Note 3 - Business Segment And Major Customers Information (Detail) - Summarized Financial Information by Reportable Business Segments (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2012		Sep. 30, 2011
Net Sales	$ 74,719	[1]	$ 65,495	[1]
Operating Income (Loss)	3,027		2,178
Capital Expenditures	1,336		792
Depreciation and Amortization	1,850		1,965
Lighting Segment [Member]
Net Sales	55,791		49,171
Operating Income (Loss)	4,513		3,304
Capital Expenditures	316		469
Depreciation and Amortization	1,165		1,220
Graphics Segment [Member]
Net Sales	10,745		10,488
Operating Income (Loss)	(355)		(581)
Capital Expenditures	218		109
Depreciation and Amortization	222		226
Electronics Components Segment [Member]
Net Sales	5,754		4,404
Operating Income (Loss)	786		1,065
Capital Expenditures	133		97
Depreciation and Amortization	320		263
All Other Category [Member]
Net Sales	2,429		1,432
Operating Income (Loss)	(2)		(139)
Capital Expenditures	30		107
Depreciation and Amortization	47		54
Corporate and Eliminations [Member]
Operating Income (Loss)	(1,915)		(1,471)
Capital Expenditures	639		10
Depreciation and Amortization	$ 96		$ 202

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