Note 11 - Real Estate Development (Details Textual)				12 Months Ended
	Sep. 20, 2024 USD ($) a ft²	Apr. 28, 2023 USD ($)	Jan. 25, 2022 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 18, 2024 USD ($)	Sep. 30, 2024	Jan. 01, 2023 USD ($)	Dec. 31, 2021 USD ($)	Dec. 21, 2021 USD ($)	Jul. 30, 2020 a	Jul. 01, 2020	Jun. 16, 2020 a	Sep. 27, 2018 a
Income (Loss) from Equity Method Investments				$ (5,467,771)	$ 1,501,268
Investee Losses in Excess of Equity Investment				5,016,198	1,464,218			$ 3,185,923
Proceeds from Equity Method Investment, Distribution, Return of Capital				36,480	30,368
Gain (Loss) on Transfer/Sale of Land				1,732,353	6,489,976
TIF Improvement Costs									$ 23,336,500
Estimated Cost of Tax Increment Financing Eligible Improvements, Expected Reduction			$ 5,744,000
Estimated Cost of Tax Increment Financing Eligible Improvements, Maximum Principle			$ 17,592,881
Income Taxes Receivable, Noncurrent				18,898,445	13,972,875
Payments to Acquire Equity Method Investments, Gross				2,315,650
Proceeds from Sale, Land, Held-for-Investment		$ 8,800,000
Land [Member]
Gain (Loss) on Disposition of Assets				1,732,000	6,490,000
State and Local Jurisdiction [Member]
Income Taxes Receivable, Noncurrent				18,898,000	13,973,000
Income Tax Receivable Principal				15,551,000	11,307,000
Income Tax Receivable Interest				3,347,000	2,666,000
Indemnity Agreement [Member]
Debt Instrument, Maximum Reimbursement and Indemnification Amount				7,500,000						$ 5,000,000
Doran Canterbury I Joint Venture [Member]
Area of Land (Acre) | a														13
Equity Method Investment, Ownership Percentage														27.40%
Income (Loss) from Equity Method Investments				(3,552,000)	1,722,000
Investee Losses in Excess of Equity Investment				5,016,000	1,464,000
Doran Canterbury I Joint Venture [Member] | Indemnity Agreement [Member]
Debt Instrument, Maximum Reimbursement and Indemnification Amount						$ 7,500,000
Doran Canterbury II [Member]
Area of Land (Acre) | a											10
Equity Method Investment, Ownership Percentage											27.40%
Income (Loss) from Equity Method Investments				(1,923,000)
Doran Canterbury II [Member] | Doran Canterbury II, LLC [Member]
Equity Method Investment, Ownership Percentage											72.60%
Doran Canterbury II [Member] | Indemnity Agreement [Member]
Debt Instrument, Maximum Reimbursement and Indemnification Amount				1,000,000		$ 1,000,000
Canterbury DBSV [Member]
Area of Land (Acre) | a													13
Equity Method Investment, Ownership Percentage												61.87%
Income (Loss) from Equity Method Investments				8,000	223,000
Proceeds from Equity Method Investment, Distribution, Return of Capital				36,000	$ 30,000
Trackside Investments, LLC [Member]
Area of Land (Acre) | a	3.5
Equity Method Investment, Ownership Percentage	50.00%
Area of Real Estate Property (Square Foot) | ft²	16,000
Equity Method Investment, Annual Preferred Return Percentage							6.00%
Gain (Loss) on Transfer/Sale of Land				$ 1,732,000
Payments to Acquire Equity Method Investments, Gross	$ 2,316,000