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Note 1 - Organization (Details Textual) - USD ($) | Nov. 12, 2021 | Nov. 09, 2021 | Oct. 31, 2021 | Jan. 31, 2021
--- | --- | --- | --- | ---
Working Capital (Deficit) |  |  | $ 14,200,000 |
Cash, Ending Balance |  |  | 622,000 |
Unbilled Contracts Receivable |  |  | $ 10,000,000.0 |
Preferred Stock, Par or Stated Value Per Share (in dollars per share) |  |  | $ 1.00 | $ 1.00
Subsequent Event [Member] | Underwriting Agreement [Member] |  |  |  |
Preferred Stock, Dividend Rate, Percentage | 9.00% |  |  |
Preferred Stock, Par or Stated Value Per Share (in dollars per share) |  | $ 1.00 |  |
Payments of Stock Issuance Costs |  | $ 12 |  |
Subsequent Event [Member] | Underwriting Agreement [Member] | Preferred Stock [Member] |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 432,000 |  |  |

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