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v3.23.1

Note 1 - Description of Business and Significant Accounting Policies (Details Textual) | 12 Months Ended
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Dec. 31, 2022 USD ($) a $ / shares shares | Dec. 31, 2021 USD ($) shares
Capital Units, Authorized | 48,000,000 |
Common Stock, Shares Authorized | 43,000,000 | 43,000,000
Common Stock, Par or Stated Value Per Share | $ / shares | $ 0.0001 |
Preferred Stock, Shares Authorized | 5,000,000 |
Preferred Stock, Par or Stated Value Per Share | $ / shares | $ 0.0001 |
Asset Impairment Charges, Total | $ | $ 0 | $ 40,000
Impairment of Deferred Development Costs | $ | $ 0 | $ 0
Weighted Average Number of Shares Outstanding, Basic, Total | 19,400,000 | 19,400,000
Subsidized Stewardship and Conservation Efforts [Member] |  |
Government Assistance, Amount | $ | $ 400,000 | $ 700,000
Minimum [Member] |  |
Property, Plant and Equipment, Useful Life | 3 years |
Maximum [Member] |  |
Property, Plant and Equipment, Useful Life | 40 years |
HAWAII |  |
Area of Land | a | 22,000 |

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