Note 3 - Allowance for Credit Losses - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Balance, beginning of year	$ 50	$ 50
Provision for credit losses	59	122
Uncollectible accounts written off	(59)	(122)
Balance, end of year	$ 50	$ 50