Business Combination (Schedule of Identifiable Intangible Assets Acquired as Part of Acquisition) (Details) - Aerohive Networks, Inc. $ in Thousands	6 Months Ended
	Dec. 31, 2019 USD ($)
Acquired Finite Lived Intangible Assets [Line Items]
Amount	$ 53,400
Developed technology
Acquired Finite Lived Intangible Assets [Line Items]
Amount	$ 40,000
Estimated Useful Life (in years)	4 years
Backlog
Acquired Finite Lived Intangible Assets [Line Items]
Amount	$ 400
Estimated Useful Life (in years)	1 year
Customer relationships
Acquired Finite Lived Intangible Assets [Line Items]
Amount	$ 11,400
Estimated Useful Life (in years)	7 years
Trade names
Acquired Finite Lived Intangible Assets [Line Items]
Amount	$ 1,600
Estimated Useful Life (in years)	1 year