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Stockholders' Equity
3 Months Ended
Mar. 31, 2018
Equity [Abstract]  
Stockholders' Equity

(3) STOCKHOLDERS' EQUITY –

At March 31, 2018, the Company had warrants outstanding to purchase 155,040 shares of common stock at an exercise price of $0.01 per share.  Warrants for 260,047 and 152,742 shares of common stock were exercised during the three months ended March 31, 2018 and 2017, respectively.