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Note 18 - Subsequent Events (Details Textual) - USD ($) |  | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Oct. 25, 2024 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 20, 2024 | Oct. 31, 2024 | Nov. 29, 2023
Stock Issued During Period, Value, New Issues |  | $ 9,421,202 | $ 28,105,461 |  |  |
Sky Harbour Group Corporation [Member] | Additional PIPE Offering [Member] |  |  |  |  |  |
Equity Offering, Maximum Shares (in shares) |  |  |  |  |  | 2,307,692
Equity Offering, Maximum Amount |  |  |  |  |  | $ 15,000,000
Sky Harbour Group Corporation [Member] | Additional PIPE Offering [Member] | Forecast [Member] |  |  |  |  |  |
Equity Offering, Maximum Shares (in shares) |  |  |  | 3,955,790 |  |
Equity Offering, Maximum Amount |  |  |  | $ 37,580,005 |  |
Subsequent Event [Member] | Sky Harbour Group Corporation [Member] | Additional PIPE Offering [Member] |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 3,955,790 |  |  |  |  |
Stock Issued During Period, Value, New Issues | $ 37,580,005 |  |  |  |  |
First National Bank of Omaha [Member] | Credit Facility [Member] | Subsequent Event [Member] |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 3,500,000 |

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