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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     9,112     9,112
Other comprehensive income (loss)       (23,658)   (23,658)
Cash dividends declared     (3,603)     (3,603)
Net issuance to employee stock plans, including related tax effects   436     111 547
Recognition of stock based compensation   454       454
Balance at end of period at Mar. 31, 2022 32,857 191,766 221,101 (21,355) (17,370) 406,999
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
Other comprehensive income (loss)       (43,274)   (43,274)
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 Mar. 31, 2022 32,857 191,766 221,101 (21,355) (17,370) 406,999
Increase (Decrease) in Stockholders' Equity            
Net income     10,503     10,503
Other comprehensive income (loss)       (19,616)   (19,616)
Cash dividends declared     (3,906)     (3,906)
Net issuance to employee stock plans, including related tax effects   (60)     37 (23)
Recognition of stock based compensation   (360)       (360)
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, 2022 32,857 191,922 243,815 (58,340) (16,804) 393,450
Increase (Decrease) in Stockholders' Equity            
Net income     13,012     13,012
Other comprehensive income (loss)       5,189   5,189
Cash dividends declared     (3,943)     (3,943)
Net issuance to employee stock plans, including related tax effects   40     363 403
Recognition of stock based compensation   299       299
Balance at end of period at Mar. 31, 2023 32,857 192,261 252,884 (53,151) (16,441) 408,410
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
Other comprehensive income (loss)       776   776
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 Mar. 31, 2023 32,857 192,261 252,884 (53,151) (16,441) 408,410
Increase (Decrease) in Stockholders' Equity            
Net income     10,791     10,791
Other comprehensive income (loss)       (4,413)   (4,413)
Cash dividends declared     (4,205)     (4,205)
Net issuance to employee stock plans, including related tax effects   (304)     53 (251)
Recognition of stock based compensation   384       384
Balance at end of period at Jun. 30, 2023 $ 32,857 $ 192,341 $ 259,470 $ (57,564) $ (16,388) $ 410,716