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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($)
$ in Thousands
Total
Common Stock
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Dec. 31, 2020   14,909,097    
Beginning Balance at Dec. 31, 2020 $ 529,314 $ 131,072 $ 377,502 $ 20,740
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net Income 52,523   52,523  
Other comprehensive loss, net of tax (16,573)     (16,573)
Stock-based compensation expense 2,007 $ 2,007    
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings and tax benefit (shares)   46,732    
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings (241) $ (241)    
Common stock repurchased (in shares)   (106,502)    
Common stock repurchased (4,913) $ (4,913)    
Cash dividends declared (16,133)   (16,133)  
Ending Balance (in shares) at Sep. 30, 2021   14,849,327    
Ending Balance at Sep. 30, 2021 545,984 $ 127,925 413,892 4,167
Beginning Balance (in shares) at Jun. 30, 2021   14,951,067    
Beginning Balance at Jun. 30, 2021 545,548 $ 132,278 404,602 8,668
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net Income 14,640   14,640  
Other comprehensive loss, net of tax (4,501)     (4,501)
Stock-based compensation expense 493 $ 493    
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings and tax benefit (shares)   4,762    
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings 67 $ 67    
Common stock repurchased (in shares)   (106,502)    
Common stock repurchased (4,913) $ (4,913)    
Cash dividends declared (5,350)   (5,350)  
Ending Balance (in shares) at Sep. 30, 2021   14,849,327    
Ending Balance at Sep. 30, 2021 545,984 $ 127,925 413,892 4,167
Beginning Balance (in shares) at Dec. 31, 2021   14,739,956    
Beginning Balance at Dec. 31, 2021 541,294 $ 123,111 424,412 (6,229)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net Income 46,088   46,088  
Other comprehensive loss, net of tax (130,227)     (130,227)
Stock-based compensation expense 2,039 $ 2,039    
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings and tax benefit (shares)   49,117    
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings (374) $ (374)    
Common stock repurchased (in shares)   (225,245)    
Common stock repurchased (10,240) $ (10,240)    
Cash dividends declared (17,573)   (17,573)  
Ending Balance (in shares) at Sep. 30, 2022   14,563,828    
Ending Balance at Sep. 30, 2022 431,007 $ 114,536 452,927 (136,456)
Beginning Balance (in shares) at Jun. 30, 2022   14,625,041    
Beginning Balance at Jun. 30, 2022 446,381 $ 116,825 444,522 (114,966)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net Income 14,267   14,267  
Other comprehensive loss, net of tax (21,490)     (21,490)
Stock-based compensation expense 522 $ 522    
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings and tax benefit (shares)   2,476    
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings 16 $ 16    
Common stock repurchased (in shares)   (63,689)    
Common stock repurchased (2,827) $ (2,827)    
Cash dividends declared (5,862)   (5,862)  
Ending Balance (in shares) at Sep. 30, 2022   14,563,828    
Ending Balance at Sep. 30, 2022 $ 431,007 $ 114,536 $ 452,927 $ (136,456)