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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2021 $ 245,798 $ 7,753 $ 204,276 $ 112,220 $ (78,904) $ 453
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 16,820     16,820    
Cash dividends (7,654)     (7,654)    
Issuance of common shares pursuant to stock-based compensation plan, net (420)   (2,638)   2,218  
Exercise of SARs (85)   (328)   243  
Stock-based compensation expense 3,172   3,172      
Purchase of common shares (5,299)       (5,299)  
Other comprehensive income (loss) (46,718)         (46,718)
Ending balance at Jun. 30, 2022 205,614 7,753 204,482 121,386 (81,742) (46,265)
Beginning balance at Mar. 31, 2022 217,078 7,753 203,149 116,646 (82,348) (28,122)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 8,562     8,562    
Cash dividends (3,822)     (3,822)    
Issuance of common shares pursuant to stock-based compensation plan, net 70   (749)   819  
Stock-based compensation expense 2,082   2,082      
Purchase of common shares (213)       (213)  
Other comprehensive income (loss) (18,143)         (18,143)
Ending balance at Jun. 30, 2022 205,614 7,753 204,482 121,386 (81,742) (46,265)
Beginning balance at Dec. 31, 2022 206,325 7,753 207,422 131,682 (81,211) (59,321)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 14,255     14,255    
Cash dividends (7,941)     (7,941)    
Issuance of common shares pursuant to stock-based compensation plan, net (786)   (3,327)   2,541  
Exercise of SARs (116)   (238)   122  
Stock-based compensation expense 2,859   2,877      
Purchase of common shares (2,377)       (2,377)  
Other comprehensive income (loss) 2,927         2,927
Ending balance at Jun. 30, 2023 215,146 7,753 206,734 137,996 (80,943) (56,394)
Beginning balance at Mar. 31, 2023 217,500 7,753 206,614 134,822 (79,419) (52,270)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 7,138     7,138    
Cash dividends (3,964)     (3,964)    
Issuance of common shares pursuant to stock-based compensation plan, net 64   (807)   871  
Stock-based compensation expense 909   927      
Purchase of common shares (2,377)       (2,377)  
Other comprehensive income (loss) (4,124)         (4,124)
Ending balance at Jun. 30, 2023 $ 215,146 $ 7,753 $ 206,734 $ 137,996 $ (80,943) $ (56,394)