Reconciliation of Income Taxes Computed at Statutory Rate (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Line Items]
Federal provision at statutory rate	$ (5,176)	$ 8,079	$ 7,590
U.S./foreign tax rate differential	(809)	665	555
Foreign non-deductible expenses	1,174	1,557
Foreign tax provision	114	83	582
State taxes, net of federal benefit	1,009	1,194	37
Change in uncertain tax positions	(253)	(359)	184
Change in valuation allowance	856	(43,804)	(3,951)
Tax credits	(326)	(37)	(259)
Share-based compensation	636	539	325
Reduction of prior year's tax attributes		255	(1,424)
Permanent goodwill			(412)
Entity reclassification gain		4,167
Other	438	713	(132)
(Benefit) provision for income taxes	$ (2,337)	$ (26,948)	$ 3,095