Note 7 - Goodwill And Other Intangible Assets (Details) - Other Intangible Assets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Jun. 30, 2013
Amortized Intangible Assets
Accumulated Amortization	$ 19,465	$ 19,034
Indefinite-lived Intangible Assets
Gross Carrying Amount	27,701	27,613
Accumulated Amortization	19,465	19,034
Net Amount	8,236	8,579
Trademarks and Trade Names [Member]
Indefinite-lived Intangible Assets
Gross Carrying Amount	3,422	3,422
Net Amount	3,422	3,422
Indefinite Lived Intangible Assets [Member]
Indefinite-lived Intangible Assets
Gross Carrying Amount	3,422	3,422
Net Amount	3,422	3,422
Customer Relationships [Member]
Amortized Intangible Assets
Gross Carrying Amount	10,352	10,352
Accumulated Amortization	7,326	7,068
Net Amount	3,026	3,284
Indefinite-lived Intangible Assets
Accumulated Amortization	7,326	7,068
Patents [Member]
Amortized Intangible Assets
Gross Carrying Amount	338	70
Accumulated Amortization	76	55
Net Amount	262	15
Indefinite-lived Intangible Assets
Accumulated Amortization	76	55
LED Technology Firmware, Software [Member]
Amortized Intangible Assets
Gross Carrying Amount	12,361	12,361
Accumulated Amortization	11,138	10,958
Net Amount	1,223	1,403
Indefinite-lived Intangible Assets
Accumulated Amortization	11,138	10,958
Trade Names [Member]
Amortized Intangible Assets
Gross Carrying Amount	460	460
Accumulated Amortization	431	362
Net Amount	29	98
Indefinite-lived Intangible Assets
Accumulated Amortization	431	362
Noncompete Agreements [Member]
Amortized Intangible Assets
Gross Carrying Amount	768	948
Accumulated Amortization	494	591
Net Amount	274	357
Indefinite-lived Intangible Assets
Accumulated Amortization	494	591
Amortized Intangible Assets [Member]
Amortized Intangible Assets
Gross Carrying Amount	24,279	24,191
Accumulated Amortization	19,465	19,034
Net Amount	4,814	5,157
Indefinite-lived Intangible Assets
Accumulated Amortization	$ 19,465	$ 19,034