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Income Taxes - Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal	$ (11,525)us-gaap_CurrentFederalTaxExpenseBenefit	$ (38,243)us-gaap_CurrentFederalTaxExpenseBenefit	$ 857us-gaap_CurrentFederalTaxExpenseBenefit
State	8	93	212
International	1,619us-gaap_CurrentForeignTaxExpenseBenefit	1,988us-gaap_CurrentForeignTaxExpenseBenefit	1,193us-gaap_CurrentForeignTaxExpenseBenefit
Deferred:
Federal	25,722	(10,543)	(2,053)
State	8,249	3,023	(1,362)
International	380	(1,059)	(353)
Total provision for (benefit from) income taxes	$ 24,453us-gaap_IncomeTaxExpenseBenefit	$ (44,741)us-gaap_IncomeTaxExpenseBenefit	$ (1,506)us-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.