XML 125 R72.htm IDEA: XBRL DOCUMENT v3.8.0.1
Income Taxes - Schedule of Components of Provision For (Benefit From) Income Taxes (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Current:      
Federal $ 0 $ 0 $ 0
State 2 2 2
Foreign 319 139 240
Total current 321 141 242
Deferred:      
Federal 0 (212) 0
State 0 0 0
Foreign 0 0 0
Total deferred 0 (212) 0
Total provision for (benefit from) income taxes $ 321 $ (71) $ 242