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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Mar. 31, 2019
Sep. 30, 2018
Mar. 31, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Cash Flows from Operating Activities:              
Net loss $ (2,985,825) $ (3,205,174) $ (4,665,580) $ (2,588,232) $ (6,578,729) $ (10,216,702) $ 15,500,000
Adjustments to reconcile net loss to net cash flows used in operating activities:              
Depreciation and amortization         287,184 395,819  
Gain on disposal of equipment         (28,218)  
Change in fair value of warrant derivative liabilities   9,799   319,105  
Loss on extinguishment of secured convertible debentures         600,000  
Secured convertible notes issuance expense 89,148     89,148 220,312  
Change in fair value of secured convertible notes         408,860 2,296,444  
Change in fair value of proceeds investment agreement 177,000   98,487   3,275,000 98,487  
Interest on secured convertible notes paid through issuance of common stock         50,000  
Interest expense added to convertible debenture         995,368  
Amortization of discount on subordinated note payable         47,657  
Operating lease right of use asset         333,308  
Stock-based compensation 405,579   669,480   1,715,972 1,757,227  
Provision for inventory obsolescence         47,637 (300,729)  
Provision for doubtful accounts receivable         53,224  
(Increase) decrease in:              
Accounts receivable - trade         32,493 (27,180)  
Accounts receivable - other         (86,217) (40,336)  
Inventories         569,710 1,680,765  
Prepaid expenses         (47,620) (208,099)  
Other assets         (147,504) (129,009)  
Increase (decrease) in:              
Accounts payable         1,290,614 (1,691,458)  
Accrued expenses         (1,003,185) (68,294)  
Lease obligation with right of use asset         (252,148)  
Income taxes payable         2,144 (6,437)  
Contract liabilities         (210,849) 227,786  
Net cash used in operating activities         (170,958) (4,077,492)  
Cash Flows from Investing Activities:              
Purchases of furniture, fixtures and equipment         (78,584) (34,448)  
Proceeds from the sale of equipment         76,268  
Additions to intangible assets         (51,182) (72,721)  
Release of cash in accordance with secured convertible note         500,000  
Net cash provided by (used) in investing activities         (129,766) 469,099  
Cash Flows from Financing Activities:              
Proceeds from subordinated notes payable         250,000  
Proceeds from sale of common stock in underwritten public offering         7,324,900 7,324,900
Proceeds from proceeds investment agreement and detachable common stock purchase warrants         10,000,000  
Proceeds from exercise of common stock purchase warrants         1,564,000  
Proceeds from secured convertible notes and detachable common stock purchase warrants         2,500,000 6,250,000  
Principal payment on secured convertible debentures         (10,834,169)  
Principal payment on subordinated notes payable         (1,108,500)  
Payment on proceeds investment agreement         (6,000,000)  
Proceeds from issuance of common stock and warrants         89,304  
Loss on extinguishment of secured convertible debentures         (600,000)  
Secured convertible notes issuance expense         (89,148) (220,312)  
Principal payments on capital lease obligation         (8,492)  
Net cash provided by (used in) financing activities         (2,025,148) 11,142,731  
Net increase (decrease) in cash and cash equivalents         (2,325,872) 7,534,338  
Cash and cash equivalents, beginning of period   $ 3,598,807   $ 54,712 3,598,807 54,712 54,712
Cash and cash equivalents, end of period $ 1,272,935   $ 7,589,050   1,272,935 7,589,050 $ 3,598,807
Supplemental disclosures of cash flow information:              
Cash payments for interest         1,367,561  
Cash payments for income taxes         3,856 6,437  
Supplemental disclosures of non-cash investing and financing activities:              
Restricted common stock grant         522 485  
Restricted common stock forfeitures         5 34  
Obtaining right of use asset for lease liability         500,751  
Amounts allocated to common stock purchase warrants in connection with proceeds from secured convertible notes         535,739 1,684,251  
Issuance of common stock upon conversion of secured convertible notes and interest         698,067 293,688  
Issuance of common stock related to the issuance of secured convertible notes         118,749  
Amounts allocated to common stock purchase warrants in connection with proceeds investment agreement         932,487  
Issuance of common stock upon conversion of secured convertible notes payable and accrued interest         153,200  
Issuance of common stock upon exercise of common stock purchase warrants accounted for as warrant liabilities         335,921  
Amounts allocated to common stock purchase warrants in connection with proceeds from subordinated notes payable         $ 47,657