Note 7 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Payroll expenses and taxes payable	$ 291,000	$ 157,000
Commissions and bonuses payable and general accrued liabilities	158,000	946,000
Total accrued liabilities	$ 449,000	$ 1,103,000	[1]

[1] The condensed consolidated balance sheet as of December 31, 2023, has been prepared using information from the audited consolidated balance sheet as of that date.