Note 3 - Identifiable Assets by Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Jun. 30, 2015
Lighting Segment [Member]
Identifiable Assets:
Identifiable Assets	$ 87,209	$ 90,713
Graphics Segment [Member]
Identifiable Assets:
Identifiable Assets	36,306	29,477
Technology Segment [Member]
Identifiable Assets:
Identifiable Assets	29,956	28,423
Corporate and Eliminations [Member]
Identifiable Assets:
Identifiable Assets	34,063	33,766
Identifiable Assets	$ 187,534	$ 182,379