Note 6 - Allowance for Credit Losses - Activity in Accounts Receivable Allowance from Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Balance at beginning of period	$ 94	$ 99
Credit loss expense	41	0
Write-offs	(17)	0
Other adjustments	79	(5)
Balance at end of period	$ 197	$ 94