Income Taxes - Summary of Income Tax Expense (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:
Federal		$ 50	$ (6,844)
State	(19)	(440)	190
Foreign	172	156	311
Total current	153	(234)	(6,343)
Deferred:
Federal			(873)
State			1,713
Tax deficiencies related to restricted stock expense			(426)
Total deferred			414
Total provision	$ 153	$ (234)	$ (5,929)