Note 7 - Contract Assets and Liabilities 1 (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Mar. 31, 2020
Contract with Customer, Receivable, after Allowance for Credit Loss, Total	$ 400,000		$ 300,000
Contract with Customer, Liability, Current	506,000		227,000
Club Membership [Member]
Contract with Customer, Liability, Revenue Recognized	200,000	$ 200,000
License [Member]
Contract with Customer, Liability, Revenue Recognized	33,000	$ 33,000
Contract with Customer, Liability, Noncurrent	1,467,000		$ 1,500,000	$ 2,000,000.0
Deposits held in Escrow for Properties Held for Sale [Member]
Contract with Customer, Liability, Current	$ 10,000,000,000