Common Stock - Additional Information (Detail) |
12 Months Ended |
|---|---|
Mar. 31, 2021 | |
| Common Class A | |
| Class of Stock [Line Items] | |
| Common stock, Voting rights | one |
| Common Class B | |
| Class of Stock [Line Items] | |
| Common stock, Voting rights | ten |
| Common Class C [Member] | |
| Class of Stock [Line Items] | |
| Common stock, Voting rights | no |