Note C - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Jun. 30, 2024
Property and equipment, gross	$ 108,423	$ 107,519
Less: accumulated depreciation and amortization	(57,484)	(55,308)
Property and equipment, net	50,939	52,211
Land [Member]
Property and equipment, gross	8,941	8,940
Building and Building Improvements [Member]
Property and equipment, gross	$ 24,960	24,723
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	$ 43,833	43,631
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	$ 7,058	6,765
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	$ 237	237
Depreciable Life In Years (Year)	3 years
Leasehold Improvements [Member]
Property and equipment, gross	$ 23,394	$ 23,223
Leasehold Improvements [Member] | Minimum [Member]
Depreciable Life In Years (Year)	1 year
Leasehold Improvements [Member] | Maximum [Member]
Depreciable Life In Years (Year)	20 years