Note 3 - Business Combinations - Acquired Finite-lived Intangible Assets (Details) $ in Thousands	May 01, 2015 USD ($)
Fair Value	$ 2,867
Developed Technology Rights [Member]
Fair Value	$ 1,005
Finite-Lived Intangible Assets, Amortization Method	Accelerated
Acquired Finite-Lived Intangible Assets, Estimated Useful Life (Month)	5 years
In Process Research and Development [Member]
Fair Value	$ 1,188	[1]
Finite-Lived Intangible Assets, Amortization Method	Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life (Month)	5 years	[1]
Customer Relationships [Member]
Fair Value	$ 500
Finite-Lived Intangible Assets, Amortization Method	Accelerated
Acquired Finite-Lived Intangible Assets, Estimated Useful Life (Month)	3 years
Order or Production Backlog [Member]
Fair Value	$ 174
Finite-Lived Intangible Assets, Amortization Method	Straight-line
Acquired Finite-Lived Intangible Assets, Estimated Useful Life (Month)	180 days

[1] Amortization started in the quarter ended December 31, 2016 upon the completion of the research and development activities of the corresponding projects.