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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