Acquisitions (Details 3) - Attensity, Inc $ in Thousands	Feb. 08, 2016 USD ($)
Acquired Intangible Assets [Line Items]
Total intangible assets	$ 4,917
Customer relationships
Acquired Intangible Assets [Line Items]
Total intangible assets	$ 140
Economic Useful Life (in years)	5 years
Technology
Acquired Intangible Assets [Line Items]
Total intangible assets	$ 141
Economic Useful Life (in years)	5 years
In-process research and development
Acquired Intangible Assets [Line Items]
Total intangible assets	$ 3,193
Patents
Acquired Intangible Assets [Line Items]
Total intangible assets	$ 1,443
Economic Useful Life (in years)	8 years