Note 7 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Payroll expenses and taxes payable	$ 221,000	$ 157,000
Commissions and bonuses payable and general accrued liabilities	726,000	946,000
Total accrued liabilities	$ 947,000	$ 1,103,000