Restructuring - Summary of Restructuring and Related Costs (Detail) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
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| Restructuring Cost and Reserve [Line Items] | ||||
| Restructuring charges incurred during the period | [1] | $ 44,692 | ||
| One-time Termination Benefits [Member] | ||||
| Restructuring Cost and Reserve [Line Items] | ||||
| Restructuring charges incurred during the period | 4,633 | |||
| Amounts paid during the period | $ (1,053) | (3,580) | ||
| Balance, end of year | $ 1,053 | |||
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