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Income Taxes Deferred Income Taxes (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]    
Deferred Tax Assets, Operating Loss Carryforwards $ 26,539 $ 25,064
Deferred Tax Assets, Intangible Assets 2,381 2,319
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost 1 28
Deferred Tax Assets, Other 992 893
Deferred Tax Assets, Gross 29,913 28,304
Deferred Tax Assets, Valuation Allowance (29,854) (28,246)
Deferred Tax Assets, Net of Valuation Allowance 59 58
Deferred Tax Liabilities, Indefinite-lived Intangible Assets (74) (74)
Deferred Tax Liabilities, Gross (74) (74)
Deferred Tax Liabilities, Net $ (15) $ (16)