v3.5.0.2
Property and Equipment - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Property, Plant and Equipment [Abstract]        
Depreciation expense $ 22 $ 26 $ 43 $ 48