Quarterly report pursuant to Section 13 or 15(d)

Changes in Equity - Changes in Equity (Details)

v3.22.1
Changes in Equity - Changes in Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Beginning balance $ 651,711 $ 485,184  
Net income 97,900 50,052  
Dividends paid (23,224) (21,329)  
Share-based compensation, net of forfeitures 1,481    
Conversion of Sub-shares into shares of common stock   0  
Periodic pension costs, net of income taxes 8 28  
Ending balance $ 727,876 $ 513,935  
Common stock, par value (in dollars per share) $ 0.01   $ 0.01
Dividend paid per common stock (in USD per share) $ 3.00 $ 2.75  
Other comprehensive income - periodic pension costs $ 2 $ 8  
Common Stock      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Beginning balance (in shares) 7,744,695 0  
Beginning balance $ 78 $ 0  
Share-based compensation, net of forfeitures (in shares) 595    
Conversion of sub-shares into shares of common stock (in shares)   7,756,156  
Conversion of Sub-shares into shares of common stock   $ 78  
Ending balance $ 78 $ 78  
Ending balance (in shares) 7,745,290 7,756,156  
Sub-share Certificates      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Beginning balance (in shares)   7,756,156  
Conversion of sub-shares into shares of common stock (in shares)   7,756,156  
Ending balance (in shares)   0  
Additional Paid-in Capital      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Beginning balance $ 28    
Share-based compensation, net of forfeitures 1,477    
Ending balance $ 1,505    
Treasury Stock      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Beginning balance (in shares) 11,461    
Beginning balance $ (15,417)    
Share-based compensation, net of forfeitures (in shares) 595    
Share-based compensation, net of forfeitures $ 800    
Ending balance $ (14,617)    
Ending balance (in shares) 10,866    
Accum. Other Comp. Inc/(Loss)      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Beginning balance $ (1,007) $ (2,693)  
Periodic pension costs, net of income taxes 8 28  
Ending balance (999) (2,665)  
Retained Earnings      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Beginning balance 668,029 0  
Net income 97,900 50,052  
Dividends paid (23,224) (21,329)  
Share-based compensation, net of forfeitures 796    
Conversion of Sub-shares into shares of common stock   487,799  
Ending balance $ 741,909 516,522  
Net Proceeds From All Sources      
Increase (Decrease) in Stockholders' Equity [Roll Forward]      
Beginning balance   487,877  
Conversion of Sub-shares into shares of common stock   487,877  
Ending balance   $ 0