Note 4 - Goodwill and Acquisition-related Intangible Assets, Net - Acquisition-related Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accumulated Amortization	$ (5,507)	$ (4,482)
Net Amount	1,977	3,002
Gross Amount	7,484	7,484
Know-How [Member]
Accumulated Amortization	(602)	(500)
Net Amount	416	518
Gross Amount	1,018	1,018
Developed Technology Rights [Member]
Accumulated Amortization	(4,905)	(3,982)
Net Amount	1,561	2,484
Gross Amount	$ 6,466	$ 6,466

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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