Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' DEFICIT (Details 7)

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STOCKHOLDERS' DEFICIT (Details 7) - 2011 Stock Incentive Option Plan [Member] - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Class Of Warrant Or Right [Line Items]    
Number of Options outstanding, beginning 7,110,025 7,245,350
Number of Options, Granted or deemed granted   90,000
Number of Options, Cancelled, forfeited and expired (1,125,753) (225,325)
Number of Options outstanding, end 5,984,272 7,110,025
Number of Options, Options exercisable 5,915,180 6,986,268
Number of Options, Options available for future grant 0 2,302,475
Weighted-Average Exercise Price, Options outstanding, beginning $ 4.63 $ 4.68
Weighted-Average Exercise Price, Granted or deemed granted   2.05
Weighted-Average Exercise Price, Cancelled, forfeited and expired 3.82 5.08
Weighted-Average Exercise Price, Options outstanding, end 4.78 4.63
Weighted-Average Exercise Price, Options exercisable $ 4.05 $ 4.47