Note 5 - Concentrations (Details Textual)	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Accounts Payable and Accrued Liabilities, Current	$ 2,846,000	$ 2,333,000
Two Vendors [Member]
Accounts Payable and Accrued Liabilities, Current	$ 266,000	$ 200,000
Supplier Concentration Risk [Member] | Inventory Purchases [Member]
Number of Major Vendors	2	2
Supplier Concentration Risk [Member] | Inventory Purchases [Member] | Two Vendors [Member]
Concentration Risk, Percentage	61.00%	76.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Major Customers	5	2
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Five Customers [Member]
Concentration Risk, Percentage	10.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Two Customers [Member]
Concentration Risk, Percentage		10.00%