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Stock Repurchase Plan Stock Repurchase Plan (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Stock Repurchase Plan [Abstract]    
Authorized common stock repurchase amount $ 75,000  
Common stock repurchased, shares 1,463,377  
Treasury Stock, Value, Acquired, Cost Method $ 26,586 $ 1,292
Stock Repurchased During Period, Value 10,000  
Stock Repurchase Program, Remaining Authorized Repurchase Amount $ 58,400