Note 7 - Goodwill And Other Intangible Assets (Detail) - Other Intangible Assets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012
Accumulated Amortization	$ 17,228	$ 16,539
Gross Carrying Amount	3,422
Net Amount	3,422
Gross Carrying Amount	27,613	27,613
Accumulated Amortization	17,228	16,539
Net Amount	10,385	11,074
Trademarks and Trade Names [Member]
Gross Carrying Amount	3,422	3,422
Net Amount	3,422	3,422
Indefinite Lived Intangible Assets [Member]
Gross Carrying Amount		3,422
Net Amount		3,422
Customer Relationships [Member]
Gross Carrying Amount	10,352	10,352
Accumulated Amortization	6,736	6,538
Net Amount	3,616	3,814
Accumulated Amortization	6,736	6,538
Patents [Member]
Gross Carrying Amount	70	70
Accumulated Amortization	52	51
Net Amount	18	19
Accumulated Amortization	52	51
LED Technology Firmware, Software [Member]
Gross Carrying Amount	12,361	12,361
Accumulated Amortization	9,658	9,225
Net Amount	2,703	3,136
Accumulated Amortization	9,658	9,225
Trade Names [Member]
Gross Carrying Amount	460	460
Accumulated Amortization	293	270
Net Amount	167	190
Accumulated Amortization	293	270
Noncompete Agreements [Member]
Gross Carrying Amount	948	948
Accumulated Amortization	489	455
Net Amount	459	493
Accumulated Amortization	489	455
Amortized Intangible Assets [Member]
Gross Carrying Amount	24,191	24,191
Accumulated Amortization	17,228	16,539
Net Amount	6,963	7,652
Accumulated Amortization	$ 17,228	$ 16,539