Note 3 - Business Segment And Major Customers Information (Detail) - Inter-segment revenues (USD $) In Thousands, unless otherwise specified	3 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Lighting Segment [Member]
Inter-segment net sales	$ 657	$ 599
Graphics Segment [Member]
Inter-segment net sales	837	147
Electronics Components Segment [Member]
Inter-segment net sales	6,336	4,818
All Other Category [Member]
Inter-segment net sales	$ 866	$ 1,045

Amount of revenue from transactions with other operating segments of the same entity.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 27

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration