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Consolidated Statement of Stockholders' Equity - USD ($)
$ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
Common stock
Retained earnings
Retained earnings
Cumulative Effect, Period of Adoption, Adjustment
Accumulated other comprehensive income (loss), net
Accumulated other comprehensive income (loss), net
Cumulative Effect, Period of Adoption, Adjustment
Balance at beginning of the year, shares at Dec. 31, 2017     29,928,000        
Balance at the beginning of the year at Dec. 31, 2017 $ 508,305 $ 0 $ 360,590 $ 149,013 $ 93 $ (1,298) $ (93)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Restricted stock awards forfeited, shares     29,000        
Restricted stock awards forfeited $ 0            
Exercise of stock options, shares 9,842   10,000        
Exercise of stock options $ 133   $ 133        
Stock-based compensation expense 2,744   $ 2,744        
Common stock repurchased, shares     (53,000)        
Common stock repurchased (1,704)   $ (1,704)        
Net income 53,057     53,057      
Other comprehensive income (loss), net of tax (6,064)         (6,064)  
Common stock issued in business combinations, shares     6,960,000        
Common stock issued in business combinations 230,043   $ 230,043        
Cash dividends declared on common stock (25,791)     (25,791)      
Balance at end of the year, shares at Dec. 31, 2018     36,874,000        
Balance at the end of the year at Dec. 31, 2018 760,723 (399) $ 591,806 176,372 (399) (7,455) 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Restricted stock awards forfeited, shares     62,000        
Restricted stock awards forfeited $ 0            
Exercise of stock options, shares 3,901   4,000        
Exercise of stock options $ 58   $ 58        
Stock-based compensation expense 3,231   $ 3,231        
Common stock repurchased, shares     (321,000)        
Common stock repurchased (8,636)   $ (8,636)        
Net income 67,557     67,557      
Other comprehensive income (loss), net of tax 17,833         17,833  
Common stock issued in business combinations 0            
Cash dividends declared on common stock (31,056)     (31,056)      
Balance at end of the year, shares at Dec. 31, 2019     36,619,000        
Balance at the end of the year at Dec. 31, 2019 809,311 $ (5,615) $ 586,459 212,474 $ (5,615) 10,378 $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Restricted stock awards forfeited, shares     110,000        
Restricted stock awards forfeited $ 0            
Exercise of stock options, shares 8,248   8,000        
Exercise of stock options $ 122   $ 122        
Stock-based compensation expense 3,559   $ 3,559        
Common stock repurchased, shares     (825,000)        
Common stock repurchased (19,119)   $ (19,119)        
Net income 46,570     46,570      
Other comprehensive income (loss), net of tax 14,640         14,640  
Common stock issued in business combinations 0            
Cash dividends declared on common stock (29,029)     (29,029)      
Balance at end of the year, shares at Dec. 31, 2020     35,912,000        
Balance at the end of the year at Dec. 31, 2020 $ 820,439   $ 571,021 $ 224,400   $ 25,018