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Commitments and Contingencies (Tables)
12 Months Ended
Sep. 30, 2017
Commitments And Contingencies Disclosure [Abstract]  
Summary of Future Minimum Lease Payments Under Non-cancelable Operating Leases

Future minimum lease payments under non-cancelable operating leases as of September 30, 2017, were as follows:

 

 

(Amounts

in thousands)

 

2018

 

7,637

 

2019

 

7,057

 

2020

 

7,069

 

2021

 

6,365

 

2022

 

5,264

 

Thereafter

 

34,069

 

Total

$

67,461