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STOCK-BASED COMPENSATION (Tables)
6 Months Ended
Jun. 30, 2021
STOCK-BASED COMPENSATION [Abstract]  
Weighted-Average Assumptions Used for Grants Issued

The following weighted-average assumptions were used for grants issued during the three and six months ended June 30, 2021:
 
 
Three and six months ended
June 30, 2021
 
Weighted average risk-free rate
1.06%

Weighted average volatility
134.30%

Dividend yield
0%

Expected term
6.08 years