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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Retained Earnings (Deficit)
Accumulated Other Comprehensive Income (Loss)
Treasury Stock
Balance beginning of period (in shares) at Dec. 31, 2018   55,135,788        
Balance at beginning of period at Dec. 31, 2018 $ 473,849 $ 744 $ 629,039 $ 150,244 $ (3,343) $ (302,835)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) for the year 89,575     89,575    
Foreign currency translation 712       712  
Stock-based compensation (in shares)   319,430        
Stock-based compensation 9,036 $ 5 9,031      
Stock repurchase (in shares)   (2,072,798)        
Stock repurchase (33,707)         (33,707)
Common stock dividends (17,978)     (17,978)    
Unrealized (loss) gain on derivative instruments (1,347)       (1,347)  
Stock option exercises (in shares)   91,200        
Stock option exercises 848 $ 1 847      
Balance end of period (in shares) at Dec. 31, 2019   53,473,620        
Balance at end of period at Dec. 31, 2019 520,988 $ 750 638,917 221,841 (3,978) (336,542)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) for the year (97,412)     (97,412)    
Foreign currency translation (316)       (316)  
Stock-based compensation (in shares)   212,009        
Stock-based compensation 4,510 $ 4 4,506      
Stock repurchase (in shares)   (1,262,459)        
Stock repurchase (18,895)         (18,895)
Common stock dividends (17,196)     (17,196)    
Unrealized (loss) gain on derivative instruments 11,927       11,927  
Stock option exercises (in shares)   113,312        
Stock option exercises 1,273 $ 1 1,272      
Balance end of period (in shares) at Dec. 31, 2020   52,536,482        
Balance at end of period at Dec. 31, 2020 404,879 $ 755 644,695 107,233 7,633 (355,437)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) for the year 1,164     1,164    
Foreign currency translation 193       193  
Stock-based compensation (in shares)   145,118        
Stock-based compensation 7,059 $ 2 7,057      
Stock repurchase (in shares)   (3,927,900)        
Stock repurchase (66,731)         (66,731)
Common stock dividends (16,286)     (16,286)    
Unrealized (loss) gain on derivative instruments $ (6,967)       (6,967)  
Stock option exercises (in shares) 200,782 200,782        
Stock option exercises $ 2,228 $ 2 2,226      
Balance end of period (in shares) at Dec. 31, 2021   48,954,482        
Balance at end of period at Dec. 31, 2021 $ 325,539 $ 759 $ 653,978 $ 92,111 $ 859 $ (422,168)