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Consolidated Balance Sheets (Parenthetical) - $ / shares
Dec. 31, 2015
Dec. 31, 2014
Statement of Financial Position [Abstract]    
Series A convertible preferred stock, par value $ 0.001 $ 0.001
Series A convertible preferred stock, shares authorized 114,000 114,000
Series A convertible preferred stock, shares issued 0 0
Series A convertible preferred stock, shares outstanding 0 0
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 50,000,000 50,000,000
Common stock, shares issued 11,583,831 11,562,209
Common stock, shares outstanding 10,752,906 10,731,284
Treasury stock, at cost 830,925 830,925