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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)

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