Income Taxes - Schedule of Provision for Income Taxes from Continuing Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Current:
Federal	$ 6,742	$ 6,657	$ 20,004	$ 8,705
State and local	1,823	887	4,717	1,834
Foreign	312	908	602	787
Total current provision	8,877	8,452	25,323	11,326
Deferred:
Federal	(380)	(232)	3,885	12,509
State and local	(79)	(428)	699	2,486
Foreign	(289)		(519)	1
Total deferred provision	(748)	(660)	4,065	14,996
Provision for income taxes	$ 8,129	$ 7,792	$ 29,388	$ 26,322