Fair Value Measures - Summary of Financial Assets and Liabilities Measured at Fair Value (Details) - Reported Value Measurement - USD ($) $ in Thousands	Dec. 31, 2023	Sep. 30, 2023
Assets:
Investment in Equity Securities	$ 214	$ 326
Liabilities:
Contingent Consideration	20,565	21,181
Level 1
Assets:
Investment in Equity Securities	214	326
Liabilities:
Contingent Consideration	0	0
Level 2
Assets:
Investment in Equity Securities	0	0
Liabilities:
Contingent Consideration	0	0
Level 3
Assets:
Investment in Equity Securities	0	0
Liabilities:
Contingent Consideration	$ 20,565	$ 21,181