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Condensed Consolidated Statements of Cash Flows - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Operating activities    
Net loss $ (5,111,726) $ (4,158,891)
Adjustment to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 490,563 422,185
Share-based compensation 211,328 129,715
Other non-cash charge 4,251 4,203
Changes in operating assets and liabilities:    
Inventory (411,794) (577,154)
Prepaid expenses and other assets (139,671) (63,966)
Accounts payable and accrued liabilities (6,949) (211,347)
Accrued employee compensation (362,416) (63,139)
Net cash used in operating activities (5,326,414) (4,518,394)
Investing activities    
Purchase of property, plant and equipment (5,762,143) (1,208,183)
Purchases of marketable securities, net (1,705,440)  
Other investing activities   (11,010)
Net cash used in investing activities (7,467,583) (1,219,193)
Financing activities    
Proceeds from issuance of debt   187,120
Repayment of term debt (159,304) (38,885)
Proceeds from the issuance of common stock, net   119,120,437
Proceeds from the exercise of stock options and warrants   1,596,182
Net cash provided by financing activities (159,304) 120,864,854
Effect of exchange rate changes on cash, cash equivalents and restricted cash 8,106 21,007
Net change in cash, cash equivalents and restricted cash (12,945,195) 115,148,274
Cash, cash equivalents and restricted cash at beginning of period 89,454,988 96,251,160
Cash, cash equivalents and restricted cash at end of period 76,509,793 211,399,434
Reconciliation of cash, cash equivalents and restricted cash reported in the consolidated balance sheet:    
Cash and cash equivalents 75,509,793 210,899,434
Restricted cash 1,000,000 500,000
Supplemental disclosure of cash flow information and non-cash transactions:    
Interest paid in cash 71,037 73,685
Property and equipment included in accounts payable and accrued liabilities $ 1,507,514 $ 82,068