Note G - Economic Dependency - Substantial Net Sales to Certain Customers (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Net sales	$ 35,482	$ 28,766	$ 108,007	$ 95,994
Customer Concentration Risk [Member] \| Revenue Benchmark [Member]
Net sales	21,014	16,964	56,913	58,956
Customer Concentration Risk [Member] \| Customer 1 [Member] \| Revenue Benchmark [Member]
Net sales	6,806	10,849	29,571	33,457
Customer Concentration Risk [Member] \| Customer 2 [Member] \| Revenue Benchmark [Member]
Net sales	$ 14,208	3,108	$ 27,342	13,263
Customer Concentration Risk [Member] \| Customer 3 [Member] \| Revenue Benchmark [Member]
Net sales		$ 3,007		$ 12,236

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
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+ Details