Note 15 - Restructuring Costs - Summary of Restructuring Costs by Segment (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2017 USD ($)
Restructuring and related costs, incurred cost	$ 412
Corporate, Non-Segment [Member]
Restructuring and related costs, incurred cost	125
Lighting Segment [Member] | Operating Segments [Member]
Restructuring and related costs, incurred cost	(417)
Graphics Segment [Member] | Operating Segments [Member]
Restructuring and related costs, incurred cost	452
Technology Segment [Member] | Operating Segments [Member]
Restructuring and related costs, incurred cost	$ 252