Quarterly report pursuant to Section 13 or 15(d)

Changes in Equity (Details)

v3.23.1
Changes in Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance $ 772,887 $ 651,711
Beginning balance, treasury stock (in shares) 60,477  
Net income $ 86,568 97,900
Share-based compensation, net of forfeitures 2,370 1,481
Repurchases of common stock (6,749)  
Shares exchanged for tax withholdings (939)  
Periodic pension costs, net of income taxes (25) 8
Ending balance $ 829,051 $ 727,876
Ending balance, treasury stock (in shares) 62,836  
Dividend paid per common stock (in USD per share) $ 3.25 $ 3.00
Periodic pension costs, net of income taxes $ (6) $ 2
Common Stock    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance (in shares) 7,695,679 7,744,695
Beginning balance $ 78 $ 78
Share-based compensation, net of forfeitures (in shares) 1,756 595
Repurchases of common stock (in shares) (3,627)  
Surrendered (in shares) 488  
Ending balance (in shares) 7,693,320 7,745,290
Ending balance $ 78 $ 78
Treasury Stock    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance $ (104,139) $ (15,417)
Beginning balance, treasury stock (in shares) 60,477 11,461
Share-based compensation, forfeitures (in shares) (1,756) (595)
Share-based compensation, net of forfeitures $ 3,033 $ 800
Repurchases of common stock (in shares) 3,627  
Repurchases of common stock $ (6,749)  
Surrendered (in shares) 488  
Shares exchanged for tax withholdings $ (939)  
Ending balance $ (108,794) $ (14,617)
Ending balance, treasury stock (in shares) 62,836 10,866
Additional Paid-in Capital    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance $ 8,293 $ 28
Share-based compensation, net of forfeitures (560) 1,477
Ending balance 7,733 1,505
Accum. Other Comp. Income (Loss)    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance 2,516 (1,007)
Periodic pension costs, net of income taxes (25) 8
Ending balance 2,491 (999)
Retained Earnings    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Beginning balance 866,139 668,029
Net income 86,568 97,900
Share-based compensation, net of forfeitures (103) (796)
Ending balance 927,543 741,909
Dividend Paid    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Dividends paid (25,061) (23,224)
Dividend Paid | Retained Earnings    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Dividends paid $ (25,061) $ (23,224)