Goodwill and Intangible Assets, net (Tables)

6 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes in Company's Goodwill

A summary of changes in Company’s goodwill is as follows (in thousands):

Balance as of September 30, 2022	$	254,110
Fiscal year 2023 business combinations		244
Balance as of March 31, 2023	$	254,354

Intangible Assets Subject to Amortization

The gross carrying amount and accumulated amortization of intangible assets subject to amortization are as follows (in thousands):

	March 31, 2023						September 30, 2022
	Gross						Gross
	Carrying		Accum.				Carrying		Accum.
	Amount		Amortization		Net		Amount		Amortization		Net
Customer lists	$	409,679	$	351,123	$	58,556	$	409,980	$	345,237	$	64,743
Trade names and other intangibles		41,515		22,533		18,982		41,736		21,969		19,767
Total	$	451,194	$	373,656	$	77,538	$	451,716	$	367,206	$	84,510