Note 5 - Allowance for Credit Losses - Activity in Accounts Receivable Allowance from Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Balance at beginning of period	$ 99	$ 17
Bad debt expense	0	127
Write-offs	0	(47)
Other adjustments	(5)	2
Balance at end of period	$ 94	$ 99