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Earnings Per Common Share (Earnings per common share) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Earnings Per Common Share [Abstract]    
Net income $ 1,801 $ 23,470
Non-convertible preferred stock (Series A,B and D) (1,628) (1,628)
Income available to common shareholders 173 21,842
Income available to common sharesholders assuming conversion $ 173 $ 21,842
Average common shares outstanding 51,404 51,305
Average potential common shares-options 309 321
Average common shares outstanding and equivalents 51,713 51,626
Earnings per common share - basic $ 0 $ 0.43
Earnings per common share - diluted $ 0 $ 0.42