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Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Sep. 30, 2020
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Marketable securities |  |
Cash, cash equivalents and marketable securities [Line Items] |  |
Amortized Cost | $ 23,836 | $ 20,195
Debt Securities, Trading, and Equity Securities, FV-NI | 31,884 | 25,513
Cash and Cash Equivalents |  |
Cash, cash equivalents and marketable securities [Line Items] |  |
Amortized Cost | 195,354 | 157,394
Debt Securities, Trading, and Equity Securities, FV-NI | 195,354 | 157,394
Cash and Cash Equivalents | Cash |  |
Cash, cash equivalents and marketable securities [Line Items] |  |
Amortized Cost | 195,160 | 122,119
Debt Securities, Trading, and Equity Securities, FV-NI | 195,160 | 122,119
Cash and Cash Equivalents | Money market funds |  |
Cash, cash equivalents and marketable securities [Line Items] |  |
Amortized Cost | 194 | 35,275
Debt Securities, Trading, and Equity Securities, FV-NI | $ 194 | $ 35,275

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- Definition Cash, cash equivalents and marketable securities + References No definition available. + Details
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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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