Note 3 - Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Jun. 30, 2015
Trade Names and Patents [Member]
Gross Carrying Amount	$ 1,525	$ 1,525
Accumulated Amortization	948	891
Net	577	634
Unpatented Technology [Member]
Gross Carrying Amount	547	547
Accumulated Amortization	$ 547	540
Net		7
Licensing Agreements [Member]
Gross Carrying Amount	$ 347	347
Accumulated Amortization	261	245
Net	86	102
Gross Carrying Amount	2,419	2,419
Accumulated Amortization	1,756	1,676
Net	$ 663	$ 743