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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock
Surplus
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Treasury Stock
Total
Balance at Dec. 31, 2020 $ 275 $ 190,875 $ 154,614 $ 18,153   $ 363,917
Balance (in shares) at Dec. 31, 2020 27,457,306          
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income     42,677     42,677
Other comprehensive loss       (13,616)   (13,616)
Stock-based compensation   538       538
Issuance of common stock upon vesting of restricted stock units (in shares) 20,225          
Repurchase of common stock         $ (2,323) (2,323)
Repurchase of common stock (in shares) (143,103)          
Cash dividends and dividend equivalents     (12,372)     (12,372)
Balance at Sep. 30, 2021 $ 275 191,413 184,919 4,537 (2,323) 378,821
Balance (in shares) at Sep. 30, 2021 27,334,428          
Balance at Jun. 30, 2021 $ 275 191,185 175,328 8,386 (1,980) 373,194
Balance (in shares) at Jun. 30, 2021 27,355,053          
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income     13,715     13,715
Other comprehensive loss       (3,849)   (3,849)
Stock-based compensation   228       228
Repurchase of common stock         (343) (343)
Repurchase of common stock (in shares) (20,625)          
Cash dividends and dividend equivalents     (4,124)     (4,124)
Balance at Sep. 30, 2021 $ 275 191,413 184,919 4,537 (2,323) 378,821
Balance (in shares) at Sep. 30, 2021 27,334,428          
Balance at Dec. 31, 2021 $ 293 220,891 194,132 1,471 (4,906) 411,881
Balance (in shares) at Dec. 31, 2021 28,986,061          
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income     43,316     43,316
Other comprehensive loss       (78,933)   (78,933)
Stock-based compensation   1,602       1,602
Issuance of common stock upon vesting of restricted stock units, net of tax withholdings   (57)       (57)
Issuance of common stock upon vesting of restricted stock units (in shares) 31,944          
Repurchase of common stock         (4,783) (4,783)
Repurchase of common stock (in shares) (265,379)          
Cash dividends and dividend equivalents     (13,953)     (13,953)
Balance at Sep. 30, 2022 $ 293 222,436 223,495 (77,462) (9,689) 359,073
Balance (in shares) at Sep. 30, 2022 28,752,626          
Balance at Jun. 30, 2022 $ 293 222,087 212,506 (52,820) (8,257) 373,809
Balance (in shares) at Jun. 30, 2022 28,831,197          
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income     15,627     15,627
Other comprehensive loss       (24,642)   (24,642)
Stock-based compensation   349       349
Repurchase of common stock         (1,432) (1,432)
Repurchase of common stock (in shares) (78,571)          
Cash dividends and dividend equivalents     (4,638)     (4,638)
Balance at Sep. 30, 2022 $ 293 $ 222,436 $ 223,495 $ (77,462) $ (9,689) $ 359,073
Balance (in shares) at Sep. 30, 2022 28,752,626