XML 46 R33.htm IDEA: XBRL DOCUMENT v3.8.0.1
Consolidated Financial Statements Details - Schedule of Other Income, Net (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Other Income and Expenses [Abstract]    
Interest expense   $ (2,355)
Interest income $ 181 1
Gain on fair value change of warrant liability   3,118
Other 2 22
Other income, net $ 183 $ 786