Income Tax Provision (Benefit) for Federal, and State and Local Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current:
Federal	$ 40,315	$ 37,745	$ 23,650
State and local	512	(256)	100
Foreign	2,722	1,472	338
Total current	43,549	38,961	24,088
Deferred:
Federal	28,066	13,703	17,372
State and local	(329)	(315)	(235)
Foreign		60
Total deferred	27,737	13,448	17,137
Total	$ 71,286	$ 52,409	$ 41,225