Leases (Summary of Activity and Other Information Relating to Operating Leases) (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease costs	$ 5,002	$ 10,003
Cash paid for amounts included in the measurement of operating liabilities	5,346	10,831
ROU assets obtained for new lease obligations	$ 1,357	1,422
ROU assets obtained from Aerohive business combination		$ 6,336
Weighted average remaining lease term (in years)	4 years 8 months 12 days	4 years 8 months 12 days
Weighted Average Discount Rate	4.50%	4.50%