Other Long-Term Liabilities - Summary of Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Payables And Accruals [Abstract]
Series B convertible preferred stock dividend payable	$ 2,100
Intellectual property purchase liability	1,600
Deferred tax liability	300	$ 300
Other	1,700
Total	$ 5,689	$ 282