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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income
Retained Earnings
Treasury Stock
Balance (in shares) at Dec. 31, 2021   11,594        
Balance at Dec. 31, 2021 $ 202,474 $ 12 $ 12,018 $ 111 $ 190,333 $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 41,781       41,781  
Share-based compensation (in shares)   18        
Share-based compensation 2,275   2,275      
Net shares repurchased for employee taxes (in shares)   (8)        
Net shares repurchased for employee taxes (1,459)   (1,459)      
Treasury stock from stock repurchases (10,000)         (10,000)
Treasury stock retired from stock repurchases (in shares)   (51)        
Treasury stock retired from stock repurchases 0       (10,000) 10,000
Other comprehensive income 16     16    
Cash dividends declared to stockholders (19,063)       (19,063)  
Balance (in shares) at Mar. 31, 2022   11,553        
Balance at Mar. 31, 2022 216,024 $ 12 12,834 127 203,051 0
Balance (in shares) at Dec. 31, 2021   11,594        
Balance at Dec. 31, 2021 202,474 $ 12 12,018 111 190,333 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income $ 80,894          
Options exercised by directors (in shares) 0          
Other comprehensive income $ 156          
Balance (in shares) at Jun. 30, 2022   11,019        
Balance at Jun. 30, 2022 129,476 $ 11 0 268 129,197 0
Balance (in shares) at Mar. 31, 2022   11,553        
Balance at Mar. 31, 2022 216,024 $ 12 12,834 127 203,051 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 39,113       39,113  
Share-based compensation (in shares)   1        
Share-based compensation 2,865   2,865      
Net shares repurchased for employee taxes (in shares)   0        
Net shares repurchased for employee taxes (20)   (20)      
Treasury stock from stock repurchases (90,038)         (90,038)
Treasury stock retired from stock repurchases (in shares)   (535)        
Treasury stock retired from stock repurchases (1) $ (1)     (90,038) 90,038
Stock Repurchases, not yet settled (20,010)   (15,679)   (4,331)  
Other comprehensive income 141     141    
Cash dividends declared to stockholders (18,598)       (18,598)  
Balance (in shares) at Jun. 30, 2022   11,019        
Balance at Jun. 30, 2022 $ 129,476 $ 11 0 268 129,197 0
Balance (in shares) at Dec. 31, 2022 10,928 10,928        
Balance at Dec. 31, 2022 $ 155,044 $ 11 21,555 24 139,852 (6,398)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 39,968       39,968  
Share-based compensation (in shares)   69        
Share-based compensation 606   606      
Options exercised by directors (in shares)   4        
Options exercised by directors 105   105      
Net shares repurchased for employee taxes (in shares)   (30)        
Net shares repurchased for employee taxes (3,236)   (3,236)      
Treasury stock from stock repurchases (3,602)         (3,602)
Treasury stock retired from stock repurchases (in shares)   (84)        
Treasury stock retired from stock repurchases 0       (10,000) 10,000
Other comprehensive income 9     9    
Cash dividends declared to stockholders (17,994)       (17,994)  
Balance (in shares) at Mar. 31, 2023   10,887        
Balance at Mar. 31, 2023 $ 170,900 $ 11 19,030 33 151,826 0
Balance (in shares) at Dec. 31, 2022 10,928 10,928        
Balance at Dec. 31, 2022 $ 155,044 $ 11 21,555 24 139,852 (6,398)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income $ 70,248          
Options exercised by directors (in shares) 4          
Other comprehensive income $ 99          
Balance (in shares) at Jun. 30, 2023 10,889 10,889        
Balance at Jun. 30, 2023 $ 185,561 $ 11 21,542 123 163,885 0
Balance (in shares) at Mar. 31, 2023   10,887        
Balance at Mar. 31, 2023 170,900 $ 11 19,030 33 151,826 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 30,280       30,280  
Share-based compensation (in shares)   2        
Share-based compensation 2,514   2,514      
Net shares repurchased for employee taxes (2)   (2)      
Other comprehensive income 90     90    
Cash dividends declared to stockholders $ (18,221)       (18,221)  
Balance (in shares) at Jun. 30, 2023 10,889 10,889        
Balance at Jun. 30, 2023 $ 185,561 $ 11 $ 21,542 $ 123 $ 163,885 $ 0