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Common Stock and Dividends (Details) - USD ($)
1 Months Ended
Aug. 01, 2022
Feb. 28, 2022
Feb. 23, 2022
Feb. 17, 2021
Apr. 30, 2009
Common Stock and Dividends          
Cash dividends paid to common shareholders (in dollars per share)   $ 0.60   $ 0.60  
Repurchase of common stock, authorized amount     $ 150,000,000   $ 40,000,000
Period of repurchase of common stock     12 months   12 months
Cumulative number of shares repurchased under all stock repurchase programs 13,435,377        
Cumulative cost of shares repurchased under all stock repurchase programs $ 403,680,000