Quicksilver Stockholders' Equity (Stock Option Activity) (Details) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 800,000	$ 2,700,000
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
Forfeited, Shares	(44,950)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	$ 1.65
Expired, Shares	(102,033)
Outstanding at end of period, Shares	6,624,595
Outstanding at beginning of period, Wtd Avg Exercise Price	$ 7.82
Exercisable at end of period, Shares	5,242,364
Expired, Wtd Avg Exercise Price	$ 9.89
Outstanding at end of period, Wtd Avg Exercise Price	$ 7.83
Exercisable at end of period, Wtd Avg Exercise Price	$ 9.18
Outstanding at end of period, Wtd Avg Remaining Contractual Life, Years	5 years 255 days
Exercisable at end of period, Wtd Avg Remaining Contractual Life, Years	4 years 327 days
Outstanding at end of period, Aggregate Intrinsic Value	1,443,000
Exercisable at end of period, Aggregate Intrinsic Value	$ 315,000