Business Combinations (Schedule of Identifiable Intangible Assets Acquired as Part of Acquisition) (Details) - Aerohive Networks, Inc. $ in Thousands	12 Months Ended
	Jun. 30, 2020 USD ($)
Acquired Finite Lived Intangible Assets [Line Items]
Amount	$ 52,500
Developed technology
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful Life (in years)	4 years
Amount	$ 39,100
Backlog
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful Life (in years)	1 year
Amount	$ 400
Customer relationships
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful Life (in years)	7 years
Amount	$ 11,400
Trade names
Acquired Finite Lived Intangible Assets [Line Items]
Estimated Useful Life (in years)	1 year
Amount	$ 1,600