Note 8 - Leases (Details Textual)	1 Months Ended
	Nov. 30, 2003	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jun. 30, 2020 USD ($)
Operating Lease, Weighted Average Remaining Lease Term (Year)		3 years 4 months 24 days
Operating Lease, Liability, Total		$ 1,588,000	$ 1,728,000
Operating Lease, Right-of-Use Asset		$ 1,588,000	$ 1,728,000
Operating Lease, Weighted Average Discount Rate, Percent		4.70%	4.70%
Lessee, Finance Lease, Term of Contract (Year)	10 years
Number of Consecutive Renewal Term Options	4
Lessee, Finance Lease, Renewal Term (Year)	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 (Year)		32 years 3 months 18 days
Finance Lease, Weighted Average Remaining Lease Term (Year)		2 years 8 months 12 days
Finance Lease, Weighted Average Discount Rate, Percent		4.80%	4.50%
Lease for Golf Cart GPS Equipment [Member]
Operating Lease, Liability, Total		$ 67,000
Operating Lease, Right-of-Use Asset		$ 67,000
Operating Lease Agreement for Hotel furniture [Member]
Operating Lease, Liability, Total				$ 266,000
Operating Lease, Right-of-Use Asset				$ 266,000
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)		1 year
Minimum [Member] | Golf and Related Operations [Member]
Lessee, Finance Lease, Remaining Lease Term (Year)		1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)		4 years 8 months 12 days
Maximum [Member] | Golf and Related Operations [Member]
Lessee, Finance Lease, Remaining Lease Term (Year)		3 years 10 months 24 days