Income Taxes - Schedule of Reconciliation of Income Tax Provision and Statutory Rate (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Tax expense at statutory rate	$ 2,194	$ 5,223
Increase (decrease) in tax resulting from:
State income tax, net of federal benefit	311	694
Domestic Production Activities deduction	(295)	(415)
Change in uncertain tax position reserves	599	110
Foreign permanent differences	510
Impact of foreign rate differences and adjustments	(295)	(94)
Current and prior years R&D tax credits	(3,649)	(1,100)
Other	112	95
Nondeductible transaction costs	411
Income tax provision from continuing operations	$ (102)	$ 4,513