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Derivative Financial Instruments - Narrative (Details)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Jun. 27, 2021
USD ($)
Jun. 28, 2020
USD ($)
Jun. 27, 2021
USD ($)
Jun. 28, 2020
USD ($)
Sep. 30, 2018
agreement
Sep. 27, 2020
USD ($)
Derivative [Line Items]            
Gains (losses) on cash flow hedges recognized in comprehensive income $ 1,498 $ (30) $ 4,864 $ (5,726)    
Interest Rate Swap | Designated as cash flow hedges | Derivatives designated as hedging instruments            
Derivative [Line Items]            
Number of derivative agreements | agreement         5  
Notional amount $ 218,800   $ 218,800      
Fixed rate 2.79%   2.79%      
Loss to be reclassified during next twelve months $ 5,700   $ 5,700      
Interest Rate Swap | Designated as cash flow hedges | Derivatives designated as hedging instruments | Other current liabilities            
Derivative [Line Items]            
Fair value of interest rate swap agreements (10,600)   (10,600)     $ (15,500)
Interest Rate Swap 1 | Designated as cash flow hedges | Derivatives designated as hedging instruments            
Derivative [Line Items]            
Notional amount 43,800   43,800      
Interest Rate Swap 2 | Designated as cash flow hedges | Derivatives designated as hedging instruments            
Derivative [Line Items]            
Notional amount 43,800   43,800      
Interest Rate Swap 3 | Designated as cash flow hedges | Derivatives designated as hedging instruments            
Derivative [Line Items]            
Notional amount 43,800   43,800      
Interest Rate Swap 4 | Designated as cash flow hedges | Derivatives designated as hedging instruments            
Derivative [Line Items]            
Notional amount 43,800   43,800      
Interest Rate Swap 5 | Designated as cash flow hedges | Derivatives designated as hedging instruments            
Derivative [Line Items]            
Notional amount $ 43,800   $ 43,800