ACCRUED EXPENSES - Schedule of Accrued Expenses (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Payables And Accruals [Abstract]
Share redemption consideration	$ 706,258	$ 510,776
Commissions and royalties	722,023	398,096
Payroll and related	461,095	173,487
Interest	98,398	95,879
Income tax payable	46,629	42,218
Other	127,630	112,576
Total accrued expenses	$ 2,162,033	$ 1,333,032