Note 4 - Intangible Assets, Net (Details) - Finite-Lived Intangible Assets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carring Amount	$ 2,419	$ 2,419
Accumulated Amortization	1,539	1,402
Net	880	1,017
Trade Names and Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carring Amount	1,525	1,525
Accumulated Amortization	815	739
Net	710	786
Unpatented Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carring Amount	547	547
Accumulated Amortization	500	460
Net	47	87
Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carring Amount	347	347
Accumulated Amortization	224	203
Net	$ 123	$ 144