Note 3 - Business Segment And Major Customers Information (Detail) - Identifiable Assets by Business Segments (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012
Identifiable Assets:
Identifiable Assets	$ 179,520	$ 175,226
Lighting Segment [Member]
Identifiable Assets:
Identifiable Assets	93,747	93,661
Graphics Segment [Member]
Identifiable Assets:
Identifiable Assets	27,752	27,377
Electronics Components Segment [Member]
Identifiable Assets:
Identifiable Assets	33,212	31,805
All Other Category [Member]
Identifiable Assets:
Identifiable Assets	8,164	8,185
Corporate and Eliminations [Member]
Identifiable Assets:
Identifiable Assets	$ 16,645	$ 14,198