Business Acquisition - Intangible Assets Useful Life (Details) - TVN [Member] - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
		Sep. 30, 2016	Jul. 01, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Intangibles		$ 41,100
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		6 months
Intangibles		$ 3,600
Developed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		4 years	4 years
Intangibles		$ 21,700
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		5 years
Intangibles		$ 15,200
In Process Research and Development
Acquired Finite-Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	[1]	$ 0
Trade Name
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		4 years
Intangibles		$ 600

[1] By the end of the second quarter of 2016, the Company completed the TVN in-process research and development activities and as a result, the in-process research and development of $1.1 million was reclassified to developed technology.