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Income Taxes Income taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Unrecognized Tax Benefit [Roll Forward]        
Beginning Balance $ 2,295 $ 1,150 $ 1,511  
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions 0 1,145 0  
Reductions for tax positions of prior years 1,150 0 361  
Ending Balance 1,145 2,295 1,150  
Valuation Allowance 3,753 4,968 2,230 $ 649
Deferred Tax Liabilities, Undistributed Foreign Earnings 3,138 2,964    
Deferred Income Tax Expense (Benefit) 1,280 $ (8,353) $ 5,144  
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount $ 1,215