Income Taxes - Reconciliation of Income Tax Provision (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Tax at U.S. federal statutory tax rate	$ 17,964	$ 15,805	$ 22,280
State income taxes, net of federal tax benefit	82	(61)	143
Tax holidays	(4,686)	(6,450)	(7,532)
Change in valuation allowance, net of related adjustments	1,354	(538)	610
Foreign rate differential	(9,319)	(7,078)	(5,765)
Changes in uncertain tax positions	(4)	(613)	(2,748)
Permanent differences	9,051	3,531	915
Foreign withholding and other taxes	4,643	1,263	4,546
Change of assertion related to foreign earnings distribution		47	(255)
Tax credits	(5,020)	(699)	(852)
Total provision for income taxes	$ 14,065	$ 5,207	$ 11,342