Note 7 - Leases (Details Textual)	1 Months Ended	3 Months Ended
	Nov. 30, 2003 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023
Operating Lease, Weighted Average Remaining Lease Term		3 years		3 years 4 months 24 days
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		$ 0	$ 35,000
Operating Lease, Weighted Average Discount Rate, Percent		5.90%		5.90%
Lessee, Finance Lease, Term of Contract	10 years
Number of Consecutive Renewal Term Options	4
Lessee, Finance Lease, Renewal Term	10 years
Lessee, Finance Lease, Annual Rent	$ 15,000
Leasehold Improvements Required to be Made Per Year	$ 150,000
Lessee, Finance Lease, Remaining Lease Term		29 years 7 months 6 days		29 years 9 months 18 days
Finance Lease, Weighted Average Remaining Lease Term		3 years 4 months 24 days		3 years 8 months 12 days
Finance Lease, Weighted Average Discount Rate, Percent		6.30%		6.30%
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term		1 year
Minimum [Member] | Golf and Related Operations [Member]
Lessee, Finance Lease, Remaining Lease Term		1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term		5 years
Maximum [Member] | Golf and Related Operations [Member]
Lessee, Finance Lease, Remaining Lease Term		4 years 9 months 18 days