Goodwill and Other Intangible Assets

12 Months Ended

Sep. 30, 2020

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

11) Goodwill and Other Intangible Assets

Goodwill

A summary of changes in the Company’s goodwill during the fiscal years ended September 30, 2020 and 2019 are as follows (in thousands):

Balance as of September 30, 2018	$	228,436
Fiscal year 2019 business combinations		16,138
Balance as of September 30, 2019		244,574
Fiscal year 2020 business combinations	184
Goodwill included within assets held for sale		(4,431	)
Balance as of September 30, 2020	$	240,327

Intangibles, net

Intangible assets subject to amortization consist of the following (in thousands):

	September 30,
	2020						2019
	Gross						Gross
	Carrying		Accum.				Carrying		Accum.
	Amount		Amortization		Net		Amount		Amortization		Net
Customer lists	$	382,942	$	312,928	$	70,014	$	382,373	$	297,221	$	85,152
Trade names and other intangibles		37,382		17,103		20,279		37,739		15,203		22,536
Total	$	420,324	$	330,031	$	90,293	$	420,112	$	312,424	$	107,688

Amortization expense for intangible assets was $19.6 million, $19.4 million, and $19.6 million, for the fiscal years ended September 30, 2020, 2019, and 2018, respectively. Total estimated annual amortization expense related to intangible assets subject to amortization, for the year ended September 30, 2021 and the four succeeding fiscal years ended September 30, is as follows (in thousands):

	Amount
2021	$	17,376
2022	$	15,318
2023	$	13,705
2024	$	11,351
2025	$	9,076