Note 3 - Revenue - Timing of Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues	$ 7,490	$ 7,851	$ 19,430	$ 19,850
Transferred at Point in Time [Member]
Revenues	6,263	5,297	15,987	13,013
Transferred over Time [Member]
Revenues	$ 1,227	$ 2,554	$ 3,443	$ 6,837

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