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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Operating Loss and Tax Credit Carryforwards [Line Items]    
Effective income tax rate (0.80%) 11.70%
Income tax expense (benefit) $ 642 $ (12,881)
Valuation allowance 31,079 25,349
Domestic operating loss carryforwards 243,600  
State operating loss carryforwards 10,100  
Operating loss carryforward subject to expiration 14,900  
Operating loss carryforwards not subject to expiration 238,800  
Foreign operating loss carryforwards 186,900  
Unrecognized tax benefits 8,358 12,382
Decrease in unrecognized tax benefits is reasonably possible 1,600  
Unrecognized tax benefits that would impact effective tax rate 8,400  
Accrued interest and penalties $ 500 1,400
U.S. Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”)    
Operating Loss and Tax Credit Carryforwards [Line Items]    
Income tax expense (benefit)   (16,000)
U.S.    
Operating Loss and Tax Credit Carryforwards [Line Items]    
Valuation allowance   15,600
Non-US    
Operating Loss and Tax Credit Carryforwards [Line Items]    
Valuation allowance   $ 15,500