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Note 19 - Subsequent Events (Details Textual) - USD ($)		1 Months Ended	3 Months Ended	12 Months Ended
	Jan. 10, 2025	Jan. 31, 2025	Mar. 27, 2025	Dec. 31, 2024	Dec. 31, 2023	Jan. 11, 2025	Dec. 31, 2022
Class of Warrant or Right, Outstanding (in shares)				53,562	105,556		105,556
Proceeds from Long-Term Lines of Credit				$ 13,500,000	$ 0
Warrants for Common Class B Stock [Member]
Class of Warrant or Right, Outstanding (in shares)				52,778
Subsequent Event [Member] | First National Bank of Omaha [Member] | Credit Facility [Member] | Boston Omaha Broadband Credit Facility [Member]
Proceeds from Long-Term Lines of Credit		$ 3,500,000
Subsequent Event [Member] | Warrants for Common Class B Stock [Member]
Proceeds from Warrant Exercises	$ 52,778
Class of Warrant or Right, Outstanding (in shares)	525,000					0
Sky Harbour Group Corporation [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues (in shares)			190,692
Proceeds from Issuance or Sale of Equity			$ 2,159,732
USC Subsidiary [Member] | Subsequent Event [Member] | Sky Harbour Group Corporation Class A Common Stock [Member]
Shares Transferred (in shares)		1,162,000
Investment Owned, Balance, Shares (in shares)		2,673,831

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