Goodwill and Intangibles, net (Tables)

9 Months Ended

Jun. 30, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Changes in the Company's Goodwill

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

Balance as of September 30, 2017	$	225,915
Fiscal year 2018 business combinations		2,416
Balance as of June 30, 2018	$	228,331

Intangible Assets Subject to Amortization

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

	June 30, 2018						September 30, 2017
	Gross						Gross
	Carrying		Accum.				Carrying		Accum.
	Amount		Amortization		Net		Amount		Amortization		Net
Customer lists	$	356,437	$	276,075	$	80,362	$	346,784	$	264,632	$	82,152
Trade names and other intangibles		32,528		12,031		20,497		32,047		8,981		23,066
Total	$	388,965	$	288,106	$	100,859	$	378,831	$	273,613	$	105,218