Revenue - Deferred contract costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Deferred contract costs
Amortization period of capitalized contract costs	7 years
Beginning Balance	$ 103,099	$ 68,107
Capitalized Costs	82,422	53,733
Amortization	(27,478)	(18,741)
Ending Balance	158,043	103,099
Costs To Obtain A New Contract
Deferred contract costs
Beginning Balance	82,103	68,107
Capitalized Costs	53,529	30,994
Amortization	(22,057)	(16,998)
Ending Balance	113,575	82,103
Costs to Fulfill A Contract
Deferred contract costs
Beginning Balance	20,996
Capitalized Costs	28,893	22,739
Amortization	(5,421)	(1,743)
Ending Balance	$ 44,468	$ 20,996