Fair Value Measures - Summary of Financial Assets and Liabilities Measured at Fair Value (Details) - Reported Value Measurement - USD ($) $ in Thousands	Mar. 31, 2026	Sep. 30, 2025
Assets:
Investment in equity securities	$ 6	$ 67
Derivative and hedging instruments	729	532
Liabilities:
Contingent consideration	1,000	6,684
Derivative and hedging instruments		1,448
Level 1
Assets:
Investment in equity securities	6	67
Derivative and hedging instruments	0	0
Liabilities:
Contingent consideration	0	0
Derivative and hedging instruments		0
Level 2
Assets:
Investment in equity securities	0	0
Derivative and hedging instruments	729	532
Liabilities:
Contingent consideration	0	0
Derivative and hedging instruments		1,448
Level 3
Assets:
Investment in equity securities	0	0
Derivative and hedging instruments	0	0
Liabilities:
Contingent consideration	$ 1,000	6,684
Derivative and hedging instruments		$ 0