Annual report pursuant to Section 13 and 15(d)

Income Taxes Unrecognized Tax Benefits (Details)

v3.19.1
Income Taxes Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Gross unrecognized tax benefits, beginning of year $ 1,136 $ 1,042
Increases related to prior year income tax positions 2 70
Increases related to current year income tax positions 586 24
Gross unrecognized tax benefits, end of year $ 1,724 $ 1,136