Leases (Summary of Activity and Other Information Relating to Operating Leases) (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2020 USD ($)
Leases [Abstract]
Operating lease costs	$ 19,600
Variable lease costs	6,176
Cash paid for amounts included in the measurement of operating liabilities	21,064
ROU assets obtained for new lease obligations	3,779
ROU assets obtained from Aerohive business combination	$ 6,336
Weighted average remaining lease term (in years)	4 years 3 months 18 days
Weighted Average Discount Rate	4.50%