Income Taxes - Components of Company's Income Tax Provision (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current tax expense:
Federal
State	234	263	650
Foreign	95	93	57
Total	329	356	707
Deferred tax expense (benefit):
Federal	5,088	1,178	333
State	748	173	49
Foreign
Change in valuation allowance	(36,226)	(1,323)	(324)
Total	(30,390)	28	58
Unrecognized tax benefit	(28)	17	78
Income tax provision	$ (30,089)	$ 401	$ 843