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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Cash flows from operating activities:    
Net loss $ (12,271,269) $ (17,187,281)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation 2,540,593 2,490,551
Depreciation and amortization 286,448 288,589
Amortization of marketable securities discount 141,159 23,422
Gain on extinguishment of debt (1,422,214)
Gain on legal fee obligation settled with stock (9,525) 156,434
Net noncash lease expense 56,151 273,070
Inventory reserve charge 39,478
Other 14,893
Changes in operating assets and liabilities:    
Accounts receivable, net (59,232) 320,186
Inventories 270,805 (15,922)
Prepaid expenses and other current assets 703,257 561,248
Accounts payable 171,835 (1,631,839)
Accrued expenses and other current liabilities 324,316 (1,407,813)
Right of use operating leases (78,622)
Operating lease liabilities 33,277 (355,274)
Net cash used in operating activities (9,273,543) (16,469,736)
Cash flows from investing activities:    
Purchase of marketable securities (5,082,730) (22,166,376)
Proceeds from maturities of marketable securities 22,300,000 10,500,000
Net cash provided by (used in) investing activities 17,217,270 (11,666,376)
Cash flows from financing activities:    
Shares issued net of related expenses 25,685,232 17,139,563
Proceeds from note issued 1,410,524
Net cash provided by financing activities 25,685,232 18,550,087
Effect of changes in exchange rates on cash and cash equivalents 124,112 (145,312)
Net increase in cash and cash equivalents 33,753,071 (9,731,337)
Cash and cash equivalents – beginning of period 4,241,937 13,563,791
Cash and cash equivalents – end of period 37,995,008 3,832,454
Supplemental cash flows disclosures:    
Proceeds from sale of state net operating losses 1,425,935 1,170,890
Interest paid 4,649 9,366
Income taxes paid 38,622 3,254
Supplemental schedule of noncash activity:    
2020 Accrued bonus awarded in equity 399,997
Accounts payable paid through issuance of common stock $ 1,000,000 $ 1,548,702