Disaggregation of Revenue - Additional Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Jun. 27, 2026 |
Jun. 28, 2025 |
Jun. 27, 2026 |
Jun. 28, 2025 |
Sep. 27, 2025 |
|
| Disaggregation Of Revenue [Line Items] | |||||
| Contract with customer, liability revenue recognized | $ 7,786 | $ 8,929 | $ 80,840 | $ 86,084 | |
| Contract assets | $ 12,483 | $ 12,483 | $ 5,806 | ||
| Propane [Member] | |||||
| Disaggregation Of Revenue [Line Items] | |||||
| Segment reporting, percentage of revenue | 88.00% | 88.00% | 88.00% | 88.00% | |
| Fuel Oil and Refined Fuels [Member] | |||||
| Disaggregation Of Revenue [Line Items] | |||||
| Segment reporting, percentage of revenue | 5.00% | 5.00% | 5.00% | 5.00% | |
| Natural Gas and Electricity [Member] | |||||
| Disaggregation Of Revenue [Line Items] | |||||
| Segment reporting, percentage of revenue | 2.00% | 2.00% | 2.00% | 2.00% | |