Quicksilver Resources (KWK) 10-Q 12 May 14 2014 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 30, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Entity Registrant Name	'QUICKSILVER RESOURCES INC	'
Entity Central Index Key	'0001060990	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	177,335,940

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Revenue	'		'
Production	$115,676		$132,614
Sales of purchased natural gas	17,222		16,558
Net derivative losses	-42,033		-31,369
Other	921		900
Total revenue	91,786		118,703
Operating expense	'		'
Lease operating	18,757		24,895
Gathering, processing and transportation	32,783		39,824
Production and ad valorem taxes	4,184		5,484
Costs of purchased natural gas	17,192		16,518
Depletion, depreciation and accretion	13,955		18,256
General and administrative	15,320		16,163
Other operating	649		1,437
Total expense	102,840		122,577
Operating income (loss)	-11,054		-3,874
Other income - net	69		-150
Fortune Creek accretion	-4,401		-4,845
Interest expense	-40,796		-43,942
Income (loss) before income taxes	-56,182		-52,811
Income tax (expense) benefit	-2,651		-6,896
Net income (loss)	-58,833		-59,707
Net Income (Loss) Attributable to Parent	-58,833		-59,707
Reclassification adjustments related to settlements of derivative contracts into production revenue- net of income tax	-7,850		-14,755
Foreign currency translation adjustment	-4,255		301
Other comprehensive income (loss)	-12,105		-14,454
Comprehensive income (loss)	($70,938)		($74,161)
Earnings (loss) per common share - basic	($0.34)		($0.35)
Earnings (loss) per common share - diluted	($0.34)	[1]	($0.35)	[1]
[1]	For the three months ended March 31, 2014, 6.8 million shares associated with our stock options and 0.3 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the three months ended March 31, 2013, 5.0 million shares associated with our stock options and 0.9 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations.

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets	'	'
Cash	$69,254	$89,103
Marketable Securities, Current	97,441	166,343
Cash, Cash Equivalents, and Short-term Investments	166,695	255,446
Accounts receivable - net of allowance for doubtful accounts	63,426	58,645
Derivative assets at fair value	43,379	57,523
Other current assets	20,746	22,346
Total current assets	294,246	393,960
Property, plant and equipment - net	'	'
Oil and gas properties, full cost method (including unevaluated costs of $217,481 and $221,605, respectively)	662,393	640,443
Property, Plant and Equipment, Other, Net	212,725	220,362
Property, plant and equipment, net of accumulated depletion and depreciation	875,118	860,805
Derivative assets at fair value	50,880	73,357
Other assets	39,583	41,604
Total assets	1,259,827	1,369,726
Current liabilities	'	'
Accounts payable	20,782	28,822
Accrued liabilities	97,506	102,850
Derivative liabilities at fair value	9,540	3,125
Total current liabilities	127,828	134,797
Long-term debt	1,986,378	1,988,946
Partnership liability	96,328	126,132
Asset retirement obligations	105,235	106,256
Derivative liabilities at fair value	181	323
Other liabilities	19,242	19,242
Commitments and contingencies (Note 7)	'	'
Stockholders' equity	'	'
Preferred stock, par value $0.01, 10,000,000 shares authorized, none outstanding	0	0
Common stock, $0.01 par value, 400,000,000 shares authorized, and 184,761,865 and 183,994,879 shares issued, respectively	1,848	1,840
Paid in capital in excess of par value	773,898	770,092
Treasury stock of 7,404,835 and 6,698,640 shares, respectively	-53,693	-51,422
Accumulated other comprehensive income	97,776	109,881
Retained deficit	-1,895,194	-1,836,361
Total stockholders' equity	-1,075,365	-1,005,970
Total liabilities and stockholders' equity	$1,259,827	$1,369,726

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, par value	$0.01	$0.01
Unevaluated costs of oil and gas properties	$217,481	$221,605
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	184,761,865	183,994,879
Treasury stock, shares	7,404,835	6,698,640

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Equity (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Stockholders' Equity, Total [Member]
In Thousands
Balances at Dec. 31, 2012	'	$1,790	$751,394	($49,495)	$161,493	($1,997,979)	($1,132,797)
Net income (loss)	-59,707	'	'	'	'	-59,707	-59,707
Hedge derivative contract settlements reclassified into earnings from AOCI, net of income tax	'	'	'	'	-14,755	'	-14,755
Foreign currency translation adjustment	301	'	'	'	301	'	301
Issuance and vesting of stock compensation	'	39	4,994	-1,007	'	'	4,026
Balances at Mar. 31, 2013	'	1,829	756,388	-50,502	147,039	-2,057,686	-1,202,932
Balances at Dec. 31, 2013	'	1,840	770,092	-51,422	109,881	-1,836,361	-1,005,970
Net income (loss)	-58,833	'	'	'	'	-58,833	-58,833
Hedge derivative contract settlements reclassified into earnings from AOCI, net of income tax	'	'	'	'	-7,850	'	-7,850
Foreign currency translation adjustment	-4,255	'	'	'	-4,255	'	-4,255
Issuance and vesting of stock compensation	'	8	3,806	-2,271	'	'	1,543
Balances at Mar. 31, 2014	'	$1,848	$773,898	($53,693)	$97,776	($1,895,194)	($1,075,365)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements Of Equity (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement of Stockholders' Equity [Abstract]	'	'
Income tax effect related to hedge derivative contract settlements reclassified into earnings from accumulated other comprehensive income	($2,426)	($6,944)
Income tax effect related to net change in derivative fair value	$0	$0

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Operating activities:	'	'
Net income (loss)	$58,833	$59,707
Adjustments to reconcile net income (loss) to net cash provided by operating activities:	'	'
Depletion, depreciation and accretion	13,955	18,256
Deferred income tax expense (benefit)	2,426	6,596
Non-cash loss from hedging and derivative activities	32,555	43,920
Stock-based compensation	3,814	5,033
Non-cash interest expense	2,665	1,858
Fortune Creek accretion	4,401	4,845
Other	-407	925
Changes in assets and liabilities	'	'
Accounts receivable	-13,220	6,730
Prepaid expenses and other assets	518	-190
Accounts payable	-10,805	-17,299
Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable	8,221	354
Accrued and other liabilities	-5,274	-25,715
Net cash flow provided by (used in) by operating activities	-19,984	-14,394
Investing activities:	'	'
Purchases of property, plant and equipment	-38,729	-27,442
Proceeds from sale of properties and equipment	1,026	608
Payments to acquire marketable securities	-55,682	0
Proceeds from Sale and Maturity of Held-to-maturity Securities	124,694	0
Net cash provided by (used in) investing activities	31,309	-26,834
Financing activities:	'	'
Issuance of debt	0	54,040
Repayments of debt	0	-4,011
Debt issuance costs paid	-162	0
Distribution of Fortune Creek Partnership funds	-29,472	-3,198
Purchase of treasury stock	-2,271	-1,007
Net cash provided by financing activities	-31,905	45,824
Effect of exchange rate changes in cash	731	303
Net increase (decrease) in cash	-19,849	4,899
Cash at beginning of period	89,103	4,951
Cash at end of period	$69,254	$9,850

Accounting_Policies_And_Disclo

Accounting Policies And Disclosures	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Accounting Policies And Disclosures	'
	ACCOUNTING POLICIES, DISCLOSURES AND NATURE OF OPERATIONS
	The accompanying condensed consolidated interim financial statements have not been audited. In management’s opinion, the accompanying condensed consolidated interim financial statements contain all adjustments necessary to fairly present our financial position as of March 31, 2014 and our results of operations and cash flows for the periods presented. All such adjustments are of a normal recurring nature unless otherwise noted. The results for interim periods are not necessarily indicative of annual results.
	The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of certain assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during each reporting period. We believe our estimates and assumptions are reasonable; however, such estimates and assumptions are subject to a number of risks and uncertainties, which may cause actual results to differ materially from management’s estimates.
	Certain disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted. Accordingly, these financial statements should be read in conjunction with our consolidated financial statements and notes thereto included in our 2013 Annual Report on Form 10-K.
	We project that we will comply with the financial maintenance covenants associated with our Combined Credit Agreements through the end of 2014, however we do not expect to exceed the required levels by a significant margin, and we may have to reduce costs in response to commodity price changes or other factors should they arise. In addition, due to more stringent financial maintenance covenants that take effect in 2015, absent an improvement in natural gas and NGL prices, significant deleveraging from a strategic transaction, reduced interest costs on our debt through refinancing or significant reductions to our operating costs, we may not comply with our interest coverage requirement under our Combined Credit Agreements and expect that we would need to seek additional covenant relief under the Combined Credit Agreements. We can provide no assurance that we would be successful in obtaining waivers or amendments. We are currently pursuing a transaction involving our Horn River Asset. Any transaction involving our Horn River Asset is likely to result in cash proceeds to us and a reduction in our capital expenditures and liquidity requirements, however we may be unsuccessful in completing such transaction.
	Recently Issued Accounting Standards
	Accounting standards-setting organizations frequently issue new or revised accounting rules. We regularly review all new pronouncements to determine their impact, if any, on our financial statements. No pronouncements materially affecting our financial statements have been issued since the filing of our 2013 Annual Report on Form 10-K.

Divestitures

Divestitures	3 Months Ended
	Mar. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Divestitures	'
	DIVESTITURES
	In May 2014, we completed the sale of our Niobrara Asset to Southwestern Energy Company for cash proceeds of $93.5 million. We expect that the Southwestern Transaction will not represent a significant disposal of reserves under GAAP, therefore we will reduce the balance of U.S. oil and gas properties by the amount of these proceeds and we will not recognize a gain or a loss.
	In April 2013, we sold an undivided 25% interest in our Barnett Shale Asset to TGBR for a purchase price of $485 million. The effective date of the transaction was September 1, 2012. The purchase price was subject to customary price adjustments, which resulted in a final purchase price of $464.0 million. We recognized a gain of $339.3 million before consideration of income taxes as a result of this transaction based on our determination that the Tokyo Gas Transaction represented a significant disposal of reserves. Our U.S. oil and gas properties were reduced by $110.7 million as a result of the Tokyo Gas Transaction.
	Note 3 to the consolidated financial statements in our 2013 Annual Report on Form 10-K contains additional information on other divestitures.

Derivatives_And_Fair_Value_Mea

Derivatives And Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
Credit Risk Derivatives, at Fair Value, Net [Abstract]	'
Derivatives And Fair Value Measurements	'
	DERIVATIVES, MARKETABLE SECURITIES AND FAIR VALUE MEASUREMENTS
	The following table categorizes our commodity derivative instruments based upon the level of the inputs used in estimating the fair value:
		Asset Derivatives							Liability Derivatives
		31-Mar-14				31-Dec-13			31-Mar-14			31-Dec-13
		(in thousands)							(in thousands)
	Level 2 derivative instruments	$	85,630			$	107,395		$	8,293		$	3,448
	Level 3 derivative instruments	8,629				23,485			1,428			—
	Total	$	94,259			$	130,880		$	9,721		$	3,448
	The fair value of “Level 2” derivative instruments included in these disclosures was estimated using inputs quoted in active markets for the periods covered by the derivatives. The fair value of derivative instruments designated as “Level 3” was estimated using prices quoted in markets where there is insufficient market activity for consideration as “Level 2” instruments. Currently, only our natural gas derivatives with an original tenure of 10 years utilize “Level 3” inputs, primarily due to comparatively less market data available for the later portion of their term compared with our other shorter term derivatives. The fair value of both the “Level 2” and the “Level 3” assets and liabilities are determined using a discounted cash flow model using the terms of the derivative instrument, market prices for the periods covered by the derivatives, and the credit adjusted risk-free interest rates. The “Level 3” unobservable input is the market prices for natural gas for the period from 2018 to 2021, as there is not an active market for that period of time. These unobservable inputs included within the fair value calculation range from $4.01 to $5.14 and are based upon prices quoted in active markets for the period of time available and applying the differential from this period of time to the market prices for the later years in the term.
	The following table identifies the changes in “Level 3” net asset derivative fair values for the periods indicated:
		For the Three Months Ended
		March 31,
		2014				2013
		(In thousands)
	Balance at beginning of period	$	23,485			$	(4,931	)
	Total gains (losses) for the period:
	Unrealized loss on derivatives	(17,883		)		(18		)
	Settlements in net derivative gains (losses)	1,599				(4,088		)
	Balance at end of period	$	7,201			$	(9,037	)
	Total losses included in net derivative losses attributable to the change in unrealized losses related to assets still held at the reporting date	$	(15,576	)		$	(92	)
	Commodity Price Derivatives
	As of March 31, 2014, we had natural gas and NGL swaps as follows:
	Production		Daily Production
	Year		Volume
			Natural Gas		NGL		Natural Gas Basis Swaps
			MMcfd		MBbld		MMcfd
	Remaining 2014 (1)		170		4		40
	2015		150		—		—
	2016-2021		40		—		—
	(1)	Our 2014 NGL derivatives end in September. Our natural gas derivatives and AECO to NYMEX natural gas basis swaps are in place for the whole of 2014.
	Effective December 31, 2012, we discontinued the use of hedge accounting. Changes in value subsequent to this date are recognized in net derivative gains (losses) in the period in which they occur. The net deferred hedge gain that was included in AOCI as of December 31, 2012 is being released into revenue from natural gas, NGL and oil production over the original term of the hedging relationship. Gains from the effective portion of derivative assets and liabilities held in AOCI expected to be reclassified into earnings during the following twelve months will result in production revenue of $23.9 million net of income taxes.
	Interest Rate Derivatives
	In 2010, we executed early settlements of our interest rate swaps that were designated as fair value hedges. Upon the early settlements, we recorded the resulting gain as a fair value adjustment to our debt and began to recognize the deferred gain as a reduction of interest expense over the lives of the respective notes. During the three months ended March 31, 2014 and 2013, we recognized $0.5 million and $1.3 million, respectively, of those deferred gains as a reduction of interest expense. Gains from the effective portion of these interest rate swaps expected to reduce interest expense during the following twelve months are $2.1 million.
	Fair Value Disclosures
	The estimated fair value of our derivative instruments at March 31, 2014 and December 31, 2013 were as follows:
		Asset Derivatives								Liability Derivatives
		31-Mar-14				31-Dec-13				31-Mar-14			31-Dec-13
		(In thousands)								(In thousands)
	Derivatives not designated as hedges:
	Commodity contracts reported in:
	Current derivative assets	$	50,012			$	60,063			$	6,633		$	2,540
	Noncurrent derivative assets	90,132				105,315				39,252			31,958
	Current derivative liabilities	—				—				9,540			3,125
	Noncurrent derivative liabilities	254				—				435			323
	Total derivatives not designated as hedges	$	140,398			$	165,378			$	55,860		$	37,946
	Derivative assets and liabilities shown in the table above are presented as gross assets and liabilities, without regard to master netting arrangements, which are considered in the presentation of derivative assets and liabilities in the accompanying condensed consolidated balance sheets. The change in carrying value of our commodity price derivatives since December 31, 2013 principally resulted from the overall increase in market prices for natural gas relative to the prices in our open derivative instruments, offset by settlements during the period.
	Financial instruments not carried at fair value
	Carrying values and fair values of financial instruments that are not carried at fair value in the consolidated balance sheets as of March 31, 2014 and December 31, 2013 are included in Note 5.
	Investments
	We hold certain short-term marketable securities related to interest bearing time deposits and commercial paper. These held-to-maturity marketable securities are included in Cash and Cash Equivalents if the maturities at the time we made the investment were three months or less. For maturities greater than three months but less than a year, the marketable securities are included in current Marketable Securities. We did not sell or transfer any of our marketable securities during 2014 and do not anticipate selling or transferring these investments before their maturity date. At March 31, 2014, we had the following marketable securities:
		Amortized Cost				Gross Unrealized Gains			Gross Unrealized Losses			Fair Market Value
		(In thousands)
	Marketable securities (held-to-maturity)
	Time deposits	$	3,508			$	—		$	(9	)	$	3,499
	Commercial paper	93,933				15			(5		)	93,943
	Marketable securities	$	97,441			$	15		$	(14	)	$	97,442
	We had no marketable securities at March 31, 2013.

Property_Plant_And_Equipment

Property, Plant And Equipment	3 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Property, Plant And Equipment	'
	PROPERTY, PLANT AND EQUIPMENT
	Property, plant and equipment consisted of the following:
		31-Mar-14			31-Dec-13
		(In thousands)
	Oil and gas properties
	Subject to depletion	$	5,684,433		$	5,687,557
	Unevaluated costs	217,481			221,605
	Accumulated depletion	(5,239,521		)	(5,268,719		)
	Net oil and gas properties	662,393			640,443
	Other plant and equipment
	Pipelines and processing facilities	341,874			347,093
	General properties	71,331			72,125
	Accumulated depreciation	(200,480		)	(198,856		)
	Net other property and equipment	212,725			220,362
	Property, plant and equipment, net of accumulated depletion and depreciation	$	875,118		$	860,805

LongTerm_Debt

Long-Term Debt	3 Months Ended
	Mar. 31, 2014
Long-term Debt, Other Disclosures [Abstract]	'
Long-Term Debt	'
	LONG-TERM DEBT
	Long-term debt consisted of the following:
		31-Mar-14			31-Dec-13
		(in thousands)
	Combined Credit Agreements	$	207,746		$	211,200
	Second Lien Term Loan, net of unamortized discount	608,221			607,572
	Second Lien Notes due 2019, net of unamortized discount	194,631			194,423
	Senior notes due 2015, net of unamortized discount	10,478			10,472
	Senior notes due 2016, net of unamortized discount	8,056			8,044
	Senior notes due 2019, net of unamortized discount	293,405			293,243
	Senior notes due 2021, net of unamortized discount	309,530			309,190
	Senior subordinated notes due 2016	350,000			350,000
	Total debt	1,982,067			1,984,144
	Unamortized deferred gain-terminated interest rate swaps	4,311			4,802
	Long-term debt	$	1,986,378		$	1,988,946
	Combined Credit Agreements
	The Combined Credit Agreements’ global borrowing base was $350 million and the global letter of credit capacity was $280 million as of March 31, 2014. At March 31, 2014, we had $99.6 million available under the Combined Credit Agreements.
	In April 2014, our redetermined global borrowing base under our Combined Credit Agreements was $325 million. Further, the Combined Credit Agreements were amended changing the definition of EBITDAX. Additionally, we permanently reduced the aggregate maximum credit amounts under the Combined Credit Agreements from $1.75 billion to $650 million.
	Senior Notes due 2015 and Senior Notes due 2016
	In April 2014, we redeemed all remaining outstanding notes under our Senior Notes due 2015 and Senior Notes due 2016. Our Senior Notes due 2015 were redeemed at 101.938% of the principal amount plus accrued and unpaid interest representing a total payment of $10.9 million and our Senior Notes due 2016 were redeemed at 105.875% of the principal amount plus accrued and unpaid interest representing a total payment of $8.9 million.
	Indenture Restrictions
	We have an incurrence test under our indentures applicable to debt, restricted payments, mergers and consolidations and designation of unrestricted subsidiaries that requires EBITDA to exceed interest expense by 2.25 times. At March 31, 2014, we did not meet this test and, as a result, we are limited in our ability to, among other things, incur additional debt, except for specific baskets. We do retain, however, the ability to utilize the full borrowing capacity under our Combined Credit Agreements and to refinance existing debt. Not meeting this ratio does not represent an event of default under our debt. We cannot predict when or if we will meet the incurrence test.
	We retained a portion of the cash received from our asset sales. Our indentures require us to reinvest or repay senior debt with net cash proceeds from asset sales within one year.
	Summary of All Outstanding Debt
	The following table summarizes certain significant aspects of our long-term debt outstanding at March 31, 2014.
			Priority on Collateral and Structural Seniority (1)
			Highest								Lowest
			priority								priority
			First Lien	Second Lien			Senior Unsecured				Senior Subordinated
			Combined Credit	Second Lien Term Loan		Second Lien Notes due 2019	2015	2016	2019	2021	Senior
			Agreements				Senior Notes	Senior Notes	Senior Notes	Senior Notes	Subordinated Notes
	Principal amount (1) (2)		$350 million	$625 million		$200 million	$11 million	$8 million	$298 million	$325 million	$350 million
	Scheduled maturity date (3)		September 6, 2016	June 21, 2019		June 21, 2019	August 1, 2015	January 1, 2016	August 15, 2019	July 1, 2021	April 1, 2016
	Interest rate on outstanding borrowings at March 31, 2014 (4)		3.99%	7.00%		7.00%	8.25%	11.75%	9.13%	11.00%	7.12%
	Base interest rate options (5) (6)		LIBOR, ABR, CDOR	LIBOR floor of 1.25%; ABR floor of 2.25%		LIBOR floor of 1.25%	N/A	N/A	N/A	N/A	N/A
	Financial covenants (7) (9)		- Minimum current ratio of 1.0	N/A		N/A	N/A	N/A	N/A	N/A	N/A
			- Minimum EBITDA to cash interest expense ratio of 1.10
			- Maximum senior secured debt leverage ratio of 2.0
	Significant restrictive covenants (8)(9)		- Incurrence of debt	- Incurrence of debt		- Incurrence of debt	- Asset sales	- Asset sales	- Incurrence of debt	- Incurrence of debt	- Incurrence of debt
			- Incurrence of liens	- Incurrence of liens and 1st lien cap		- Incurrence of liens and 1st lien cap			- Incurrence of liens	- Incurrence of liens	- Incurrence of liens
			- Payment of dividends	-Payment of dividends		-Payment of dividends			-Payment of dividends	-Payment of dividends	-Payment of dividends
			- Equity purchases	- Equity purchases		- Equity purchases			- Equity purchases	- Equity purchases	- Equity purchases
			- Asset sales	- Asset sales		- Asset sales			- Asset sales	- Asset sales	- Asset sales
			- Affiliate transactions	- Affiliate transactions		- Affiliate transactions			- Affiliate transactions	- Affiliate transactions	- Affiliate transactions
			- Limitations on derivatives and investments
	Optional redemption (9)		Any time	Any time, subject to re-pricing event		Any time, subject to re-pricing event	August 1,	July 1,	August 15,	July 1,	April 1,
				June 21,		June 21,	2013: 101.938	2013: 105.875	2014: 104.563	2019: 102.000	2013: 101.188
				2014: 102		2014: 102	2014: par	2014: 102.938	2015: 103.042	2020: par	2014: par
				2015: 101		2015: 101		2015: par	2016: 101.521
									2017: par
	Make-whole redemption (9)		N/A	N/A		N/A	N/A	N/A	Callable prior	Callable prior	N/A
									to August 15, 2014	to July 1, 2019
									at make-whole	at make-whole
									call price of	call price of
									Treasury +50 bps	Treasury +50 bps
	Change of control (9)		Event of default	Put at 101%		Put at 101%	Put at 101%	Put at 101%	Put at 101%	Put at 101%	Put at 101%
				of principal		of principal	of principal	of principal	of principal	of principal	of principal
				plus accrued		plus accrued	plus accrued	plus accrued	plus accrued	plus accrued	plus accrued
				interest		interest	interest	interest	interest	interest	interest
	Equity clawback (9)		N/A	N/A		N/A	N/A	N/A	N/A	Redeemable until	N/A
										1-Jul-16
										at 111.00%,
										plus accrued
interest for
up to 35%
Estimated fair value (10)		$207.7 million	$610.2 million		$195.3 million	$10.7 million	$8.6 million	$294.3 million	$346.5 million	$337.5 million
(1)	Borrowings under the Amended and Restated U.S. Credit Facility, Second Lien Term Loan and Second Lien Notes due 2019 are guaranteed by certain of Quicksilver’s domestic subsidiaries and are secured (on a first priority basis with respect to the Amended and Restated U.S. Credit Facility and on a second priority basis with respect to the Second Lien Term Loan and the Second Lien Notes due 2019) by 100% of the equity interests of each of Cowtown Pipeline Management, Inc., Cowtown Pipeline Funding, Inc., Cowtown Gas Processing L.P., Cowtown Pipeline L.P., Barnett Shale Operating LLC, Silver Stream Pipeline Company LLC, QPP Parent LLC and QPP Holdings LLC (collectively, the “Domestic Pledged Equity”), 65% of the equity interests of Quicksilver Resources Canada Inc. (“Quicksilver Canada”) and Quicksilver Production Partners Operating Ltd. (with respect to the Amended and Restated U.S. Credit Facility, on a ratable basis with borrowings under the Amended and Restated Canadian Credit Facility) and the majority of Quicksilver's domestic proved oil and gas properties and related assets, (the “Domestic Pledged Property”). Borrowings under the Amended and Restated Canadian Credit Facility are guaranteed by Quicksilver and certain of its domestic subsidiaries and are secured by the Domestic Pledged Equity, the Domestic Pledged Property, 100% of the equity interests of Quicksilver Canada (65% of which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and any Canadian restricted subsidiaries, under the Amended and Restated Canadian Credit Facility, and 65% of the equity interests of Quicksilver Production Partners Operating Ltd. (which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and the majority of Quicksilver Canada's oil and gas properties and related assets. The other debt presented is based upon structural seniority and priority of payment.
(2)	The principal amount for the Combined Credit Agreements represents the global borrowing base as of March 31, 2014.
(3)	The Combined Credit Agreements are required to be repaid 91 days prior to the maturity of the 2015 Senior Notes, the 2016 Senior Notes, the 2016 Senior Subordinated Notes, the Second Lien Term Loan or the Second Lien Notes due 2019, if on the applicable date any amount of such debt remains outstanding. The Second Lien Term Loan and Second Lien Notes due 2019 are required to be repaid (1) 91 days prior to the maturity of the 2019 Senior Notes if more than $100 million of the 2019 Senior Notes remain outstanding and (2) 91 days prior to the maturity of the 2015 Senior Notes, the 2016 Senior Notes or the 2016 Senior Subordinated Notes if on the applicable date the aggregate amount of all such notes remaining outstanding is greater than $100 million.
(4)	Represents the weighted average borrowing rate payable to lenders.
(5)	Amounts outstanding under the Amended and Restated U.S. Credit Facility bear interest, at our election, at (i) adjusted LIBOR (as defined in the Amended and Restated U.S. Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii) ABR (as defined in the Amended and Restated U.S. Credit Facility), which is the greatest of (a) the prime rate announced by JPMorgan, (b) the federal funds rate plus 0.50% and (c) adjusted LIBOR for an interest period of one month plus 1.00%, plus, in each case under scenario (ii), an applicable margin between 1.75% and 2.75%. We also pay a per annum fee on the LC Exposure (as defined in the Amended and Restated U.S. Credit Facility) of all letters of credit issued under the Amended and Restated U.S. Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated U.S. Credit Facility of 0.50%.
(6)	Amounts outstanding under the Amended and Restated Canadian Credit Facility bear interest, at our election, at (i) the CDOR Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii) the Canadian Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75%, (iii) the U.S. Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75% and (iv) adjusted LIBOR (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%. We pay a per annum fee on the LC Exposure (as defined in the Amended and Restated Canadian Credit Facility) of all letters of credit issued under the Amended and Restated Canadian Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated Canadian Credit Facility of 0.50%.
(7)	The future minimum required interest coverage ratio for the Combined Credit Agreement is as follows:
Period		Interest Coverage Ratio	Period		Interest Coverage Ratio
Q2 2014		1.1	Q3 2015		1.15
Q3 2014		1.1	Q4 2015		1.2
Q4 2014		1.1	Q1 2016		1.5
Q1 2015		1.1	Q2 2016		2
Q2 2015		1.15
(8)	Our indentures require us to reinvest or repay senior debt with net cash proceeds from asset sales within one year.
(9)	The information presented in this table is qualified in all respects by reference to the full text of the covenants, provisions and related definitions contained in the documents governing the various components of our debt.
(10)	The estimated fair value is determined using market quotations based on recent trade activity for fixed rate obligations (“Level 2” inputs). Our Second Lien Term Loan and Second Lien Notes due 2019 feature variable interest rates and we estimate their fair value by using market quotations based on recent trade activity (“Level 3” input). We consider our Combined Credit Agreements which have a variable interest rate to have a fair value equal to their carrying value (“Level 1” input).

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	INCOME TAXES
	Note 13 to the consolidated financial statements in our 2013 Annual Report on Form 10-K contains additional information about our income taxes. At March 31, 2014, our U.S. and Canadian valuation allowances are $370.4 million and $62.8 million, respectively, which reduce our net deferred tax assets to a zero value as we continue to believe that it is not more likely than not that we will realize the deferred tax assets primarily related to our cumulative net operating losses. Income tax recognized for the three months ended March 31, 2014 is a result of hedge gains previously deferred in AOCI being realized during the periods and the net tax impact being recognized.

Commitments_And_Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2014
Loss Contingency [Abstract]	'
Commitments And Contingencies	'
	COMMITMENTS AND CONTINGENCIES
	In July 2011, we received a subpoena duces tecum from the SEC requesting certain documents. The SEC has informed us that their investigation arises out of press releases in 2011 questioning the projected decline curves and economics of shale gas wells. In June 2012, we received an additional request from the SEC for certain information regarding our assessment for impairment of unevaluated properties and plans for development of unevaluated properties. We provided responsive information and in February 2013 we met with the SEC.
	Note 14 to the consolidated financial statements in our 2013 Annual Report on Form 10-K contains a more complete description of our contractual obligations, commitments and contingencies for which there are no other significant updates during the quarter ended March 31, 2014.

Fortune_Creek

Fortune Creek	3 Months Ended
	Mar. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Fortune Creek	'
	FORTUNE CREEK
	Note 15 to the consolidated financial statements in our 2013 Annual Report on Form 10-K contains additional information on Fortune Creek. In March 2014, we agreed with KKR to an amendment to extend the ending date of the minimum gross capital expenditures requirement to the earlier of June 30, 2016 or 12 months following consummation of a transaction involving a material portion of our Horn River Asset and to broaden allowable spending to include acquisitions of producing properties that utilize partnership assets. As part of the amendment, we contributed C$28 million to Fortune Creek which was subsequently distributed to KKR and was applied against the gathering agreement requirement. The effect of this contribution was to reduce the balance of the partnership liability and to reduce the gathering rate that burdens our Horn River Asset production by C$0.13 per Mcf until at least 2016.
	We committed gas production from our Horn River Asset for ten years beginning 2012, as more fully described below. KKR contributed C$125 million cash in exchange for a 50% interest in Fortune Creek. Our Canadian subsidiary has responsibility for the day-to-day operations of Fortune Creek.
	The firm gathering agreement with Fortune Creek is guaranteed by us. If our subsidiary does not meet its obligations under the gathering agreement, KKR has the right to liquidate the partnership and consequently we have recorded the funds contributed by KKR as a liability in our consolidated financial statements. We recognize accretion expense to reflect the rate of return earned by KKR via its investment. Fortune Creek has made cash distributions to KKR, which are reported as cash used in financing activities.

Quicksilver_Stockholders_Equit

Quicksilver Stockholders' Equity	3 Months Ended
	Mar. 31, 2014
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]	'
Quicksilver Stockholders' Equity	'
	QUICKSILVER STOCKHOLDERS’ EQUITY
	Common Stock, Preferred Stock and Treasury Stock
	We are authorized to issue 400 million shares of common stock with a $0.01 par value per share and 10 million shares of preferred stock with a $0.01 par value per share. At March 31, 2014 and December 31, 2013, we had 177.4 million and 177.3 million shares of common stock outstanding, respectively.
	Stock Options
	No options have been granted during 2014. The following summarizes the values from and assumptions for the Black-Scholes option pricing model for stock options issued during the three months ended March 31, 2013:
	Weighted avg grant date fair value	$1.81
	Weighted avg risk-free interest rate	0.76%
	Expected life	5.3 years
	Wtd avg volatility	75.00%
	Expected dividends	—
	The following table summarizes our stock option activity for the three months ended March 31, 2014:
		Shares		Wtd Avg		Wtd Avg		Aggregate
				Exercise		Remaining		Intrinsic Value
				Price		Contractual Life
						(In years)		(In thousands)
	Outstanding at January 1, 2014	6,771,578		$	7.82
	Expired	(20,719	)	9.85
	Outstanding at March 31, 2014	6,750,859		$	7.81	5.9		$	1,409
	Exercisable at March 31, 2014	5,323,678		$	9.19	5.1		$	282
	As of March 31, 2014, we estimate that a total of 6.3 million stock options will vest including those options already exercisable. As of March 31, 2014, the unrecognized compensation cost related to outstanding unvested stock options was $1.6 million, which is expected to be recognized in expense through August 2016. Compensation expense related to stock options of $0.5 million and $1.0 million was recognized for the three months ended March 31, 2014 and 2013, respectively.
	Restricted Stock and Stock Units
	The following table summarizes our restricted stock and stock unit activity for the three months ended March 31, 2014:
		Payable in shares				Payable in cash
		Shares		Wtd Avg		Shares			Wtd Avg
				Grant Date					Grant Date
				Fair Value					Fair Value
	Outstanding at January 1, 2014	5,668,090		$	3.9	1,572,341			$	3.69
	Granted	662,170		3.01		—			—
	Vested	(2,401,580	)	4.93		(498,535	)		4.66
	Forfeited	(80,209	)	3.77		(16,893	)		3.49
	Outstanding at March 31, 2014	3,848,471		$	3.11	1,056,913			$	3.26
	As of March 31, 2014, the unrecognized compensation cost related to outstanding unvested restricted stock was $11.0 million, which is expected to be recognized in expense through March 2017. Grants of restricted stock and RSUs during the three months ended March 31, 2014 had an estimated grant date fair value of $2.0 million. The fair value of outstanding RSUs to be settled in cash was $2.8 million at March 31, 2014. For the three months ended March 31, 2014 and 2013, compensation expense related to restricted stock and RSUs of $3.7 million and $4.5 million, respectively, was recognized. The total fair value of shares vested during the three months ended March 31, 2014 was $9.4 million.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	EARNINGS PER SHARE
	The following is a reconciliation of the numerator and denominator used for the computation of basic and diluted net income (loss) per common share.
		For the Three Months Ended
		March 31,
		2014			2013
		(In thousands, except per share data)
	Net loss attributable to Quicksilver	$	(58,833	)	$	(59,707	)
	Basic income allocable to participating securities (1)	$	—		$	—
	Loss available to shareholders	$	(58,833	)	$	(59,707	)
	Weighted average common shares – basic	173,497			171,826
	Effect of dilutive securities (2)
	Share-based compensation awards	—			—
	Weighted average common shares – diluted	173,497			171,826
	Earnings (loss) per common share – basic	$	(0.34	)	$	(0.35	)
	Earnings (loss) per common share – diluted	$	(0.34	)	$	(0.35	)
	(1)	Restricted share awards that contain nonforfeitable rights to dividends are participating securities and, therefore, should be included in computing earnings using the two-class method. Participating securities, however, do not participate in undistributed net losses because there is no contractual obligation to do so.
	(2)	For the three months ended March 31, 2014, 6.8 million shares associated with our stock options and 0.3 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the three months ended March 31, 2013, 5.0 million shares associated with our stock options and 0.9 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations.

Condensed_Consolidating_Financ

Condensed Consolidating Financial Information	3 Months Ended
	Mar. 31, 2014
Condensed Consolidating Financial Information [Abstract]	'
Condensed Consolidating Financial Information	'
	CONDENSED CONSOLIDATING FINANCIAL INFORMATION
	Note 18 to the consolidated financial statements in our 2013 Annual Report on Form 10-K contains a more complete description of our guarantor, non-guarantor, restricted and unrestricted subsidiaries under the indentures for our senior notes and senior subordinated notes.
	The following tables present financial information about Quicksilver and our restricted subsidiaries for the three-month period covered by the condensed consolidated financial statements. Under the indentures for our senior notes and senior subordinated notes, Fortune Creek is not considered to be a subsidiary and therefore it is presented separately from the other subsidiaries for these purposes.
	Condensed Consolidating Balance Sheets
		31-Mar-14
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
		Inc.			Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(In thousands)
	ASSETS
	Current assets	$	256,321		$	11,510		$	53,154		$	(27,979	)	$	293,006		$	46		$	1,218		$	(24	)	$	294,246
	Property and equipment	480,136			15,160			302,224			—			797,520			—			77,598			—			875,118
	Investment in subsidiaries (equity method)	(231,131		)	—			(1,345		)	231,131			(1,345		)	(1,345		)	—			2,690			—
	Other assets	479,128			—			24,617			(413,282		)	90,463			—			—			—			90,463
	Total assets	$	984,454		$	26,670		$	378,650		$	(210,130	)	$	1,179,644		$	(1,299	)	$	78,816		$	2,666		$	1,259,827
	LIABILITIES AND EQUITY
	Current liabilities	$	116,207		$	12,577		$	25,244		$	(27,979	)	$	126,049		$	25		$	1,778		$	(24	)	$	127,828
	Long-term liabilities	1,943,612			19,242			559,958			(413,282		)	2,109,530			—			1,506			96,328			2,207,364
	Stockholders' equity	(1,075,365		)	(5,149		)	(206,552		)	231,131			(1,055,935		)	(1,324		)	75,532			(93,638		)	(1,075,365		)
	Total liabilities and equity	$	984,454		$	26,670		$	378,650		$	(210,130	)	$	1,179,644		$	(1,299	)	$	78,816		$	2,666		$	1,259,827
		December 31, 2013
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources
		Inc.			Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Inc.
								Subsidiaries						Subsidiaries			Subsidiaries									Consolidated
		(In thousands)
	ASSETS
	Current assets	$	349,586		$	10,735		$	53,034		$	(19,642	)	$	393,713		$	909		$	1,110		$	(1,772	)	$	393,960
	Property and equipment	455,822			15,486			307,865			—			779,173			—			81,632			—			860,805
	Investment in subsidiaries (equity method)	(217,852		)	—			(33,840		)	217,852			(33,840		)	(33,840		)	—			67,680			—
	Other assets	472,792			—			32,892			(390,723		)	114,961			—			—			—			114,961
	Total assets	$	1,060,348		$	26,221		$	359,951		$	(192,513	)	$	1,254,007		$	(32,931	)	$	82,742		$	65,908		$	1,369,726
	LIABILITIES AND EQUITY
	Current liabilities	$	124,275		$	12,210		$	17,167		$	(19,642	)	$	134,010		$	888		$	1,671		$	(1,772	)	$	134,797
	Long-term liabilities	1,942,043			19,242			542,659			(390,723		)	2,113,221			—			1,546			126,132			2,240,899
	Stockholders' equity	(1,005,970		)	(5,231		)	(199,875		)	217,852			(993,224		)	(33,819		)	79,525			(58,452		)	(1,005,970		)
	Total liabilities and equity	$	1,060,348		$	26,221		$	359,951		$	(192,513	)	$	1,254,007		$	(32,931	)	$	82,742		$	65,908		$	1,369,726
	Condensed Consolidating Statements of Income
		For the Three Months Ended March 31, 2014
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
					Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(In thousands)
	Revenue	$	62,910		$	374		$	28,502		$	—		$	91,786		$	—		$	4,942		$	(4,942	)	$	91,786
	Operating expenses	75,401			291			30,265			—			105,957			—			1,825			(4,942		)	102,840
	Equity in net earnings of subsidiaries	(5,689		)	—			(1,282		)	5,689			(1,282		)	3,119			—			(1,837		)	—
	Operating income (loss)	(18,180		)	83			(3,045		)	5,689			(15,453		)	3,119			3,117			(1,837		)	(11,054		)
	Fortune Creek accretion	—			—			—			—			—			—			—			(4,401		)	(4,401		)
	Interest expense and other	(38,011		)	—			(2,718		)	—			(40,729		)	—			2			—			(40,727		)
	Income tax (expense) benefit	(2,642		)	(29		)	20			—			(2,651		)	—			—			—			(2,651		)
	Net income (loss)	$	(58,833	)	$	54		$	(5,743	)	$	5,689		$	(58,833	)	$	3,119		$	3,119		$	(6,238	)	$	(58,833	)
	Other comprehensive income (loss)	(8,798		)	—			(3,307		)	—			(12,105		)	—			—			—			(12,105		)
	Equity in OCI of subsidiaries	(3,307		)	—			—			3,307			—			—			—			—			—
	Comprehensive income (loss)	$	(70,938	)	$	54		$	(9,050	)	$	8,996		$	(70,938	)	$	3,119		$	3,119		$	(6,238	)	$	(70,938	)
		For the Three Months Ended March 31, 2013
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
					Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(In thousands)
	Revenue	$	88,900		$	214		$	29,589		$	—		$	118,703		$	—		$	5,325		$	(5,325	)	$	118,703
Operating expenses	97,024			30			28,459			—			125,513			—			2,389			(5,325		)	122,577
Equity in net earnings of subsidiaries	(4,191		)	—			(1,908		)	4,191			(1,908		)	2,937			—			(1,029		)	—
Operating income (loss)	(12,315		)	184			(778		)	4,191			(8,718		)	2,937			2,936			(1,029		)	(3,874		)
Fortune Creek accretion	—			—			—			—			—			—			—			(4,845		)	(4,845		)
Interest expense and other	(41,168		)	—			(2,925		)	—			(44,093		)	—			1			—			(44,092		)
Income tax (expense) benefit	(6,224		)	—			(672		)	—			(6,896		)	—			—			—			(6,896		)
Net income (loss)	$	(59,707	)	$	184		$	(4,375	)	$	4,191		$	(59,707	)	$	2,937		$	2,937		$	(5,874	)	$	(59,707	)
Other comprehensive income (loss)	(11,003		)	—			(3,451		)	—			(14,454		)	—			—			—			(14,454		)
Equity in OCI of subsidiaries	(3,451		)	—			—			3,451			—			—			—			—			—
Comprehensive income (loss)	$	(74,161	)	$	184		$	(7,826	)	$	7,642		$	(74,161	)	$	2,937		$	2,937		$	(5,874	)	$	(74,161	)
Condensed Consolidating Statements of Cash Flows
	For the Three Months Ended March 31, 2014
	Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
	Resources Inc.			Guarantor			Non-Guarantor			Subsidiary			and			Non-Guarantor			Creek			Eliminations			Resources Inc.
				Subsidiaries			Subsidiaries			Eliminations			Restricted			Subsidiaries									Consolidated
													Subsidiaries
	(In thousands)
Net cash flow provided by (used in) operating activities	$	(29,198	)	$	14		$	9,075		$	—		$	(20,109	)	$	—		$	125		$	—		$	(19,984	)
Purchases of property, plant and equipment	(28,772		)	(14		)	(9,934		)	—			(38,720		)	—			(9		)	—			(38,729		)
Investment in subsidiary	(7,385		)	—			(26,395		)	7,385			(26,395		)	(26,395		)	—			52,790			—
Proceeds from sale of properties and equipment	910			—			116			—			1,026			—			—			—			1,026
Purchases of marketable securities	(55,682		)	—			—			—			(55,682		)	—			—			—			(55,682		)
Maturities and sales of marketable securities	124,694			—			—			—			124,694			—			—			—			124,694
Net cash flow provided by (used in) investing activities	33,765			(14		)	(36,213		)	7,385			4,923			(26,395		)	(9		)	52,790			31,309
Debt issuance costs paid	(162		)	—			—			—			(162		)	—			—			—			(162		)
Intercompany note	(22,559		)	—			22,559			—			—			—			—			—			—
Intercompany financing	—			—			7,385			(7,385		)	—			—			—			—			—
Contribution received	—			—			—			—			—			26,395			26,395			(52,790		)	—
Distribution of Fortune Creek Partnership funds	—			—			—			—			—			—			(29,472		)	—			(29,472		)
Purchase of treasury stock	(2,271		)	—			—			—			(2,271		)	—			—			—			(2,271		)
Net cash flow provided by (used in) financing activities	(24,992		)	—			29,944			(7,385		)	(2,433		)	26,395			(3,077		)	(52,790		)	(31,905		)
Effect of exchange rates on cash	—			—			(2,357		)	—			(2,357		)	(1		)	3,089			—			731
Net increase (decrease) in cash and equivalents	(20,425		)	—			449			—			(19,976		)	(1		)	128			—			(19,849		)
Cash and equivalents at beginning of period	83,893			—			4,135			—			88,028			22			1,053			—			89,103
Cash and equivalents at end of period	$	63,468		$	—		$	4,584		$	—		$	68,052		$	21		$	1,181		$	—		$	69,254
	For the Three Months Ended March 31, 2013
	Quicksilver			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Quicksilver
	Resources Inc.			Guarantor			Non-Guarantor			and Restricted			Non-Guarantor			Creek			Resources Inc.
				Subsidiaries			Subsidiaries			Subsidiaries			Subsidiaries						Consolidated
	(In thousands)
Net cash flow provided by (used in) operating activities	$	(27,331	)	$	4		$	10,648		$	(16,679	)	$	—		$	2,285		$	(14,394	)
Purchases of property, plant and equipment	(18,824		)	(4		)	(8,110		)	(26,938		)	—			(504		)	(27,442		)
Proceeds from sale of properties and equipment	591			—			17			608			—			—			608
Net cash flow used in investing activities	(18,233		)	(4		)	(8,093		)	(26,330		)	—			(504		)	(26,834		)
Issuance of debt	51,000			—			3,040			54,040			—			—			54,040
Repayments of debt	—			—			(4,011		)	(4,011		)	—			—			(4,011		)
Distribution of Fortune Creek Partnership funds	—			—			—			—			—			(3,198		)	(3,198		)
Purchase of treasury stock	(1,007		)	—			—			(1,007		)	—			—			(1,007		)
Net cash flow provided by (used in) financing activities	49,993			—			(971		)	49,022			—			(3,198		)	45,824
Effect of exchange rates on cash	—			—			(1,584		)	(1,584		)	—			1,887			303
Net increase (decrease) in cash and equivalents	4,429			—			—			4,429			—			470			4,899
Cash and equivalents at beginning of period	4,618			—			—			4,618			—			333			4,951
Cash and equivalents at end of period	$	9,047		$	—		$	—		$	9,047		$	—		$	803		$	9,850

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	SEGMENT INFORMATION
	We operate in two geographic segments, the U.S. and Canada, where we are engaged in the exploration and production segment of the oil and gas industry. Additionally, we operate a significantly smaller midstream segment in the U.S. and Canada, where we provide natural gas gathering and processing services, primarily to our U.S. and Canadian exploration and production segments. In Canada, our midstream operation is the Fortune Creek partnership. Revenue earned by Fortune Creek for the gathering and processing of our gas is eliminated on a consolidated basis as is the GPT recognized by our producing properties. Based on the immateriality of our midstream segment, we have combined our U.S. and Canadian midstream information. We evaluate performance based on operating income and property and equipment costs incurred.
		Exploration &													Quicksilver Consolidated
		Production
		U.S.		Canada			Midstream		Corporate			Elimination
	For the Three Months Ended March 31:	(In thousands)
	2014
	Revenue	$	62,903	$	27,962		$	5,863	$	—		$	(4,942	)	$	91,786
	DD&A	7,379		4,827			1,243		506			—			13,955
	Operating income (loss)	2,181		(611		)	3,201		(15,825		)	—			(11,054		)
	Property and equipment costs incurred	33,216		8,954			11		91			—			42,272
	2013
	Revenue	$	81,553	$	36,260		$	6,215	$	—		$	(5,325	)	$	118,703
	DD&A	13,128		3,190			1,340		598			—			18,256
	Operating income (loss)	6,922		2,841			3,124		(16,761		)	—			(3,874		)
	Property and equipment costs incurred	20,553		3,064			80		640			—			24,337
	Property, plant and equipment-net
	31-Mar-14	$	476,579	$	300,837		$	92,758	$	4,944		$	—		$	875,118
	31-Dec-13	451,840		306,423			97,118		5,424			—			860,805
	Total assets
	31-Mar-14	770,747		378,650			105,486		4,944			—			$	1,259,827
	31-Dec-13	895,388		359,951			108,963		5,424			—			1,369,726

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Information [Abstract]	'
Supplemental Cash Flow Information	'
	SUPPLEMENTAL CASH FLOW INFORMATION
	Cash paid (received) for interest and income taxes is as follows:
		For the Three Months Ended
		March 31,
		2014			2013
		(In thousands)
	Interest, net of capitalized interest	$	49,103		$	69,633
	Income taxes	(7,951		)	35
	Other significant non-cash transactions are as follows:
		For the Three Months Ended
		March 31,
		2014			2013
		(In thousands)
	Working capital related to capital expenditures	$	13,128		$	8,964

Transactions_With_Related_Part

Transactions With Related Parties	3 Months Ended
	Mar. 31, 2014
Related Party Transactions [Abstract]	'
Transactions With Related Parties	'
	TRANSACTIONS AND OTHER MATTERS WITH RELATED PARTIES
	As of March 31, 2014, members of the Darden family and entities controlled by them beneficially owned approximately 30% of our outstanding common stock. Glenn Darden and Anne Darden Self are officers and directors, and Thomas Darden is a director, of Quicksilver.
	During the first three months of 2013, we paid $0.3 million for use of an airplane owned by an entity controlled by members of the Darden family. Usage rates were determined based upon comparable rates charged by third parties.
	Payments received from Mercury, a company owned by members of the Darden family, for sublease rentals, employee insurance coverage and administrative services were less than $0.1 million for the first three months of 2014 and 2013.
	Thomas Darden retired as an employee on December 31, 2013. During the first three months of 2014, consulting fee payments of $135,000, office allowance payments of $37,500 and COBRA payments of $39,000 were made to Mr. Darden. Additionally, in accordance with the agreement related to such retirement signed in May 2013 and following the execution and non-revocation of a release agreement satisfactory to us, we paid Mr. Darden a cash bonus of $286,650 and an equity bonus in the form of 72,662 fully vested shares having a grant date fair value equal to $191,100 in March 2014.

Derivatives_And_Fair_Value_Mea1

Derivatives And Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Credit Risk Derivatives, at Fair Value, Net [Abstract]	'
Estimated Fair Value Of Derivative Instruments Under Input Levels	'
		Asset Derivatives							Liability Derivatives
		31-Mar-14				31-Dec-13			31-Mar-14			31-Dec-13
		(in thousands)							(in thousands)
	Level 2 derivative instruments	$	85,630			$	107,395		$	8,293		$	3,448
	Level 3 derivative instruments	8,629				23,485			1,428			—
	Total	$	94,259			$	130,880		$	9,721		$	3,448
Changes In Level 3 Fair Values	'
		For the Three Months Ended
		March 31,
		2014				2013
		(In thousands)
	Balance at beginning of period	$	23,485			$	(4,931	)
	Total gains (losses) for the period:
	Unrealized loss on derivatives	(17,883		)		(18		)
	Settlements in net derivative gains (losses)	1,599				(4,088		)
	Balance at end of period	$	7,201			$	(9,037	)
	Total losses included in net derivative losses attributable to the change in unrealized losses related to assets still held at the reporting date	$	(15,576	)		$	(92	)
Held-to-maturity Securities [Table Text Block]	'
		Amortized Cost				Gross Unrealized Gains			Gross Unrealized Losses			Fair Market Value
		(In thousands)
	Marketable securities (held-to-maturity)
	Time deposits	$	3,508			$	—		$	(9	)	$	3,499
	Commercial paper	93,933				15			(5		)	93,943
	Marketable securities	$	97,441			$	15		$	(14	)	$	97,442
Price Collars And Swaps For Anticipated Natural Gas And NGL Production	'
	Production		Daily Production
	Year		Volume
			Natural Gas		NGL		Natural Gas Basis Swaps
			MMcfd		MBbld		MMcfd
	Remaining 2014 (1)		170		4		40
	2015		150		—		—
	2016-2021		40		—		—
	(1)	Our 2014 NGL derivatives end in September. Our natural gas derivatives and AECO to NYMEX natural gas basis swaps are in place for the whole of 2014.
Estimated Fair Value Of Derivative Instruments	'
		Asset Derivatives								Liability Derivatives
		31-Mar-14				31-Dec-13				31-Mar-14			31-Dec-13
		(In thousands)								(In thousands)
	Derivatives not designated as hedges:
	Commodity contracts reported in:
	Current derivative assets	$	50,012			$	60,063			$	6,633		$	2,540
	Noncurrent derivative assets	90,132				105,315				39,252			31,958
	Current derivative liabilities	—				—				9,540			3,125
	Noncurrent derivative liabilities	254				—				435			323
	Total derivatives not designated as hedges	$	140,398			$	165,378			$	55,860		$	37,946

Property_Plant_And_Equipment_T

Property, Plant And Equipment (Tables)	3 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Property, Plant, and Equipment [Table Text Block]	'
		31-Mar-14			31-Dec-13
		(In thousands)
	Oil and gas properties
	Subject to depletion	$	5,684,433		$	5,687,557
	Unevaluated costs	217,481			221,605
	Accumulated depletion	(5,239,521		)	(5,268,719		)
	Net oil and gas properties	662,393			640,443
	Other plant and equipment
	Pipelines and processing facilities	341,874			347,093
	General properties	71,331			72,125
	Accumulated depreciation	(200,480		)	(198,856		)
	Net other property and equipment	212,725			220,362
	Property, plant and equipment, net of accumulated depletion and depreciation	$	875,118		$	860,805

LongTerm_Debt_Tables

Long-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2014
Long-term Debt, Other Disclosures [Abstract]	'
Schedule Of Long-Term Debt Instruments	'
		31-Mar-14			31-Dec-13
		(in thousands)
	Combined Credit Agreements	$	207,746		$	211,200
	Second Lien Term Loan, net of unamortized discount	608,221			607,572
	Second Lien Notes due 2019, net of unamortized discount	194,631			194,423
	Senior notes due 2015, net of unamortized discount	10,478			10,472
	Senior notes due 2016, net of unamortized discount	8,056			8,044
	Senior notes due 2019, net of unamortized discount	293,405			293,243
	Senior notes due 2021, net of unamortized discount	309,530			309,190
	Senior subordinated notes due 2016	350,000			350,000
	Total debt	1,982,067			1,984,144
	Unamortized deferred gain-terminated interest rate swaps	4,311			4,802
	Long-term debt	$	1,986,378		$	1,988,946
Schedule of Outstanding Debt	'
			Priority on Collateral and Structural Seniority (1)
			Highest								Lowest
			priority								priority
			First Lien	Second Lien			Senior Unsecured				Senior Subordinated
			Combined Credit	Second Lien Term Loan		Second Lien Notes due 2019	2015	2016	2019	2021	Senior
			Agreements				Senior Notes	Senior Notes	Senior Notes	Senior Notes	Subordinated Notes
	Principal amount (1) (2)		$350 million	$625 million		$200 million	$11 million	$8 million	$298 million	$325 million	$350 million
	Scheduled maturity date (3)		September 6, 2016	June 21, 2019		June 21, 2019	August 1, 2015	January 1, 2016	August 15, 2019	July 1, 2021	April 1, 2016
	Interest rate on outstanding borrowings at March 31, 2014 (4)		3.99%	7.00%		7.00%	8.25%	11.75%	9.13%	11.00%	7.12%
	Base interest rate options (5) (6)		LIBOR, ABR, CDOR	LIBOR floor of 1.25%; ABR floor of 2.25%		LIBOR floor of 1.25%	N/A	N/A	N/A	N/A	N/A
	Financial covenants (7) (9)		- Minimum current ratio of 1.0	N/A		N/A	N/A	N/A	N/A	N/A	N/A
			- Minimum EBITDA to cash interest expense ratio of 1.10
			- Maximum senior secured debt leverage ratio of 2.0
	Significant restrictive covenants (8)(9)		- Incurrence of debt	- Incurrence of debt		- Incurrence of debt	- Asset sales	- Asset sales	- Incurrence of debt	- Incurrence of debt	- Incurrence of debt
			- Incurrence of liens	- Incurrence of liens and 1st lien cap		- Incurrence of liens and 1st lien cap			- Incurrence of liens	- Incurrence of liens	- Incurrence of liens
			- Payment of dividends	-Payment of dividends		-Payment of dividends			-Payment of dividends	-Payment of dividends	-Payment of dividends
			- Equity purchases	- Equity purchases		- Equity purchases			- Equity purchases	- Equity purchases	- Equity purchases
			- Asset sales	- Asset sales		- Asset sales			- Asset sales	- Asset sales	- Asset sales
			- Affiliate transactions	- Affiliate transactions		- Affiliate transactions			- Affiliate transactions	- Affiliate transactions	- Affiliate transactions
			- Limitations on derivatives and investments
	Optional redemption (9)		Any time	Any time, subject to re-pricing event		Any time, subject to re-pricing event	August 1,	July 1,	August 15,	July 1,	April 1,
				June 21,		June 21,	2013: 101.938	2013: 105.875	2014: 104.563	2019: 102.000	2013: 101.188
				2014: 102		2014: 102	2014: par	2014: 102.938	2015: 103.042	2020: par	2014: par
				2015: 101		2015: 101		2015: par	2016: 101.521
									2017: par
	Make-whole redemption (9)		N/A	N/A		N/A	N/A	N/A	Callable prior	Callable prior	N/A
									to August 15, 2014	to July 1, 2019
									at make-whole	at make-whole
									call price of	call price of
									Treasury +50 bps	Treasury +50 bps
	Change of control (9)		Event of default	Put at 101%		Put at 101%	Put at 101%	Put at 101%	Put at 101%	Put at 101%	Put at 101%
				of principal		of principal	of principal	of principal	of principal	of principal	of principal
				plus accrued		plus accrued	plus accrued	plus accrued	plus accrued	plus accrued	plus accrued
				interest		interest	interest	interest	interest	interest	interest
	Equity clawback (9)		N/A	N/A		N/A	N/A	N/A	N/A	Redeemable until	N/A
										1-Jul-16
										at 111.00%,
										plus accrued
										interest for
										up to 35%
	Estimated fair value (10)		$207.7 million	$610.2 million		$195.3 million	$10.7 million	$8.6 million	$294.3 million	$346.5 million	$337.5 million
	(1)	Borrowings under the Amended and Restated U.S. Credit Facility, Second Lien Term Loan and Second Lien Notes due 2019 are guaranteed by certain of Quicksilver’s domestic subsidiaries and are secured (on a first priority basis with respect to the Amended and Restated U.S. Credit Facility and on a second priority basis with respect to the Second Lien Term Loan and the Second Lien Notes due 2019) by 100% of the equity interests of each of Cowtown Pipeline Management, Inc., Cowtown Pipeline Funding, Inc., Cowtown Gas Processing L.P., Cowtown Pipeline L.P., Barnett Shale Operating LLC, Silver Stream Pipeline Company LLC, QPP Parent LLC and QPP Holdings LLC (collectively, the “Domestic Pledged Equity”), 65% of the equity interests of Quicksilver Resources Canada Inc. (“Quicksilver Canada”) and Quicksilver Production Partners Operating Ltd. (with respect to the Amended and Restated U.S. Credit Facility, on a ratable basis with borrowings under the Amended and Restated Canadian Credit Facility) and the majority of Quicksilver's domestic proved oil and gas properties and related assets, (the “Domestic Pledged Property”). Borrowings under the Amended and Restated Canadian Credit Facility are guaranteed by Quicksilver and certain of its domestic subsidiaries and are secured by the Domestic Pledged Equity, the Domestic Pledged Property, 100% of the equity interests of Quicksilver Canada (65% of which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and any Canadian restricted subsidiaries, under the Amended and Restated Canadian Credit Facility, and 65% of the equity interests of Quicksilver Production Partners Operating Ltd. (which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and the majority of Quicksilver Canada's oil and gas properties and related assets. The other debt presented is based upon structural seniority and priority of payment.
	(2)	The principal amount for the Combined Credit Agreements represents the global borrowing base as of March 31, 2014.
	(3)	The Combined Credit Agreements are required to be repaid 91 days prior to the maturity of the 2015 Senior Notes, the 2016 Senior Notes, the 2016 Senior Subordinated Notes, the Second Lien Term Loan or the Second Lien Notes due 2019, if on the applicable date any amount of such debt remains outstanding. The Second Lien Term Loan and Second Lien Notes due 2019 are required to be repaid (1) 91 days prior to the maturity of the 2019 Senior Notes if more than $100 million of the 2019 Senior Notes remain outstanding and (2) 91 days prior to the maturity of the 2015 Senior Notes, the 2016 Senior Notes or the 2016 Senior Subordinated Notes if on the applicable date the aggregate amount of all such notes remaining outstanding is greater than $100 million.
	(4)	Represents the weighted average borrowing rate payable to lenders.
	(5)	Amounts outstanding under the Amended and Restated U.S. Credit Facility bear interest, at our election, at (i) adjusted LIBOR (as defined in the Amended and Restated U.S. Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii) ABR (as defined in the Amended and Restated U.S. Credit Facility), which is the greatest of (a) the prime rate announced by JPMorgan, (b) the federal funds rate plus 0.50% and (c) adjusted LIBOR for an interest period of one month plus 1.00%, plus, in each case under scenario (ii), an applicable margin between 1.75% and 2.75%. We also pay a per annum fee on the LC Exposure (as defined in the Amended and Restated U.S. Credit Facility) of all letters of credit issued under the Amended and Restated U.S. Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated U.S. Credit Facility of 0.50%.
	(6)	Amounts outstanding under the Amended and Restated Canadian Credit Facility bear interest, at our election, at (i) the CDOR Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii) the Canadian Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75%, (iii) the U.S. Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75% and (iv) adjusted LIBOR (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%. We pay a per annum fee on the LC Exposure (as defined in the Amended and Restated Canadian Credit Facility) of all letters of credit issued under the Amended and Restated Canadian Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated Canadian Credit Facility of 0.50%.
	(7)	The future minimum required interest coverage ratio for the Combined Credit Agreement is as follows:
	Period		Interest Coverage Ratio	Period		Interest Coverage Ratio
	Q2 2014		1.1	Q3 2015		1.15
	Q3 2014		1.1	Q4 2015		1.2
	Q4 2014		1.1	Q1 2016		1.5
	Q1 2015		1.1	Q2 2016		2
	Q2 2015		1.15
	(8)	Our indentures require us to reinvest or repay senior debt with net cash proceeds from asset sales within one year.
	(9)	The information presented in this table is qualified in all respects by reference to the full text of the covenants, provisions and related definitions contained in the documents governing the various components of our debt.
	(10)	The estimated fair value is determined using market quotations based on recent trade activity for fixed rate obligations (“Level 2” inputs). Our Second Lien Term Loan and Second Lien Notes due 2019 feature variable interest rates and we estimate their fair value by using market quotations based on recent trade activity (“Level 3” input). We consider our Combined Credit Agreements which have a variable interest rate to have a fair value equal to their carrying value (“Level 1” input).

Quicksilver_Stockholders_Equit1

Quicksilver Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2014
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]	'
Assumptions For The Black-Scholes Option Pricing Model For Stock Options Issued	'
	Weighted avg grant date fair value	$1.81
	Weighted avg risk-free interest rate	0.76%
	Expected life	5.3 years
	Wtd avg volatility	75.00%
	Expected dividends	—
Stock Option Activity	'
		Shares		Wtd Avg		Wtd Avg		Aggregate
				Exercise		Remaining		Intrinsic Value
				Price		Contractual Life
						(In years)		(In thousands)
	Outstanding at January 1, 2014	6,771,578		$	7.82
	Expired	(20,719	)	9.85
	Outstanding at March 31, 2014	6,750,859		$	7.81	5.9		$	1,409
	Exercisable at March 31, 2014	5,323,678		$	9.19	5.1		$	282
Restricted Stock And Stock Unit Activity	'
		Payable in shares				Payable in cash
		Shares		Wtd Avg		Shares			Wtd Avg
				Grant Date					Grant Date
				Fair Value					Fair Value
	Outstanding at January 1, 2014	5,668,090		$	3.9	1,572,341			$	3.69
	Granted	662,170		3.01		—			—
	Vested	(2,401,580	)	4.93		(498,535	)		4.66
	Forfeited	(80,209	)	3.77		(16,893	)		3.49
	Outstanding at March 31, 2014	3,848,471		$	3.11	1,056,913			$	3.26

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Reconciliation Of Components Used To Compute Basic And Diluted Earnings (Loss) Per Common Share	'
		For the Three Months Ended
		March 31,
		2014			2013
		(In thousands, except per share data)
	Net loss attributable to Quicksilver	$	(58,833	)	$	(59,707	)
	Basic income allocable to participating securities (1)	$	—		$	—
	Loss available to shareholders	$	(58,833	)	$	(59,707	)
	Weighted average common shares – basic	173,497			171,826
	Effect of dilutive securities (2)
	Share-based compensation awards	—			—
	Weighted average common shares – diluted	173,497			171,826
	Earnings (loss) per common share – basic	$	(0.34	)	$	(0.35	)
	Earnings (loss) per common share – diluted	$	(0.34	)	$	(0.35	)
	(1)	Restricted share awards that contain nonforfeitable rights to dividends are participating securities and, therefore, should be included in computing earnings using the two-class method. Participating securities, however, do not participate in undistributed net losses because there is no contractual obligation to do so.
	(2)	For the three months ended March 31, 2014, 6.8 million shares associated with our stock options and 0.3 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the three months ended March 31, 2013, 5.0 million shares associated with our stock options and 0.9 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations.

Condensed_Consolidating_Financ1

Condensed Consolidating Financial Information (Tables)	3 Months Ended
	Mar. 31, 2014
Condensed Consolidating Financial Information [Abstract]	'
Condensed Consolidating Balance Sheets	'
		31-Mar-14
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
		Inc.			Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(In thousands)
	ASSETS
	Current assets	$	256,321		$	11,510		$	53,154		$	(27,979	)	$	293,006		$	46		$	1,218		$	(24	)	$	294,246
	Property and equipment	480,136			15,160			302,224			—			797,520			—			77,598			—			875,118
	Investment in subsidiaries (equity method)	(231,131		)	—			(1,345		)	231,131			(1,345		)	(1,345		)	—			2,690			—
	Other assets	479,128			—			24,617			(413,282		)	90,463			—			—			—			90,463
	Total assets	$	984,454		$	26,670		$	378,650		$	(210,130	)	$	1,179,644		$	(1,299	)	$	78,816		$	2,666		$	1,259,827
	LIABILITIES AND EQUITY
	Current liabilities	$	116,207		$	12,577		$	25,244		$	(27,979	)	$	126,049		$	25		$	1,778		$	(24	)	$	127,828
	Long-term liabilities	1,943,612			19,242			559,958			(413,282		)	2,109,530			—			1,506			96,328			2,207,364
	Stockholders' equity	(1,075,365		)	(5,149		)	(206,552		)	231,131			(1,055,935		)	(1,324		)	75,532			(93,638		)	(1,075,365		)
	Total liabilities and equity	$	984,454		$	26,670		$	378,650		$	(210,130	)	$	1,179,644		$	(1,299	)	$	78,816		$	2,666		$	1,259,827
		December 31, 2013
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources
		Inc.			Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Inc.
								Subsidiaries						Subsidiaries			Subsidiaries									Consolidated
		(In thousands)
	ASSETS
	Current assets	$	349,586		$	10,735		$	53,034		$	(19,642	)	$	393,713		$	909		$	1,110		$	(1,772	)	$	393,960
	Property and equipment	455,822			15,486			307,865			—			779,173			—			81,632			—			860,805
	Investment in subsidiaries (equity method)	(217,852		)	—			(33,840		)	217,852			(33,840		)	(33,840		)	—			67,680			—
	Other assets	472,792			—			32,892			(390,723		)	114,961			—			—			—			114,961
	Total assets	$	1,060,348		$	26,221		$	359,951		$	(192,513	)	$	1,254,007		$	(32,931	)	$	82,742		$	65,908		$	1,369,726
	LIABILITIES AND EQUITY
	Current liabilities	$	124,275		$	12,210		$	17,167		$	(19,642	)	$	134,010		$	888		$	1,671		$	(1,772	)	$	134,797
	Long-term liabilities	1,942,043			19,242			542,659			(390,723		)	2,113,221			—			1,546			126,132			2,240,899
	Stockholders' equity	(1,005,970		)	(5,231		)	(199,875		)	217,852			(993,224		)	(33,819		)	79,525			(58,452		)	(1,005,970		)
	Total liabilities and equity	$	1,060,348		$	26,221		$	359,951		$	(192,513	)	$	1,254,007		$	(32,931	)	$	82,742		$	65,908		$	1,369,726
Condensed Consolidating Statements Of Income	'
		For the Three Months Ended March 31, 2014
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
					Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(In thousands)
	Revenue	$	62,910		$	374		$	28,502		$	—		$	91,786		$	—		$	4,942		$	(4,942	)	$	91,786
	Operating expenses	75,401			291			30,265			—			105,957			—			1,825			(4,942		)	102,840
	Equity in net earnings of subsidiaries	(5,689		)	—			(1,282		)	5,689			(1,282		)	3,119			—			(1,837		)	—
	Operating income (loss)	(18,180		)	83			(3,045		)	5,689			(15,453		)	3,119			3,117			(1,837		)	(11,054		)
	Fortune Creek accretion	—			—			—			—			—			—			—			(4,401		)	(4,401		)
	Interest expense and other	(38,011		)	—			(2,718		)	—			(40,729		)	—			2			—			(40,727		)
	Income tax (expense) benefit	(2,642		)	(29		)	20			—			(2,651		)	—			—			—			(2,651		)
	Net income (loss)	$	(58,833	)	$	54		$	(5,743	)	$	5,689		$	(58,833	)	$	3,119		$	3,119		$	(6,238	)	$	(58,833	)
	Other comprehensive income (loss)	(8,798		)	—			(3,307		)	—			(12,105		)	—			—			—			(12,105		)
	Equity in OCI of subsidiaries	(3,307		)	—			—			3,307			—			—			—			—			—
	Comprehensive income (loss)	$	(70,938	)	$	54		$	(9,050	)	$	8,996		$	(70,938	)	$	3,119		$	3,119		$	(6,238	)	$	(70,938	)
		For the Three Months Ended March 31, 2013
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
					Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(In thousands)
	Revenue	$	88,900		$	214		$	29,589		$	—		$	118,703		$	—		$	5,325		$	(5,325	)	$	118,703
	Operating expenses	97,024			30			28,459			—			125,513			—			2,389			(5,325		)	122,577
	Equity in net earnings of subsidiaries	(4,191		)	—			(1,908		)	4,191			(1,908		)	2,937			—			(1,029		)	—
	Operating income (loss)	(12,315		)	184			(778		)	4,191			(8,718		)	2,937			2,936			(1,029		)	(3,874		)
	Fortune Creek accretion	—			—			—			—			—			—			—			(4,845		)	(4,845		)
	Interest expense and other	(41,168		)	—			(2,925		)	—			(44,093		)	—			1			—			(44,092		)
	Income tax (expense) benefit	(6,224		)	—			(672		)	—			(6,896		)	—			—			—			(6,896		)
	Net income (loss)	$	(59,707	)	$	184		$	(4,375	)	$	4,191		$	(59,707	)	$	2,937		$	2,937		$	(5,874	)	$	(59,707	)
	Other comprehensive income (loss)	(11,003		)	—			(3,451		)	—			(14,454		)	—			—			—			(14,454		)
	Equity in OCI of subsidiaries	(3,451		)	—			—			3,451			—			—			—			—			—
	Comprehensive income (loss)	$	(74,161	)	$	184		$	(7,826	)	$	7,642		$	(74,161	)	$	2,937		$	2,937		$	(5,874	)	$	(74,161	)
Condensed Consolidating Statements Of Cash Flows	'
		For the Three Months Ended March 31, 2014
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-Guarantor			Subsidiary			and			Non-Guarantor			Creek			Eliminations			Resources Inc.
					Subsidiaries			Subsidiaries			Eliminations			Restricted			Subsidiaries									Consolidated
														Subsidiaries
		(In thousands)
	Net cash flow provided by (used in) operating activities	$	(29,198	)	$	14		$	9,075		$	—		$	(20,109	)	$	—		$	125		$	—		$	(19,984	)
	Purchases of property, plant and equipment	(28,772		)	(14		)	(9,934		)	—			(38,720		)	—			(9		)	—			(38,729		)
	Investment in subsidiary	(7,385		)	—			(26,395		)	7,385			(26,395		)	(26,395		)	—			52,790			—
	Proceeds from sale of properties and equipment	910			—			116			—			1,026			—			—			—			1,026
	Purchases of marketable securities	(55,682		)	—			—			—			(55,682		)	—			—			—			(55,682		)
	Maturities and sales of marketable securities	124,694			—			—			—			124,694			—			—			—			124,694
	Net cash flow provided by (used in) investing activities	33,765			(14		)	(36,213		)	7,385			4,923			(26,395		)	(9		)	52,790			31,309
	Debt issuance costs paid	(162		)	—			—			—			(162		)	—			—			—			(162		)
	Intercompany note	(22,559		)	—			22,559			—			—			—			—			—			—
	Intercompany financing	—			—			7,385			(7,385		)	—			—			—			—			—
	Contribution received	—			—			—			—			—			26,395			26,395			(52,790		)	—
	Distribution of Fortune Creek Partnership funds	—			—			—			—			—			—			(29,472		)	—			(29,472		)
	Purchase of treasury stock	(2,271		)	—			—			—			(2,271		)	—			—			—			(2,271		)
	Net cash flow provided by (used in) financing activities	(24,992		)	—			29,944			(7,385		)	(2,433		)	26,395			(3,077		)	(52,790		)	(31,905		)
	Effect of exchange rates on cash	—			—			(2,357		)	—			(2,357		)	(1		)	3,089			—			731
	Net increase (decrease) in cash and equivalents	(20,425		)	—			449			—			(19,976		)	(1		)	128			—			(19,849		)
	Cash and equivalents at beginning of period	83,893			—			4,135			—			88,028			22			1,053			—			89,103
	Cash and equivalents at end of period	$	63,468		$	—		$	4,584		$	—		$	68,052		$	21		$	1,181		$	—		$	69,254
		For the Three Months Ended March 31, 2013
		Quicksilver			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Quicksilver
		Resources Inc.			Guarantor			Non-Guarantor			and Restricted			Non-Guarantor			Creek			Resources Inc.
					Subsidiaries			Subsidiaries			Subsidiaries			Subsidiaries						Consolidated
		(In thousands)
	Net cash flow provided by (used in) operating activities	$	(27,331	)	$	4		$	10,648		$	(16,679	)	$	—		$	2,285		$	(14,394	)
	Purchases of property, plant and equipment	(18,824		)	(4		)	(8,110		)	(26,938		)	—			(504		)	(27,442		)
	Proceeds from sale of properties and equipment	591			—			17			608			—			—			608
	Net cash flow used in investing activities	(18,233		)	(4		)	(8,093		)	(26,330		)	—			(504		)	(26,834		)
	Issuance of debt	51,000			—			3,040			54,040			—			—			54,040
	Repayments of debt	—			—			(4,011		)	(4,011		)	—			—			(4,011		)
	Distribution of Fortune Creek Partnership funds	—			—			—			—			—			(3,198		)	(3,198		)
	Purchase of treasury stock	(1,007		)	—			—			(1,007		)	—			—			(1,007		)
	Net cash flow provided by (used in) financing activities	49,993			—			(971		)	49,022			—			(3,198		)	45,824
	Effect of exchange rates on cash	—			—			(1,584		)	(1,584		)	—			1,887			303
	Net increase (decrease) in cash and equivalents	4,429			—			—			4,429			—			470			4,899
	Cash and equivalents at beginning of period	4,618			—			—			4,618			—			333			4,951
	Cash and equivalents at end of period	$	9,047		$	—		$	—		$	9,047		$	—		$	803		$	9,850

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Operating Income And Property And Equipment Costs Incurred	'
		Exploration &													Quicksilver Consolidated
		Production
		U.S.		Canada			Midstream		Corporate			Elimination
	For the Three Months Ended March 31:	(In thousands)
	2014
	Revenue	$	62,903	$	27,962		$	5,863	$	—		$	(4,942	)	$	91,786
	DD&A	7,379		4,827			1,243		506			—			13,955
	Operating income (loss)	2,181		(611		)	3,201		(15,825		)	—			(11,054		)
	Property and equipment costs incurred	33,216		8,954			11		91			—			42,272
	2013
	Revenue	$	81,553	$	36,260		$	6,215	$	—		$	(5,325	)	$	118,703
	DD&A	13,128		3,190			1,340		598			—			18,256
	Operating income (loss)	6,922		2,841			3,124		(16,761		)	—			(3,874		)
	Property and equipment costs incurred	20,553		3,064			80		640			—			24,337
	Property, plant and equipment-net
	31-Mar-14	$	476,579	$	300,837		$	92,758	$	4,944		$	—		$	875,118
	31-Dec-13	451,840		306,423			97,118		5,424			—			860,805
	Total assets
	31-Mar-14	770,747		378,650			105,486		4,944			—			$	1,259,827
	31-Dec-13	895,388		359,951			108,963		5,424			—			1,369,726

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Information [Abstract]	'
Cash Paid Or Received For Interest And Income Taxes	'
		For the Three Months Ended
		March 31,
		2014			2013
		(In thousands)
	Interest, net of capitalized interest	$	49,103		$	69,633
	Income taxes	(7,951		)	35
Other Significant Non-cash Transactions	'
		For the Three Months Ended
		March 31,
		2014			2013
		(In thousands)
	Working capital related to capital expenditures	$	13,128		$	8,964

Divestitures_Divestitures_Deta

Divestitures Divestitures (Details) (USD $)	1-May-14	Apr. 30, 2013	Jun. 30, 2013
In Millions, unless otherwise specified	Sandwash Basin [Member]	Barnett Shale [Member]	Tokyo Gas [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'
Equity Method Investment, Ownership Percentage	'	25.00%	'
PurchasePricePriorToAdjustments	'	$485	'
Significant Acquisitions and Disposals, Acquisition Costs or Sale Proceeds	93.5	464	'
Significant Acquisitions and Disposals, Gain (Loss) on Sale or Disposal, Pretax	'	339.3	'
Oil and Gas Property Decrease due to Gain	'	'	$110.70

Derivatives_And_Fair_Value_Mea2

Derivatives And Fair Value Measurements (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Gains and losses from the effective portion of derivative assets and liabilities held in AOCI expected to be reclassified into earnings	$23.90	'
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	0.5	1.3
Reduction Of Interest Expense Over Life Of Debt Instruments, next 12 months	$2.10	'
Fair Value Inputs, Level 3 [Member]	'	'
Natural gas hedges original tenure	'10 years	'
Fair Value Inputs, Level 3 [Member] | Maximum [Member]	'	'
Unobservable inputs included within the fair value calculation	5.14	'
Fair Value Inputs, Level 3 [Member] | Minimum [Member]	'	'
Unobservable inputs included within the fair value calculation	4.01	'

Derivatives_And_Fair_Value_Mea3

Derivatives And Fair Value Measurements (Estimated Fair Value Of Derivative Instruments Under Input Levels) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Asset Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	$94,259	$130,880
Asset Derivatives [Member] | Fair Value Inputs, Level 2 [Member] | Commodity Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	85,630	107,395
Asset Derivatives [Member] | Fair Value Inputs, Level 3 [Member] | Commodity Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	8,629	23,485
Liability Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	9,721	3,448
Liability Derivatives [Member] | Fair Value Inputs, Level 2 [Member] | Commodity Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	8,293	3,448
Liability Derivatives [Member] | Fair Value Inputs, Level 3 [Member] | Commodity Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	$1,428	$0

Derivatives_And_Fair_Value_Mea4

Derivatives And Fair Value Measurements (Changes In Level 3 Fair Values) (Details) (Fair Value Inputs, Level 3 [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Balance at beginning of period	$23,485	($4,931)
Unrealized gain (loss) on derivatives	-17,883	-18
Balance at end of period	7,201	-9,037
Total gains included in net derivative gains attributable to the change in unrealized gains related to assets still held at the reporting date	-15,576	-92
Derivative gains (losses) [Member]	'	'
Settlements	$1,599	($4,088)

Derivatives_And_Fair_Value_Mea5

Derivatives And Fair Value Measurements (Price Collars And Swaps For Anticipated Natural Gas And NGL Production) (Details)	3 Months Ended
	Mar. 31, 2014
	MMcf
Credit Risk Derivatives, at Fair Value, Net [Abstract]	'
Gas 2014, MMcfd	170
Gas 2015, MMcfd	150
Gas 2016-2021, MMcfd	40
Anticipated NGL Production For 2014	4
Anticipated NGL Production For 2015	0
Anticipated NGL Production for 2016-2021	0
Anticipated Natural Gas Basis Swap Production For 2014	40
Anticipated Natural Gas Basis Swap Production For 2015	0
Anticipated Natural Gas Basis Swap Production for 2016-2021	0

Derivatives_And_Fair_Value_Mea6

Derivatives And Fair Value Measurements (Estimated Fair Value Of Derivative Instruments) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Derivatives, Fair Value [Line Items]	'	'
Current derivative assets	$43,379	$57,523
Noncurrent derivative assets	50,880	73,357
Current derivative liabilities	9,540	3,125
Noncurrent derivative liabilities	181	323
Asset Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Total derivative assets	140,398	165,378
Liability Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Total derivative liabilities	55,860	37,946
Not Designated as Hedging Instrument [Member] | Asset Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Current derivative assets	50,012	60,063
Noncurrent derivative assets	90,132	105,315
Current derivative liabilities	0	0
Noncurrent derivative liabilities	254	0
Not Designated as Hedging Instrument [Member] | Liability Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Current derivative assets	6,633	2,540
Noncurrent derivative assets	39,252	31,958
Current derivative liabilities	9,540	3,125
Noncurrent derivative liabilities	$435	$323

Derivatives_And_Fair_Value_Mea7

Derivatives And Fair Value Measurements (Carrying Value Of Derivatives) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Derivatives, Fair Value [Line Items]	'	'
Settlements in production revenue	($7,850)	($14,755)

Derivatives_And_Fair_Value_Mea8

Derivatives And Fair Value Measurements Derivatives, Investments And Fair Value Measurements (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Fixed Income Securities [Member]	'
Schedule of Held-to-maturity Securities [Line Items]	'
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	$3,508
Held-to-maturity Securities, Unrecognized Holding Gain	0
Held-to-maturity Securities, Unrecognized Holding Loss	-9
Held-to-maturity Securities, Fair Value	3,499
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]	'
Schedule of Held-to-maturity Securities [Line Items]	'
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	93,933
Held-to-maturity Securities, Unrecognized Holding Gain	15
Held-to-maturity Securities, Unrecognized Holding Loss	-5
Held-to-maturity Securities, Fair Value	93,943
Debt Securities [Member]	'
Schedule of Held-to-maturity Securities [Line Items]	'
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	97,441
Held-to-maturity Securities, Unrecognized Holding Gain	15
Held-to-maturity Securities, Unrecognized Holding Loss	-14
Held-to-maturity Securities, Fair Value	$97,442

Property_Plant_And_Equipment_S

Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Abstract]	'	'
Subject to depletion	$5,684,433	$5,687,557
Unevaluated costs	217,481	221,605
Net oil and gas properties	662,393	640,443
Pipelines and processing facilities	341,874	347,093
General properties	71,331	72,125
Accumulated depletion	-5,239,521	-5,268,719
Accumulated depreciation	-200,480	-198,856
Net other property and equipment	212,725	220,362
Property, plant and equipment, net of accumulated depletion and depreciation	$875,118	$860,805

LongTerm_Debt_Narrative_Detail

Long-Term Debt (Narrative) (Details) (USD $)

3 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Apr. 01, 2014

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Senior Notes Due 2015 [Member]

Senior Notes Due 2016 [Member]

Combined Credit Agreements [Member]

Combined Credit Agreements [Member]

Combined Credit Agreements [Member]

Canadian Credit Facility [Member]

Combined Credit Agreements [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Minimum [Member]

Multiple Subsidiaries Set Two [Member]

London Interbank Offered Rate (LIBOR) [Member]

Libor [Member]

Libor [Member]

Senior Notes [Member]

Senior Notes [Member]

2013 [Member]

2013 [Member]

U.S. Credit Facility [Member]

Combined Credit Agreements [Member]

Global Letter Of Credit [Member]

U.S. Credit Facility [Member]

U.S. Credit Facility [Member]

Maximum [Member]

Minimum [Member]

Senior Notes Due 2015 [Member]

Senior Notes Due 2016 [Member]

Senior Notes [Member]

Senior Notes [Member]

Canadian Credit Facility [Member]

Canadian Credit Facility [Member]

Senior Notes Due 2015 [Member]

Senior Notes Due 2016 [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of ownership interest

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

65.00%

'

'

'

'

'

'

'

Borrowing capacity

'

'

'

'

$325,000,000

$350,000,000

'

'

'

'

'

$280,000,000

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Maximum Borrowing Capacity

'

'

'

'

'

650,000,000

1,750,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Document Period End Date

31-Mar-14

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption percentage of par value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

101.94%

105.88%

Available borrowing under combined credit agreements

'

'

'

'

'

'

'

'

99,600,000

'

'

'

'

'

'

'

'

'

'

'

'

Commitment fee percentage

'

'

'

'

'

'

'

'

0.50%

1.75%

0.50%

'

'

'

'

'

'

'

'

'

'

EBITDA to interest expense

'

'

'

'

'

'

'

'

'

'

'

'

2.25

'

'

'

'

'

'

'

'

Repayments of Long-term Debt

0

4,011,000

10,900,000

8,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Issuance of debt

$0

$54,040,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Basis Spread on Variable Rate

'

'

'

'

'

'

'

'

'

2.75%

'

'

'

'

1.00%

3.75%

2.75%

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8.25%

11.75%

'

'

LongTerm_Debt_Schedule_Of_Long

Long-Term Debt (Schedule Of Long-Term Debt Instruments) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]	'	'
Document Period End Date	31-Mar-14	'
Long-term Debt	$1,982,067	$1,984,144
Deferred Gain (Loss) on Discontinuation of Interest Rate Fair Value Hedge	4,311	4,802
Long-term Debt, Excluding Current Maturities	1,986,378	1,988,946
Combined Credit Agreements [Member]	'	'
Debt Instrument [Line Items]	'	'
Line of Credit Facility, Amount Outstanding	207,746	211,200
Senior Secured Second Lien Credit Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Secured Long-term Debt, Noncurrent	608,221	607,572
Senior Secured Second Lien Term Loan Due 2019 [Member]	'	'
Debt Instrument [Line Items]	'	'
Secured Long-term Debt, Noncurrent	194,631	194,423
Senior Notes Due 2015 [Member]	'	'
Debt Instrument [Line Items]	'	'
Senior Notes	10,478	10,472
Senior Notes Due 2016 [Member]	'	'
Debt Instrument [Line Items]	'	'
Senior Notes	8,056	8,044
Senior Notes Due 2019 [Member]	'	'
Debt Instrument [Line Items]	'	'
Senior Notes	293,405	293,243
Senior Notes Due 2021 [Member]	'	'
Debt Instrument [Line Items]	'	'
Senior Notes	309,530	309,190
Senior Subordinated Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Subordinated Long-term Debt, Noncurrent	$350,000	$350,000

LongTerm_Debt_Schedule_Of_Outs

Long-Term Debt (Schedule Of Outstanding Debt) (Details) (USD $)

Apr. 01, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

In Millions, unless otherwise specified

Combined Credit Agreements [Member]

Combined Credit Agreements [Member]

Senior Secured Second Lien Credit Facility [Member]

Senior Notes Due 2015 [Member]

Senior Notes Due 2016 [Member]

Senior Notes Due 2019 [Member]

Canadian Credit Facility [Member]

Multiple Subsidiaries Set One [Member]

Multiple Subsidiaries Set Two [Member]

Maximum [Member]

First Mortgage [Member]

Second Lien Debt [Member]

Second Lien Debt [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Subordinated Notes [Member]

Libor [Member]

Libor [Member]

Libor [Member]

Libor [Member]

ABR [Member]

CDOR Rate [Member]

CDOR Rate [Member]

LIBOR [Member]

Canadian Prime Rate [Member]

Canadian Prime Rate [Member]

U.S. Prime Rate [Member]

U.S. Prime Rate [Member]

2013 [Member]

2013 [Member]

2013 [Member]

2014 [Member]

2014 [Member]

2014 [Member]

2014 [Member]

2014 [Member]

2014 [Member]

2015 [Member]

2015 [Member]

2015 [Member]

2015 [Member]

2016 [Member]

2017 [Member]

2019 [Member]

2020 [Member]

U.S. Credit Facility [Member]

U.S. Credit Facility [Member]

U.S. Credit Facility [Member]

Combined Credit Agreements [Member]

Senior Secured Second Lien Credit Facility [Member]

Senior Secured Second Lien Term Loan Due 2019 [Member]

Senior Notes Due 2015 [Member]

Senior Notes Due 2016 [Member]

Senior Notes Due 2019 [Member]

Senior Notes Due 2021 [Member]

Maximum [Member]

Minimum [Member]

Second Lien Debt [Member]

Second Lien Debt [Member]

Second Lien Debt [Member]

Maximum [Member]

Minimum [Member]

U.S. Credit Facility [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Subordinated Notes [Member]

Second Lien Debt [Member]

Second Lien Debt [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Subordinated Notes [Member]

Second Lien Debt [Member]

Second Lien Debt [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Canadian Credit Facility [Member]

Canadian Credit Facility [Member]

Senior Secured Second Lien Credit Facility [Member]

Senior Secured Second Lien Term Loan Due 2019 [Member]

Senior Secured Second Lien Credit Facility [Member]

Canadian Credit Facility [Member]

Canadian Credit Facility [Member]

Canadian Credit Facility [Member]

Canadian Credit Facility [Member]

Canadian Credit Facility [Member]

Canadian Credit Facility [Member]

Senior Notes Due 2015 [Member]

Senior Notes Due 2016 [Member]

Senior Secured Second Lien Credit Facility [Member]

Senior Secured Second Lien Term Loan Due 2019 [Member]

Senior Notes Due 2015 [Member]

Senior Notes Due 2016 [Member]

Senior Notes Due 2019 [Member]

Senior Secured Second Lien Credit Facility [Member]

Senior Secured Second Lien Term Loan Due 2019 [Member]

Senior Notes Due 2016 [Member]

Senior Notes Due 2019 [Member]

Senior Notes Due 2019 [Member]

Senior Notes Due 2019 [Member]

Senior Notes Due 2021 [Member]

Senior Notes Due 2021 [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument Year Of Maturity

'

'

'

'2015

'2016

'2019

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Current Borrowing Capacity

$325

$350

'

'

'

'

'

'

'

'

$350

[1],[2]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal amount

'

'

'

'

'

'

'

'

'

'

'

625

[1]

200

[1]

11

8

298

325

350

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Scheduled maturity date

'

'

'

'

'

'

'

'

'

'

6-Sep-16

[3]

21-Jun-19

[3]

21-Jun-19

[3]

1-Aug-15

1-Jan-16

15-Aug-19

1-Jul-21

1-Apr-16

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

'

3.99%

[4]

7.00%

7.00%

8.25%

11.75%

9.13%

11.00%

7.13%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Base Interest Rate Options

'

'

'

'

'

'

'

'

'

'

'LIBOR, ABR, CDOR

[5],[6]

'LIBOR floor of 1.25%; ABR floor of 2.25%

'LIBOR floor of 1.25%

'N/A

'N/A

'N/A

'N/A

'N/A

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Financial covenants

'

'

'

'

'

'

'

'

'

'

'- Minimum current ratio of 1.0 - Minimum EBITDA to cash interest expense ratio of 1.10 - Maximum senior secured debt leverage ratio of 2.0

[7],[8]

'N/A

'N/A

'N/A

'N/A

'N/A

'N/A

'N/A

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Significant restrictive covenants

'

'

'

'

'

'

'

'

'

'

'- Incurrence of debt - Incurrence of liens - Payment of dividends - Equity purchases - Asset sales - Affiliate transactions - Limitations on derivatives and investments

[7],[9]

'- Incurrence of debt - Incurrence of liens and 1st lien cap -Payment of dividends - Equity purchases - Asset sales - Affiliate transactions

[7],[9]

'- Incurrence of debt - Incurrence of liens and 1st lien cap -Payment of dividends - Equity purchases - Asset sales - Affiliate transactions

[7],[9]

'- Asset sales

'- Asset sales

'- Incurrence of debt - Incurrence of liens -Payment of dividends - Equity purchases - Asset sales - Affiliate transactions

[7],[9]

'- Incurrence of debt - Incurrence of liens -Payment of dividends - Equity purchases - Asset sales - Affiliate transactions

[7],[9]

'- Incurrence of debt - Incurrence of liens -Payment of dividends - Equity purchases - Asset sales - Affiliate transactions

[7],[9]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Optional redemption

'

'

'

'

'

'

'

'

'

'

'Any time

[7]

'Any time, subject to re-pricing event June 21, 2014: 102 2015: 101

[7]

'Any time, subject to re-pricing event June 21, 2014: 102 2015: 101

[7]

'August 1, 2013: 101.938 2014: par

[7]

'July 1, 2013: 105.875 2014: 102.938 2015: par

[7]

'August 15, 2014: 104.563 2015: 103.042 2016: 101.521 2017: par

[7]

'July 1, 2019: 102.000 2020: par

[7]

'April 1, 2013: 101.188 2014: par

[7]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Make-whole redemption

'

'

'

'

'

'

'

'

'

'

'N/A

'N/A

'N/A

'N/A

'N/A

'Callable prior to August 15, 2014 at make-whole call price of Treasury +50 bps

[7]

'Callable prior to July 1, 2019 at make-whole call price of Treasury +50 bps

[7]

'N/A

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Make-whole redemption

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Change of control

'

'

'

'

'

'

'

'

'

'

'Event of default

[7]

'Put at 101% of principal plus accrued interest

[7]

'Put at 101% of principal plus accrued interest

[7]

'Put at 101% of principal plus accrued interest

[7]

'Put at 101% of principal plus accrued interest

[7]

'Put at 101% of principal plus accrued interest

[7]

'Put at 101% of principal plus accrued interest

[7]

'Put at 101% of principal plus accrued interest

[7]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity Clawback

'

'

'

'

'

'

'

'

'

'

'N/A

'N/A

'N/A

'N/A

'N/A

'N/A

'Redeemable until July 1, 2016 at 111.00%, plus accrued interest for up to 35%

[7]

'N/A

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity Clawback

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

111.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated fair value

'

'

'

'

'

'

'

'

'

'

207.7

[10]

610.2

[10]

195.3

[10]

10.7

[10]

8.6

[10]

294.3

[10]

346.5

[10]

337.5

[10]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Equity interests

'

'

'

'

'

'

100.00%

100.00%

65.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit Agreement Repayment Term Trigerring Event, Maximum Threshold For Measurement

'

$100

$100

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitment fee percentage

'

'

'

'

'

'

'

'

'

1.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current ratio

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Minimum EBITDA to cash interest expense ratio

'

'

'

'

'

'

'

'

'

'

1.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior secured debt leverage ratio

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption percentage of par value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

101.94%

105.88%

101.19%

102.00%

102.00%

100.00%

102.94%

104.56%

100.00%

101.00%

101.00%

100.00%

103.04%

101.52%

100.00%

102.00%

100.00%

Debt Instrument, Reference Rate, Floor

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.25%

1.25%

2.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Applicable margin in addition to interest rate

'

'

'

'

'

'

'

'

'

2.75%

'

'

'

'

'

'

'

'

3.75%

2.75%

'

'

'

3.75%

2.75%

1.00%

2.75%

1.75%

2.75%

1.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of principal plus accrued interest for change of control

'

'

'

'

'

'

'

'

'

'

'

101.00%

101.00%

101.00%

101.00%

101.00%

101.00%

101.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Borrowings under the Amended and Restated U.S. Credit Facility, Second Lien Term Loan and Second Lien Notes due 2019 are guaranteed by certain of Quicksilverbs domestic subsidiaries and are secured (on a first priority basis with respect to the Amended and Restated U.S. Credit Facility and on a second priority basis with respect to the Second Lien Term Loan and the Second Lien Notes due 2019) by 100% of the equity interests of each of Cowtown Pipeline Management, Inc., Cowtown Pipeline Funding, Inc., Cowtown Gas Processing L.P., Cowtown Pipeline L.P., Barnett Shale Operating LLC, Silver Stream Pipeline Company LLC, QPP Parent LLC and QPP Holdings LLC (collectively, the bDomestic Pledged Equityb), 65% of the equity interests of Quicksilver Resources Canada Inc. (bQuicksilver Canadab) and Quicksilver Production Partners Operating Ltd. (with respect to the Amended and Restated U.S. Credit Facility, on a ratable basis with borrowings under the Amended and Restated Canadian Credit Facility) and the majority of Quicksilver's domestic proved oil and gas properties and related assets, (the bDomestic Pledged Propertyb).B Borrowings under the Amended and Restated Canadian Credit Facility are guaranteed by Quicksilver and certain of its domestic subsidiaries and are secured by the Domestic Pledged Equity, the Domestic Pledged Property, 100% of the equity interests of Quicksilver Canada (65% of which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and any Canadian restricted subsidiaries, under the Amended and Restated Canadian Credit Facility, and 65% of the equity interests of Quicksilver Production Partners Operating Ltd. (which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and the majority of Quicksilver Canada's oil and gas properties and related assets. The other debt presented is based upon structural seniority and priority of payment.

[2]

The principal amount for the Combined Credit Agreements represents the global borrowing base as of MarchB 31, 2014.

[3]

The Combined Credit Agreements are required to be repaid 91 days prior to the maturity of the 2015 Senior Notes, the 2016 Senior Notes, the 2016 Senior Subordinated Notes, the Second Lien Term Loan or the Second Lien Notes due 2019, if on the applicable date any amount of such debt remains outstanding. The Second Lien Term Loan and Second Lien Notes due 2019 are required to be repaid (1) 91 days prior to the maturity of the 2019 Senior Notes if more than $100 million of the 2019 Senior Notes remain outstanding and (2) 91 days prior to the maturity of the 2015 Senior Notes, the 2016 Senior Notes or the 2016 Senior Subordinated Notes if on the applicable date the aggregate amount of all such notes remaining outstanding is greater than $100 million.

[4]

Represents the weighted average borrowing rate payable to lenders.

[5]

Amounts outstanding under the Amended and Restated U.S. Credit Facility bear interest, at our election, at (i) adjusted LIBOR (as defined in the Amended and Restated U.S. Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii)B ABR (as defined in the Amended and Restated U.S. Credit Facility), which is the greatest of (a)B the prime rate announced by JPMorgan, (b)B the federal funds rate plus 0.50% and (c)B adjusted LIBOR for an interest period of one month plus 1.00%, plus, in each case under scenario (ii), an applicable margin between 1.75% and 2.75%. We also pay a per annum fee on the LC Exposure (as defined in the Amended and Restated U.S. Credit Facility) of all letters of credit issued under the Amended and Restated U.S. Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated U.S. Credit Facility of 0.50%.

[6]

Amounts outstanding under the Amended and Restated Canadian Credit Facility bear interest, at our election, at (i)B the CDOR Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii)B the Canadian Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75%, (iii)B the U.S. Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75% and (iv)B adjusted LIBOR (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%. We pay a per annum fee on the LC Exposure (as defined in the Amended and Restated Canadian Credit Facility) of all letters of credit issued under the Amended and Restated Canadian Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated Canadian Credit Facility of 0.50%.

[7]

The information presented in this table is qualified in all respects by reference to the full text of the covenants, provisions and related definitions contained in the documents governing the various components of our debt.

[8]

The future minimum required interest coverage ratio for the Combined Credit Agreement is as follows:PeriodB Interest Coverage RatioB PeriodB Interest Coverage RatioQ2 2014B 1.10B Q3 2015B 1.15Q3 2014B 1.10B Q4 2015B 1.20Q4 2014B 1.10B Q1 2016B 1.50Q1 2015B 1.10B Q2 2016B 2.00Q2 2015B 1.15

[9]

Our indentures require us to reinvest or repay senior debt with net cash proceeds from asset sales within one year.

[10]

The estimated fair value is determined using market quotations based on recent trade activity for fixed rate obligations (bLevel 2b inputs). Our Second Lien Term Loan and Second Lien Notes due 2019 feature variable interest rates and we estimate their fair value by using market quotations based on recent trade activity (bLevel 3b input). We consider our Combined Credit Agreements which have a variable interest rate to have a fair value equal to their carrying value (bLevel 1b input).

LongTerm_Debt_LongTerm_Debt_Mi

Long-Term Debt Long-Term Debt (Minimum Required Interest Coverage Ratio) (Details) (Minimum [Member], Combined Credit Agreements [Member])	3 Months Ended
	Mar. 31, 2014
Q2 2014 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.1
Q3 2014 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.1
Q4 2014 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.1
Q1 2015 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.1
Q2 2015 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.15
Q3 2015 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.15
Q4 2015 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.2
Q1 2016 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.5
Q2 2016 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	2

Income_Taxes_Valuation_Allowan

Income Taxes Valuation Allowance (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
UNITED STATES	'
Valuation Allowance [Line Items]	'
Tax Valuation Allowance Expense, Federal	$370.40
CANADA	'
Valuation Allowance [Line Items]	'
Tax Valuation Allowance Expense, Federal	$62.80

Fortune_Creek_Details

Fortune Creek (Details) (CAD)	3 Months Ended
	Mar. 31, 2014
Capital Contribution, Fortune Creek	28,000,000
Reduction in Gathering Rate, Fortune Creek	0.13
KKR [Member]	'
Dedicated years for gas production	10
Payments to acquire interest in joint venture	125,000,000
Percentage of interest by parent in the partnership	50.00%

Quicksilver_Stockholders_Equit2

Quicksilver Stockholders' Equity (Narrative) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
In Millions, except Share data, unless otherwise specified			Restricted Stock [Member]	Restricted Stock [Member]	Equity Option [Member]	Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'
Common stock, shares authorized	400,000,000	400,000,000	'	'	'	'
Shares of common stock outstanding	177,400,000	177,300,000	'	'	'	'
Common stock, par value	$0.01	$0.01	'	'	'	'
Preferred stock, shares authorized	10,000,000	10,000,000	'	'	'	'
Preferred stock, shares outstanding	0	0	'	'	'	'
Preferred stock, par value	$0.01	$0.01	'	'	'	'
Total intrinsic values of options	'	'	'	'	6,300,000	'
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	'	'	$11	'	$1.60	'
Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition	'	'	'March 2017	'	'August 2016	'
Estimated grant date fair value	'	'	2	'	'	'
Fair value of RSUs settled in cash	'	'	2.8	'	'	'
Allocated Share-based Compensation Expense	'	'	3.7	4.5	0.5	1
Total fair value of shares vested	'	'	$9.40	'	'	'
Common stock, shares issued	184,761,865	183,994,879	'	'	'	'
Treasury stock, shares	7,404,835	6,698,640	'	'	'	'

Quicksilver_Stockholders_Equit3

Quicksilver Stockholders' Equity (Assumptions For The Black-Scholes Option Pricing Model For Stock Options Issued) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]	'
Weighted avg grant date fair value	$1.81
Weighted avg risk-free interest rate	0.76%
Expected life (in years)	'5 years 3 months 18 days
Wtd avg volatility	75.00%
Expected dividends	0.00%

Quicksilver_Stockholders_Equit4

Quicksilver Stockholders' Equity (Stock Option Activity) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Equity Option [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Allocated Share-based Compensation Expense	$500,000	$1,000,000
Outstanding at end of period, Shares	6,300,000	'
Stock Options [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Outstanding at beginning of period, Shares	6,771,578	'
Expired, Shares	-20,719	'
Outstanding at end of period, Shares	6,750,859	'
Outstanding at beginning of period, Wtd Avg Exercise Price	$7.82	'
Exercisable at end of period, Shares	5,323,678	'
Expired, Wtd Avg Exercise Price	$9.85	'
Outstanding at end of period, Wtd Avg Exercise Price	$7.81	'
Exercisable at end of period, Wtd Avg Exercise Price	$9.19	'
Outstanding at end of period, Wtd Avg Remaining Contractual Life, Years	'5 years 331 days	'
Exercisable at end of period, Wtd Avg Remaining Contractual Life, Years	'5 years 28 days	'
Outstanding at end of period, Aggregate Intrinsic Value	1,409,000	'
Exercisable at end of period, Aggregate Intrinsic Value	$282,000	'

Quicksilver_Stockholders_Equit5

Quicksilver Stockholders' Equity (Restricted Stock And Stock Unit Activity) (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014
Restricted Stock [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$11
Payable In Shares [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Outstanding at beginning of period, Shares	5,668,090
Granted, Shares	662,170
Vested, Shares	-2,401,580
Forfeited, Shares	-80,209
Outstanding at end of period, Shares	3,848,471
Outstanding at beginning of period, Wtd Avg Grant Date Fair Value	$3.90
Granted, Wtd Avg Grant Date Fair Value	$3.01
Vested, Wtd Avg Grant Date Fair Value	$4.93
Forfeited, Wtd Avg Grant Date Fair Value	$3.77
Outstanding at end of period, Wtd Avg Grant Date Fair Value	$3.11
Payable In Cash [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Outstanding at beginning of period, Shares	1,572,341
Granted, Shares	0
Vested, Shares	-498,535
Forfeited, Shares	-16,893
Outstanding at end of period, Shares	1,056,913
Outstanding at beginning of period, Wtd Avg Grant Date Fair Value	$3.69
Granted, Wtd Avg Grant Date Fair Value	$0
Vested, Wtd Avg Grant Date Fair Value	$4.66
Forfeited, Wtd Avg Grant Date Fair Value	$3.49
Outstanding at end of period, Wtd Avg Grant Date Fair Value	$3.26

Earnings_Per_Share_Reconciliat

Earnings Per Share (Reconciliation Of Components Used To Compute Basic And Diluted Net Income Per Common Share) (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'		'
Net income (loss) attributable to Quicksilver	($58,833)		($59,707)
Undistributed Earnings Allocated to Participating Securities	0	[1]	0	[1]
Loss available to shareholders	($58,833)		($59,707)
Weighted Average Number of Shares Outstanding, Basic	173,497,000		171,826,000
Share-based compensation awards	0	[2]	0	[2]
Weighted Average Number of Shares Outstanding, Diluted	173,497,000		171,826,000
Earnings (loss) per common share - basic	($0.34)		($0.35)
Earnings (loss) per common share - diluted	($0.34)	[2]	($0.35)	[2]
Stock Options [Member]	'		'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'		'
Antidilutive shares excluded from the diluted share calculation	6,800,000		5,000,000
Restricted Stock Units (RSUs) [Member]	'		'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'		'
Antidilutive shares excluded from the diluted share calculation	300,000		900,000
[1]	Restricted share awards that contain nonforfeitable rights to dividends are participating securities and, therefore, should be included in computing earnings using the two-class method. Participating securities, however, do not participate in undistributed net losses because there is no contractual obligation to do so.
[2]	For the three months ended MarchB 31, 2014, 6.8 million shares associated with our stock options and 0.3 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the three months ended MarchB 31, 2013, 5.0 million shares associated with our stock options and 0.9 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations.

Condensed_Consolidating_Financ2

Condensed Consolidating Financial Information (Schedule Of Condensed Consolidated Balance Sheets) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets	$294,246	$393,960
Property and equipment	875,118	860,805
Investment in subsidiaries (equity method)	0	0
Other assets	90,463	114,961
Total assets	1,259,827	1,369,726
Current liabilities	127,828	134,797
Long-term liabilities	2,207,364	2,240,899
Stockholders' equity	-1,075,365	-1,005,970
Total liabilities and stockholders' equity	1,259,827	1,369,726
Quicksilver Resources Inc. [Member]	'	'
Current assets	256,321	349,586
Property and equipment	480,136	455,822
Investment in subsidiaries (equity method)	-231,131	-217,852
Other assets	479,128	472,792
Total assets	984,454	1,060,348
Current liabilities	116,207	124,275
Long-term liabilities	1,943,612	1,942,043
Stockholders' equity	-1,075,365	-1,005,970
Total liabilities and stockholders' equity	984,454	1,060,348
Restricted Guarantor Subsidiaries [Member]	'	'
Current assets	11,510	10,735
Property and equipment	15,160	15,486
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	26,670	26,221
Current liabilities	12,577	12,210
Long-term liabilities	19,242	19,242
Stockholders' equity	-5,149	-5,231
Total liabilities and stockholders' equity	26,670	26,221
Restricted Non-Guarantor Subsidiaries [Member]	'	'
Current assets	53,154	53,034
Property and equipment	302,224	307,865
Investment in subsidiaries (equity method)	-1,345	-33,840
Other assets	24,617	32,892
Total assets	378,650	359,951
Current liabilities	25,244	17,167
Long-term liabilities	559,958	542,659
Stockholders' equity	-206,552	-199,875
Total liabilities and stockholders' equity	378,650	359,951
Restricted Subsidiary Eliminations [Member]	'	'
Current assets	-27,979	-19,642
Property and equipment	0	0
Investment in subsidiaries (equity method)	231,131	217,852
Other assets	-413,282	-390,723
Total assets	-210,130	-192,513
Current liabilities	-27,979	-19,642
Long-term liabilities	-413,282	-390,723
Stockholders' equity	231,131	217,852
Total liabilities and stockholders' equity	-210,130	-192,513
Quicksilver And Restricted Subsidiaries [Member]	'	'
Current assets	293,006	393,713
Property and equipment	797,520	779,173
Investment in subsidiaries (equity method)	-1,345	-33,840
Other assets	90,463	114,961
Total assets	1,179,644	1,254,007
Current liabilities	126,049	134,010
Long-term liabilities	2,109,530	2,113,221
Stockholders' equity	-1,055,935	-993,224
Total liabilities and stockholders' equity	1,179,644	1,254,007
Unrestricted Non-Guarantor Subsidiaries [Member]	'	'
Current assets	46	909
Property and equipment	0	0
Investment in subsidiaries (equity method)	-1,345	-33,840
Other assets	0	0
Total assets	-1,299	-32,931
Current liabilities	25	888
Long-term liabilities	0	0
Stockholders' equity	-1,324	-33,819
Total liabilities and stockholders' equity	-1,299	-32,931
Fortune Creek [Member]	'	'
Current assets	1,218	1,110
Property and equipment	77,598	81,632
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	78,816	82,742
Current liabilities	1,778	1,671
Long-term liabilities	1,506	1,546
Stockholders' equity	75,532	79,525
Total liabilities and stockholders' equity	78,816	82,742
Consolidating Eliminations [Member]	'	'
Current assets	-24	-1,772
Property and equipment	0	0
Investment in subsidiaries (equity method)	2,690	67,680
Other assets	0	0
Total assets	2,666	65,908
Current liabilities	-24	-1,772
Long-term liabilities	96,328	126,132
Stockholders' equity	-93,638	-58,452
Total liabilities and stockholders' equity	$2,666	$65,908

Condensed_Consolidating_Financ3

Condensed Consolidating Financial Information (Schedule of Condensed Consolidated Statements Of Income (Loss)) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Revenue	$91,786	$118,703
Operating expenses	102,840	122,577
Equity in net earnings of subsidiaries	0	0
Operating income (loss)	-11,054	-3,874
Fortune Creek accretion	-4,401	-4,845
Interest expense and other	40,727	44,092
Income tax (expense) benefit	-2,651	-6,896
Net income (loss)	-58,833	-59,707
Other comprehensive income (loss)	-12,105	-14,454
Equity in OCI of subsidiaries	0	0
Comprehensive income (loss)	-70,938	-74,161
Quicksilver Resources Inc. [Member]	'	'
Revenue	62,910	88,900
Operating expenses	75,401	97,024
Equity in net earnings of subsidiaries	-5,689	-4,191
Operating income (loss)	-18,180	-12,315
Fortune Creek accretion	0	0
Interest expense and other	38,011	41,168
Income tax (expense) benefit	-2,642	-6,224
Net income (loss)	-58,833	-59,707
Other comprehensive income (loss)	-8,798	-11,003
Equity in OCI of subsidiaries	-3,307	-3,451
Comprehensive income (loss)	-70,938	-74,161
Restricted Guarantor Subsidiaries [Member]	'	'
Revenue	374	214
Operating expenses	291	30
Equity in net earnings of subsidiaries	0	0
Operating income (loss)	83	184
Fortune Creek accretion	0	0
Interest expense and other	0	0
Income tax (expense) benefit	-29	0
Net income (loss)	54	184
Other comprehensive income (loss)	0	0
Equity in OCI of subsidiaries	0	0
Comprehensive income (loss)	54	184
Restricted Non-Guarantor Subsidiaries [Member]	'	'
Revenue	28,502	29,589
Operating expenses	30,265	28,459
Equity in net earnings of subsidiaries	-1,282	-1,908
Operating income (loss)	-3,045	-778
Fortune Creek accretion	0	0
Interest expense and other	2,718	2,925
Income tax (expense) benefit	20	-672
Net income (loss)	-5,743	-4,375
Other comprehensive income (loss)	-3,307	-3,451
Equity in OCI of subsidiaries	0	0
Comprehensive income (loss)	-9,050	-7,826
Restricted Subsidiary Eliminations [Member]	'	'
Revenue	0	0
Operating expenses	0	0
Equity in net earnings of subsidiaries	5,689	4,191
Operating income (loss)	5,689	4,191
Fortune Creek accretion	0	0
Interest expense and other	0	0
Income tax (expense) benefit	0	0
Net income (loss)	5,689	4,191
Other comprehensive income (loss)	0	0
Equity in OCI of subsidiaries	3,307	3,451
Comprehensive income (loss)	8,996	7,642
Quicksilver And Restricted Subsidiaries [Member]	'	'
Revenue	91,786	118,703
Operating expenses	105,957	125,513
Equity in net earnings of subsidiaries	-1,282	-1,908
Operating income (loss)	-15,453	-8,718
Fortune Creek accretion	0	0
Interest expense and other	40,729	44,093
Income tax (expense) benefit	-2,651	-6,896
Net income (loss)	-58,833	-59,707
Other comprehensive income (loss)	-12,105	-14,454
Equity in OCI of subsidiaries	0	0
Comprehensive income (loss)	-70,938	-74,161
Unrestricted Non-Guarantor Subsidiaries [Member]	'	'
Revenue	0	0
Operating expenses	0	0
Equity in net earnings of subsidiaries	3,119	2,937
Operating income (loss)	3,119	2,937
Fortune Creek accretion	0	0
Interest expense and other	0	0
Income tax (expense) benefit	0	0
Net income (loss)	3,119	2,937
Other comprehensive income (loss)	0	0
Equity in OCI of subsidiaries	0	0
Comprehensive income (loss)	3,119	2,937
Fortune Creek [Member]	'	'
Revenue	4,942	5,325
Operating expenses	1,825	2,389
Equity in net earnings of subsidiaries	0	0
Operating income (loss)	3,117	2,936
Fortune Creek accretion	0	0
Interest expense and other	2	1
Income tax (expense) benefit	0	0
Net income (loss)	3,119	2,937
Other comprehensive income (loss)	0	0
Equity in OCI of subsidiaries	0	0
Comprehensive income (loss)	3,119	2,937
Consolidating Eliminations [Member]	'	'
Revenue	-4,942	-5,325
Operating expenses	-4,942	-5,325
Equity in net earnings of subsidiaries	-1,837	-1,029
Operating income (loss)	-1,837	-1,029
Fortune Creek accretion	-4,401	-4,845
Interest expense and other	0	0
Income tax (expense) benefit	0	0
Net income (loss)	-6,238	-5,874
Other comprehensive income (loss)	0	0
Equity in OCI of subsidiaries	0	0
Comprehensive income (loss)	($6,238)	($5,874)

Condensed_Consolidating_Financ4

Condensed Consolidating Financial Information (Schedule of Condensed Consolidated Statements of Cash Flows) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Schedule of Equity Method Investments [Line Items]	'	'
Net cash flow provided (used) by operating activities	($19,984)	($14,394)
Purchases of property, plant and equipment	-38,729	-27,442
Investment in subsidiary	0	'
Proceeds from sale of properties and equipment	1,026	608
Payments to acquire marketable securities	-55,682	0
Proceeds from Sale and Maturity of Marketable Securities	124,694	'
Net cash used by investing activities	31,309	-26,834
Issuance of debt	0	54,040
Repayments of debt	0	-4,011
Debt issuance costs	-162	0
Intercompany note	0	'
Intercompany financing	0	'
Contribution received	0	'
Distribution of Fortune Creek Partnership funds	-29,472	-3,198
Purchase of treasury stock	-2,271	-1,007
Net cash flow provided (used) by financing activities	-31,905	45,824
Effect of exchange rates on cash	731	303
Net increase (decrease) in cash and equivalents	-19,849	4,899
Cash and cash equivalents at beginning of period	89,103	4,951
Cash and cash equivalents at end of period	69,254	9,850
Quicksilver Resources Inc. [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Net cash flow provided (used) by operating activities	-29,198	-27,331
Purchases of property, plant and equipment	-28,772	-18,824
Investment in subsidiary	-7,385	'
Proceeds from sale of properties and equipment	910	591
Payments to acquire marketable securities	-55,682	'
Proceeds from Sale and Maturity of Marketable Securities	124,694	'
Net cash used by investing activities	33,765	-18,233
Issuance of debt	'	51,000
Repayments of debt	'	0
Debt issuance costs	-162	'
Intercompany note	-22,559	'
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	-2,271	-1,007
Net cash flow provided (used) by financing activities	-24,992	49,993
Effect of exchange rates on cash	0	0
Net increase (decrease) in cash and equivalents	-20,425	4,429
Cash and cash equivalents at beginning of period	83,893	4,618
Cash and cash equivalents at end of period	63,468	9,047
Restricted Guarantor Subsidiaries [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Net cash flow provided (used) by operating activities	14	4
Purchases of property, plant and equipment	-14	-4
Investment in subsidiary	0	'
Proceeds from sale of properties and equipment	0	0
Payments to acquire marketable securities	0	'
Proceeds from Sale and Maturity of Marketable Securities	0	'
Net cash used by investing activities	-14	-4
Issuance of debt	'	0
Repayments of debt	'	0
Debt issuance costs	0	'
Intercompany note	0	'
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	0	0
Net cash flow provided (used) by financing activities	0	0
Effect of exchange rates on cash	0	0
Net increase (decrease) in cash and equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Restricted Non-Guarantor Subsidiaries [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Net cash flow provided (used) by operating activities	9,075	10,648
Purchases of property, plant and equipment	-9,934	-8,110
Investment in subsidiary	-26,395	'
Proceeds from sale of properties and equipment	116	17
Payments to acquire marketable securities	0	'
Proceeds from Sale and Maturity of Marketable Securities	0	'
Net cash used by investing activities	-36,213	-8,093
Issuance of debt	'	3,040
Repayments of debt	'	-4,011
Debt issuance costs	0	'
Intercompany note	22,559	'
Intercompany financing	7,385	'
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	0	0
Net cash flow provided (used) by financing activities	29,944	-971
Effect of exchange rates on cash	-2,357	-1,584
Net increase (decrease) in cash and equivalents	449	0
Cash and cash equivalents at beginning of period	4,135	0
Cash and cash equivalents at end of period	4,584	0
Restricted Subsidiary Eliminations [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investment in subsidiary	7,385	'
Net cash used by investing activities	7,385	'
Debt issuance costs	0	'
Intercompany note	0	'
Intercompany financing	-7,385	'
Distribution of Fortune Creek Partnership funds	0	'
Purchase of treasury stock	0	'
Net cash flow provided (used) by financing activities	-7,385	'
Net increase (decrease) in cash and equivalents	0	'
Cash and cash equivalents at beginning of period	0	'
Cash and cash equivalents at end of period	0	'
Quicksilver And Restricted Subsidiaries [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Net cash flow provided (used) by operating activities	-20,109	-16,679
Purchases of property, plant and equipment	-38,720	-26,938
Investment in subsidiary	-26,395	'
Proceeds from sale of properties and equipment	1,026	608
Payments to acquire marketable securities	-55,682	'
Proceeds from Sale and Maturity of Marketable Securities	124,694	'
Net cash used by investing activities	4,923	-26,330
Issuance of debt	'	54,040
Repayments of debt	'	-4,011
Debt issuance costs	-162	'
Intercompany note	0	'
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	-2,271	-1,007
Net cash flow provided (used) by financing activities	-2,433	49,022
Effect of exchange rates on cash	-2,357	-1,584
Net increase (decrease) in cash and equivalents	-19,976	4,429
Cash and cash equivalents at beginning of period	88,028	4,618
Cash and cash equivalents at end of period	68,052	9,047
Unrestricted Non-Guarantor Subsidiaries [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Net cash flow provided (used) by operating activities	0	0
Purchases of property, plant and equipment	0	0
Investment in subsidiary	-26,395	'
Proceeds from sale of properties and equipment	0	0
Payments to acquire marketable securities	0	'
Proceeds from Sale and Maturity of Marketable Securities	0	'
Net cash used by investing activities	-26,395	0
Issuance of debt	'	0
Repayments of debt	'	0
Debt issuance costs	0	'
Intercompany note	0	'
Contribution received	26,395	'
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	0	0
Net cash flow provided (used) by financing activities	26,395	0
Effect of exchange rates on cash	-1	0
Net increase (decrease) in cash and equivalents	-1	0
Cash and cash equivalents at beginning of period	22	0
Cash and cash equivalents at end of period	21	0
Fortune Creek [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Net cash flow provided (used) by operating activities	125	2,285
Purchases of property, plant and equipment	-9	-504
Investment in subsidiary	0	'
Proceeds from sale of properties and equipment	0	0
Payments to acquire marketable securities	0	'
Proceeds from Sale and Maturity of Marketable Securities	0	'
Net cash used by investing activities	-9	-504
Issuance of debt	'	0
Repayments of debt	'	0
Debt issuance costs	0	'
Intercompany note	0	'
Contribution received	26,395	'
Distribution of Fortune Creek Partnership funds	-29,472	-3,198
Purchase of treasury stock	0	0
Net cash flow provided (used) by financing activities	-3,077	-3,198
Effect of exchange rates on cash	3,089	1,887
Net increase (decrease) in cash and equivalents	128	470
Cash and cash equivalents at beginning of period	1,053	333
Cash and cash equivalents at end of period	1,181	803
Consolidating Eliminations [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investment in subsidiary	52,790	'
Net cash used by investing activities	52,790	'
Contribution received	-52,790	'
Net cash flow provided (used) by financing activities	-52,790	'
Effect of exchange rates on cash	0	'
Net increase (decrease) in cash and equivalents	0	'
Cash and cash equivalents at beginning of period	0	'
Cash and cash equivalents at end of period	$0	'

Segment_Information_Operating_

Segment Information (Operating Income And Property And Equipment Costs Incurred) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'
Number of geographical segments	2	'	'
Revenue	$91,786	$118,703	'
Depletion, depreciation and accretion	13,955	18,256	'
Operating income (loss)	-11,054	-3,874	'
Property and equipment costs incurred	42,272	24,337	'
Property, plant and equipment - net	875,118	'	860,805
Total assets	1,259,827	'	1,369,726
UNITED STATES	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	62,903	81,553	'
Depletion, depreciation and accretion	7,379	13,128	'
Operating income (loss)	2,181	6,922	'
Property and equipment costs incurred	33,216	20,553	'
Property, plant and equipment - net	476,579	'	451,840
Total assets	770,747	'	895,388
CANADA	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	27,962	36,260	'
Depletion, depreciation and accretion	4,827	3,190	'
Operating income (loss)	-611	2,841	'
Property and equipment costs incurred	8,954	3,064	'
Property, plant and equipment - net	300,837	'	306,423
Total assets	378,650	'	359,951
Midstream [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	5,863	6,215	'
Depletion, depreciation and accretion	1,243	1,340	'
Operating income (loss)	3,201	3,124	'
Property and equipment costs incurred	11	80	'
Property, plant and equipment - net	92,758	'	97,118
Total assets	105,486	'	108,963
Corporate [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	0	0	'
Depletion, depreciation and accretion	506	598	'
Operating income (loss)	-15,825	-16,761	'
Property and equipment costs incurred	91	640	'
Property, plant and equipment - net	4,944	'	5,424
Total assets	4,944	'	5,424
Elimination [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenue	-4,942	-5,325	'
Depletion, depreciation and accretion	0	0	'
Operating income (loss)	0	0	'
Property and equipment costs incurred	0	0	'
Property, plant and equipment - net	0	'	0
Total assets	$0	'	$0

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information (Cash Paid Or Received For Interest And Income Taxes) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Supplemental Cash Flow Information [Abstract]	'	'
Interest, net of capitalized interest	$49,103	$69,633
Income taxes	($7,951)	$35

Supplemental_Cash_Flow_Informa3

Supplemental Cash Flow Information (Other Significant Noncash Transactions) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Supplemental Cash Flow Information [Abstract]	'	'
Capital Expenditures Incurred but Not yet Paid	$13,128	$8,964

Transactions_With_Related_Part1

Transactions With Related Parties (Details) (USD $)	3 Months Ended			1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013
	Mercury Exploration Company [Member]	Mercury Exploration Company [Member]	Darden Family [Member]	Thomas F. Darden [Member]	Thomas F. Darden [Member]	Restricted Stock [Member]	Use Of Airplane [Member]
						Thomas F. Darden [Member]	Darden Family [Member]
Related Party Transaction [Line Items]	'	'	'	'	'	'	'
Revenue from Related Parties	$100,000	$100,000	'	'	'	'	'
Consulting fee payments	'	'	'	'	135,000	'	'
Office allowance payments	'	'	'	'	37,500	'	'
COBRA payments	'	'	'	'	39,000	'	'
Cash bonus	'	'	'	286,650	'	'	'
Vested equity awards	'	'	'	'	'	72,662	'
Percentage of ownership interest	'	'	30.00%	'	'	'	'
Payments to related parties	'	'	'	'	'	'	300,000
Options issued, fair value	'	'	'	$191,100	'	'	'