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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 ($) | 3 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |
Balance | $ 175,000 | $ 6,017,000
Fair value adjustments |  | (2,440,000)
Payment of contingent consideration | (175,000) | (807,000)
Balance | $ 0 | $ 2,770,000

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