XML 120 R88.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes - Schedule of Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Current:      
Federal $ 0 $ 0 $ 0
State 11 18 21
Foreign 56 183 54
Total income tax expense $ 67 $ 201 $ 75