XML 87 R57.htm IDEA: XBRL DOCUMENT v3.6.0.2
Income Taxes - Components (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Current:      
U.S. federal $ 1 $ 123 $ 0
State 26 26 0
Provision for income taxes $ 27 $ 149 $ 0