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v3.22.2

Note 2 - Operations and Management Plans (Details Textual) - USD ($) |  | 1 Months Ended | 3 Months Ended | 4 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Apr. 28, 2022 | May 31, 2022 | Mar. 31, 2022 | Feb. 28, 2022 | Jul. 31, 2021 | May 31, 2022 | May 31, 2021 | May 31, 2022 | May 31, 2022 | May 31, 2021 | Feb. 15, 2022 | Nov. 30, 2021
Retained Earnings (Accumulated Deficit), Total |  | $ (59,715,000) |  |  |  | $ (59,715,000) |  | $ (59,715,000) | $ (59,715,000) |  |  | $ (53,498,000)
Revenue from Contract with Customer, Excluding Assessed Tax |  |  |  |  |  | 11,619,000 | $ 13,401,000 |  | 19,596,000 | $ 22,294,000 |  |
Net Income (Loss) Available to Common Stockholders, Basic, Total |  |  |  |  |  | (2,996,000) | $ 994,000 |  | (6,217,000) | $ 722,000 |  |
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 |  |  |  |  | $ 4,400,000 |  |  |  |  |  |  |
Proceeds from Issuance of Common Stock, Net |  |  |  |  | $ 56,000,000.0 |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  | 4,999,993 | $ 7,346,422 | $ 2,653,571 |  | $ 12,346,000 |  | $ 14,999,986 | $ 15,000,000 |  |  |
Stock Buyback Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  |  |  |  |  | $ 10,000,000 |
Stock Repurchase Program, Authorized Amount, Addition | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  | $ 5,000,000 | $ 10,000,000 |  |  |  |  |  |  |  |  |
Over-Allotment Option [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  |  |  |  | 375,000 |  |  |  |  |  |  |

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