Note C - Property and Equipment, Net (Details) - Property and Equipment (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Dec. 31, 2013	Jun. 30, 2013
Property, Plant and Equipment [Line Items]
Property and equipment	$ 44,518	$ 43,264
Less: accumulated depreciation and amortization	(35,220)	(34,059)
Property and equipment, net	9,298	9,205
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, depreciable life in years
Property and equipment	393	393
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	2,793	2,793
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, depreciable life in years	7 years
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, depreciable life in years	39 years
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	27,117	26,141
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, depreciable life in years	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, depreciable life in years	12 years
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	3,182	3,030
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, depreciable life in years	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, depreciable life in years	5 years
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, depreciable life in years	3 years
Property and equipment	208	136
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 10,825	$ 10,771
Leasehold Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, depreciable life in years	1 year
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, depreciable life in years	15 years