SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Fair Value Hierarchy of Financial Liabilities Measured at Fair Value (Details) - Fair Value, Recurring - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	$ 408,000	$ 370,000
Warrant liabilities	2,637,500	0
Total liabilities at fair value	3,045,500	370,000
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0	0
Warrant liabilities	0	0
Total liabilities at fair value	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0	0
Warrant liabilities	0	0
Total liabilities at fair value	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	408,000	370,000
Warrant liabilities	2,637,500	0
Total liabilities at fair value	$ 3,045,500	$ 370,000