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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid In Capital
Retained Earnings
Treasury Stock
Accumulated  Other Comprehensive Loss
BEGINNING BALANCE (in shares) at Dec. 31, 2020   33,141,879        
BEGINNING BALANCE at Dec. 31, 2020 $ 319,182 $ 331 $ 199,847 $ 269,420   $ (8,763)
BEGINING BALANCE, Treasury Stock (in shares) at Dec. 31, 2020         (3,518,607)  
BEGINING BALANCE, Treasury Stock at Dec. 31, 2020         $ (141,653)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 89,396     89,396    
Issuance of common stock awards to employees (in shares)   125,550        
Issuance of common stock awards to employees 0 $ 2 (2)      
Surrender of common stock awards (in shares)         (45,897)  
Surrender of common stock awards (5,575)       $ (5,575)  
Share-based compensation expense 8,351   8,351      
Share-based compensation issued to directors (in shares)   4,230        
Share-based compensation issued to directors 339   339      
Dividends declared $ (26,729)     (26,729)    
Common stock repurchase (in shares) 0          
Other comprehensive income (loss), net of tax $ 7,762         7,762
ENDING BALANCE (in shares) at Sep. 30, 2021   33,271,659        
ENDING BALANCE at Sep. 30, 2021 392,726 $ 333 208,535 332,087   (1,001)
ENDING BALANCE, Treasury Stock (in shares) at Sep. 30, 2021         (3,564,504)  
ENDING BALANCE, Treasury Stock at Sep. 30, 2021         $ (147,228)  
BEGINNING BALANCE (in shares) at Jun. 30, 2021   33,264,517        
BEGINNING BALANCE at Jun. 30, 2021 362,540 $ 333 205,597 306,107   (2,293)
BEGINING BALANCE, Treasury Stock (in shares) at Jun. 30, 2021         (3,562,942)  
BEGINING BALANCE, Treasury Stock at Jun. 30, 2021         $ (147,204)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 34,892     34,892    
Issuance of common stock awards to employees (in shares)   7,142        
Issuance of common stock awards to employees 0 $ 0        
Surrender of common stock awards (in shares)         (1,562)  
Surrender of common stock awards (24)       $ (24)  
Share-based compensation expense 2,812   2,812      
Share-based compensation issued to directors (in shares)          
Share-based compensation issued to directors 126   126      
Dividends declared (8,912)     (8,912)    
Other comprehensive income (loss), net of tax 1,292         1,292
ENDING BALANCE (in shares) at Sep. 30, 2021   33,271,659        
ENDING BALANCE at Sep. 30, 2021 $ 392,726 $ 333 208,535 332,087   (1,001)
ENDING BALANCE, Treasury Stock (in shares) at Sep. 30, 2021         (3,564,504)  
ENDING BALANCE, Treasury Stock at Sep. 30, 2021         $ (147,228)  
BEGINNING BALANCE (in shares) at Dec. 31, 2021 33,271,659 33,271,659        
BEGINNING BALANCE at Dec. 31, 2021 $ 416,840 $ 333 211,430 352,543   (227)
BEGINING BALANCE, Treasury Stock (in shares) at Dec. 31, 2021 (3,565,258)       (3,565,258)  
BEGINING BALANCE, Treasury Stock at Dec. 31, 2021 $ (147,239)       $ (147,239)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 154,704     154,704    
Issuance of common stock awards to employees (in shares)   112,389        
Issuance of common stock awards to employees 0 $ 1 (1)      
Surrender of common stock awards (in shares)         (53,599)  
Surrender of common stock awards (4,464)       $ (4,464)  
Share-based compensation expense 9,559   9,559      
Share-based compensation issued to directors (in shares)   6,305        
Share-based compensation issued to directors 389   389      
Issuance of awards previously classified as liability awards (in shares)   39,204        
Issuance of awards previously classified as liability awards 4,000   4,000      
Dividends declared $ (53,961)     (53,961)    
Common stock repurchase (in shares) (1,200,000)       (1,206,602)  
Common stock repurchase $ (112,193)       $ (112,193)  
Other comprehensive income (loss), net of tax $ 42,640         42,640
ENDING BALANCE (in shares) at Sep. 30, 2022 33,429,557 33,429,557        
ENDING BALANCE at Sep. 30, 2022 $ 457,514 $ 334 225,377 453,286   42,413
ENDING BALANCE, Treasury Stock (in shares) at Sep. 30, 2022 (4,825,459)       (4,825,459)  
ENDING BALANCE, Treasury Stock at Sep. 30, 2022 $ (263,896)       $ (263,896)  
BEGINNING BALANCE (in shares) at Jun. 30, 2022   33,428,587        
BEGINNING BALANCE at Jun. 30, 2022 400,601 $ 334 222,270 401,326   28,034
BEGINING BALANCE, Treasury Stock (in shares) at Jun. 30, 2022         (4,682,973)  
BEGINING BALANCE, Treasury Stock at Jun. 30, 2022         $ (251,363)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 60,978     60,978    
Surrender of common stock awards (in shares)         (554)  
Surrender of common stock awards (5)       $ (5)  
Share-based compensation expense 2,967   2,967      
Share-based compensation issued to directors (in shares)   970        
Share-based compensation issued to directors 140   140      
Dividends declared $ (9,018)     (9,018)    
Common stock repurchase (in shares) (142,000)       (141,932)  
Common stock repurchase $ (12,528)       $ (12,528)  
Other comprehensive income (loss), net of tax $ 14,379         14,379
ENDING BALANCE (in shares) at Sep. 30, 2022 33,429,557 33,429,557        
ENDING BALANCE at Sep. 30, 2022 $ 457,514 $ 334 $ 225,377 $ 453,286   $ 42,413
ENDING BALANCE, Treasury Stock (in shares) at Sep. 30, 2022 (4,825,459)       (4,825,459)  
ENDING BALANCE, Treasury Stock at Sep. 30, 2022 $ (263,896)       $ (263,896)