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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Cash flows from operating activities:      
Net loss $ (5,689,003) $ (5,056,878)  
Adjustments to reconcile net loss to net cash used in operating activities:      
Depreciation and amortization 190,595 188,329  
Change in fair value of earn-out milestone liability 151,000 41,274  
Fair value of warrants issued in connection with amendment to modify the GEN-1 earn-out milestone payments  
Recognition of deferred revenue (125,000) (125,000)  
Stock-based compensation costs 1,579,326 451,965  
Deferred income tax asset 1,845,823 1,819,324  
Amortization of deferred finance charges and debt discount associated with notes payable 37,301 96,066  
Net changes in:      
Accrued interest on investment securities (1,344)  
Receivable on sale of net operating losses (1,845,823) (1,819,324)  
Advances, deposits, and other current assets 17,500 (64,527)  
Accounts payable and accrued liabilities (898,581) (504,952)  
Net cash (used in) operating activities: (4,736,862) (4,975,067)  
Cash flows from investing activities:      
Purchases of investment securities (14,998,260) (9,940,534)  
Proceeds from sale and maturity of investment securities 8,000,000  
Purchases of property and equipment (126,597) (8,235)  
Net cash used in investing activities (15,124,857) (1,948,769)  
Cash flows from financing activities:      
Proceeds from sale of common stock equity, net of issuance costs 38,943,478 5,794,747  
Proceeds from exercise of common stock warrants 1,508,666  
Proceeds from exercise of options to purchase common stock 4,725  
Net cash provided by financing activities 40,456,869 5,794,747  
Increase (decrease) in cash and cash equivalents 20,595,150 (1,129,089)  
Cash and cash equivalents at beginning of period 17,164,177 6,875,273 $ 6,875,273
Cash and cash equivalents at end of period 37,759,327 5,746,184 $ 17,164,177
Supplemental disclosures of cash flow information:      
Interest paid 120,313 243,299  
Cash paid for amounts included in measurement of lease liabilities:      
Operating cash flows from lease payments 130,595 130,631  
Stock issued in lieu of cash bonuses 498,632  
Realized and unrealized gains (losses), net, on investment securities $ 1,785 $ (38,965)