v3.22.4
Amounts Reclassified Out of Accumulated Other Comprehensive Income - Reclassification out of accumulated other comprehensive income (loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 24, 2022
Dec. 25, 2021
Accumulated Other Comprehensive Income Loss [Line Items]    
Balance beginning $ (12,596) $ (17,584)
Reclassifications to earnings 164 294
Other comprehensive income 164 294
Balance ending (12,432) (17,290)
Pension Benefits [Member]    
Accumulated Other Comprehensive Income Loss [Line Items]    
Balance beginning (17,797) (23,303)
Reclassifications to earnings [1] 482 599
Other comprehensive income 482 599
Balance ending (17,315) (22,704)
Post-Retirement Benefits [Member]    
Accumulated Other Comprehensive Income Loss [Line Items]    
Balance beginning 5,201 5,719
Other comprehensive income (318) (305)
Balance ending 4,883 5,414
Accumulated Defined Benefit Plans Adjustment Net Prior Service Cost Credit Member    
Accumulated Other Comprehensive Income Loss [Line Items]    
Amortization of net gain and prior service credits [1] $ (318) $ 305
[1] These amounts are included in the computation of net periodic benefit cost. See Note 15, “Pension Plans and Other Postretirement Benefits.”