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Investments in and Acquisition of Businesses - Additional Information (Details) - USD ($) $ in Thousands |  | 9 Months Ended |
--- | --- | --- | ---
Nov. 12, 2020 | Jun. 26, 2021 | Jun. 27, 2020 | Sep. 17, 2020
Business Acquisition [Line Items] |  |  |  |
Cash paid to acquire business |  | $ 8,316 | $ 21,971 |
Percentage of voting interests acquired |  |  |  | 39.00%
Propane Retailer Headquartered In North Carolina [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business acquisition, cost of acquired, cash paid | $ 7,685 |  |  |
Cash paid to acquire business |  | $ 6,588 |  |
Propane Retailer Headquartered In North Carolina [Member] | Non-compete Agreements [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business acquisition, cost of acquired, cash paid | $ 1,250 |  |  |

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