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v3.23.1

Business Combinations and Divestitures - Additional Information (Detail) $ in Thousands |  | 6 Months Ended |
--- | --- | --- | ---
Oct. 25, 2022 USD ($) | Mar. 31, 2023 USD ($) PartnershipUnit | Mar. 31, 2022 USD ($) PartnershipUnit | Sep. 30, 2022 USD ($)
Business Acquisition [Line Items] |  |  |  |
Goodwill |  | $ 254,354 |  | $ 254,110
Heating Oil Dealers |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of businesses acquired | PartnershipUnit |  | 2 | 4 |
Aggregate purchase price partnership acquired |  | $ 1,200 | $ 7,400 |
Cash and assuming |  | 1,200 | 6,500 |
Liabilities |  |  | 900 |
Aggregate purchase price allocation, intangible assets |  | 1,700 | 4,900 |
Goodwill |  | 200 |  |
Aggregate purchase price allocation, fixed assets |  | 200 | 3,200 |
Gross purchase price increased (reduced) by working capital credits |  | $ 900 | $ 700 |
Cash proceeds from sale of assets | $ 2,200 |  |  |

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