Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Business Acquisition [Line Items]
Goodwill	$ 73,534
Apex Optimisation
Business Acquisition [Line Items]
Tangible assets acquired, net	360
Goodwill	15,959
Deferred tax liabilities	(1,619)
Total assets acquired, net	23,000
Developed Technology Rights | Apex Optimisation
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	4,500
Customer Relationship | Apex Optimisation
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 3,800