Note C - Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Property and equipment, gross	$ 50,301	$ 46,834
Less: accumulated depreciation and amortization	(32,165)	(31,667)
Property and equipment, net	$ 18,136	15,167
Minimum [Member]
Depreciable Life In Years (Year)	1 year
Maximum [Member]
Depreciable Life In Years (Year)	39 years
Land [Member]
Property and equipment, gross	$ 1,200	1,200
Building and Building Improvements [Member]
Property and equipment, gross	$ 3,706	3,324
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	$ 24,194	23,846
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	$ 3,954	2,994
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]
Depreciable Life In Years (Year)	3 years
Property and equipment, gross	$ 209	209
Leasehold Improvements [Member]
Property and equipment, gross	$ 17,038	$ 15,261
Leasehold Improvements [Member] \| Minimum [Member]
Depreciable Life In Years (Year)	1 year
Leasehold Improvements [Member] \| Maximum [Member]
Depreciable Life In Years (Year)	15 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 210
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-Section S99
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-Subparagraph (SX 210.5-02(14))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(8))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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