Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Incremental Costs of Obtaining a Contract, Deferred During Period	$ 69,000	$ 68,000	$ 301,000	$ 410,000
Capitalized Contract Cost, Net, Noncurrent	1,641,000		1,641,000		$ 2,441,000
Capitalized Contract Cost, Impairment Loss	$ 26,000	$ 13,000	41,000	$ 14,000
Asset Impairment Charges, Total			$ 0		$ 0
Minimum [Member]
Capitalized Contract Cost, Amortization Period (Year)					3 years
Maximum [Member]
Capitalized Contract Cost, Amortization Period (Year)					5 years