Net Loss Per Share Attributable to Common Stockholders - Summary of Computation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (Detail) - USD ($)
$ / shares in Units, $ in Thousands |
12 Months Ended |
Mar. 31, 2021 |
Mar. 31, 2020 |
Mar. 31, 2019 |
| Numerator |
|
|
|
| Net loss attributable to common stockholders |
$ (183,619)
|
$ (250,863)
|
$ (183,533)
|
| Denominator |
|
|
|
| Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted |
43,449,826
|
38,453,767
|
34,482,458
|
| Net loss per share attributable to common stockholders, basic and diluted |
$ (4.23)
|
$ (6.52)
|
$ (5.32)
|
| Common Class A [Member] |
|
|
|
| Numerator |
|
|
|
| Net loss attributable to common stockholders |
$ (37,070)
|
$ (49,094)
|
$ (28,592)
|
| Denominator |
|
|
|
| Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted |
8,771,824
|
7,525,465
|
5,371,951
|
| Net loss per share attributable to common stockholders, basic and diluted |
$ (4.23)
|
$ (6.52)
|
$ (5.32)
|
| Common Class B [Member] |
|
|
|
| Numerator |
|
|
|
| Net loss attributable to common stockholders |
$ (146,549)
|
$ (201,769)
|
$ (154,941)
|
| Denominator |
|
|
|
| Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted |
34,678,002
|
30,928,302
|
29,110,507
|
| Net loss per share attributable to common stockholders, basic and diluted |
$ (4.23)
|
$ (6.52)
|
$ (5.32)
|