Note 2 - Summary of Significant Accounting Policies - Revenues and Accounts Receivable from Major Distribution Partners and Customers (Details) - Customer Concentration Risk [Member] - Accounts Receivable [Member]	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Distributor A [Member]
Accounts receivable, concentration risk	35.00%	30.00%
Major U.S. Retailer A [Member]
Accounts receivable, concentration risk	15.00%
Major U.S. Retailer C [Member]
Accounts receivable, concentration risk		15.00%