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Consolidated Statements of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Preferred Stock
Common Stock
Additional Paid-In Capital
Retained Earnings
Treasury Stock
Balance, beginning of period (in shares) at Dec. 31, 2016   0 12,764     0
Balance, beginning of period at Dec. 31, 2016 $ 232,954 $ 0 $ 128 $ 100,812 $ 132,014 $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Exercise of common stock options, shares (in shares)     56      
Exercise of common stock options 1,120     1,120    
Compensation expense on common stock options 363     363    
Issuance of restricted stock, shares (in shares)     60      
Issuance of restricted stock 0          
Compensation expense on restricted common stock 3,675   $ 1 3,674    
Taxes paid related to net shares settlement of equity awards (644)     (644)    
Net (loss) income 19,794       19,794  
Balance, end of period (in shares) at Dec. 31, 2017   0 12,880     0
Balance, end of period at Dec. 31, 2017 257,262 $ 0 $ 129 105,325 151,808 $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Exercise of common stock options, shares (in shares)     38      
Exercise of common stock options 680     680    
Compensation expense on common stock options 159     159    
Issuance of restricted stock, shares (in shares)     87      
Issuance of restricted stock 0          
Compensation expense on restricted common stock 2,226   $ 1 2,225    
Taxes paid related to net shares settlement of equity awards (629)     (629)    
Net (loss) income (466)       (466)  
Balance, end of period (in shares) at Dec. 31, 2018   0 13,005     0
Balance, end of period at Dec. 31, 2018 259,232 $ 0 $ 130 107,760 151,342 $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Exercise of common stock options, shares (in shares)     56      
Exercise of common stock options 506   $ 1 505    
Compensation expense on common stock options 124     124    
Issuance of restricted stock, shares (in shares)     117      
Issuance of restricted stock 0          
Compensation expense on restricted common stock 2,458   $ 1 2,457    
Taxes paid related to net shares settlement of equity awards (273)     (273)    
Purchase of treasury shares (in shares)           38
Purchase of treasury shares (490)         $ (490)
Net (loss) income (13,864)       (13,864)  
Balance, end of period (in shares) at Dec. 31, 2019   0 13,178     38
Balance, end of period at Dec. 31, 2019 $ 247,693 $ 0 $ 132 $ 110,573 $ 137,478 $ (490)