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Goodwill and Intangible Assets, net (Tables)
6 Months Ended
Mar. 31, 2022
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, 2021

 

$

253,398

 

Fiscal year 2022 business combinations

 

 

1,444

 

Balance as of March 31, 2022

 

$

254,842

 

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, 2022

 

 

September 30, 2021

 

 

 

Gross

 

 

 

 

 

 

 

 

 

 

Gross

 

 

 

 

 

 

 

 

 

 

 

Carrying

 

 

Accum.

 

 

 

 

 

 

Carrying

 

 

Accum.

 

 

 

 

 

 

 

Amount

 

 

Amortization

 

 

Net

 

 

Amount

 

 

Amortization

 

 

Net

 

Customer lists

 

$

406,614

 

 

$

337,508

 

 

$

69,106

 

 

$

403,913

 

 

$

329,406

 

 

$

74,507

 

Trade names and other intangibles

 

 

41,300

 

 

 

20,805

 

 

 

20,495

 

 

 

40,548

 

 

 

19,581

 

 

 

20,967

 

Total

 

$

447,914

 

 

$

358,313

 

 

$

89,601

 

 

$

444,461

 

 

$

348,987

 

 

$

95,474