Note 3 - Revenue - Timing of Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues	$ 7,851	$ 7,988	$ 19,850	$ 20,736
Transferred at Point in Time [Member]
Revenues	5,297	6,078	13,013	13,287
Transferred over Time [Member]
Revenues	$ 2,554	$ 1,910	$ 6,837	$ 7,449

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details