Note C - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Jun. 30, 2022
Property and equipment, gross	$ 104,270	$ 92,998
Less: accumulated depreciation and amortization	(49,513)	(48,425)
Property and equipment, net	54,757	44,573
Land [Member]
Property and equipment, gross	7,645	7,645
Building and Building Improvements [Member]
Property and equipment, gross	$ 25,817	17,415
Building and Building Improvements [Member] | Minimum [Member]
Depreciable Life In Years (Year)	7 years
Building and Building Improvements [Member] | Maximum [Member]
Depreciable Life In Years (Year)	39 years
Machinery and Equipment [Member]
Property and equipment, gross	$ 41,715	40,131
Machinery and Equipment [Member] | Minimum [Member]
Depreciable Life In Years (Year)	3 years
Machinery and Equipment [Member] | Maximum [Member]
Depreciable Life In Years (Year)	12 years
Office Equipment [Member]
Property and equipment, gross	$ 6,288	5,970
Office Equipment [Member] | Minimum [Member]
Depreciable Life In Years (Year)	3 years
Office Equipment [Member] | Maximum [Member]
Depreciable Life In Years (Year)	5 years
Vehicles [Member]
Property and equipment, gross	$ 265	211
Depreciable Life In Years (Year)	3 years
Leasehold Improvements [Member]
Property and equipment, gross	$ 22,540	$ 21,626
Leasehold Improvements [Member] | Minimum [Member]
Depreciable Life In Years (Year)	1 year
Leasehold Improvements [Member] | Maximum [Member]
Depreciable Life In Years (Year)	15 years