Note 3 - Segment Reporting Information (Details) - Identifiable Assets by Segment - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015
Identifiable Assets:
Identifiable Assets	$ 188,408	$ 182,379
Corporate and Eliminations [Member]
Identifiable Assets:
Identifiable Assets	32,350	33,766
Lighting Segment [Member]
Identifiable Assets:
Identifiable Assets	90,570	90,713
Graphics Segment [Member]
Identifiable Assets:
Identifiable Assets	35,920	29,477
Technology Segment [Member]
Identifiable Assets:
Identifiable Assets	$ 29,568	$ 28,423