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Stock-Based Compensation - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Unrecognized stock base compensation expense, options | $ 28,197 | $ 8,956 | $ 28,197 | $ 8,956
Unrecognized stock base compensation expense, RSU and RSA | $ 12,152 | 1,463 | $ 12,152 | 1,463
Reserved for future issuance (in shares) | 11,274,655 |  | 11,274,655 |
Stock compensation expense | $ 5,926 | $ 2,515 | $ 9,631 | $ 4,126
Stock option |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Unrecognized stock base compensation expense, period of recognition |  |  | 2 years 5 months 23 days | 2 years 3 months
RSU/RSA |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Unrecognized stock base compensation expense, period of recognition |  |  | 2 years 3 months 25 days | 2 years 3 days

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Amount of cost to be recognized for option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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