Components of Other Current Liabilities - Components of Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Other Liabilities, Current [Abstract]
Accrued legal	$ 968	$ 1,065
Accrued services	1,543	518
Income taxes payable	77	69
Other current liabilities	628	573
Total other current liabilities	$ 3,216	$ 2,225