Note 4 - Acquisition-Related Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Know-How [Member]
Gross Amount	$ 1,018	$ 1,018
Accumulated Amortization	(348)	(297)
Net Amount	670	721
Developed Technology Rights [Member]
Gross Amount	6,466	6,466
Accumulated Amortization	(2,596)	(2,134)
Net Amount	3,870	4,332
Gross Amount	7,484	7,484
Accumulated Amortization	(2,944)	(2,431)
Net Amount	$ 4,540	$ 5,053

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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