Annual report pursuant to Section 13 and 15(d)

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)

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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 7,662,491 8,364,412 8,508,177
Employee Stock Option [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 5,841,805 5,429,727 4,771,560
Warrants [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1,820,686 2,934,685 3,736,617