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PREPAID EXPENSES AND OTHER CURRENT ASSETS - Narrative (Details) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
Jul. 31, 2019
Short-term Debt [Line Items]      
Note payable $ 252,679 $ 502,332  
Note Payable      
Short-term Debt [Line Items]      
Principal amount     $ 900,000
Interest rate     4.61%