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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Preferred Stock
Common Stock
Common Stock
Class A Common Stock
Common Stock
Class B Common Stock
Additional Paid-in Capital
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2015 $ 652,405 $ 190,750   $ 395 $ 1 $ 429,790 $ 63,534 $ (29,070) $ (2,995)
Comprehensive income (loss):                  
Net income 115,416           115,416    
Other comprehensive income (loss), net (6,047)               (6,047)
Issuance of stock 120,255 120,255 $ 175,078 120 1 174,957      
Redemption of preferred stock (42,000) (41,934)         (66)    
Cancellation of common stock for termination of Stock Employee Compensation Trust 0     25   (25)      
Exercise and cash settlement of stock options (359)         (359)   0  
Stock-based compensation expense 11,947         11,947      
Restricted stock surrendered due to employee tax liability (4,436)     (3)   (4,433)      
Tax effect from stock compensation plan 2,116         2,116      
Shares purchased under Dividend Reinvestment Plan 58         233 (175)    
Stock appreciation right dividend equivalents (759)           (759)    
Dividends declared (23,521)           (23,521)    
Preferred stock dividends (19,914)           (19,914)    
Ending Balance at Dec. 31, 2016 980,239 269,071   537 2 614,226 134,515 (29,070) (9,042)
Comprehensive income (loss):                  
Net income 57,709           57,709    
Other comprehensive income (loss), net 14,269               14,269
Issuance of stock     0 4 3 (7)      
Cancellation of common stock for termination of Stock Employee Compensation Trust 0     (25)   25   0  
Exercise and cash settlement of stock options 2,043     3   1,756   284  
Stock-based compensation expense 12,134         12,134      
Restricted stock surrendered due to employee tax liability (6,824)     (2)   (6,822)      
Shares purchased under Dividend Reinvestment Plan (58)         123 (181)    
Stock appreciation right dividend equivalents (811)           (811)    
Dividends declared (25,942)           (25,942)    
Preferred stock dividends (20,451)           (20,451)    
Ending Balance at Dec. 31, 2017 1,012,308 269,071   517 5 621,435 144,839 (28,786) 5,227
Comprehensive income (loss):                  
Net income 45,472           45,472    
Other comprehensive income (loss), net (29,840)               (29,840)
Issuance of stock     $ 0 2 0 (2)      
Redemption of preferred stock (40,250) (37,943)         (2,307)    
Stock-based compensation expense 6,565         6,565      
Restricted stock surrendered due to employee tax liability (2,366)     (1)   (2,365)      
Shares purchased under Dividend Reinvestment Plan (53)         201 (254)    
Stock appreciation right dividend equivalents (811)           (811)    
Dividends declared (25,987)           (25,987)    
Preferred stock dividends (19,504)           (19,504)    
Ending Balance at Dec. 31, 2018 $ 945,534 $ 231,128   $ 518 $ 5 $ 625,834 $ 140,952 $ (28,786) $ (24,117)