Note 11 - Segment Information - Consolidated Net Sales by Products, Fees and Others (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Net sales	$ 26,650	$ 25,679	$ 51,567	$ 52,242
Product [Member]
Net sales	26,200	25,200	50,700	51,200
Associate Service Fees [Member]
Net sales	100	100	200	200
Product and Service, Other [Member]
Net sales	$ 400	$ 400	$ 700	$ 800

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