Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal	$ (2,464)us-gaap_CurrentFederalTaxExpenseBenefit	$ (21,022)us-gaap_CurrentFederalTaxExpenseBenefit	$ 2,515us-gaap_CurrentFederalTaxExpenseBenefit
Foreign	2,325us-gaap_CurrentForeignTaxExpenseBenefit	3,921us-gaap_CurrentForeignTaxExpenseBenefit	7,576us-gaap_CurrentForeignTaxExpenseBenefit
State and local	55	148	(317)
Total current provision (benefit) for income taxes	(84)us-gaap_CurrentIncomeTaxExpenseBenefit	(16,953)us-gaap_CurrentIncomeTaxExpenseBenefit	9,774us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred:
Federal	(11,230)	(11,589)	(482)
Foreign	(291)	(462)	727
State and local	191	57	1,638
Total deferred provision (benefit) for income taxes	(11,330)us-gaap_DeferredIncomeTaxExpenseBenefit	(11,994)us-gaap_DeferredIncomeTaxExpenseBenefit	1,883us-gaap_DeferredIncomeTaxExpenseBenefit
Total provision (benefit) for income taxes	$ (11,414)us-gaap_IncomeTaxExpenseBenefit	$ (28,947)us-gaap_IncomeTaxExpenseBenefit	$ 11,657us-gaap_IncomeTaxExpenseBenefit

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