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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($)
$ in Thousands
Common stock amount
Additional paid-in capital
Retained earnings
Accumulated other comprehensive income (loss)
Treasury stock
Total
Balance at beginning of period at Dec. 31, 2021 $ 32,857 $ 190,876 $ 215,592 $ 2,303 $ (17,481) $ 424,147
Increase (Decrease) in Stockholders' Equity            
Net income     19,615     19,615
Other comprehensive income (loss)       (43,274)   (43,274)
Cash dividends declared     (7,509)     (7,509)
Net issuance to employee stock plans, including related tax effects   376     148 524
Recognition of stock based compensation   94       94
Balance at end of period at Jun. 30, 2022 32,857 191,346 227,698 (40,971) (17,333) 393,597
Balance at beginning of period at Dec. 31, 2021 32,857 190,876 215,592 2,303 (17,481) 424,147
Increase (Decrease) in Stockholders' Equity            
Net income           31,045
Other comprehensive income (loss)       (64,892)   (64,892)
Balance at end of period at Sep. 30, 2022 32,857 191,438 235,218 (62,589) (16,959) 379,965
Balance at beginning of period at Jun. 30, 2022 32,857 191,346 227,698 (40,971) (17,333) 393,597
Increase (Decrease) in Stockholders' Equity            
Net income     11,430     11,430
Other comprehensive income (loss)       (21,618)   (21,618)
Cash dividends declared     (3,910)     (3,910)
Net issuance to employee stock plans, including related tax effects   (530)     374 (156)
Recognition of stock based compensation   622       622
Balance at end of period at Sep. 30, 2022 32,857 191,438 235,218 (62,589) (16,959) 379,965
Balance at beginning of period at Dec. 31, 2022 32,857 191,922 243,815 (58,340) (16,804) 393,450
Increase (Decrease) in Stockholders' Equity            
Net income     23,803     23,803
Other comprehensive income (loss)       776   776
Cash dividends declared     (8,148)     (8,148)
Net issuance to employee stock plans, including related tax effects   (264)     416 152
Recognition of stock based compensation   683       683
Balance at end of period at Jun. 30, 2023 32,857 192,341 259,470 (57,564) (16,388) 410,716
Balance at beginning of period at Dec. 31, 2022 32,857 191,922 243,815 (58,340) (16,804) 393,450
Increase (Decrease) in Stockholders' Equity            
Net income           34,907
Other comprehensive income (loss)       (13,060)   (13,060)
Balance at end of period at Sep. 30, 2023 32,857 192,673 266,365 (71,400) (16,287) 404,208
Balance at beginning of period at Jun. 30, 2023 32,857 192,341 259,470 (57,564) (16,388) 410,716
Increase (Decrease) in Stockholders' Equity            
Net income     11,104     11,104
Other comprehensive income (loss)       (13,836)   (13,836)
Cash dividends declared     (4,209)     (4,209)
Net issuance to employee stock plans, including related tax effects   (381)     101 (280)
Recognition of stock based compensation   713       713
Balance at end of period at Sep. 30, 2023 $ 32,857 $ 192,673 $ 266,365 $ (71,400) $ (16,287) $ 404,208