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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
 [1]
Common stock
Retained earnings
Retained earnings
Cumulative Effect, Period of Adoption, Adjustment
 [1]
Accumulated other comprehensive income (loss), net
Beginning balance, shares at Dec. 31, 2019     36,619      
Beginning balance at Dec. 31, 2019 $ 809,311   $ 586,459 $ 212,474   $ 10,378
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Restricted stock awards forfeited, shares     87      
Exercise of stock options, shares     5      
Exercise of stock options 71   $ 71      
Stock-based compensation expense 969   $ 969      
Common stock repurchased, shares     (822)      
Common stock repurchased (19,060)   $ (19,060)      
Net income 12,191     12,191    
Other comprehensive income (loss), net of tax 7,914         7,914
Cash dividends declared on common stock (7,343)     (7,343)    
Ending balance, shares at Mar. 31, 2020     35,889      
Ending balance at Mar. 31, 2020 798,438 $ (5,615) $ 568,439 211,707 $ (5,615) 18,292
Beginning balance, shares at Dec. 31, 2020     35,912      
Beginning balance at Dec. 31, 2020 820,439   $ 571,021 224,400   25,018
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Restricted stock awards forfeited, shares     92      
Stock-based compensation expense 870   $ 870      
Common stock repurchased, shares     (23)      
Common stock repurchased (687)   $ (687)      
Net income 25,344     25,344    
Other comprehensive income (loss), net of tax (11,557)         (11,557)
Cash dividends declared on common stock (7,258)     (7,258)    
Ending balance, shares at Mar. 31, 2021     35,981      
Ending balance at Mar. 31, 2021 $ 827,151   $ 571,204 $ 242,486   $ 13,461
[1] (1) Effective January 1, 2020, Company adopted ASU 2016-13, Financial Instruments - Credit Losses.