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
Conversion of redeemable convertible preferred stock to common stock upon initial public offering	276,307	$ 1	276,306
Conversion of redeemable convertible preferred stock to common stock upon initial public offering, shares						(52,435)
Conversion of redeemable convertible preferred stock to common stock upon initial public offering						$ (276,307)
Conversion of redeemable convertible preferred stock to common stock upon initial public offering, shares		52,435
Reclassification of redeemable convertible preferred stock warrant liabilities to additional paid-in capital upon initial public offering	1,405		1,405
Issuance of common stock upon initial public offering, net of underwriting discounts and commissions and other offering costs	225,481		225,481
Issuance of common stock upon public offering, net of underwriting discounts and commissions and other offering costs, shares		11,297
Exercise of stock options	1,746		1,746
Exercise of stock options, shares		509
Exercise of stock warrants	144		144
Exercise of stock warrants, shares		65
Stock based compensation	10,436		10,436
Other comprehensive income (loss), net of tax	(1,320)			(1,320)
Net loss	(21,593)				(21,593)
Ending balance at Mar. 31, 2020	389,949	$ 2	530,190	(994)	(139,249)
Ending balance, shares at Mar. 31, 2020		72,460
Beginning balance at Dec. 31, 2019	393,352	$ 2	524,260	20	(130,930)
Beginning balance, shares at Dec. 31, 2019		72,267
Exercise of stock options	845		845
Exercise of stock options, shares		193
Stock based compensation	5,085		5,085
Other comprehensive income (loss), net of tax	(1,014)			(1,014)
Net loss	(8,319)				(8,319)
Ending balance at Mar. 31, 2020	389,949	$ 2	530,190	(994)	(139,249)
Ending balance, shares at Mar. 31, 2020		72,460
Beginning balance at Jun. 30, 2020	710,719	$ 2	857,044	2,420	(148,747)
Beginning balance, shares at Jun. 30, 2020		79,635
Equity component of the 2025 Notes,net of issuance costs and tax	245,066		245,066
Purchase of capped calls	(87,860)		(87,860)
Issuance of common stock upon exercise of stock options and release of restricted stock units	21,878		21,878
Issuance of common stock upon exercise of stock options and release of restricted stock units, shares		3,009
Issuance of common stock under the employee stock purchase plan	8,864		8,864
Issuance of common stock under the employee stock purchase plan, shares		446
Stock based compensation	31,263		31,263
Other comprehensive income (loss), net of tax	(2,611)			(2,611)
Net loss	(56,858)				(56,858)
Ending balance at Mar. 31, 2021	870,461	$ 2	1,076,255	(191)	(205,605)
Ending balance, shares at Mar. 31, 2021		83,090
Beginning balance at Dec. 31, 2020	876,748	$ 2	1,055,425	198	(178,877)
Beginning balance, shares at Dec. 31, 2020		82,114
Issuance of common stock upon exercise of stock options and release of restricted stock units	5,613		5,613
Issuance of common stock upon exercise of stock options and release of restricted stock units, shares		756
Issuance of common stock under the employee stock purchase plan	4,537		4,537
Issuance of common stock under the employee stock purchase plan, shares		220
Stock based compensation	10,680		10,680
Other comprehensive income (loss), net of tax	(389)			(389)
Net loss	(26,728)				(26,728)
Ending balance at Mar. 31, 2021	$ 870,461	$ 2	$ 1,076,255	$ (191)	$ (205,605)
Ending balance, shares at Mar. 31, 2021		83,090