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Income Taxes - Statutory united states federal income tax rate (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Income Tax Rate Reconciliation    
Federal income tax provision (benefit) at statutory rate $ 408 $ (27)
State tax expense net of federal tax benefit 130 (63)
Foreign taxes 22 24
Other (137) 42
Change in valuation allowance (152) 629
Total income tax provision (benefit) $ 271 $ 605
Income Tax Rate Reconciliation    
Federal income tax provision (benefit) at statutory rate (in percent) 21.00% 21.00%
State tax expense net of federal tax benefit (in percent) 6.70% 49.00%
Foreign taxes (in percent) 1.10% (18.50%)
Other (in percent) (7.10%) (33.10%)
Change in valuation allowance (in percent) (7.80%) 489.00%
Income tax provision (benefit) (in percent) 13.90% 470.60%