Note K - Economic Dependency - Substantial Net Sales to Certain Customers (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2024	Jun. 30, 2023
Net sales		$ 113,796	$ 154,015
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Net sales		77,308	109,712
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer 1 [Member]
Net sales	[1]	48,055	48,066
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer 2 [Member]
Net sales		16,312	$ 61,646
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer 3 [Member]
Net sales		$ 12,941

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