v3.22.1
Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Treasury Stock
Retained Earnings
Beginning balance (in shares) at Dec. 31, 2020   27,025,000   (6,468,000)  
Beginning balance at Dec. 31, 2020 $ 837,729 $ 270 $ 67,885 $ (111,718) $ 881,292
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 41,189       41,189
Exercise of stock options (in shares)   3,000      
Exercise of stock options 155   155    
Stock-based compensation (in shares)   13,000      
Stock-based compensation 737   737    
Dividends declared $ (413)       (413)
Purchase of treasury stock (in shares) 0        
Ending balance (in shares) at Mar. 31, 2021   27,041,000   (6,468,000)  
Ending balance at Mar. 31, 2021 $ 879,397 $ 270 68,777 $ (111,718) 922,068
Beginning balance (in shares) at Dec. 31, 2021   27,083,000   (6,944,000)  
Beginning balance at Dec. 31, 2021 1,339,089 $ 271 72,753 $ (155,014) 1,421,079
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 161,531       161,531
Exercise of stock options (in shares)   3,000      
Exercise of stock options 155   155    
Stock-based compensation (in shares)   42,000      
Stock-based compensation 1,939   1,939    
Dividends declared $ (394)       (394)
Purchase of treasury stock (in shares) (500,917)     (501,000)  
Purchase of treasury stock $ (58,383)     $ (58,383)  
Ending balance (in shares) at Mar. 31, 2022   27,128,000   (7,445,000)  
Ending balance at Mar. 31, 2022 $ 1,443,937 $ 271 $ 74,847 $ (213,397) $ 1,582,216