Net Loss Per Share - Schedule of Basic And Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net loss attributable to common stockholders	$ (42,026)	$ (35,770)
Denominator:
Weighted-average shares used to compute net loss per share, basic and diluted	168,191,762	93,577,307
Net loss per share:
Net loss per share, basic and diluted	$ (0.25)	$ (0.38)
Class A Common Stock [Member]
Numerator:
Net loss attributable to common stockholders	$ (7,945)	$ (7,569)
Denominator:
Weighted-average shares used to compute net loss per share, basic and diluted	31,797,184	19,800,551
Net loss per share:
Net loss per share, basic and diluted	$ (0.25)	$ (0.38)
Class B Common Stock [Member]
Numerator:
Net loss attributable to common stockholders	$ (34,081)	$ (28,201)
Denominator:
Weighted-average shares used to compute net loss per share, basic and diluted	136,394,578	73,776,756
Net loss per share:
Net loss per share, basic and diluted	$ (0.25)	$ (0.38)