Annual report pursuant to Section 13 and 15(d)

Accounts Receivable, Net

v3.21.2
Accounts Receivable, Net
 12 Months Ended
Sep. 30, 2021
Receivables [Abstract]  
Accounts Receivable, Net ACCOUNTS RECEIVABLE, NET
Table 16.1: Details of Accounts Receivable, Net
As of September 30,
2021 2020
(in thousands)
Billed and billable receivables $ 718,728  $ 628,922 
Unbilled receivables 124,135  163,332 
Allowance for credit losses (8,044) (6,051)
Accounts receivable, net $ 834,819  $ 786,203 
Table 16.2: Changes in Allowance for Credit Losses
For the Year Ended September 30,
2021 2020 2019
(in thousands)
Balance at beginning of period $ 6,051  $ 5,382  $ 4,285 
Provision for estimated credit losses 11,038  12,976  4,018 
Write-offs, net of recoveries (9,045) (12,307) (2,921)
Balance at end of period $ 8,044  $ 6,051  $ 5,382