Note 7 - Goodwill and Other Intangible Assets (Details) - Goodwill - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015
Goodwill [Line Items]
Goodwill	$ 75,224	$ 75,224
Accumulated impairment Losses	(64,716)	(64,716)
Net Goodwill	10,508	10,508
Lighting Segment [Member]
Goodwill [Line Items]
Goodwill	34,913	34,913
Accumulated impairment Losses	(34,778)	(34,778)
Net Goodwill	135	135
Graphics Segment [Member]
Goodwill [Line Items]
Goodwill	28,690	28,690
Accumulated impairment Losses	(27,525)	(27,525)
Net Goodwill	1,165	1,165
Technology Segment [Member]
Goodwill [Line Items]
Goodwill	11,621	11,621
Accumulated impairment Losses	(2,413)	(2,413)
Net Goodwill	$ 9,208	$ 9,208

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a,h)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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