Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 9 Months Ended
Nov. 30, 2022
Nov. 30, 2021
Cash Flows from Operating Activities    
Net loss $ (26,724,178) $ (30,648,023)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization (Notes 7 and 8) 410,544 407,806
Stock-based compensation expense (Note 17) 9,969,153 1,361,744
Gain on disposition of assets (Note 6) (6,703,558) 0
Accretion and accrued interest expenses (Note 20) 117,504 82,393
Changes in operating assets and liabilities:    
Sales tax and tax credits receivable (Note 3) 20,301 948,328
Inventory (Note 4) (426,278) 0
Prepaid expenses and deposits (Note 5) (1,294,520) (1,394,272)
Accounts payable and accrued liabilities (Note 10) (2,652,171) (3,587,932)
Customer deposits (Note 11) 1,000,000 0
Net cash used in operating activities (26,283,203) (32,829,956)
Cash Flows from Investing Activities    
Proceeds from disposition of assets (Note 6) 8,559,490 0
Additions to property, plant and equipment (Notes 6 and 7) (68,097) (5,022,255)
Additions to intangible assets (Note 8) (225,047) (348,017)
Net cash used in investing activities 8,266,346 (5,370,272)
Cash Flows from Financing Activities    
Proceeds from sale of common shares and warrants, net of share issuance costs (Note 14) 0 56,087,746
Proceeds from issuance of long-term debt (Note 12) 0 1,868,954
Repayment of long-term debt 0 (41,041)
Net cash (used) provided by financing activities 0 57,915,659
Effect of exchange rate changes (419,577) (77,336)
Net increase (decrease) in cash (18,436,434) 19,638,095
Cash and restricted cash, beginning of period 44,061,427 35,221,951
Cash and restricted cash, end of period 25,624,993 54,860,046
Supplemental Disclosure of Cash Flow Information:    
Income tax paid 0 0
Interest paid 0 30,506
Interest received $ 35,842 $ 23,654