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Income Taxes - Rollforward of Valuation Allowance (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Roll forward of valuation allowance:      
BALANCE AT BEGINNING OF THE YEAR $ 51,744    
BALANCE AT END OF THE YEAR 47,514 $ 51,744  
Valuation Allowance of Deferred Tax Assets      
Roll forward of valuation allowance:      
BALANCE AT BEGINNING OF THE YEAR 51,744 46,938 $ 60,003
(CREDITED) CHARGED TO EXPENSE (1,333) 8,406 (8,337)
OTHER INCREASES/ (DECREASES) (2,897) (3,600) (4,728)
BALANCE AT END OF THE YEAR $ 47,514 $ 51,744 $ 46,938