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SHAREHOLDERS' EQUITY (Details) - USD ($)
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 07, 2016
Jan. 14, 2016
May. 07, 2014
Jan. 11, 2010
Calculation of weighted average common shares            
Weighted average common shares, basic 11,931,000 11,304,000        
Effect of dilutive securities            
Effect of stock options (in shares) 840,000 693,000        
Effect of dilutive share awards (in shares) 102,000 168,000        
Weighted average common shares, diluted 12,873,000 12,165,000        
Anti-dilutive securities excluded from calculation of diluted earnings per share (in shares) 0          
Common stock repurchases            
Value of common stock authorized to be repurchased     $ 40,000,000 $ 50,000,000 $ 10,000,000 $ 10,000,000
Purchase of treasury stock (in shares) 580,014 5,250        
Remaining authorized repurchase amount $ 56,700,000