Taxation - Components of Income Tax Expense (Benefit) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:
Federal	$ 1,114	$ 1,529	$ 1,456
State	334	425	402
Foreign	836	471	482
Total current	2,284	2,425	2,340
Deferred:
Federal	642	9	674
State	(78)	1	95
Foreign	(84)	(133)	0
Total deferred	480	(123)	769
Income tax expense	$ 2,764	$ 2,302	$ 3,109