Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Unrecognized Tax Benefits Roll Forward (Details)

v3.19.1
Income Taxes - Schedule of Unrecognized Tax Benefits Roll Forward (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]    
Unrecognized tax benefits $ 436 $ 623
Additions for tax positions of current period 0 0
Additions for tax positions of prior periods 0 0
Deferred rate change 0 (187)
Unrecognized tax benefits $ 436 $ 436