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Income Taxes - Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Beginning balance $ 14,654 $ 10,993 $ 8,771
Increase in tax positions for prior years 305 479 221
Decrease in tax positions for prior years (952) (535) (1,550)
Decrease in tax positions for prior year settlement (22) (208) 0
Decrease in tax positions for prior years due to statutes lapsing (426) (26) (164)
Increase in tax positions for current year 3,309 3,999 3,722
Change due to translation of foreign currencies (63) (48) (7)
Ending balance $ 16,805 $ 14,654 $ 10,993