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Equity and Stock-based Compensation - Share Purchases (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Apr. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Value of shares repurchased   $ 469      
Share Purchases          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of common stock authorized for repurchase         $ 10,000
Amount utilized under the program to repurchase shares     $ 1,000    
Number of stock repurchase 0 139,000 0 139,000  
Value of shares repurchased   $ 500   $ 500