Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2022 USD ($) $ / shares shares	Jun. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2022 USD ($) $ / shares shares	Dec. 31, 2022 USD ($)
Operating Expenses	$ 5,974	$ 5,536	$ 11,765	$ 11,508
Earnings Per Share, Diluted (in dollars per share) | $ / shares	$ (0.03)	$ 0.17	$ (0.36)	$ (0.24)
Weighted Average Number of Shares Outstanding, Diluted (in shares) | shares	57,213	59,947	15,076	12,957
Income Tax Expense (Benefit)	$ 0		$ 0
Effective Income Tax Rate Reconciliation, Percent	0.00%		0.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%		21.00%
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Major Tenants	2	2	2	2
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Two Tenants [Member]
Concentration Risk, Percentage	29.00%	88.00%	30.00%	89.00%
Prepaid Expenses and Other Assets [Member]
Deferred Rent Asset, Net, Current	$ 218		$ 218		$ 83
Consolidated Subsidiaries [Member] | Sky Harbour LLC [Member]
Subsidiary, Ownership Percentage, Parent	100.00%		100.00%
Previously Reported [Member]
Earnings Per Share, Diluted (in dollars per share) | $ / shares	$ 0.03	$ 0.26
Weighted Average Number of Shares Outstanding, Diluted (in shares) | shares	27,527	30,481
Revision of Prior Period, Adjustment [Member]
Earnings Per Share, Diluted (in dollars per share) | $ / shares	$ (0.06)	$ (0.09)
Weighted Average Number of Shares Outstanding, Diluted (in shares) | shares	29,686	29,466
Reclassification of Expenses [Member]
Operating Expenses	$ 88		$ 178