Note 9 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Stock-based compensation expense	[1]	$ 111	$ 18	$ 959	$ 44
Restricted Stock [Member]
Stock-based compensation expense		100	18	638	44
Share-Based Payment Arrangement, Option [Member]
Stock-based compensation expense		$ 11	$ 0	$ 321	$ 0

[1] Stock-based compensation is included within the Compensation expense caption.