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Income Taxes (Components of Provision for Income Taxes) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Income Taxes [Abstract]    
Provision for income taxes, federal and state $ 0 $ 0
Provision for income taxes, foreign 109 91
Total provision for income taxes $ 109 $ 91