Note 2 - Business Segment And Major Customers Information (Detail) - Summarized Financial Information by Reportable Business Segments (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009	Jun. 30, 2008
Net Sales:
Net Sales	$ 268,402	$ 293,501	$ 254,402	$ 233,799	$ 305,286
Operating Income (Loss):
Operating Income (Loss)	6,331	16,304	1,909	(14,411)	(10,970)
Capital Expenditures:
Capital Expenditures	3,436	4,731	6,150
Depreciation and Amortization:
Depreciation and Amortization	7,805	7,877	7,849
Identifiable Assets:
Identifiable Assets	175,226	176,021	173,845	153,118	184,214
Lighting Segment [Member]
Net Sales:
Net Sales	199,610	197,632	166,175
Operating Income (Loss):
Operating Income (Loss)	11,828	9,901	7,803
Capital Expenditures:
Capital Expenditures	1,606	3,231	3,033
Depreciation and Amortization:
Depreciation and Amortization	4,953	4,891	4,729
Identifiable Assets:
Identifiable Assets	93,661	103,395	85,904
Graphics Segment [Member]
Net Sales:
Net Sales	42,131	67,073	61,325
Operating Income (Loss):
Operating Income (Loss)	(1,938)	7,895	4,507
Capital Expenditures:
Capital Expenditures	576	171	2,098
Depreciation and Amortization:
Depreciation and Amortization	884	967	1,000
Identifiable Assets:
Identifiable Assets	27,377	26,780	32,100
Electronics Components Segment [Member]
Net Sales:
Net Sales	18,515	21,449	16,116
Operating Income (Loss):
Operating Income (Loss)	3,634	7,886	2,279
Capital Expenditures:
Capital Expenditures	558	855	566
Depreciation and Amortization:
Depreciation and Amortization	1,130	944	854
Identifiable Assets:
Identifiable Assets	31,805	31,072	23,136
All Other Category [Member]
Net Sales:
Net Sales	8,146	7,347	10,786
Operating Income (Loss):
Operating Income (Loss)	(1,114)	(543)	(1,807)
Capital Expenditures:
Capital Expenditures	182	119	89
Depreciation and Amortization:
Depreciation and Amortization	223	242	404
Identifiable Assets:
Identifiable Assets	8,185	9,963	15,372
Total [Member]
Net Sales:
Net Sales	268,402	293,501	254,402
Operating Income (Loss):
Operating Income (Loss)	6,331	16,304	1,909
Capital Expenditures:
Capital Expenditures	3,436	4,731	6,150
Depreciation and Amortization:
Depreciation and Amortization	7,805	7,877	7,849
Identifiable Assets:
Identifiable Assets	175,226	176,021	173,845
Corporate and Eliminations [Member]
Operating Income (Loss):
Operating Income (Loss)	(6,079)	(8,835)	(10,873)
Capital Expenditures:
Capital Expenditures	514	355	364
Depreciation and Amortization:
Depreciation and Amortization	615	833	862
Identifiable Assets:
Identifiable Assets	$ 14,198	$ 4,811	$ 17,333