Stockholders' Equity - Summary of Stock Based Compensation Expense from Stock Options, RSUs and ESPP (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based Compensation	$ 18,064	$ 4,082	$ 1,545
Cost of Revenue
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based Compensation	1,257	331	78
Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based Compensation	5,495	1,128	429
Sales and Marketing
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based Compensation	2,777	922	508
General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based Compensation	$ 8,535	$ 1,701	$ 530