Quarterly report pursuant to Section 13 or 15(d)

NATURE OF BUSINESS, ORGANIZATION AND GOING CONCERN - Additional Information (Details)

v3.19.3
NATURE OF BUSINESS, ORGANIZATION AND GOING CONCERN - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Retained Earnings (Accumulated Deficit) $ (108,301,352)   $ (108,301,352)   $ (97,588,343)  
Operating Income (Loss) $ (3,963,879) $ (3,087,492) $ (10,794,050) $ (9,445,938)    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options 49,425   49,425   49,425  
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents $ 13,301,612 $ 16,428,474 $ 13,301,612 $ 16,428,474 $ 13,310,616 $ 10,061,421
Cash, Uninsured Amount 12,800,000   12,800,000   12,800,000  
Lessee, Operating Lease, Liability, Payments, Due 679,000   679,000      
Impairment Charges     $ 0   0  
Leasehold Improvements [Member]            
Property, Plant and Equipment, Useful Life     64 months      
Maximum            
Property, Plant and Equipment, Useful Life     10 years      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period       3 years    
Lessee, Operating Lease, Liability, Payments, Due $ 100,000   $ 100,000      
Minimum            
Property, Plant and Equipment, Useful Life     3 years      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period     7 months      
Certificates of Deposit [Member]            
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents         $ 55,000