. On August 26, 2013 and October 1, 2013, we issued $109.25 million and $57.0 million, respectively, aggregate principal amount of our 2032 Notes, which are also guaranteed by our subsidiary pursuant to the terms of the indenture governing the 2032 Notes. The 2019 Notes, 2029 Notes, 2026 Notes and 2032 Notes are guaranteed on a senior unsecured basis by our 100% owned subsidiary, Goodrich Petroleum Company, L.L.C.
	Goodrich Petroleum Corporation, as the parent company (the “Parent Company”), has no independent assets or operations. The guarantees are full and unconditional, subject to customary exceptions pursuant to the indentures governing our 2019 Notes, 2026 Notes, 2029 Notes and 2032 Notes, as discussed below. The Parent Company has no other subsidiaries. In addition, there are no restrictions on the ability of the Parent Company to obtain funds from its subsidiary by dividend or loan. Finally, the Parent Company’s wholly-owned subsidiary does not have restricted assets that exceed 25% of net assets as of the most recent fiscal year end that may not be transferred to the Parent Company in the form of loans, advances or cash dividends by the subsidiary without the consent of a third party.
	Guarantees of the 2019 Notes will be released under certain circumstances, including in the event a Subsidiary Guarantor (as defined in the indenture governing the 2019 Notes) is sold or disposed of (whether by merger, consolidation, the sale of its capital stock or the sale of all or substantially all of its assets (other than by lease)) and whether or not the Subsidiary Guarantor is the surviving entity in such transaction to a person which is not the Parent Company or a Restricted Subsidiary of the Parent Company, such Subsidiary Guarantor will be released from its obligations under its Subsidiary Guarantee if the sale or other disposition does not violate the covenants described under “Limitation on Sales of Assets and Subsidiary Stock” in the indenture governing the 2019 Notes. In addition, a Subsidiary Guarantor will be released from its obligations under the indenture and its guarantee if such Subsidiary Guarantor ceases to guarantee any other indebtedness of the Parent Company or a Subsidiary Guarantor under a credit facility, and is not a borrower under the Senior Secured Credit Agreement, provided no Event of Default (as defined in the indenture governing the 2019 Notes) has occurred and is continuing; or if the Parent Company designates such subsidiary as an Unrestricted Subsidiary and such designation complies with the other applicable provisions of the indenture or if such subsidiary otherwise no longer meets the definition of a Restricted Subsidiary; or in connection with any covenant defeasance, legal defeasance or satisfaction and discharge of the 2019 Notes in accordance with the indenture.
	Guarantees of the 2032 Notes, 2029 Notes and 2026 Notes will be released if the Subsidiary Guarantor no longer guarantees the 2019 Notes, if the Subsidiary Guarantor is dissolved or liquidated, if the Subsidiary Guarantor is no longer the Parent Company’s subsidiary or upon satisfaction and discharge of the 2032 Notes, 2029 Notes or 2026 Notes in accordance with their respective indentures.
	New Accounting Pronouncements
	On August 27, 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-15, which provides guidance on determining when and how to disclose going-concern uncertainties in the financial statements. The new standard requires management to perform interim and annual assessments of the Company’s ability to continue as a going concern within one year of the date the financial statements are issued. An entity must provide certain disclosures if conditions or events raise substantial doubt about the entity’s ability to continue as a going concern. The ASU applies to all entities and is effective for annual periods ending after December 15, 2016, and interim periods thereafter, with early adoption permitted.
	In May 2014, the FASB issued ASU 2014-09 that introduces a new five-step revenue recognition model in which an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. This standard is effective for fiscal years beginning after December 15, 2016, including interim periods within that reporting period. The Company is currently evaluating the new guidance to determine the impact it will have on its consolidated financial statements.
	In April 2014, the FASB issued ASU 2014-08, which includes amendments that change the requirements for reporting discontinued operations and require additional disclosures about discontinued operations. Under the new guidance, only disposals representing a strategic shift in operations - that is, a major effect on the organization’s operations and financial results should be presented as discontinued operations. Additionally, the ASU requires expanded disclosures about discontinued operations that will provide financial statement users with more information about the assets, liabilities, income, and expenses of discontinued operations. The new standard is effective in the first quarter of 2015 for public organizations with calendar year ends. Early adoption would be permitted for any annual or interim period for which an entity’s financial statements have not yet been made available for issuance. The adoption of this guidance is not expected to have an impact on the Company’s consolidated financial statements.

Asset_Retirement_Obligations

Asset Retirement Obligations	9 Months Ended
	Sep. 30, 2014
Asset Retirement Obligation Disclosure [Abstract]	'
Asset Retirement Obligations	'
	NOTE 2—Asset Retirement Obligations
	The reconciliation of the beginning and ending asset retirement obligation for the period ending September 30, 2014 is as follows (in thousands):
		September 30,
		2014
	Beginning balance at December 31, 2013	$	20,856
	Liabilities incurred		363
	Revisions in estimated liabilities		50
	Liabilities settled		—
	Accretion expense		1,053
	Dispositions		(201	)
	Ending balance	$	22,121
	Current liability	$	149
	Long term liability	$	21,972

Debt

Debt	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Debt	'
	NOTE 3—Debt
	Debt consisted of the following balances as of the dates indicated (in thousands):
		30-Sep-14							31-Dec-13
		Principal		Carrying			Fair		Principal			Carrying		Fair
				Amount			Value (1)					Amount		Value (1)
	Senior Credit Facility	$	118,000	$	118,000		$	118,000	$	—		$	—	$	—
	3.25% Convertible Senior Notes due 2026		429		429			341		429			429		429
	5.0% Convertible Senior Notes due 2029 (2)		51,816		51,816			51,298		51,816			49,663		51,686
	5.0% Convertible Senior Notes due 2032 (3)		169,921		164,219			176,123		167,405			160,437		171,863
	8.875% Senior Notes due 2019		275,000		275,000			280,500		275,000			275,000		288,063
	Total debt	$	615,166	$	609,464		$	626,262	$	494,650		$	485,529	$	512,041
	-1	The carrying amount for the Second Amended and Restated Credit Agreement represents fair value as the variable interest rates are reflective of current market conditions. The fair value of the notes was obtained by direct market quotes within Level 1 of the fair value hierarchy.
	-2	The debt discount is amortized using the effective interest rate method based upon an original five year term through October 1, 2014. The debt discount was zero and $2.1 million as of September 30, 2014 and December 31, 2013, respectively.
	-3	The debt discount is 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 debt discount was $5.7 million and $7.0 million as of September 30, 2014 and December 31, 2013, respectively.
	The following table summarizes the total interest expense (contractual interest expense, accretion, amortization of debt discount and financing costs) and the effective interest rate on the liability component of the debt (amounts in thousands, except effective interest rates):
		Three Months					Three Months					Nine Months					Nine Months
		Ended					Ended					Ended					Ended
		30-Sep-14					30-Sep-13					30-Sep-14					30-Sep-13
				Effective					Effective					Effective					Effective
		Interest		Interest			Interest		Interest			Interest		Interest			Interest		Interest
		Expense		Rate			Expense		Rate			Expense		Rate			Expense		Rate
	Senior Credit Facility	$	1,332		5.3	%	$	894		5.9	%	$	2,368		6.9	%	$	3,235		4.9	%
	3.25% Convertible Senior Notes due 2026		4		3.3	%		3		3.3	%		11		3.3	%		10		3.3	%
	5.0% Convertible Senior Notes due 2029		1,431		11.1	%		4,578		11.1	%		4,280		11.3	%		15,976		11.3	%
	5.0% Convertible Senior Notes due 2032		3,551		8.7	%		877		8.7	%		10,634		8.7	%		877		8.7	%
	8.875% Senior Notes due 2019		6,327		9.2	%		6,327		9.2	%		18,981		9.2	%		18,981		9.2	%
	Total	$	12,645				$	12,679				$	36,274				$	39,079
	Senior Credit Facility
	Total lender commitments under the Second Amended and Restated Credit Agreement (including all amendments, the “Senior Credit Facility”) are $600 million subject to borrowing base limitation which as of September 30, 2014 was $250 million. Pursuant to the terms of the Senior Credit Facility, borrowing base redeterminations occur on a semi-annual basis on April 1 and October 1. In connection with the October 1, 2014 redetermination, the borrowing base remained at $250 million. The borrowing base will be reduced to $230 million upon closing of the sale of our non-core assets (see Note 8). Interest on revolving borrowings under the Senior Credit Facility accrues at a rate calculated, at our option, at the bank base rate plus 1.00% to 1.75%, or LIBOR plus 2.00% to 2.75%, depending on borrowing base utilization. As of September 30, 2014, we had $118 million outstanding under the Senior Credit Facility. Substantially all our assets are pledged as collateral to secure the Senior Credit Facility.
	The terms of the Senior Credit Facility require us to maintain certain covenants. Capitalized terms used here, but not defined, have the meanings assigned to them in the Senior Credit Facility. In October 2014, we entered into a Twelfth Amendment which was effective as of September 30, 2014. Entering into the Twelfth amendment allowed us to remain in compliance with our financial covenants. The Twelfth Amendment to the Senior Credit Facility amended the EBITDAX annualized calculation. The primary financial covenants include:
	—	Current Ratio of 1.0/1.0;
	—	Interest Coverage Ratio of EBITDAX of not less than 2.5/1.0 for the trailing four quarters or when measured for the second, third and fourth quarters of 2014, shall be based on annualized interim EBITDAX amounts rather than trailing four quarters. The interest for such period to apply solely to the cash portion of interest expense; and
	—	Total Debt no greater than 4.0 times EBITDAX for the trailing four quarters. Total Debt used in such ratio to be reduced by the amount of any restricted cash held in an escrow account established for the benefit of the lenders and dedicated to the redemption or prepayment of the 2029 Notes; provided that such ratio, when measured for the third and fourth quarters of 2014 and first quarter of 2015, shall be based on annualized interim EBITDAX amounts rather than trailing four quarters.
	As used in connection with the Senior Credit Facility, Current Ratio is consolidated current assets (including current availability under the Senior Credit Facility, but excluding non-cash assets related to our derivatives) to consolidated current liabilities (excluding non-cash liabilities related to our derivatives, accrued capital expenditures and current maturities under the Senior Credit Facility).
	As used in connection with the Senior Credit Facility, EBITDAX is earnings before interest expense, income tax, depreciation, depletion and amortization, exploration expense, stock based compensation and impairment of oil and natural gas properties. In calculating EBITDAX for this purpose, earnings include realized gains (losses) from derivatives not designated as hedges but exclude unrealized gains (losses) from derivatives not designated as hedges.
	We were in compliance with all the financial covenants of the Senior Credit Facility as of September 30, 2014.
	8.875% Senior Notes due 2019
	On March 2, 2011, we sold $275 million of our 2019 Notes. The 2019 Notes 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 indebtedness. The 2019 Notes accrue interest at a rate of 8.875% annually, and interest is paid semi-annually in arrears on March 15 and September 15. The 2019 Notes are guaranteed by our subsidiary that also guarantees our Senior Credit Facility.
	After March 15, 2015, we may redeem all or a portion of the 2019 Notes at redemption prices (expressed as percentages of principal amount) equal to (i) 104.438% for the twelve-month period beginning on March 15, 2015; (ii) 102.219% for the twelve-month period beginning on March 15, 2016 and (iii) 100.000% on or after March 15, 2017, in each case plus accrued and unpaid interest to the redemption date. In addition, prior to March 15, 2015, we may redeem all or a part of the 2019 Notes at a redemption price equal to 100% of the principal amount of the 2019 Notes to be redeemed plus a make-whole premium, plus accrued and unpaid interest to the redemption date.
	The indenture governing the 2019 Notes restricts our ability and the ability of certain of our subsidiaries to: (i) incur additional debt; (ii) make certain dividends or pay dividends or distributions on our capital stock or purchase, redeem or retire such capital stock; (iii) sell assets, including the capital stock of our restricted subsidiaries; (iv) pay dividends or other payments of our restricted subsidiaries; (v) create liens that secure debt; (vi) enter into transactions with affiliates and (vii) merge or consolidate with another company. These covenants are subject to a number of important exceptions and qualifications. At any time when the 2019 Notes are rated investment grade by both Moody’s Investors Service, Inc. and Standard & Poor’s Ratings Services and no Default (as defined in the indenture governing the 2019 Notes) has occurred and is continuing, many of these covenants will terminate.
	5% Convertible Senior Notes due 2029
	In September 2009, we sold $218.5 million of our 2029 Notes. The 2029 Notes mature on October 1, 2029, unless earlier converted, redeemed or repurchased. As of September 30, 2014, $51.8 million in aggregate principal amount of the 2029 Notes remain outstanding.
	The 2029 Notes are our senior unsecured obligations and rank equally in right of payment to all of our other existing and future indebtedness. The 2029 Notes accrue interest at a rate of 5% annually, and interest is paid semi-annually in arrears on April 1 and October 1 of each year.
	On September 2, 2014, the Company notified the holders of $51.8 million of the 2029 Notes that they had an option to require the Company to purchase on October 1, 2014, all or a portion of such holders’ notes at a price equal to par, plus any accrued and unpaid interest to, but not including, October 1, 2014. On September 30, 2014, the Company was notified that holders of $45.1 million of the 2029 Notes requested their notes be repurchased.  Subsequent to September 30, 2014, the Company used the Restricted Cash held in escrow to repurchase $45.1 million of the 2029 Notes on October 1, 2014.  Following the repurchase of the 2029 Notes, $6.7 million of the 2029 Notes remained outstanding. Accordingly, as of September 30, 2014, the $45.1 million repurchase amount of the 2029 Notes is reflected on our Consolidated Balance Sheets as a current liability and the remaining balance of $6.7 million is reflected as long term debt. The $6.7 million remaining in the escrow account was released to us on October 2, 2014.
	The 2029 Notes are convertible into shares of our common stock at a rate equal to 28.8534 shares per $1,000 principal amount of 2029 Notes (equal to an initial conversion price of approximately $34.66 per share of common stock per share).
	Investors may convert their 2029 Notes at their option at any time prior to the close of business on the second business day immediately preceding the maturity date under the following circumstances: (1) during any fiscal quarter (and only during such fiscal quarter), if the last reported sale price of our common stock is greater than or equal to 135% of the conversion price of the 2029 Notes for at least 20 trading days in the period of 30 consecutive trading days ending on the last trading day of the preceding fiscal quarter; (2) if the 2029 Notes have been called for redemption; or (3) upon the occurrence of one of specified corporate transactions. Investors may also convert their 2029 Notes at their option at any time beginning on September 1, 2029, and ending at the close of business on the second business day immediately preceding the maturity date.
	We separately accounted for the liability and equity components of our 2029 Notes in a manner that reflected our nonconvertible debt borrowing rate when interest was recognized through September 30, 2014. 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 on the 2029 Notes was fully amortized as of September 30, 2014.
	5% Convertible Senior Notes due 2032
	We entered into separate, privately negotiated exchange agreements in 2013 under 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 will mature on October 1, 2032.
	Many terms of the 2032 Notes remain the same as the 2029 Notes they replaced, including the 5.0% annual cash interest rate and the conversion rate of 28.8534 shares of our common stock per $1,000 principal amount of 2032 Notes (equivalent to an initial conversion price of approximately $34.6580 per share of common stock), subject to adjustment in certain circumstances.
	Unlike the 2029 Notes, the principal amount of the 2032 Notes accretes at a rate of 2% per year commencing August 26, 2013, compounding on a semi-annual basis, until October 1, 2017. The accreted portion of the principal is payable in cash upon maturity but does not bear cash interest and is not convertible into our common stock. Holders have 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. Accretion of principal is and will be reflected as a non-cash component of interest expense on our statement of operations during the term of the 2032 Notes. We recorded $0.8 million of accretion in the third quarter of 2014.
	We have the right to redeem the 2032 Notes on or after October 1, 2016 at a price equal to 100% of the principal amount, plus accrued but unpaid interest and accretion thereon. The 2032 Notes also provide us with the option, at our election, to convert the new notes in whole or in part, prior to maturity, into the underlying common stock, provided the trading price of our common stock exceeds $45.06 (or 130% of the then applicable conversion price) for the required measurement period. If we elect to convert the 2032 Notes on or before October 1, 2016, holders will receive a make-whole premium.
	We separately account 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 to debt component which compared to the face results in a debt discount of $7.5 million which will be 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 $5.7 million remains to be amortized on the 2032 Notes as of September 30, 2014.
	3.25% Convertible Senior Notes Due 2026
	At September 30, 2014, $0.4 million of the 2026 Notes remained outstanding. Holders may present to us for redemption the remaining outstanding 2026 Notes on December 1, 2016 and December 1, 2021.
	Upon conversion, we have the option to deliver shares at the applicable conversion rate, redeem in cash or in certain circumstances redeem in a combination of cash and shares.
	The 2026 Notes are convertible into shares of our common stock at a rate equal to the sum of:
	a)	15.1653 shares per $1,000 principal amount of 2026 Notes (equal to a “base conversion price” of approximately $65.94 per share) plus
	b)	an additional amount of shares per $1,000 of principal amount of 2026 Notes equal to the incremental share factor 2.6762), multiplied by a fraction, the numerator of which is the applicable stock price less the “base conversion price” and the denominator of which is the applicable stock price.

Net_Loss_Per_Common_Share

Net Loss Per Common Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Net Loss Per Common Share	'
	NOTE 4—Net Loss Per Common Share
	Net loss applicable to common stock was used as the numerator in computing basic and diluted loss per common share for the three and nine months ended September 30, 2014 and 2013. The following table sets forth information related to the computations of basic and diluted loss per share:
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
		(Amounts in thousands, except per share data)
	Basic and Diluted loss per share:
	Net loss applicable to common stock	$	(87,142	)	$	(32,790	)	$	(149,601	)	$	(82,864	)
	Weighted average shares of common stock outstanding		44,430			36,732			44,337			36,706
	Basic and Diluted loss per share (1) (2) (3)	$	(1.96	)	$	(0.89	)	$	(3.37	)	$	(2.26	)
	(1) Common shares issuable upon assumed conversion of		3,588			3,588			3,588			3,588
	convertible preferred stock or dividends paid were not
	presented as they would have been anti-dilutive.
	(2) Common shares issuable upon assumed conversion of		4,997			6,311			4,997			6,311
	the 2026 Notes, 2029 Notes and 2032 Notes or interest
	paid were not presented as they would have been
	anti-dilutive.
	(3) Common shares issuable on assumed conversion of		640			771			593			540
	restricted stock and employee stock option were not
	included in the computation of diluted loss per common
	share since their inclusion would have been
	anti-dilutive.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	NOTE 5—Income Taxes
	We recorded no income tax expense or benefit for the three and nine months ended September 30, 2014. We increased our valuation allowance and reduced our net deferred tax assets to zero during 2009 after considering all available positive and negative evidence related to the realization of our deferred tax assets. Our assessment of the realization of our deferred tax assets has not changed, and as a result we continue to maintain a full valuation allowance for our net deferred assets as of September 30, 2014.
	As of September 30, 2014, we have no unrecognized tax benefits. There were no significant changes to the calculation since December 31, 2013.

Derivative_Activities

Derivative Activities	9 Months Ended
	Sep. 30, 2014
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
Derivative Activities	'
	NOTE 6—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 our realized gain or losses on our derivative contracts are the result of cash settlements. All gains and losses both realized and unrealized from our derivative contracts have been recognized in “Other income (expense)” on our Consolidated Statements of Operations.
	The following table summarizes the realized and unrealized gains and losses we recognized on our oil and natural gas derivatives for the three and nine month periods ended September 30, 2014 and 2013.
			Three Months Ended							Nine Months Ended
			September 30,							September 30,
	Oil and Natural Gas Derivatives (in thousands)		2014			2013				2014				2013
	Realized gain/(loss) on oil and natural gas derivatives		$	227		$	(3,647	)		$	(5,583	)		$	(3,412	)
	Unrealized gain/(loss) on oil and natural gas derivatives			20,121			(5,112	)			7,617				3,762
	Total gain/(loss) on oil and natural gas derivatives		$	20,348		$	(8,759	)		$	2,034			$	350
	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 hedges are approved by the Hedging Committee of our Board of Directors, and reviewed periodically by the Board of Directors. As of September 30, 2014, the commodity derivatives we used were in the form of:
	(a)	swaps, where we receive a fixed price and pay a floating price, based on NYMEX, Louisiana Light Sweet Crude (Argus) or specific transfer point quoted prices, and
	(b)	calls, where we grant the counter party the option to buy an underlying commodity at a specified strike price, within a certain period.
	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. Decreases in domestic crude oil and natural gas spot 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 had exposure of $10.3 million in derivative fair value had our counterparties as a group been unable to fulfill their obligations as of September 30, 2014.
	As of September 30, 2014, our open positions on our outstanding commodity derivative contracts, all of which were with Royal Bank of Canada, Bank of Montreal, JPMorgan Chase Bank, N.A., Merrill Lynch Commodities, Inc. and Wells Fargo Bank, N.A., were as follows:
	Contract Type	Daily			Total				Fixed Price		Fair Value at
		Volume			Volume						30-Sep-14
											(in thousands)
	Natural gas swaps (MMBtu)
	2014		30,000			2,760,000			$4.18-5.06		$	1,825
	Natural gas calls (MMBtu)
	2015		20,000			7,300,000			$5.05-5.06			(734	)
	2016		20,000			7,320,000			$5.05-5.06			(1,101	)
	Oil swaps (BBL)
	2014		2,500			230,000			$90.95-98.02			578
	2014 (LLS Argus)		1,300			119,600			$94.55			306
	2015 (LLS Argus)		3,500			1,277,500			$94.55-98.10			7,615
									Total		$	8,489
	The following table summarizes the fair values of our derivative financial instruments that are recorded at fair value classified in each level as of September 30, 2014 (in thousands). We measure the fair value of our commodity derivative contracts by applying the income approach. See Note 1 “Description of Business and Significant Accounting Policies-Fair Value Measurement” for our discussion for inputs used and valuation techniques for determining fair values.
		September 30, 2014 Fair Value Measurements Using
	Description	Level 1			Level 2				Level 3				Total
	Current Assets Commodity Derivatives	$	—		$	7,669			$	—			$	7,669
	Non-current Assets Commodity Derivatives		—			2,167				—				2,167
	Current Liabilities Commodity Derivatives		—			—				—				—
	Non-current Liabilities Commodity Derivatives		—			(1,347	)			—				(1,347	)
	Total	$	—		$	8,489			$	—			$	8,489
	We enter into oil and natural gas derivative contracts under which we have netting arrangements with each counter party. The following table discloses and reconciles the gross amounts to the amounts as presented on the Statement of Financial Position for the periods ending September 30, 2014 and December 31, 2013.
		30-Sep-14											31-Dec-13
	Fair Value of Oil and Gas Derivatives (in thousands)	Gross			Amount				As				Gross				Amount			As
		Amount			Offset				Presented				Amount				Offset			Presented
	Derivative Current Asset	$	8,157		$	(488	)		$	7,669			$	6,658			$	(471	)	$	6,187
	Derivative Non-current Asset		2,167			—				2,167				1,396				—			1,396
	Derivative Current Liability		(488	)		488				—				(4,812	)			471			(4,341	)
	Derivative Non-current Liability		(1,347	)		—				(1,347	)			(2,371	)			—			(2,371	)
	Total	$	8,489		$	—			$	8,489			$	871			$	—		$	871

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	NOTE 7—Commitments and Contingencies
	As of September 30, 2014, we did not have any changes in material commitments and contingencies, including outstanding and pending litigation.

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	NOTE 8—Subsequent Events
	On November 3, 2014, the Company entered into a definitive purchase and sale agreement to sell our interest in the Beckville, North Minden and West Brachfield fields located in Panola and Rusk Counties, Texas for $61.0 million, subject to closing adjustments. The agreement is subject to customary terms and conditions with an effective date of July 1, 2014 and an estimated closing date of December 22, 2014. The Company plans to use the net proceeds from the sale to repay borrowings under our Senior Credit Facility.

Description_of_Business_and_Si1

Description of Business and Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2014

Accounting Policies [Abstract]

'

Principles of Consolidation

'

Principles of Consolidation— The consolidated financial statements of the Company included in this Quarterly Report on Form 10-Q have been prepared, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) and accordingly, certain information normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“US GAAP”) has been condensed or omitted. 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 periods’ 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 includes cash on hand, demand deposit accounts and temporary cash investments with maturities of ninety days or less at the date of purchase.

Restricted Cash

'

Restricted Cash—Restricted cash at September 30, 2014 of $51.8 million is held in escrow for the repurchase of the remaining outstanding principal amount on our 5% Convertible Senior Notes due 2029. See Note 3.

Property and Equipment

'

Property and Equipment—As of September 30, 2014, we had interests in oil and natural gas properties totaling $898.2 million, net of accumulated depletion, which we account for under the successful efforts method. 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.

Impairment

'

Impairment—We periodically assess our long-lived assets recorded in oil and natural gas properties on the Consolidated Balance Sheets to ensure that they are not carried in excess of fair value, which is computed using level 3 inputs such as discounted cash flow models or valuations, based on estimated future commodity prices and our various operational assumptions. 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.

During the third quarter of 2014 there was an indication, due to declines in estimated proved reserves, the carrying amount of certain of our natural gas properties was not recoverable from future cash flows.  We recorded an impairment of $85.3 million for the three and nine months ended September 30, 2014. The impairment charge reduced the fields’ carrying value to an estimated fair value of $25.0 million. Estimated fair value was measured using the income approach with Level 3 inputs.  No impairments were recorded for the three months ended March 31, 2014 or June 30, 2014.

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 are our senior notes;

—

Level 2 Inputs— quotes which are derived principally from or corroborated by observable market data. Included in this level are our bank debt 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.

The following table summarizes the fair value of our financial instruments and long lived assets that are recorded or disclosed at fair value classified in each level as of September 30, 2014:

Fair Value Measurements as of September 30, 2014

(in thousands)

Description

Level 1

Level 2

Level 3

Total

Recurring Fair Value Measurements

Commodity Derivatives (see Note 6)

$

—

$

8,489

$

—

$

8,489

Debt (see Note 3)

(508,262

)

(118,000

)

—

(626,262

)

Total recurring fair value measurements

$

(508,262

)

$

(109,511

)

$

—

$

(617,773

)

Nonrecurring Fair Value Measurements

Impaired Natural Gas Properties

$

—

$

—

$

24,952

$

24,952

As of September 30, 2014 and December 31, 2013, 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.

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. Gains and losses on disposals or retirements that are significant or include an entire depreciable or depletable property unit are included in operating income. 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.

Transportation Obligation

'

Transportation Obligation—We entered into a natural gas gathering agreement with an independent service provider, effective July 27, 2010. The agreement is scheduled to remain in effect for a period of ten years and requires the service provider to construct pipelines and facilities to connect our wells to the service provider’s gathering system in our Eagle Ford Shale Trend area of South Texas. In compensation for the services, we agreed to pay the service provider 110 percent of the total capital cost incurred by the service provider to construct new pipelines and facilities. The service provider bills us for 20 percent of the accumulated unpaid capital costs annually.

We accounted for the agreement by recording a long-term asset, included in “Deferred financing cost and other” on the Consolidated Balance Sheets. The asset is being amortized using the units-of-production method and the amortization expense is included in “Transportation and processing” on the Consolidated Statements of Operations. The related current and long-term liabilities are presented on the Consolidated Balance Sheets in “Accrued liabilities” and “Transportation obligation”, respectively.

Asset Retirement Obligations

'

Asset Retirement Obligations—We follow the accounting standard related to accounting for asset retirement obligations. These 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. See Note 2.

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 September 30, 2014 and December 31, 2013, 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. All our realized gain or losses on our derivative contracts are the result of cash settlements. We have not designated any of our derivative contracts as hedges, accordingly; changes in fair value are reflected in earnings. See Note 6.

Earnings-Per Share

'

Earnings Per Share—Basic loss per common share is computed by dividing net loss available to common stockholders for each reporting period by the weighted-average number of common shares outstanding during the period. Diluted loss per common share is computed by dividing net 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 5.375% Series B Convertible Preferred Stock (“Series B Preferred Stock”), 3.25% Convertible Senior Notes due 2026 (the “2026 Notes”), 5% Convertible Senior Notes due 2029 (the “2029 Notes”) and 5% Convertible Senior Notes due 2032 (the “2032 Notes”). See Note 4.

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.

Guarantees

'

Guarantees—On March 2, 2011, we issued and sold $275 million aggregate principal amount of our 8.875% Senior Notes due 2019 (the “2019 Notes”). Upon issuance of the guarantee related to the 2019 Notes, our subsidiary also became a guarantor on our outstanding 2029 Notes and our 2026 Notes, pursuant to the respective indentures governing the 2029 Notes and 2026 Notes. On August 26, 2013 and October 1, 2013, we issued $109.25 million and $57.0 million, respectively, aggregate principal amount of our 2032 Notes, which are also guaranteed by our subsidiary pursuant to the terms of the indenture governing the 2032 Notes. The 2019 Notes, 2029 Notes, 2026 Notes and 2032 Notes are guaranteed on a senior unsecured basis by our 100% owned subsidiary, Goodrich Petroleum Company, L.L.C.

Goodrich Petroleum Corporation, as the parent company (the “Parent Company”), has no independent assets or operations. The guarantees are full and unconditional, subject to customary exceptions pursuant to the indentures governing our 2019 Notes, 2026 Notes, 2029 Notes and 2032 Notes, as discussed below. The Parent Company has no other subsidiaries. In addition, there are no restrictions on the ability of the Parent Company to obtain funds from its subsidiary by dividend or loan. Finally, the Parent Company’s wholly-owned subsidiary does not have restricted assets that exceed 25% of net assets as of the most recent fiscal year end that may not be transferred to the Parent Company in the form of loans, advances or cash dividends by the subsidiary without the consent of a third party.

Guarantees of the 2019 Notes will be released under certain circumstances, including in the event a Subsidiary Guarantor (as defined in the indenture governing the 2019 Notes) is sold or disposed of (whether by merger, consolidation, the sale of its capital stock or the sale of all or substantially all of its assets (other than by lease)) and whether or not the Subsidiary Guarantor is the surviving entity in such transaction to a person which is not the Parent Company or a Restricted Subsidiary of the Parent Company, such Subsidiary Guarantor will be released from its obligations under its Subsidiary Guarantee if the sale or other disposition does not violate the covenants described under “Limitation on Sales of Assets and Subsidiary Stock” in the indenture governing the 2019 Notes. In addition, a Subsidiary Guarantor will be released from its obligations under the indenture and its guarantee if such Subsidiary Guarantor ceases to guarantee any other indebtedness of the Parent Company or a Subsidiary Guarantor under a credit facility, and is not a borrower under the Senior Secured Credit Agreement, provided no Event of Default (as defined in the indenture governing the 2019 Notes) has occurred and is continuing; or if the Parent Company designates such subsidiary as an Unrestricted Subsidiary and such designation complies with the other applicable provisions of the indenture or if such subsidiary otherwise no longer meets the definition of a Restricted Subsidiary; or in connection with any covenant defeasance, legal defeasance or satisfaction and discharge of the 2019 Notes in accordance with the indenture.

Guarantees of the 2032 Notes, 2029 Notes and 2026 Notes will be released if the Subsidiary Guarantor no longer guarantees the 2019 Notes, if the Subsidiary Guarantor is dissolved or liquidated, if the Subsidiary Guarantor is no longer the Parent Company’s subsidiary or upon satisfaction and discharge of the 2032 Notes, 2029 Notes or 2026 Notes in accordance with their respective indentures.

New Accounting Pronouncements

'

New Accounting Pronouncements

On August 27, 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-15, which provides guidance on determining when and how to disclose going-concern uncertainties in the financial statements. The new standard requires management to perform interim and annual assessments of the Company’s ability to continue as a going concern within one year of the date the financial statements are issued. An entity must provide certain disclosures if conditions or events raise substantial doubt about the entity’s ability to continue as a going concern. The ASU applies to all entities and is effective for annual periods ending after December 15, 2016, and interim periods thereafter, with early adoption permitted.

In May 2014, the FASB issued ASU 2014-09 that introduces a new five-step revenue recognition model in which an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. This standard is effective for fiscal years beginning after December 15, 2016, including interim periods within that reporting period. The Company is currently evaluating the new guidance to determine the impact it will have on its consolidated financial statements.

In April 2014, the FASB issued ASU 2014-08, which includes amendments that change the requirements for reporting discontinued operations and require additional disclosures about discontinued operations. Under the new guidance, only disposals representing a strategic shift in operations - that is, a major effect on the organization’s operations and financial results should be presented as discontinued operations. Additionally, the ASU requires expanded disclosures about discontinued operations that will provide financial statement users with more information about the assets, liabilities, income, and expenses of discontinued operations. The new standard is effective in the first quarter of 2015 for public organizations with calendar year ends. Early adoption would be permitted for any annual or interim period for which an entity’s financial statements have not yet been made available for issuance. The adoption of this guidance is not expected to have an impact on the Company’s consolidated financial statements.

Description_of_Business_and_Si2

Description of Business and Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Fair Value of Financial Instruments and Long Lived Assets	'
	The following table summarizes the fair value of our financial instruments and long lived assets that are recorded or disclosed at fair value classified in each level as of September 30, 2014:
		Fair Value Measurements as of September 30, 2014
		(in thousands)
	Description	Level 1			Level 2			Level 3		Total
	Recurring Fair Value Measurements
	Commodity Derivatives (see Note 6)	$	—		$	8,489		$	—	$	8,489
	Debt (see Note 3)		(508,262	)		(118,000	)		—		(626,262	)
	Total recurring fair value measurements	$	(508,262	)	$	(109,511	)	$	—	$	(617,773	)
	Nonrecurring Fair Value Measurements
	Impaired Natural Gas Properties	$	—		$	—		$	24,952	$	24,952

Asset_Retirement_Obligations_T

Asset Retirement Obligations (Tables)	9 Months Ended
	Sep. 30, 2014
Asset Retirement Obligation Disclosure [Abstract]	'
Reconciliation of Asset Retirement Obligations	'
	The reconciliation of the beginning and ending asset retirement obligation for the period ending September 30, 2014 is as follows (in thousands):
		September 30,
		2014
	Beginning balance at December 31, 2013	$	20,856
	Liabilities incurred		363
	Revisions in estimated liabilities		50
	Liabilities settled		—
	Accretion expense		1,053
	Dispositions		(201	)
	Ending balance	$	22,121
	Current liability	$	149
	Long term liability	$	21,972

Debt_Tables

Debt (Tables)	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Components of Debt	'
	Debt consisted of the following balances as of the dates indicated (in thousands):
		30-Sep-14							31-Dec-13
		Principal		Carrying			Fair		Principal			Carrying		Fair
				Amount			Value (1)					Amount		Value (1)
	Senior Credit Facility	$	118,000	$	118,000		$	118,000	$	—		$	—	$	—
	3.25% Convertible Senior Notes due 2026		429		429			341		429			429		429
	5.0% Convertible Senior Notes due 2029 (2)		51,816		51,816			51,298		51,816			49,663		51,686
	5.0% Convertible Senior Notes due 2032 (3)		169,921		164,219			176,123		167,405			160,437		171,863
	8.875% Senior Notes due 2019		275,000		275,000			280,500		275,000			275,000		288,063
	Total debt	$	615,166	$	609,464		$	626,262	$	494,650		$	485,529	$	512,041
	-1	The carrying amount for the Second Amended and Restated Credit Agreement represents fair value as the variable interest rates are reflective of current market conditions. The fair value of the notes was obtained by direct market quotes within Level 1 of the fair value hierarchy.
	-2	The debt discount is amortized using the effective interest rate method based upon an original five year term through October 1, 2014. The debt discount was zero and $2.1 million as of September 30, 2014 and December 31, 2013, respectively.
	-3	The debt discount is 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 debt discount was $5.7 million and $7.0 million as of September 30, 2014 and December 31, 2013, respectively.
Summary of Total Interest Expense and Effective Interest Rate on Debt	'
	The following table summarizes the total interest expense (contractual interest expense, accretion, amortization of debt discount and financing costs) and the effective interest rate on the liability component of the debt (amounts in thousands, except effective interest rates):
		Three Months					Three Months					Nine Months					Nine Months
		Ended					Ended					Ended					Ended
		30-Sep-14					30-Sep-13					30-Sep-14					30-Sep-13
				Effective					Effective					Effective					Effective
		Interest		Interest			Interest		Interest			Interest		Interest			Interest		Interest
		Expense		Rate			Expense		Rate			Expense		Rate			Expense		Rate
	Senior Credit Facility	$	1,332		5.3	%	$	894		5.9	%	$	2,368		6.9	%	$	3,235		4.9	%
	3.25% Convertible Senior Notes due 2026		4		3.3	%		3		3.3	%		11		3.3	%		10		3.3	%
	5.0% Convertible Senior Notes due 2029		1,431		11.1	%		4,578		11.1	%		4,280		11.3	%		15,976		11.3	%
	5.0% Convertible Senior Notes due 2032		3,551		8.7	%		877		8.7	%		10,634		8.7	%		877		8.7	%
	8.875% Senior Notes due 2019		6,327		9.2	%		6,327		9.2	%		18,981		9.2	%		18,981		9.2	%
	Total	$	12,645				$	12,679				$	36,274				$	39,079

Net_Loss_Per_Common_Share_Tabl

Net Loss Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2014
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:
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
		(Amounts in thousands, except per share data)
	Basic and Diluted loss per share:
	Net loss applicable to common stock	$	(87,142	)	$	(32,790	)	$	(149,601	)	$	(82,864	)
	Weighted average shares of common stock outstanding		44,430			36,732			44,337			36,706
	Basic and Diluted loss per share (1) (2) (3)	$	(1.96	)	$	(0.89	)	$	(3.37	)	$	(2.26	)
	(1) Common shares issuable upon assumed conversion of		3,588			3,588			3,588			3,588
	convertible preferred stock or dividends paid were not
	presented as they would have been anti-dilutive.
	(2) Common shares issuable upon assumed conversion of		4,997			6,311			4,997			6,311
	the 2026 Notes, 2029 Notes and 2032 Notes or interest
	paid were not presented as they would have been
	anti-dilutive.
	(3) Common shares issuable on assumed conversion of		640			771			593			540
	restricted stock and employee stock option were not
	included in the computation of diluted loss per common
	share since their inclusion would have been
	anti-dilutive.

Derivative_Activities_Tables

Derivative Activities (Tables)	9 Months Ended
	Sep. 30, 2014
Summary of Realized and Unrealized Gains and Losses on Derivatives	'
	The following table summarizes the realized and unrealized gains and losses we recognized on our oil and natural gas derivatives for the three and nine month periods ended September 30, 2014 and 2013.
			Three Months Ended							Nine Months Ended
			September 30,							September 30,
	Oil and Natural Gas Derivatives (in thousands)		2014			2013				2014				2013
	Realized gain/(loss) on oil and natural gas derivatives		$	227		$	(3,647	)		$	(5,583	)		$	(3,412	)
	Unrealized gain/(loss) on oil and natural gas derivatives			20,121			(5,112	)			7,617				3,762
	Total gain/(loss) on oil and natural gas derivatives		$	20,348		$	(8,759	)		$	2,034			$	350
Outstanding Commodity Derivative Contracts	'
	As of September 30, 2014, our open positions on our outstanding commodity derivative contracts, all of which were with Royal Bank of Canada, Bank of Montreal, JPMorgan Chase Bank, N.A., Merrill Lynch Commodities, Inc. and Wells Fargo Bank, N.A., were as follows:
	Contract Type	Daily			Total				Fixed Price		Fair Value at
		Volume			Volume						30-Sep-14
											(in thousands)
	Natural gas swaps (MMBtu)
	2014		30,000			2,760,000			$4.18-5.06		$	1,825
	Natural gas calls (MMBtu)
	2015		20,000			7,300,000			$5.05-5.06			(734	)
	2016		20,000			7,320,000			$5.05-5.06			(1,101	)
	Oil swaps (BBL)
	2014		2,500			230,000			$90.95-98.02			578
	2014 (LLS Argus)		1,300			119,600			$94.55			306
	2015 (LLS Argus)		3,500			1,277,500			$94.55-98.10			7,615
									Total		$	8,489
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 September 30, 2014 (in thousands). We measure the fair value of our commodity derivative contracts by applying the income approach. See Note 1 “Description of Business and Significant Accounting Policies-Fair Value Measurement” for our discussion for inputs used and valuation techniques for determining fair values.
		September 30, 2014 Fair Value Measurements Using
	Description	Level 1			Level 2				Level 3				Total
	Current Assets Commodity Derivatives	$	—		$	7,669			$	—			$	7,669
	Non-current Assets Commodity Derivatives		—			2,167				—				2,167
	Current Liabilities Commodity Derivatives		—			—				—				—
	Non-current Liabilities Commodity Derivatives		—			(1,347	)			—				(1,347	)
	Total	$	—		$	8,489			$	—			$	8,489
Derivative	'
Derivative Assets and Liabilities Recorded at Fair Value	'
	The following table discloses and reconciles the gross amounts to the amounts as presented on the Statement of Financial Position for the periods ending September 30, 2014 and December 31, 2013.
		30-Sep-14											31-Dec-13
	Fair Value of Oil and Gas Derivatives (in thousands)	Gross			Amount				As				Gross				Amount			As
		Amount			Offset				Presented				Amount				Offset			Presented
	Derivative Current Asset	$	8,157		$	(488	)		$	7,669			$	6,658			$	(471	)	$	6,187
	Derivative Non-current Asset		2,167			—				2,167				1,396				—			1,396
	Derivative Current Liability		(488	)		488				—				(4,812	)			471			(4,341	)
	Derivative Non-current Liability		(1,347	)		—				(1,347	)			(2,371	)			—			(2,371	)
	Total	$	8,489		$	—			$	8,489			$	871			$	—		$	871

Description_of_Business_and_Si3

Description of Business and Significant Accounting Policies - Additional Information (Detail) (USD $)

3 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2009

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Oct. 01, 2013

Aug. 26, 2013

Sep. 30, 2014

Dec. 31, 2013

Mar. 02, 2011

Maximum Wholly-owned subsidiary

Minimum

Maximum

Fair Value, Measurements, Nonrecurring

Fair Value, Measurements, Nonrecurring

5.0% Convertible Senior Notes due 2029

5.0% Convertible Senior Notes due 2029

5.0% Convertible Senior Notes due 2029

3.25% Convertible Senior Notes due 2026

3.25% Convertible Senior Notes due 2026

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

8.875% Senior Notes due 2019

8.875% Senior Notes due 2019

8.875% Senior Notes due 2019

Fair Value, Inputs, Level 3

Description Of Company And Significant Accounting Policies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash held in escrow

'

'

'

'

'

'

'

'

'

'

$51,800,000

'

'

'

'

'

'

'

'

'

'

'

Debt instrument interest rate

'

'

'

'

'

'

'

'

'

'

5.00%

'

'

3.25%

'

5.00%

'

'

'

8.88%

'

8.88%

Debt instruments maturity date

'

'

'

'

'

'

'

'

'

'

'2029

'

'

'2026

'

'2032

'

'

'

'2019

'

'

Interests in oil and gas properties, net of accumulated depletion

898,200,000

'

'

898,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impairement of oil and gas properties

85,339,000

0

0

85,339,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impaired Natural Gas Properties

'

'

'

'

'

'

'

'

24,952,000

24,952,000

'

'

'

'

'

'

'

'

'

'

'

'

Furniture, fixtures and equipment estimated useful lives

'

'

'

'

'

'

'3 years

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Natural gas gathering agreement period

'

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of compensation paid to service provider

'

'

'

110.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of accumulated capital costs charged annually

'

'

'

20.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock, dividend rate, percentage

'

'

'

5.38%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, principal amount

$615,166,000

'

'

$615,166,000

$494,650,000

'

'

'

'

'

$51,816,000

[1]

$51,816,000

[1]

$218,500,000

$429,000

$429,000

$169,921,000

[2]

$167,405,000

[2]

$57,000,000

$109,250,000

$275,000,000

$275,000,000

$275,000,000

Percentage owned in subsidary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

Percentage of restricted assets that may not be transferred to the parent company

'

'

'

'

'

25.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

The debt discount is amortized using the effective interest rate method based upon an original five year term through October 1, 2014. The debt discount was zero and $2.1 million as of September 30, 2014 and December 31, 2013, respectively.

[2]

The debt discount is 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 debt discount was $5.7 million and $7.0 million as of September 30, 2014 and December 31, 2013, respectively.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments and Long Lived Assets (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'		'
Debt (see Note 3)	($626,262)	[1]	($512,041)	[1]
Total recurring fair value measurements	-617,773		'
Fair Value, Inputs, Level 1	'		'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'		'
Total recurring fair value measurements	-508,262		'
Fair Value, Inputs, Level 2	'		'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'		'
Total recurring fair value measurements	-109,511		'
Fair Value, Measurements, Recurring	'		'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'		'
Commodity Derivatives (see Note 6)	8,489		'
Debt (see Note 3)	-626,262		'
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1	'		'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'		'
Debt (see Note 3)	-508,262		'
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2	'		'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'		'
Commodity Derivatives (see Note 6)	8,489		'
Debt (see Note 3)	-118,000		'
Fair Value, Measurements, Nonrecurring	'		'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'		'
Impaired Natural Gas Properties	24,952		'
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3	'		'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'		'
Impaired Natural Gas Properties	$24,952		'
[1]	The carrying amount for the Second Amended and Restated Credit Agreement represents fair value as the variable interest rates are reflective of current market conditions. The fair value of the notes was obtained by direct market quotes within Level 1 of the fair value hierarchy.

Reconciliation_of_Asset_Retire

Reconciliation of Asset Retirement Obligations (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Asset Retirement Obligation Disclosure [Abstract]	'	'
Beginning balance	$20,856	'
Liabilities incurred	363	'
Revisions in estimated liabilities	50	'
Liabilities settled	'	'
Accretion expense	1,053	'
Dispositions	-201	'
Ending balance	22,121	'
Current liability	149	99
Long term liability	$21,972	$20,757

Components_of_Debt_Detail

Components of Debt (Detail) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2009

Sep. 30, 2014

Dec. 31, 2013

Oct. 01, 2013

Aug. 26, 2013

Sep. 30, 2014

Dec. 31, 2013

Mar. 02, 2011

In Thousands, unless otherwise specified

Senior Credit Facility

3.25% Convertible Senior Notes due 2026

3.25% Convertible Senior Notes due 2026

5.0% Convertible Senior Notes due 2029

5.0% Convertible Senior Notes due 2029

5.0% Convertible Senior Notes due 2029

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

8.875% Senior Notes due 2019

8.875% Senior Notes due 2019

8.875% Senior Notes due 2019

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Principal

$615,166

$494,650

$118,000

$429

$429

$51,816

[1]

$51,816

[1]

$218,500

$169,921

[2]

$167,405

[2]

$57,000

$109,250

$275,000

$275,000

$275,000

Debt Instrument, Carrying Amount

609,464

485,529

118,000

429

429

51,816

[1]

49,663

[1]

'

164,219

[2]

160,437

[2]

'

'

275,000

275,000

'

Debt Instrument, Fair Value

$626,262

[3]

$512,041

[3]

$118,000

[3]

$341

[3]

$429

[3]

$51,298

[1],[3]

$51,686

[1],[3]

'

$176,123

[2],[3]

$171,863

[2],[3]

'

'

$280,500

[3]

$288,063

[3]

'

[1]

The debt discount is amortized using the effective interest rate method based upon an original five year term through October 1, 2014. The debt discount was zero and $2.1 million as of September 30, 2014 and December 31, 2013, respectively.

[2]

The debt discount is 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 debt discount was $5.7 million and $7.0 million as of September 30, 2014 and December 31, 2013, respectively.

[3]

The carrying amount for the Second Amended and Restated Credit Agreement represents fair value as the variable interest rates are reflective of current market conditions. The fair value of the notes was obtained by direct market quotes within Level 1 of the fair value hierarchy.

Components_of_Debt_Parenthetic

Components of Debt (Parenthetical) (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]	'	'
Debt discount	$7.50	'
5.0% Convertible Senior Notes due 2029	'	'
Debt Instrument [Line Items]	'	'
Period of amortization on debt instrument	'5 years	'
Debt discount	0	2.1
Debt discount amortization end date	1-Oct-14	'
5.0% Convertible Senior Notes due 2032	'	'
Debt Instrument [Line Items]	'	'
Period of amortization on debt instrument	'4 years	'
Debt discount	$5.70	$7
Debt discount amortization end date	1-Oct-17	'

Summary_of_Total_Interest_Expe

Summary of Total Interest Expense and Effective Interest Rate on Debt (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Debt Instrument [Line Items]	'	'	'	'
Interest Expense	$12,645	$12,679	$36,274	$39,079
Senior Credit Facility	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'
Interest Expense	1,332	894	2,368	3,235
Effective Interest Rate	5.30%	5.90%	6.90%	4.90%
3.25% Convertible Senior Notes due 2026	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'
Interest Expense	4	3	11	10
Effective Interest Rate	3.30%	3.30%	3.30%	3.30%
5.0% Convertible Senior Notes due 2029	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'
Interest Expense	1,431	4,578	4,280	15,976
Effective Interest Rate	11.10%	11.10%	11.30%	11.30%
5.0% Convertible Senior Notes due 2032	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'
Interest Expense	3,551	877	10,634	877
Effective Interest Rate	8.70%	8.70%	8.70%	8.70%
8.875% Senior Notes due 2019	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'
Interest Expense	$6,327	$6,327	$18,981	$18,981
Effective Interest Rate	9.20%	9.20%	9.20%	9.20%

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

9 Months Ended

Sep. 30, 2014

Dec. 31, 2013

Aug. 26, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 22, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Mar. 02, 2011

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2009

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Oct. 01, 2013

Aug. 26, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Subsequent Event

Minimum

Scenario, Forecast

Senior Credit Facility

Bank Base Rate

Libor

8.875% Senior Notes due 2019

8.875% Senior Notes due 2019

8.875% Senior Notes due 2019

8.875% Senior Notes due 2019

8.875% Senior Notes due 2019

8.875% Senior Notes due 2019

5.0% Convertible Senior Notes due 2029

5.0% Convertible Senior Notes due 2029

5.0% Convertible Senior Notes due 2029

5.0% Convertible Senior Notes due 2029

5.0% Convertible Senior Notes due 2029

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

5.0% Convertible Senior Notes due 2032

3.25% Convertible Senior Notes due 2026

3.25% Convertible Senior Notes due 2026

3.25% Convertible Senior Notes due 2026

3.25% Convertible Senior Notes due 2026

Scenario 1

Scenario 2

Scenario 3

Minimum

Maximum

Minimum

Option One

Option Two

Option Three

Scenario 1

Scenario 2

Debt [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total lender commitments under the Senior Credit Facility borrowing base

'

'

'

'

'

'

$600,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior credit facility, current borrowing capacity

'

'

'

'

'

'

250,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument rate minimum

'

'

'

'

'

'

'

1.00%

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument rate maximum

'

'

'

'

'

'

'

1.75%

2.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount outstanding under the senior credit facility

'

'

'

'

'

'

118,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowing base upon closing of sale of non-core assets

'

'

'

'

'

230,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Adjusted current ratio current assets

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Adjusted current ratio current liabilities

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest coverage rate ratio of EBITDAX

'

'

'

'

2.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest coverage rate ratio cash interest expense

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt no greater than EBITDAX

4

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, principal amount

615,166,000

494,650,000

'

'

'

'

118,000,000

'

'

275,000,000

275,000,000

275,000,000

'

'

'

51,816,000

[1]

51,816,000

[1]

218,500,000

'

'

169,921,000

[2]

169,921,000

[2]

167,405,000

[2]

57,000,000

109,250,000

'

'

'

'

429,000

429,000

'

'

Debt instrument interest rate

'

'

'

'

'

'

'

'

'

8.88%

'

8.88%

'

'

'

5.00%

'

'

'

'

5.00%

5.00%

'

'

'

'

'

'

'

3.25%

'

'

'

Debt instrument maturity date

'

'

'

'

'

'

'

'

'

15-Mar-19

'

'

'

'

'

1-Oct-29

'

'

'

'

'

'

1-Oct-32

'

'

'

'

'

'

'

'

'

'

Redeemable redemption price, percentage of principal amount

'

'

'

'

'

'

'

'

'

'

'

'

104.44%

102.22%

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, redemption date

'

'

'

'

'

'

'

'

'

'

'

'

15-Mar-15

15-Mar-16

15-Mar-17

'

'

'

'

'

'

'

'

'

'

1-Oct-16

1-Oct-17

1-Oct-22

1-Oct-27

'

'

1-Dec-16

1-Dec-21

Current portion of debt

45,124,000

49,663,000

'

'

'

'

'

'

'

'

'

'

'

'

'

45,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt

564,340,000

435,866,000

'

'

'

'

'

'

'

'

'

'

'

'

'

6,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of cash released from escrow account

'

'

'

6,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notes to shares converted

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

28.8534

'

'

'

'

'

28.8534

'

'

'

'

'

'

'

15.1653

'

'

'

Base conversion price per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$34.66

'

'

'

'

$34.66

$34.66

'

'

'

'

'

'

'

$65.94

'

'

'

Conversion price, percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

135.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of trading days in the period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'20 days

'30 days

'

'

'

'

'

'

'

'

'

'

'

'

'

Period of amortization on debt instrument

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'4 years

'

'

'

'

'

'

'

'

'

'

'

Principal amount of notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000

'

'

'

'

'

'

'

1,000

'

'

'

Accretion rate

'

'

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption price, percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, accretion start date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

26-Aug-13

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, accretion end date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1-Oct-17

'

'

'

'

'

'

'

'

'

'

'

Accretion amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

800,000

'

'

'

'

'

'

'

'

'

'

'

'

Common stock trading price cap before conversion

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$45.06

'

'

'

'

'

'

'

Conversion price percentage before conversion

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

130.00%

'

'

'

'

'

'

'

Effective interest rate, debt instrument

8.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of debt portion

158,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt discount

7,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

2,100,000

'

'

'

5,700,000

5,700,000

7,000,000

'

'

'

'

'

'

'

'

'

'

Debt discount amortization beginning date

1-Oct-17

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity component of debt

24,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unamortized debt discount

5,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate carrying amount

$609,464,000

$485,529,000

'

'

'

'

$118,000,000

'

'

$275,000,000

$275,000,000

'

'

'

'

$51,816,000

[1]

$49,663,000

[1]

'

'

'

$164,219,000

[2]

$164,219,000

[2]

$160,437,000

[2]

'

'

'

'

'

'

$429,000

$429,000

'

'

Incremental share factor

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.6762

'

'

'

[1]

The debt discount is amortized using the effective interest rate method based upon an original five year term through October 1, 2014. The debt discount was zero and $2.1 million as of September 30, 2014 and December 31, 2013, respectively.

[2]

The debt discount is 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 debt discount was $5.7 million and $7.0 million as of September 30, 2014 and December 31, 2013, respectively.

Computations_of_Basic_and_Dilu

Computations of Basic and Diluted Income (Loss) Per Share (Detail) (USD $)	3 Months Ended				9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Basic and Diluted loss per share:	'		'		'		'
Net loss applicable to common stock	($87,142)		($32,790)		($149,601)		($82,864)
Weighted average shares of common stock outstanding	44,430		36,732		44,337		36,706
Basic and Diluted loss per share (1) (2) (3)	($1.96)	[1],[2],[3]	($0.89)	[1],[2],[3]	($3.37)	[1],[2],[3]	($2.26)	[1],[2],[3]
[1]	(1) Common shares issuable upon assumed conversion of convertible preferred stock or dividends paid were not presented as they would have been anti-dilutive. 3,588 3,588 3,588 3,588
[2]	(2) Common shares issuable upon assumed conversion of the 2026 Notes, 2029 Notes and 2032 Notes or interest paid were not presented as they would have been anti-dilutive. 4,997 6,311 4,997 6,311
[3]	(3) Common shares issuable on assumed conversion of restricted stock and employee stock option were not included in the computation of diluted loss per common share since their inclusion would have been anti-dilutive. 640 771 593 540

Computations_of_Basic_and_Dilu1

Computations of Basic and Diluted Income (Loss) Per Share (Parenthetical) (Detail)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Assumed Conversion of Preferred Stock	'	'	'	'
Earnings Per Share Disclosure [Line Items]	'	'	'	'
Common shares issuable upon assumed conversion	3,588	3,588	3,588	3,588
Assumed Conversion of Notes	'	'	'	'
Earnings Per Share Disclosure [Line Items]	'	'	'	'
Common shares issuable upon assumed conversion	4,997	6,311	4,997	6,311
Assumed Conversion of Restricted Stock and Employee Stock Options	'	'	'	'
Earnings Per Share Disclosure [Line Items]	'	'	'	'
Common shares issuable upon assumed conversion	640	771	593	540

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2009
Income Tax Disclosure [Abstract]	'	'	'	'	'	'
Income tax expense or benefit	$0	$0	$0	$0	'	'
Deferred tax assets, net	'	'	'	'	'	0
Unrecognized tax benefits	$0	'	$0	'	$0	'

Summary_of_Realized_and_Unreal

Summary of Realized and Unrealized Gains and Losses on Derivatives (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'	'	'	'
Realized gain/(loss) on oil and natural gas derivatives	$227	($3,647)	($5,583)	($3,412)
Unrealized gain/(loss) on oil and natural gas derivatives	20,121	-5,112	7,617	3,762
Total gain/(loss) on oil and natural gas derivatives	$20,348	($8,759)	$2,034	$350

Derivative_Activities_Addition

Derivative Activities - Additional Information (Detail) (USD $)	Sep. 30, 2014
In Millions, unless otherwise specified
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
Derivative fair value	$10.30

Outstanding_Commodity_Derivati

Outstanding Commodity Derivative Contracts (Detail) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

In Thousands, unless otherwise specified

Oil Swap (BBL)

2014

2014

2014

2014

2014

2014

2014

2014

2014

2014

2014

2014

2014

2015

2015

2015

2015

2015

2015

2015

2015

2015

2015

2016

2016

2016

2016

2016

Natural Gas Swaps (MMBtu)

Natural Gas Swaps (MMBtu)

Natural Gas Swaps (MMBtu)

Oil Swap (BBL)

Oil Swap (BBL)

Oil Swap (BBL)

Oil Swap (BBL)

Not Designated as Hedging Instrument

Not Designated as Hedging Instrument

Not Designated as Hedging Instrument

Not Designated as Hedging Instrument

Not Designated as Hedging Instrument

Not Designated as Hedging Instrument

Natural Gas calls (MMBtu)

Natural Gas calls (MMBtu)

Natural Gas calls (MMBtu)

Oil Swap (BBL)

Oil Swap (BBL)

Oil Swap (BBL)

Not Designated as Hedging Instrument

Not Designated as Hedging Instrument

Not Designated as Hedging Instrument

Not Designated as Hedging Instrument

Natural Gas calls (MMBtu)

Natural Gas calls (MMBtu)

Natural Gas calls (MMBtu)

Not Designated as Hedging Instrument

Not Designated as Hedging Instrument

Minimum

Maximum

Minimum

Maximum

LLS Argus

Daily

Daily

Daily

Annual

Annual

Annual

Minimum

Maximum

LLS Argus

LLS Argus

LLS Argus

Daily

Daily

Annual

Annual

Minimum

Maximum

Daily

Annual

Natural Gas Swaps (MMBtu)

Oil Swap (BBL)

Oil Swap (BBL)

Natural Gas Swaps (MMBtu)

Oil Swap (BBL)

Oil Swap (BBL)

Minimum

Maximum

Natural Gas calls (MMBtu)

Oil Swap (BBL)

Natural Gas calls (MMBtu)

Oil Swap (BBL)

Natural Gas calls (MMBtu)

Natural Gas calls (MMBtu)

MMBTU

bbl

LLS Argus

MMBTU

bbl

LLS Argus

MMBTU

LLS Argus

MMBTU

LLS Argus

MMBTU

MMBTU

bbl

bbl

bbl

bbl

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Volume

'

'

'

'

'

'

'

'

'

'

30,000

'

'

2,760,000

'

'

'

'

'

'

'

'

20,000

'

7,300,000

'

'

'

'

20,000

7,320,000

Volume

'

'

'

'

'

'

'

'

'

'

'

2,500

1,300

'

230,000

119,600

'

'

'

'

'

'

'

3,500

'

1,277,500

'

'

'

'

'

Fixed price, swaps

'

'

'

'

4.18

5.06

'

90.95

98.02

94.55

'

'

'

'

'

'

'

'

'

'

94.55

98.1

'

'

'

'

'

'

'

'

'

Fixed Price, calls

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.05

5.06

'

'

'

'

'

'

'

'

5.05

5.06

'

'

Fair Value at September 30, 2014

$8,489

$871

$8,489

$1,825

'

'

$578

'

'

$306

'

'

'

'

'

'

($734)

'

'

$7,615

'

'

'

'

'

'

($1,101)

'

'

'

'

Derivative_Assets_and_Liabilit

Derivative Assets and Liabilities Recorded at Fair Value (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Derivative [Line Items]	'	'
Current Assets Commodity Derivatives	$7,669	$6,187
Non-current Assets Commodity Derivatives	2,167	1,396
Current Liabilities Commodity Derivatives	0	-4,341
Non-current Liabilities Commodity Derivatives	-1,347	-2,371
Total	8,489	871
Fair Value, Inputs, Level 1	'	'
Derivative [Line Items]	'	'
Current Liabilities Commodity Derivatives	0	'
Fair Value, Inputs, Level 2	'	'
Derivative [Line Items]	'	'
Current Assets Commodity Derivatives	7,669	'
Non-current Assets Commodity Derivatives	2,167	'
Current Liabilities Commodity Derivatives	0	'
Non-current Liabilities Commodity Derivatives	-1,347	'
Total	8,489	'
Fair Value, Inputs, Level 3	'	'
Derivative [Line Items]	'	'
Current Liabilities Commodity Derivatives	$0	'

Reconciliation_of_Gross_Amount

Reconciliation of Gross Amounts to Amounts as Presented on Statement of Financial Position (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Derivative [Line Items]	'	'
Derivative Current Asset	$7,669	$6,187
Derivative Non-current Asset	2,167	1,396
Derivative Current Liability	0	-4,341
Derivative Non-current Liability	-1,347	-2,371
Total	8,489	871
Gross Amount	'	'
Derivative [Line Items]	'	'
Derivative Current Asset	8,157	6,658
Derivative Non-current Asset	2,167	1,396
Derivative Current Liability	-488	-4,812
Derivative Non-current Liability	-1,347	-2,371
Total	8,489	871
Amount Offset	'	'
Derivative [Line Items]	'	'
Derivative Current Asset	-488	-471
Derivative Current Liability	$488	$471

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (USD $)	0 Months Ended
In Millions, unless otherwise specified	Nov. 03, 2014
Subsequent Events [Abstract]	'
purchase and sell agreement amount	$61
Effective agreement date	1-Jul-14
Estimated closing date	22-Dec-14