Quarterly report pursuant to Section 13 or 15(d)

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details)

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ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Dec. 31, 2017
Payables and Accruals [Abstract]      
Accrued payroll and other benefits $ 2,533,294 $ 1,659,577  
Accrued interest 254,550 138,605  
D&O insurance financing payable 84,150 52,530  
Accrued professional fees 47,859 126,384  
Accrued rent and facilities costs 34,956 160,544  
Deferred revenue 9,207 20,631 $ 30,690
Other accrued expenses 2,002  
Accrued travel and entertainment 30,000  
TOTAL ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES $ 2,966,018 $ 2,188,271