Income Taxes - Income Tax Provision (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:
Federal	$ 5,535	$ 2,550	$ 6,047
State	139	184	754
Foreign	28	(61)	140
Total current income tax expense	5,702	2,673	6,941
Deferred:
Federal	(488)	2,142	3,518
State	133	360	2
Foreign	622	175	2,633
Reversal of valuation allowance	(156)	(132)	(178)
Deferred income tax expense benefit	111	2,545	5,975
Total provision (benefit) for taxes on income	$ 5,813	$ 5,218	$ 12,916