Annual report pursuant to Section 13 and 15(d)

Income Taxes (Summary of Uncertain Tax Positions) (Details)

v3.21.1
Income Taxes (Summary of Uncertain Tax Positions) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Taxes [Abstract]    
Uncertain tax positions - January 1 $ 101 $ 60
Gross increases - current period tax positions 14 41
Uncertain tax positions - December 31, 2020 $ 115 $ 101