Income Taxes - Summary of the Components of Our Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current income tax expense:
Federal	$ 47,784	$ 55,877	$ 49,736
State	8,936	5,927	7,818
Foreign	17,066	30,543	37,480
Current income tax expense	73,786	92,347	95,034
Deferred income tax (benefit) expense:
Federal	6,366	(3,113)	216
State	704	(347)	148
Foreign	(1,597)	(1,500)	(1,295)
Deferred income tax (benefit) expense:	5,473	(4,960)	(931)
Provision for income taxes	$ 79,259	$ 87,387	$ 94,103