Note C - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022
Property and equipment, gross	$ 104,502	$ 92,998
Less: accumulated depreciation and amortization	(50,661)	(48,425)
Property and equipment, net	$ 53,841	44,573
Minimum [Member]
Depreciable Life In Years (Year)	1 year
Maximum [Member]
Depreciable Life In Years (Year)	39 years
Land [Member]
Property and equipment, gross	$ 8,940	7,645
Building and Building Improvements [Member]
Property and equipment, gross	$ 24,712	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	$ 41,460	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	$ 6,522	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	$ 227	211
Depreciable Life In Years (Year)	3 years
Leasehold Improvements [Member]
Property and equipment, gross	$ 22,641	$ 21,626
Leasehold Improvements [Member] | Minimum [Member]
Depreciable Life In Years (Year)	1 year
Leasehold Improvements [Member] | Maximum [Member]
Depreciable Life In Years (Year)	20 years