CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Redeemable Convertible Preferred Stock
Beginning balance at Jun. 30, 2019	$ (102,657)	$ 1	$ 14,672	$ 326	$ (117,656)
Beginning balance, shares at Jun. 30, 2019		8,154
Beginning balance at Jun. 30, 2019						$ 276,307
Beginning balance, shares at Jun. 30, 2019						52,435
Issuance of common stock upon exercise of stock options	294		294
Issuance of common stock upon exercise of stock options, shares		142
Stock-based compensation	2,276		2,276
Other comprehensive income (loss), net of tax	(198)			(198)
Net loss	(5,696)				(5,696)
Ending balance at Sep. 30, 2019	(105,981)	$ 1	17,242	128	(123,352)
Ending balance, shares at Sep. 30, 2019		8,296
Ending balance, shares at Sep. 30, 2019						52,435
Ending balance at Sep. 30, 2019						$ 276,307
Beginning balance at Jun. 30, 2020	710,719	$ 2	857,044	2,420	(148,747)
Beginning balance, shares at Jun. 30, 2020		79,635
Issuance of common stock upon exercise of stock options and release of restricted stock units	8,081		8,081
Issuance of common stock upon exercise of stock options and release of restricted stock units, shares		1,164
Issuance of common stock under the employee stock purchase plan	4,327		4,327
Issuance of common stock under the employee stock purchase plan, shares		226
Stock-based compensation	9,894		9,894
Other comprehensive income (loss), net of tax	(1,302)			(1,302)
Net loss	(12,951)				(12,951)
Ending balance at Sep. 30, 2020	$ 718,768	$ 2	$ 879,346	$ 1,118	$ (161,698)
Ending balance, shares at Sep. 30, 2020		81,025