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Stock Based Compensation - Schedule of Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Income tax benefit $ (316) $ (538) $ (781) $ (1,330)
Net stock based compensation expense 1,188 1,951 2,936 4,828
Deferred stock based compensation liability 350   350  
Employee compensation and benefits        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Employee compensation and benefits 1,401 2,287 3,372 5,750
Other Expense        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Employee compensation and benefits $ 103 $ 202 $ 345 $ 408