Note 2 - Concentration of Credit Risk and Major Customers	12 Months Ended
Dec. 31, 2022
Notes to Financial Statements
Concentration Risk Disclosure [Text Block]	NOTE 2. CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS Financial instruments that potentially subject us to concentrations of credit risk consist principally of cash and accounts receivable. With regard to cash, we maintain our excess cash balances in checking accounts at two high-credit quality financial institutions. These accounts may at times exceed federally insured limits. We grant credit to customers in the normal course of business and do not require collateral on our accounts receivable. We have certain customers whose revenue individually represented 10% or more of net sales, or whose accounts receivable balances individually represented 10% or more of total accounts receivable. One customer accounted for 26.9% of net sales for both of the years ended December 31, 2022 and 2021. Accounts receivable for one customer was 21.1% and 19.3% at December 31, 2022 and 2021, respectfully.

Note 2 - Concentration of Credit Risk and Major Customers

12 Months Ended

Dec. 31, 2022

Concentration Risk Disclosure [Text Block]

NOTE 2. CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS

Financial instruments that potentially subject us to concentrations of credit risk consist principally of cash and accounts receivable. With regard to cash, we maintain our excess cash balances in checking accounts at two high-credit quality financial institutions. These accounts may at times exceed federally insured limits. We grant credit to customers in the normal course of business and do not require collateral on our accounts receivable.

We have certain customers whose revenue individually represented 10% or more of net sales, or whose accounts receivable balances individually represented 10% or more of total accounts receivable. One customer accounted for 26.9% of net sales for both of the years ended December 31, 2022 and 2021. Accounts receivable for one customer was 21.1% and 19.3% at December 31, 2022 and 2021, respectfully.