XML 44 R27.htm IDEA: XBRL DOCUMENT
v3.21.2

Summary of Significant Accounting Policies (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2021
Accounting Policies [Abstract] |
Periods of Expected Insurance Payments | Based on historical payment patterns, we expect payments of undiscounted ultimate losses to be made as follows:
Year Ending September 30: |  |  |
| 2022 |  | $ | 1,047
| 2023 |  |  | 714
| 2024 |  |  | 452
| 2025 |  |  | 285
| 2026 |  |  | 167
| Thereafter |  |  | 601
Total |  | $ | 3,266
Accounts Receivable, Allowance for Credit Loss [Table Text Block] | Activity in our allowance for credit losses consists of the following:
| Year Ended September 30,
| 2021 |  | 2020
Balance at beginning of period | $ | 2,613 |  |  | $ | 1,184 |
Additions to costs and expenses, inclusive of ASU 2016-13 adoption adjustment | 1,216 |  |  | 1,864 |
Deductions for uncollectible receivables written off, net of recoveries | (1,442) |  |  | (435) |
Balance at end of period | $ | 2,387 |  |  | $ | 2,613 |

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

X
- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
Name: | us-gaap_AccountsReceivableAllowanceForCreditLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the nature of the unusual risk or uncertainty, if estimable, such as the threat of expropriation of its assets by a foreign government, rapid technological obsolescence in the industry, risk of natural disaster from earthquake or weather events, and availability of or continuation of a labor force at a reasonable cost. + References No definition available. + Details
Name: | us-gaap_UnusualRisksAndUncertaintiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration