Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Details Textual)	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($) shares	Jun. 30, 2023 USD ($) shares	Mar. 31, 2023 USD ($)	Jun. 30, 2024 USD ($) shares	Jun. 30, 2023 USD ($) shares	Dec. 31, 2023 USD ($)	Jul. 31, 2024 USD ($)	May 17, 2024 USD ($)
Cash and Cash Equivalents, at Carrying Value	$ 1,456,000			$ 1,456,000		$ 3,867,000
Working Capital (Deficit)	5,200,000			5,200,000		7,200,000
Net Cash Provided by (Used in) Operating Activities				(2,455,000)	$ (2,486,000)
Net Income (Loss) Attributable to Parent	(1,568,000)	$ (1,024,000)		(2,720,000)	(2,387,000)
Retained Earnings (Accumulated Deficit)	(85,774,000)	(83,100,000)		(85,774,000)	(83,100,000)	(83,054,000)
Net Cash Provided by (Used in) Financing Activities				97,000	(408,000)
Proceeds from Stock Options Exercised			$ 0	37,000	0
Revenues	7,157,000	4,806,000		12,156,000	8,676,000
Slotting Fees and Promotional Allowances	$ 1,200,000	$ 394,000		$ 1,600,000	$ 699,000
Maximum Discount for Customers, Payment Made Within 15 Days	2.00%			2.00%
Accounts Receivable, Allowance for Credit Loss, Current	$ 42,000			$ 42,000		$ 260,000
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares	13,037,772	12,154,480		13,037,772	12,154,480
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares	0	27,721,945		0	27,721,945
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares	1,998,979	600,000		1,998,979	600,000
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Major Customers				1		0
Customer Concentration Risk [Member] | Accounts Receivable [Member] | One Customer [Member]
Concentration Risk, Percentage				11.00%
Shipping and Handling [Member]
Revenues	$ 44,000	$ 45,000		$ 78,000	$ 86,000
Subsequent Event [Member]
Private Placement Units, Gross Proceeds							$ 3,700,000
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity								$ 2,000,000