v3.22.2.2
Condensed Consolidated Statement of Shareholders' Equity - USD ($)
$ in Thousands
Total
Common Shares [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Treasury Shares [Member]
Shares Outstanding, Beginning Balance at Dec. 31, 2020   28,813,849      
Stockholders' Equity, Beginning Balance at Dec. 31, 2020 $ 1,258,698 $ 301 $ 339,001 $ 948,453 $ (29,057)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 283,485     283,485  
Stock options exercised, shares   452,100      
Stock options exercised 11,241   1,227   10,014
Stock-based compensation expense 6,199   6,199    
Repurchase of common shares, shares   (242,500)      
Repurchase of common shares (15,494)       (15,494)
Deferral of executive and director compensation 338   338    
Deferred Compensation Arrangement with Individual, Shares Issued   76,181      
Deferred Compensation Arrangement with Individual, Distribution Paid 0   (1,673)   1,673
Shares Outstanding, Ending Balance at Sep. 30, 2021   29,099,630      
Stockholders' Equity, Ending Balance at Sep. 30, 2021 1,544,467 $ 301 345,092 1,231,938 (32,864)
Shares Outstanding, Beginning Balance at Jun. 30, 2021   29,318,130      
Stockholders' Equity, Beginning Balance at Jun. 30, 2021 1,466,544 $ 301 343,301 1,140,926 (17,984)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 91,012     91,012  
Stock options exercised, shares   24,000      
Stock options exercised 611   (3)   614
Stock-based compensation expense 1,794   1,794    
Repurchase of common shares, shares   (242,500)      
Repurchase of common shares (15,494)       (15,494)
Shares Outstanding, Ending Balance at Sep. 30, 2021   29,099,630      
Stockholders' Equity, Ending Balance at Sep. 30, 2021 1,544,467 $ 301 345,092 1,231,938 (32,864)
Shares Outstanding, Beginning Balance at Dec. 31, 2021   28,499,630      
Stockholders' Equity, Beginning Balance at Dec. 31, 2021 1,624,184 $ 301 347,452 1,345,321 (68,890)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 360,267     360,267  
Stock options exercised, shares   38,800      
Stock options exercised 1,002   (687)   1,689
Stock-based compensation expense 6,613   6,613    
Repurchase of common shares, shares   (1,200,000)      
Repurchase of common shares (55,334)       (55,334)
Deferral of executive and director compensation 1,041   1,041    
Deferred Compensation Arrangement with Individual, Shares Issued   90,553      
Deferred Compensation Arrangement with Individual, Distribution Paid 0   (3,850)   3,850
Shares Outstanding, Ending Balance at Sep. 30, 2022   27,428,983      
Stockholders' Equity, Ending Balance at Sep. 30, 2022 1,937,773 $ 301 350,569 1,705,588 (118,685)
Shares Outstanding, Beginning Balance at Jun. 30, 2022   27,760,583      
Stockholders' Equity, Beginning Balance at Jun. 30, 2022 1,818,267 $ 301 347,923 1,573,998 (103,955)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 131,590     131,590  
Stock options exercised, shares   8,400      
Stock options exercised 232   (137)   369
Stock-based compensation expense $ 2,764   2,764    
Repurchase of common shares, shares 300,000 (340,000)      
Repurchase of common shares $ (15,099)       (15,099)
Deferral of executive and director compensation 19   19    
Shares Outstanding, Ending Balance at Sep. 30, 2022   27,428,983      
Stockholders' Equity, Ending Balance at Sep. 30, 2022 $ 1,937,773 $ 301 $ 350,569 $ 1,705,588 $ (118,685)