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Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Sep. 30, 2021
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Marketable securities |  |
Cash, cash equivalents and marketable securities [Line Items] |  |
Amortized Cost | $ 25,956 | $ 23,836
Debt Securities, Trading, and Equity Securities, FV-NI | 24,515 | 31,884
Cash and Cash Equivalents |  |
Cash, cash equivalents and marketable securities [Line Items] |  |
Amortized Cost | 133,202 | 195,354
Debt Securities, Trading, and Equity Securities, FV-NI | 133,202 | 195,354
Cash and Cash Equivalents | Cash |  |
Cash, cash equivalents and marketable securities [Line Items] |  |
Amortized Cost | 113,888 | 195,160
Debt Securities, Trading, and Equity Securities, FV-NI | 113,888 | 195,160
Cash and Cash Equivalents | Money market funds |  |
Cash, cash equivalents and marketable securities [Line Items] |  |
Amortized Cost | 19,314 | 194
Debt Securities, Trading, and Equity Securities, FV-NI | $ 19,314 | $ 194

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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