Components of Income (Loss) Before Provision (Benefit) for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items]
Domestic									$ (66,470)	$ (38,674)	$ (30,577)
Foreign									15,175	20,025	30,039
Loss before provision (benefit) for income taxes	$ (13,890)	$ 36,875	$ (47,018)	$ (27,262)	$ (34,171)	$ 36,426	$ 288	$ (21,192)	$ (51,295)	$ (18,649)	$ (538)