Annual report pursuant to Section 13 and 15(d)

COMMITMENTS AND CONTINGENCIES - Salary Reduction Program (Details)

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COMMITMENTS AND CONTINGENCIES - Salary Reduction Program (Details) - Salary Reduction Program - USD ($)
12 Months Ended
Aug. 20, 2020
Apr. 30, 2020
Dec. 31, 2020
Loss Contingencies [Line Items]      
Equity award as a percentage of the cash compensation that otherwise would have been payable, based on the market value of the common stock on the date of issuance 150.00% 150.00%  
Equity award as cash compensation that otherwise would have been payable, based on the market value of the common stock on the date of issuance     $ 374,000