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Subsequent Events (Details) - $ / shares
12 Months Ended
Feb. 13, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Subsequent Events        
Quarterly cash dividends on common stock   $ 0.54 $ 0.43 $ 0.325
Subsequent Event | Series A Preferred Stock        
Subsequent Events        
Dividend declared per share of Series A preferred stock $ 0.384375      
Subsequent Event | Dividend Declared        
Subsequent Events        
Quarterly cash dividends on common stock $ 0.15