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Fair Value Measurements - Summary of Financial Assets that are Measured at Fair Value and Indicates the Fair Value Hierarchy of the Valuation Inputs (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Sep. 30, 2022
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Fair Value | $ 96,540 | $ 94,511
Cash and Cash Equivalents | 66,534 | 60,610
Marketable Securities | 27,337 | 31,901
Money Market Funds | Level 1 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Fair Value | 62,219 | 59,138
Cash and Cash Equivalents | 62,219 | 59,138
Government Securities | Level 1 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Fair Value | 6,132 | 4,892
Cash and Cash Equivalents | 299 |
Marketable Securities | 5,833 | 4,892
Government Securities | Level 2 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Fair Value | 6,080 | 2,361
Marketable Securities | 6,080 | 2,361
Time Deposits | Level 2 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Fair Value | 4,016 | 1,472
Cash and Cash Equivalents | 4,016 | 1,472
Commercial Paper | Level 2 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Fair Value | 1,982 | 7,647
Marketable Securities | 1,982 | 7,647
Corporate Debt Securities | Level 2 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Fair Value | 13,442 | 17,001
Marketable Securities | 13,442 | 17,001
Debt Securities | Level 2 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Fair Value | $ 2,669 | $ 2,000

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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