Note 14 - Restructuring Costs - Summary of Restructuring Costs by Segment (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2017 USD ($)
Restructuring and related costs, incurred cost	$ (989)	$ 364
Total expected to be recognized in remainder of fiscal 2017	60	60
Total Fiscal 2017 Restructuring Expenses	424	424
Corporate, Non-Segment [Member]
Restructuring and related costs, incurred cost	14	125
Total expected to be recognized in remainder of fiscal 2017
Total Fiscal 2017 Restructuring Expenses	125	125
Lighting Segment [Member] | Operating Segments [Member]
Restructuring and related costs, incurred cost	(1,187)	(417)
Total expected to be recognized in remainder of fiscal 2017
Total Fiscal 2017 Restructuring Expenses	(417)	(417)
Graphics Segment [Member] | Operating Segments [Member]
Restructuring and related costs, incurred cost	183	404
Total expected to be recognized in remainder of fiscal 2017	60	60
Total Fiscal 2017 Restructuring Expenses	464	464
Technology Segment [Member] | Operating Segments [Member]
Restructuring and related costs, incurred cost	1	252
Total expected to be recognized in remainder of fiscal 2017
Total Fiscal 2017 Restructuring Expenses	$ 252	$ 252