Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES        
Effective tax rate   0.00%    
Current federal or state income tax expense   $ 0    
Income tax expense   0    
Cash insured by Federal Deposit Insurance Corporation $ 17,100,000 $ 17,100,000    
Percentage of major vendor research and development expenditures 49.00% 1.00% 29.00%  
Percentage of major vendor accounts payable and accrued expenses       6.00%