Note H - Segment Information - Net Sales by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2023
Net sales	$ 25,136	$ 32,699	$ 84,307	$ 84,307	$ 118,121	$ 118,121
UNITED STATES
Net sales	15,457	24,254	56,990		82,995
Non-US [Member]
Net sales	$ 9,679	$ 8,445	$ 27,317		$ 35,126

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.

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+ Details