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Shareholders' Equity (Tables)
12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Schedule of Stock by Class
Share activity during the year ended December 31, 2019 is as follows:
Preferred Stock Series FCommon Stock IssuedTreasury Stock HeldCommon Stock Outstanding
Balance at January 1, 20196,000  93,686,311  1,508,456  92,177,855  
Restricted share activity—  —  (16,045) 16,045  
Stock options exercised—  —  (59,861) 59,861  
Common stock repurchased—  —  227,199  (227,199) 
Balance at December 31, 20196,000  93,686,311  1,659,749  92,026,562