Note 2 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Revenue from Contract with Customer, Excluding Assessed Tax	$ 720	$ 661	$ 2,152	$ 1,650
Contract with Customer, Liability, Current	$ 814		$ 814		$ 22
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Number of Customers	1	4	2	4
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer One [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 529	$ 148	$ 1,344	$ 223
Concentration Risk, Percentage	73.50%	22.40%	62.50%	13.50%
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Two [Member]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 120	$ 273	$ 220
Concentration Risk, Percentage		18.20%	12.70%	13.30%
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Three [Member]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 115		$ 199
Concentration Risk, Percentage		17.40%		12.10%
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Four [Member]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 67		$ 199
Concentration Risk, Percentage		10.10%		12.10%
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Customers			1		4
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member]
Concentration Risk, Percentage			90.70%
Accounts Receivable, after Allowance for Credit Loss	$ 506		$ 506
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Four Largest Customers [Member]
Concentration Risk, Percentage					66.00%
Accounts Receivable, after Allowance for Credit Loss					$ 412