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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 |  |  |

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