Note 2 - Summary of Significant Accounting Policies (Details Textual) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended						6 Months Ended	9 Months Ended		12 Months Ended
	Mar. 07, 2025 $ / shares	Mar. 31, 2025	Aug. 31, 2023	Sep. 30, 2025 USD ($) $ / shares	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2025	Sep. 30, 2025 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) shares	Dec. 31, 2024 USD ($) $ / shares
Net Income (Loss) Attributable to Parent				$ (2,596)	$ (1,931)	$ (1,502)	$ (1,431)	$ (1,266)	$ (1,481)		$ (6,029)	$ (4,178)
Retained Earnings (Accumulated Deficit)				(49,617)							(49,617)		$ (43,541)
Cash and Cash Equivalent				$ 3,450							3,450		$ 2,002
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation											$ (4,712)	(4,360)
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares	$ 0.0001			$ 0.0001							$ 0.0001		$ 0.0001
Stock Issued During Period, Shares, Whole Shares Issued Instead of Fractional Shares (in shares) | shares											1
Stock Issued During Period, Shares, Total Whole Shares Issued Instead of Fractional Shares (in shares) | shares											76
Stock Issued During Period, Shares, Fractional Shares (in shares) | shares											0
Payments of Stock Issuance Costs, Fractional Shares											$ 0
Accounts Receivable, Allowance for Credit Loss				$ 0							0		$ 0
Inventory Valuation Reserves				568							568		338
Deferred Costs, Noncurrent				211							211		49
Impairment, Long-Lived Asset, Held-for-Use											0		0
Contract with Customer, Liability				3							3		2
Revenue from Contract with Customer, Excluding Assessed Tax				146			126				302	600
Cost of Product and Service Sold				291			82				343	359
Contract with Customer, Refund Liability				8							8		10
Marketing and Advertising Expense				140			$ 94				$ 271	$ 415
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate											0.00%
Number of Operating Segments										1	1
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares											4,495,179	711,138
Cash, Uninsured Amount				$ 2,950							$ 2,950		$ 1,600
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Customers				1			1				1	1
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Customers				1							1		1
Individual Customers [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage											85.00%	82.00%
Customer 1 [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage				16.00%			13.00%				10.00%	10.00%
Customer 1 [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage											37.00%		95.00%
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares											355,368	3,904
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares											79,415	0
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares											1,055,809	707,234
Shipping and Handling [Member]
Revenue from Contract with Customer, Excluding Assessed Tax				$ 1			$ 0				$ 2	$ 0
Cost of Product and Service Sold				$ 8			$ 5				$ 16	$ 28
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)				3 years							3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)				4 years							4 years
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	17	17	100								17