Note 2 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Revenue from Contract with Customer, Excluding Assessed Tax	$ 750	$ 491	$ 1,432	$ 989
Customer Concentration Risk [Member] \| Revenue from Contract with Customer Benchmark [Member]
Number of Customers	2	4	2	4
Customer Concentration Risk [Member] \| Revenue from Contract with Customer Benchmark [Member] \| Largest Customer [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 490	$ 157	$ 815	$ 181
Concentration Risk, Percentage	65.30%	32.00%	56.90%	18.30%
Customer Concentration Risk [Member] \| Revenue from Contract with Customer Benchmark [Member] \| Second Largest Customer [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 100	$ 108	$ 273	$ 109
Concentration Risk, Percentage	13.30%	22.00%	19.10%	11.00%
Customer Concentration Risk [Member] \| Revenue from Contract with Customer Benchmark [Member] \| Third Largest Customer [Member]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 77		$ 108
Concentration Risk, Percentage		15.70%		10.90%
Customer Concentration Risk [Member] \| Revenue from Contract with Customer Benchmark [Member] \| Fourth Largest Customer [Member]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 51		$ 100
Concentration Risk, Percentage		10.40%		10.10%
Customer Concentration Risk [Member] \| Accounts Receivable [Member]
Number of Customers	2		2		4
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Two Largest Customers [Member]
Concentration Risk, Percentage			79.00%
Accounts Receivable, after Allowance for Credit Loss	$ 466		$ 466
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Four Largest Customers [Member]
Concentration Risk, Percentage					66.00%
Accounts Receivable, after Allowance for Credit Loss					$ 412