Note 6 - Goodwill And Other Intangible Assets (Detail) - Other Intangible Assets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Accumulated Amortization	$ 16,539	$ 13,908
Gross Carrying Amount		3,422
Net Amount		3,422
Gross Carrying Amount	27,613	26,422
Accumulated Amortization	16,539	13,908
Net Amount	11,074	12,514
Trademarks and Trade Names [Member]
Gross Carrying Amount	3,422	3,422
Net Amount	3,422	3,422
Total [Member]
Gross Carrying Amount	3,422
Net Amount	3,422
Customer Relationships [Member]
Gross Carrying Amount	10,352	10,352
Accumulated Amortization	6,538	5,745
Net Amount	3,814	4,607
Accumulated Amortization	6,538	5,745
Patents [Member]
Gross Carrying Amount	70	70
Accumulated Amortization	51	46
Net Amount	19	24
Accumulated Amortization	51	46
LED Technology Firmware, Software [Member]
Gross Carrying Amount	12,361	11,228
Accumulated Amortization	9,225	7,614
Net Amount	3,136	3,614
Accumulated Amortization	9,225	7,614
Trade Names [Member]
Gross Carrying Amount	460	460
Accumulated Amortization	270	178
Net Amount	190	282
Accumulated Amortization	270	178
Noncompete Agreements [Member]
Gross Carrying Amount	948	890
Accumulated Amortization	455	325
Net Amount	493	565
Accumulated Amortization	455	325
Total [Member]
Gross Carrying Amount	24,191	23,000
Accumulated Amortization	16,539	13,908
Net Amount	7,652	9,092
Accumulated Amortization	$ 16,539	$ 13,908