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Consolidated Statements of Shareholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Capital in Excess of Par Value
Retained Earnings
Accumulated Other Comprehensive Loss
Treasury Stock
Beginning Balance at Dec. 31, 2019 $ 555,959 $ 544 $ 59,900 $ 725,795 $ (77,896) $ (152,384)
Statement of Stockholders' Equity [Abstract]            
Net income (loss) 21,298     21,298    
Other comprehensive income (loss) 19,243       19,243  
Comprehensive income (loss) 40,541          
Cash dividends declared (23,728)     (23,728)    
Share-based compensation expense 5,655   5,655      
Delivery of treasury shares:            
RSUs and PSAs (420)   (2,077)     1,657
Employee stock options exercised — net (75)   (217)     142
Ending Balance at Dec. 31, 2020 577,932 544 63,261 723,365 (58,653) (150,585)
Statement of Stockholders' Equity [Abstract]            
Net income (loss) 6,937     6,937    
Other comprehensive income (loss) (21,651)       (21,651)  
Comprehensive income (loss) (14,714)          
Cash dividends declared (24,702)     (24,702)    
Share-based compensation expense 5,063   5,063      
Delivery of treasury shares:            
RSUs and PSAs (815)   (3,538)     2,723
Employee stock options exercised — net (2)   (7)     5
Ending Balance at Dec. 31, 2021 542,762 544 64,779 705,600 (80,304) (147,857)
Statement of Stockholders' Equity [Abstract]            
Net income (loss) (194,208)     (194,208)    
Other comprehensive income (loss) (17,591)       (17,591)  
Comprehensive income (loss) (211,799)          
Cash dividends declared (12,529)     (12,529)    
Share-based compensation expense 831   831      
Delivery of treasury shares:            
RSUs and PSAs (1,261)   (4,947)     3,686
Employee stock options exercised — net 0          
Ending Balance at Dec. 31, 2022 $ 318,004 $ 544 $ 60,663 $ 498,863 $ (97,895) $ (144,171)