Note K - Economic Dependency - Substantial Net Sales to Certain Customers (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Net sales	$ 142,515	$ 129,860
Customer Concentration Risk [Member] \| Revenue Benchmark [Member]
Net sales	73,521	77,161
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Customer 1 [Member]
Net sales	39,797	17,165
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Customer 2 [Member]
Net sales	$ 33,724	42,289
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Customer 3 [Member]
Net sales		$ 17,707

Amount, including 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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details