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Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
Business Acquisition [Line Items] |  |  |  |
Goodwill |  | $ 700,640 | $ 705,593 | $ 663,936
Estimated tax-deductible goodwill |  | $ 101,499 | 110,063 |
Measurement period adjustments |  |  | 2,996 |
NorthStar |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to acquire businesses | $ 77,777 |  |  |
Debt assumed | 107,018 |  |  |
Goodwill | 76,784 |  |  |
Measurement period adjustments |  |  | $ 2,996 |
NorthStar | Developed Technology Rights |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired intangible assets | $ 19,000 |  |  |
Estimated useful lives of finite-lived assets | 10 years |  |  |
NorthStar | Trademarks |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired intangible assets | $ 6,000 |  |  |
Estimated useful lives of finite-lived assets | 5 years |  |  |
Estimated tax-deductible goodwill | $ 68,522 |  |  |
NorthStar | Customer relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquired intangible assets | $ 9,000 |  |  |
Minimum |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful lives of finite-lived assets |  | 3 years |  |
Minimum | NorthStar | Customer relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful lives of finite-lived assets | 15 years |  |  |
Maximum |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful lives of finite-lived assets |  | 20 years |  |
Maximum | NorthStar | Customer relationships |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful lives of finite-lived assets | 18 years |  |  |

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