Note 4 - Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015
Trade Names and Patents [Member]
Gross Carrying Amount	$ 1,525	$ 1,525
Accumulated Amortization	1,290	891
Net	235	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	347	245
Net		102
Gross Carrying Amount	2,419	2,419
Accumulated Amortization	2,184	1,676
Net	$ 235	$ 743

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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