Investments - Summary of Fair Value Measurement Inputs and Valuation Techniques (Details) $ in Thousands	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Weighted-average cost of capital
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business combination, contingent consideration, liability, measurement input	0.1480	0.1140
Revenue weight-average cost of capital
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business combination, contingent consideration, liability, measurement input	0.0440	0.0290
Revenue volatility
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business combination, contingent consideration, liability, measurement input	0.20	0.20
Contingent Consideration
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related contingent consideration	$ 5,920	$ 16,770