Other Current Liabilities - Schedule of Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Other Liabilities, Current [Abstract]
Accrued legal	$ 1,458	$ 1,065
Accrued services	849	518
Income taxes payable	129	69
Other current liabilities	563	573
Total other current liabilities	$ 2,999	$ 2,225