Note 2 - Business Segment Information (Details) - Summarized Financial Information by Reportable Business Segments (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2010	Jun. 30, 2009
Segment Reporting Information [Line Items]
Net Sales	$ 280,790	[1]	$ 268,402	[1]	$ 293,501	[1]	$ 254,402	$ 233,799
Operating Income (Loss)	630		6,331		16,304		1,909	(14,411)
Capital Expenditures	7,571		3,436		4,731
Depreciation and Amortization	7,197		7,805		7,877
Lighting Segment [Member]
Segment Reporting Information [Line Items]
Net Sales	206,363		199,610		197,632
Operating Income (Loss)	10,092		11,828		9,901
Capital Expenditures	2,081		1,606		3,231
Depreciation and Amortization	4,434		4,953		4,891
Graphics Segment [Member]
Segment Reporting Information [Line Items]
Net Sales	46,770		42,131		67,073
Operating Income (Loss)	(1,253)		(1,938)		7,895
Capital Expenditures	350		576		171
Depreciation and Amortization	896		884		967
Electronics Components Segment [Member]
Segment Reporting Information [Line Items]
Net Sales	20,333		18,515		21,449
Operating Income (Loss)	(916)		3,634		7,886
Capital Expenditures	1,528		558		855
Depreciation and Amortization	1,357		1,130		944
All Other Category [Member]
Segment Reporting Information [Line Items]
Net Sales	7,324		8,146		7,347
Operating Income (Loss)	(1,451)		(1,114)		(543)
Capital Expenditures	115		182		119
Depreciation and Amortization	191		223		242
Total [Member]
Segment Reporting Information [Line Items]
Net Sales	280,790		268,402		293,501
Operating Income (Loss)	630		6,331		16,304
Capital Expenditures	7,571		3,436		4,731
Depreciation and Amortization	7,197		7,805		7,877
Corporate and Eliminations [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	(5,842)		(6,079)		(8,835)
Capital Expenditures	3,497		514		355
Depreciation and Amortization	$ 319		$ 615		$ 833

[1] Net sales are attributed to geographic areas based upon the location of the operation making the sale.