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	$ 690	$ 511	$ 213
State and local	495	(311)	(242)
Foreign	9,959	7,362	5,294
Total current income tax expense	11,144	7,562	5,265
Deferred income tax expense (benefit):
Federal	12	1,834	2,378
State and local	(95)	348	182
Foreign	36	(1,393)	(3,159)
Total deferred income tax expense	(47)	789	(599)
Total tax expense	$ 11,097	$ 8,351	$ 4,666