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Fair Value of Financial Instruments - Changes in Fair Value of Company Level 3 Financial Instruments (Details) - Nonrecurring - Significant Unobservable (Level 3) - USD ($) $ in Thousands | 3 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |
Balance | $ 6,017 | $ 10,962
Fair value adjustments | (2,440) | (697)
Payment of contingent consideration | (807) |
Balance | $ 2,770 | $ 10,265

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- Definition Fair value measurement with unobservable inputs reconciliation nonrecurring basis liability fair value adjustments. + References No definition available. + Details
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- Definition Fair value measurement with unobservable inputs reconciliation nonrecurring basis liability payment of contingent consideration. + References No definition available. + Details
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