Income Taxes Components of Provision for Income Taxes Reflected on Consolidated Statements of Operations (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
Current:
Federal									$ 24,607	$ 24,956	$ 2,367
Foreign									11,982	6,007	4,447
State and Local									7,541	7,912	4,942
Total Current									44,130	38,875	11,756
Deferred:
Federal									5,992	(2,458)	11,368
Foreign									4,733	(4,756)	(1,129)
State and Local									8,834	(753)	729
Total Deferred									19,559	(7,967)	10,968
Total	$ 26,474	$ 12,350	$ 17,130	$ 7,735	$ 18,586	$ 7,187	$ 9,773	$ (4,638)	$ 63,689	$ 30,908	$ 22,724