Note 3 - Business Segment Information (Detail) - Identifiable Assets by Business Segments (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Jun. 30, 2012
Identifiable Assets:
Identifiable Assets	$ 168,366	$ 175,226
Lighting Segment [Member]
Identifiable Assets:
Identifiable Assets	87,038	93,661
Graphics Segment [Member]
Identifiable Assets:
Identifiable Assets	26,581	27,377
Electronics Components Segment [Member]
Identifiable Assets:
Identifiable Assets	30,399	31,805
All Other Category [Member]
Identifiable Assets:
Identifiable Assets	6,125	8,185
Corporate and Eliminations [Member]
Identifiable Assets:
Identifiable Assets	$ 18,223	$ 14,198