Acquisitions (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 16,602
Developed technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 15,602
Useful life	5 years
Customer relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 890
Useful life	6 years
Non-competition agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 110
Useful life	3 years 6 months