Note 7 - Goodwill (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Jun. 30, 2015
Lighting Segment [Member]
Balance as of June 30, 2015
Goodwill	$ 34,913	$ 34,913
Accumulated impairment losses	(34,778)	(34,778)
Goodwill, net as of June 30, 2015	135	135
Graphics Segment [Member]
Balance as of June 30, 2015
Goodwill	28,690	28,690
Accumulated impairment losses	(27,525)	(27,525)
Goodwill, net as of June 30, 2015	1,165	1,165
Technology Segment [Member]
Balance as of June 30, 2015
Goodwill	11,621	11,621
Accumulated impairment losses	(2,413)	(2,413)
Goodwill, net as of June 30, 2015	9,208	9,208
Goodwill	75,224	75,224
Accumulated impairment losses	(64,716)	(64,716)
Goodwill, net as of June 30, 2015	$ 10,508	$ 10,508