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Income Taxes - Components of Income Tax (Benefit) Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Federal current	$ 0us-gaap_CurrentFederalTaxExpenseBenefit	$ (260)us-gaap_CurrentFederalTaxExpenseBenefit	$ (842)us-gaap_CurrentFederalTaxExpenseBenefit
Federal deferred	(6,773)	(16,913)	(1,542)
State current	361	1,312	629
State deferred	(948)	(2,949)	401
Foreign current	(1,898)us-gaap_CurrentForeignTaxExpenseBenefit	3,242us-gaap_CurrentForeignTaxExpenseBenefit	2,927us-gaap_CurrentForeignTaxExpenseBenefit
Foreign deferred	7,905	(4,227)	(143)
Income Tax Expense (Benefit)	$ (1,353)us-gaap_IncomeTaxExpenseBenefit	$ (19,795)us-gaap_IncomeTaxExpenseBenefit	$ 1,430us-gaap_IncomeTaxExpenseBenefit

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

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

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

Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.