CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jan. 23, 2021	Jan. 25, 2020	Jan. 23, 2021	Jan. 25, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Tax expense (benefit) on unrealized losses on interest rate swaps	$ 218		$ 479
Tax of amortization of pension actuarial loss	$ 45	$ 44	$ 91	$ 88
Tax on pension settlement loss		375		375
Tax (expense) benefit on pension remeasurement		$ 303		$ 303

No definition available.

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Amount of tax expense (benefit) for increase (decrease) to other comprehensive income from settlement and curtailment gain (loss) of defined benefit plan.

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Amount, after reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.

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Amount, before reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income for defined benefit plan.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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