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Summary of Significant Accounting Policies - Valuation Allowance (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
Change in Valuation Allowance [Roll Forward] |  |  |
Balance at beginning of the year | $ 79,998 | $ 65,304 | $ 47,664
Charged to costs and expenses | 1,218 | 979 | 124
Changes in net loss carryforward and other | 4,768 | 13,715 | 17,516
Balance at end of the year | $ 85,984 | $ 79,998 | $ 65,304

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- Definition Deferred Tax Assets, Valuation Allowance, Charged (Credited) To Costs And Expenses + References No definition available. + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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