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Income Taxes Rate Reconciliation for Income Taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Percent [Abstract]    
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 26.50% 26.50%
Income Tax Disclosure [Abstract]    
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount $ (1,531) $ (1,134)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount (37) (77)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount 1,588 15,104
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount 0 85
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount 119 (13,371)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount (135) (607)
Benefit from income taxes $ 4 $ 0