Acquisitions (Details 1) - May. 06, 2014 - Uptivity - USD ($) $ in Thousands	Total
Acquired Intangible Assets [Line Items]
Total intangible assets	$ 24,448
Customer relationships
Acquired Intangible Assets [Line Items]
Total intangible assets	$ 11,460
Economic Useful Life (in years)	8 years
Trade name and trademarks
Acquired Intangible Assets [Line Items]
Total intangible assets	$ 1,942
Economic Useful Life (in years)	5 years
Technology
Acquired Intangible Assets [Line Items]
Total intangible assets	$ 7,686
Economic Useful Life (in years)	7 years
In-process research and development
Acquired Intangible Assets [Line Items]
Total intangible assets	$ 3,360
Economic Useful Life	Indefinite