Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
Income Tax Disclosure [Abstract] | |||
Unrecognized tax benefits — January 1 | $ 157 | $ 157 | |
Gross increases — tax positions in prior period | |||
Gross decreases — tax positions in prior period | $ (157) | ||
Unrecognized tax benefits — December 31, | $ 157 |