Income Taxes - Domestic and Foreign Components of Income (loss) Before Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Domestic	$ 32,341	$ 52,184	$ 57,145
Foreign	51,955	37,757	44,858
Net income before provision for income taxes	$ 84,296	$ 89,941	$ 102,003