Note 4 - Intangible Assets, Net - Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Trade Names and Patents [Member]
Gross Carrying Amount	$ 1,525	$ 1,525
Accumulated Amortization	891	815
Net	634	710
Unpatented Technology [Member]
Gross Carrying Amount	547	547
Accumulated Amortization	540	500
Net	7	47
Licensing Agreements [Member]
Gross Carrying Amount	347	347
Accumulated Amortization	245	224
Net	102	123
Gross Carrying Amount	2,419	2,419
Accumulated Amortization	1,676	1,539
Net	$ 743	$ 880