Revenue - Deferred contract costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Deferred contract costs
Amortization period of capitalized contract costs	7 years		7 years
Beginning Balance	$ 125,533	$ 82,263	$ 103,099	$ 68,107
Capitalized Costs	22,624	16,127	57,375	38,723
Amortization	(7,229)	(4,924)	(19,546)	(13,364)
Ending Balance	140,928	93,466	140,928	93,466
Costs To Obtain A New Contract
Deferred contract costs
Beginning Balance	92,848	71,476	82,103	68,107
Capitalized Costs	15,141	10,544	36,027	21,890
Amortization	(5,738)	(4,386)	(15,879)	(12,363)
Ending Balance	102,251	77,634	102,251	77,634
Costs to Fulfill A Contract
Deferred contract costs
Beginning Balance	32,685	10,787	20,996
Capitalized Costs	7,483	5,583	21,348	16,833
Amortization	(1,491)	(538)	(3,667)	(1,001)
Ending Balance	$ 38,677	$ 15,832	$ 38,677	$ 15,832