Income Taxes - The provision (benefit) for income taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	$ 334us-gaap_CurrentFederalTaxExpenseBenefit	$ 69us-gaap_CurrentFederalTaxExpenseBenefit	$ 342us-gaap_CurrentFederalTaxExpenseBenefit
State	686	2,038	1,093
Foreign	0us-gaap_CurrentForeignTaxExpenseBenefit	(5,184)us-gaap_CurrentForeignTaxExpenseBenefit	4,125us-gaap_CurrentForeignTaxExpenseBenefit
Current income tax provision (benefit)	1,020us-gaap_CurrentIncomeTaxExpenseBenefit	(3,077)us-gaap_CurrentIncomeTaxExpenseBenefit	5,560us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	10,241	(90,827)	0
State	526	(1,600)	(28)
Foreign	(1,494)	5,564	1,250
Deferred income tax provision (benefit)	9,273us-gaap_DeferredIncomeTaxExpenseBenefit	(86,863)us-gaap_DeferredIncomeTaxExpenseBenefit	1,222us-gaap_DeferredIncomeTaxExpenseBenefit
Tax provision (benefit):
Federal	10,575	(90,758)	342
State	1,212	438	1,065
Foreign	(1,494)	380	5,375
Income tax provision (benefit)	$ 10,293us-gaap_IncomeTaxExpenseBenefit	$ (89,940)us-gaap_IncomeTaxExpenseBenefit	$ 6,782us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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