XML 37 R23.htm IDEA: XBRL DOCUMENT
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 |

X
- Definition The entire disclosure for accounts receivable, contract receivable, receivable held-for-sale, and nontrade receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -URI http://asc.fasb.org/topic&trid=2196771 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -URI http://asc.fasb.org/topic&trid=82887179 + Details
Name: | us-gaap_AccountsAndNontradeReceivableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ReceivablesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration