Note K - Economic Dependency - Substantial Net Sales to Certain Customers (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2023	Jun. 30, 2022
Net sales		$ 154,015	$ 170,966
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Net sales		109,712	123,369
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer 1 [Member]
Net sales		61,646	37,218
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer 2 [Member]
Net sales	[1]	$ 48,066	54,599
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer 3 [Member]
Net sales			$ 31,552

[1] Sales were less than 10% of the respective period’s consolidated net sales.