Annual report pursuant to Section 13 and 15(d)

Stock Repurchases (Details)

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Stock Repurchases (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Equity, Class of Treasury Stock [Line Items]    
Purchase of treasury shares $ 1,961 $ 525
Securities repurchased plan, remaining authorized repurchase amount $ 102,200  
Share Incentive Plans    
Equity, Class of Treasury Stock [Line Items]    
Treasury stock, shares acquired (in shares) 17,730 8,338
Purchase of treasury shares $ 600 $ 400
Share Repurchase Program    
Equity, Class of Treasury Stock [Line Items]    
Treasury stock, shares acquired (in shares) 41,600 3,912
Purchase of treasury shares $ 1,400 $ 100