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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Feb. 28, 2025
Feb. 29, 2024
Cash Flows from Operating Activities    
Net loss $ (15,057) $ (21,087)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization (Notes 6 and 7) 524 535
Stock-based compensation (Note 19) 1,352 1,422
Write-down of inventory (Note 4) 0 817
Accrued interest and other financing costs (Note 22) 359 (159)
Impairment of equipment (Note 6) 8,460 0
Loss on equity accounted investment (Note 11) 687 0
Customer deposits 0 (12)
Changes in operating assets and liabilities:    
Sales tax and tax credits receivable (Note 3) (322) 731
Inventories (Note 4) 14 (187)
Prepaid expenses (Note 5) 410 87
Accounts payable and accrued liabilities (Note 9) 1,350 (193)
Unearned revenue (Note 16) 102 0
Net cash (used in) operating activities (2,121) (18,046)
Cash Flows from Investing Activities    
Investment in joint venture (Note 11) (1,954) 0
Distribution from equity investment (Note 11) 368 0
Additions to property, plant and equipment (Note 6) 0 (5,162)
Additions to intangible assets (Note 7) (450) (482)
Net cash (used in) investing activities (2,036) (5,644)
Cash Flows from Financing Activities    
Proceeds from issuance of series B Convertible Preferred stock (Note 12) 10,395 0
Repayment of long-term debt (Note 13) (77) (63)
Net cash provided by (used in) financing activities 10,318 (63)
Effect of exchange rate changes (146) 120
Net change in cash and cash equivalents 6,015 (23,633)
Cash and cash equivalents, beginning of year 6,958 30,591
Cash and cash equivalents, end of year 12,973 6,958
Supplemental Disclosure of Cash Flow Information:    
Income tax paid 0 0
Interest paid 257 118
Interest received $ 307 $ 488