Disaggregation of Revenue - Additional Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
---|---|---|---|---|---|
Mar. 28, 2020 |
Mar. 30, 2019 |
Mar. 28, 2020 |
Mar. 30, 2019 |
Sep. 28, 2019 |
|
Disaggregation Of Revenue [Line Items] | |||||
Contract with customer, liability revenue recognized | $ 24,920 | $ 25,988 | $ 57,596 | $ 59,146 | |
Contract assets | $ 19,285 | $ 19,285 | $ 7,051 | ||
Propane [Member] | |||||
Disaggregation Of Revenue [Line Items] | |||||
Segment reporting, percentage of revenue | 85.00% | 85.00% | 85.00% | 85.00% | |
Fuel Oil and Refined Fuels [Member] | |||||
Disaggregation Of Revenue [Line Items] | |||||
Segment reporting, percentage of revenue | 8.00% | 8.00% | 8.00% | 8.00% | |
Natural Gas and Electricity [Member] | |||||
Disaggregation Of Revenue [Line Items] | |||||
Segment reporting, percentage of revenue | 3.00% | 3.00% | 3.00% | 3.00% |