Revenue - Deferred contract costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Deferred contract costs
Amortization period of capitalized contract costs	7 years		7 years
Beginning Balance	$ 168,452	$ 113,086	$ 158,043	$ 103,099
Capitalized Costs	22,214	18,900	41,215	34,751
Amortization	(9,192)	(6,453)	(17,784)	(12,317)
Ending Balance	181,474	125,533	181,474	125,533
Costs to obtain a new contract
Deferred contract costs
Beginning Balance	118,644	86,688	113,575	82,103
Capitalized Costs	14,071	11,401	25,711	20,886
Amortization	(6,898)	(5,241)	(13,469)	(10,141)
Ending Balance	125,817	92,848	125,817	92,848
Costs to fulfill a contract
Deferred contract costs
Beginning Balance	49,808	26,398	44,468	20,996
Capitalized Costs	8,143	7,499	15,504	13,865
Amortization	(2,294)	(1,212)	(4,315)	(2,176)
Ending Balance	$ 55,657	$ 32,685	$ 55,657	$ 32,685