Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Incremental Costs of Obtaining a Contract, Deferred During Period	$ 68,000	$ 233,000	$ 410,000	$ 1,800,000
Capitalized Contract Cost, Net, Noncurrent	2,784,000		2,784,000		$ 3,772,000
Capitalized Contract Cost, Impairment Loss	$ 13,000	$ 2,000	14,000	24,000
Operating Lease, Impairment Loss				$ 324,000	324,000
Asset Impairment Charges, Total			$ 0		$ 0
Minimum [Member]
Capitalized Contract Cost, Amortization Period (Year)	3 years		3 years
Maximum [Member]
Capitalized Contract Cost, Amortization Period (Year)	5 years		5 years