Annual report pursuant to Section 13 and 15(d)

Income Taxes Unrecognized Tax Benefits (Details)

v3.7.0.1
Income Taxes Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Gross unrecognized tax benefits, beginning of year $ 970 $ 900
Increases related to prior year income tax positions 58 2
Increases related to current year income tax positions 14 68
Gross unrecognized tax benefits, end of year $ 1,042 $ 970