Note K - Economic Dependency - Substantial Net Sales to Certain Customers (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2022	Jun. 30, 2021
Net sales		$ 170,966	$ 178,520
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Net sales		123,369	116,230
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer 1 [Member]
Net sales		54,599	90,820
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer 2 [Member]
Net sales	[1]	37,218
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer 3 [Member]
Net sales		$ 31,552	$ 25,410

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