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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Cash Flows from Operating Activities:    
Net loss $ (9,910,508) $ (8,779,450)
Reconciliation of net loss to net cash used in operating activities:    
Depreciation and amortization 576,331 502,743
Stock-based compensation 1,630,677 1,377,038
Amortization of right-of-use assets 257,889 251,626
Changes in operating assets and liabilities:    
Prepaid expenses and deposits 288,409 95,000
Other receivables (1,948) (308)
Accounts payable and accrued expenses (3,953,976) (1,482,473)
Deferred revenue (964,322) 0
Lease liability (148,614) (64,329)
Net cash used in operating activities (12,226,062) (8,100,153)
Cash Flows from Investing Activities:    
Purchase of property and equipment (826,583) (442,277)
Cash used for construction in progress (1,625,605) (958,965)
Net cash used in investing activities (2,452,188) (1,401,242)
Cash Flows from Financing Activities:    
Proceeds from issuance of common stock, net 0 52,656,588
Net cash provided by financing activities 0 52,656,588
Net (decrease) increase in cash, cash equivlants and restricted cash (14,678,250) 43,155,193
Cash, cash equivalents and restricted cash at beginning of the period 43,497,331 21,352,382
Cash, cash equivalents and restricted cash at end of the period 28,819,081 64,507,575
Supplemental schedule of non-cash financing and investing activities:    
Offering cost not yet paid 0 103,830
Reclassifications between construction in progress and fixed assets 0 6,789,098
Capital expenditures included in accounts payable $ 2,328,499 $ 220,168