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Consolidated Statement of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Treasury Stock
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2015   14,518        
Beginning balance at Dec. 31, 2015 $ 21,387 $ 150 $ 0 $ 7,759 $ 17,386 $ (3,908)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Stock-based compensation expense 933     933    
Repurchase and retirement of common stock, net (in shares)   (1,056)        
Repurchase and retirement of common stock (9,505) $ (15)   (7,189) (2,301)  
Tax benefit shortfall from forfeiture/cancellation of stock options (1,503)     (1,503)    
Foreign currency translation adjustment 121         121
Net income 6,631       6,631  
Ending balance shares (in shares) at Dec. 31, 2016   13,462        
Ending balance at Dec. 31, 2016 18,064 $ 135 0 0 21,716 (3,787)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Stock-based compensation expense 1,006     1,006    
Repurchase and retirement of common stock, net (in shares)   (1,000)        
Repurchase and retirement of common stock (9,712) $ (10)   (1,006) (8,696)  
Foreign currency translation adjustment 190         190
Net income $ 3,530       3,530  
Ending balance shares (in shares) at Dec. 31, 2017 12,462 12,462        
Ending balance at Dec. 31, 2017 $ 13,078 $ 125 0 0 16,550 (3,597)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Stock-based compensation expense 915     915    
Repurchase and retirement of common stock, net (in shares)   (500)        
Repurchase and retirement of common stock (5,292) $ (5)   (915) (4,372)  
Foreign currency translation adjustment (617)         (617)
Net income $ 4,661       4,661  
Ending balance shares (in shares) at Dec. 31, 2018 11,962 11,962        
Ending balance at Dec. 31, 2018 $ 14,059 $ 120 $ 0 $ 0 $ 18,153 $ (4,214)