Quarterly report pursuant to Section 13 or 15(d)

Changes in Equity - Changes in Equity (Details)

v3.22.2
Changes in Equity - Changes in Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
May 03, 2022
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning balance   $ 727,876 $ 651,711 $ 513,935 $ 485,184 $ 651,711 $ 485,184
Beginning balance, treasury stock (in shares)     11,461     11,461  
Net income   118,894 $ 97,900 57,046 50,052 $ 216,794 107,098
Share-based compensation, net of forfeitures   1,811 1,481        
Conversion of Sub-shares into shares of common stock         0    
Periodic pension costs, net of income taxes   8 8 29 28 16 57
Repurchases of common stock   (25,534)   (2,504)      
Ending balance   $ 645,281 $ 727,876 $ 547,177 $ 513,935 $ 645,281 $ 547,177
Ending balance, treasury stock (in shares)   28,240       28,240  
Dividend paid per common stock (in USD per share)   $ 23.00 $ 3.00 $ 2.75 $ 2.75 $ 26.00 $ 5.50
Other comprehensive income - periodic pension costs   $ 2 $ 2 $ 8 $ 8 $ 4 $ 15
Common Stock              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning balance (in shares)   7,745,290 7,744,695 7,756,156 0 7,744,695 0
Beginning balance   $ 78 $ 78 $ 78 $ 0 $ 78 $ 0
Share-based compensation, net of forfeitures (in shares)   104 595        
Conversion of sub-shares into shares of common stock (in shares)         7,756,156    
Conversion of Sub-shares into shares of common stock         $ 78    
Repurchases of common stock (in shares)   (17,478)   (1,633)      
Ending balance (in shares)   7,727,916 7,745,290 7,754,523 7,756,156 7,727,916 7,754,523
Ending balance   $ 78 $ 78 $ 78 $ 78 $ 78 $ 78
Sub-share Certificates              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning balance (in shares)       0 7,756,156   7,756,156
Conversion of sub-shares into shares of common stock (in shares)         7,756,156    
Ending balance (in shares)       0 0   0
Treasury Stock              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning balance   $ (14,617) $ (15,417) $ 0 $ 0 $ (15,417) $ 0
Beginning balance, treasury stock (in shares)   10,866 11,461 0 0 11,461 0
Share-based compensation, net of forfeitures (in shares)   (104) (595)        
Share-based compensation, net of forfeitures   $ 140 $ 800        
Repurchases of common stock (in shares)   17,478   1,633      
Repurchases of common stock   $ (25,534)   $ (2,504)      
Ending balance   $ (40,011) $ (14,617) $ (2,504) $ 0 $ (40,011) $ (2,504)
Ending balance, treasury stock (in shares)   28,240 10,866 1,633 0 28,240 1,633
Additional Paid-in Capital              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning balance   $ 1,505 $ 28     $ 28  
Share-based compensation, net of forfeitures   1,851 1,477        
Ending balance   3,356 1,505     3,356  
Accum. Other Comp. Inc/(Loss)              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning balance   (999) (1,007) $ (2,665) $ (2,693) (1,007) $ (2,693)
Periodic pension costs, net of income taxes   8 8 29 28    
Ending balance   (991) (999) (2,636) (2,665) (991) (2,636)
Retained Earnings              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning balance   741,909 668,029 516,522 0 668,029 0
Net income   118,894 97,900 57,046 50,052    
Share-based compensation, net of forfeitures   (180) (796)        
Conversion of Sub-shares into shares of common stock         487,799    
Ending balance   682,849 741,909 552,239 516,522 $ 682,849 552,239
Net Proceeds From All Sources              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Beginning balance       0 487,877   487,877
Conversion of Sub-shares into shares of common stock         (487,877)    
Ending balance       0 0   $ 0
Dividend Paid              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Dividends paid   $ (23,188) (23,224) $ (21,329) (21,329)    
Dividend paid per common stock (in USD per share)   $ 3.00   $ 2.75      
Dividend Paid | Retained Earnings              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Dividends paid   $ (23,188) $ (23,224) $ (21,329) $ (21,329)    
Special Dividend Paid              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Dividends paid   (154,586)          
Dividend paid per common stock (in USD per share) $ 20.00            
Special Dividend Paid | Retained Earnings              
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Dividends paid   $ (154,586)