Note 14 - Restructuring Costs - Summary of Restructuring Costs by Segment (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Restructuring and related costs, incurred cost	$ 697	$ 1,353
Total expected to be recognized in remainder of fiscal 2017	209	209
Total fiscal 2017 restructuring expenses	1,562	1,562
Corporate, Non-Segment [Member]
Restructuring and related costs, incurred cost		111
Total expected to be recognized in remainder of fiscal 2017
Total fiscal 2017 restructuring expenses	111	111
Lighting Segment [Member] | Operating Segments [Member]
Restructuring and related costs, incurred cost	479	770
Total expected to be recognized in remainder of fiscal 2017	130	130
Total fiscal 2017 restructuring expenses	900	900
Graphics Segment [Member] | Operating Segments [Member]
Restructuring and related costs, incurred cost	221	221
Total expected to be recognized in remainder of fiscal 2017	79	79
Total fiscal 2017 restructuring expenses	300	300
Technology Segment [Member] | Operating Segments [Member]
Restructuring and related costs, incurred cost	(3)	251
Total expected to be recognized in remainder of fiscal 2017
Total fiscal 2017 restructuring expenses	$ 251	$ 251