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Income Taxes - Change In Valuation Allowance (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Change in valuation allowance      
Increase in valuation allowance for current year increase in net operating losses $ 108,540    
Increase in valuation allowance for current year net increase in deferred tax assets other than net operating losses 50,660    
Increase in valuation allowance due to change in tax rates (16,926)    
Net increase in valuation allowance 142,274 $ 52,917 $ 16,416
U.S.      
Change in valuation allowance      
Increase in valuation allowance for current year increase in net operating losses 105,544    
Increase in valuation allowance for current year net increase in deferred tax assets other than net operating losses 49,974    
Increase in valuation allowance due to change in tax rates (14,561)    
Net increase in valuation allowance 140,957 52,412 15,720
Foreign      
Change in valuation allowance      
Increase in valuation allowance for current year increase in net operating losses 2,996    
Increase in valuation allowance for current year net increase in deferred tax assets other than net operating losses 686    
Increase in valuation allowance due to change in tax rates (2,365)    
Net increase in valuation allowance $ 1,317 $ 505 $ 696