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Note 2 - Operations and Management Plans (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jul. 31, 2021 | Nov. 30, 2021 | Nov. 30, 2020 | Aug. 31, 2021 | Jul. 06, 2021 | Jan. 19, 2021
Retained Earnings (Accumulated Deficit), Ending Balance |  | $ (53,498) | $ (50,215) |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax, Total |  | 42,160 | 16,566 |  |  |
Net Income (Loss) Available to Common Stockholders, Basic, Total |  | (4,326) | (12,553) |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 2,875,000 |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) | $ 21.00 |  |  |  |  |
Stock Offering, Underwriting Discounts, Commissions, and Offering Expenses | $ 4,400 |  |  |  |  |
Proceeds from Issuance of Common Stock, Net | $ 56,000 | $ 55,952 | $ 0 |  |  |
Over-Allotment Option [Member] |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 375,000 |  |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | $ 7,500 | $ 5,000
Equipment Financing Line of Credit [Member] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 1,500 |  | $ 1,500

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