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Consolidated Statements of Shareholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Shares
Common Shares Held in Treasury
Retained Earnings
Retained Earnings
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss)
Other Equity
Common shares beginning balance (in shares) at Dec. 31, 2019     20,404          
Common shares held in treasury beginning balance (in shares) at Dec. 31, 2019       6,744        
Beginning balance at Dec. 31, 2019 $ 645,743 $ 0 $ 249,674 $ (186,845) $ 624,954 $ 0 $ (45,462) $ 3,422
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 15,462              
Other comprehensive income 6,729           6,729  
Net pension curtailments and settlements 94           94  
Cash dividends declared (9,257)       (9,257)      
Stock-based compensation activity (in shares)     117 117        
Stock-based compensation activity 5,619   $ 8,867 $ (3,147) (101)      
Payments for withholding taxes for stock-based compensation awards (in shares)     39 39        
Payments for withholding taxes for stock-based compensation awards (2,221)     $ (2,221)        
Repurchase of shares (in shares)     158 158        
Repurchase of shares (6,766)     $ (6,766)        
Directors' deferred compensation (in shares)     4 4        
Directors' deferred compensation 227   $ 101 $ (208)       334
Common shares ending balance (in shares) at Dec. 31, 2020     20,328          
Common shares held in treasury ending balance (in shares) at Dec. 31, 2020       6,820        
Ending balance at Dec. 31, 2020 655,630   $ 258,642 $ (199,187) 631,058   (38,639) 3,756
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 72,474       72,474      
Other comprehensive income (1,530)           (1,530)  
Net pension curtailments and settlements 0              
Cash dividends declared (9,697)       (9,697)      
Stock-based compensation activity (in shares)     164 164        
Stock-based compensation activity 6,517   $ 13,142 $ (6,546) (79)      
Payments for withholding taxes for stock-based compensation awards (in shares)     49 49        
Payments for withholding taxes for stock-based compensation awards (3,318)     $ (3,318)        
Directors' deferred compensation (in shares)     5 5        
Directors' deferred compensation 364   $ 194 $ (869)       1,039
Common shares ending balance (in shares) at Dec. 31, 2021     20,448          
Common shares held in treasury ending balance (in shares) at Dec. 31, 2021       6,700        
Ending balance at Dec. 31, 2021 720,440   $ 271,978 $ (209,920) 693,756   (40,169) 4,795
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income 85,990              
Other comprehensive income (1,740)           (1,740)  
Net pension curtailments and settlements (551)              
Cash dividends declared (10,160)       (10,160)      
Stock-based compensation activity (in shares)     135 135        
Stock-based compensation activity 8,813   $ 15,977 $ (6,996) (168)      
Payments for withholding taxes for stock-based compensation awards (in shares)     43 43        
Payments for withholding taxes for stock-based compensation awards (3,593)     $ (3,593)        
Directors' deferred compensation (in shares)     3 3        
Directors' deferred compensation 240   $ 145 $ (355)       450
Common shares ending balance (in shares) at Dec. 31, 2022     20,543          
Common shares held in treasury ending balance (in shares) at Dec. 31, 2022       6,605        
Ending balance at Dec. 31, 2022 $ 799,990   $ 288,100 $ (220,864) $ 769,418   $ (41,909) $ 5,245