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Revenue Recognition (Tables) | 6 Months Ended
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Mar. 31, 2024
Revenue from Contract with Customer [Abstract] |
Summary of Disaggregation of Revenue by Major Sources | The following disaggregates our revenue by major sources for the three and six months ended March 31, 2024 and March 31, 2023:
|  | Three Months Ended March 31, |  |  | Six Months Ended March 31, |
(in thousands) |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Petroleum Products: |  |  |  |  |  |  |  |  |  |  |  |
Home heating oil and propane |  | $ | 508,155 |  |  | $ | 566,457 |  |  | $ | 859,369 |  |  | $ | 1,001,980 |
Other petroleum products |  |  | 87,143 |  |  |  | 102,755 |  |  |  | 184,479 |  |  |  | 237,161 |
Total petroleum products |  |  | 595,298 |  |  |  | 669,212 |  |  |  | 1,043,848 |  |  |  | 1,239,141 |
Installations and Services: |  |  |  |  |  |  |  |  |  |  |  |
Equipment installations |  |  | 26,224 |  |  |  | 25,208 |  |  |  | 60,539 |  |  |  | 57,997 |
Equipment maintenance service contracts |  |  | 29,386 |  |  |  | 28,961 |  |  |  | 58,302 |  |  |  | 57,677 |
Billable call services |  |  | 15,124 |  |  |  | 14,236 |  |  |  | 31,439 |  |  |  | 30,989 |
Total installations and services |  |  | 70,734 |  |  |  | 68,405 |  |  |  | 150,280 |  |  |  | 146,663 |
Total Sales |  | $ | 666,032 |  |  | $ | 737,617 |  |  | $ | 1,194,128 |  |  | $ | 1,385,804 |
Summary of Changes in Allowance for Credit Losses | Changes in the allowance for credit losses are as follows:
(in thousands) | Credit Loss Allowance |
Balance at September 30, 2023 | $ | 8,375 |
Current period provision |  | 3,672 |
Write-offs, net and other |  | (3,151 | )
Balance as of March 31, 2024 | $ | 8,896 |

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