XML 41 R31.htm IDEA: XBRL DOCUMENT v3.8.0.1
Pension, Postretirement, and Postemployement Obligations (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 24, 2017
Dec. 25, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Defined Benefit Plan, Plan Assets, Contributions by Employer 4940  
Pension Plans, Defined Benefit [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Defined Benefit Plan, Service Cost $ 12 $ 21
Defined Benefit Plan, Interest Cost 1,438 1,349
Defined Benefit Plan, Expected Return (Loss) on Plan Assets (1,983) (1,969)
Defined Benefit Plan, Amortization of Gain (Loss) (506) (736)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) (34) (34)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) (61) 103
Other Postretirement Benefit Plans, Defined Benefit [Member]    
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]    
Defined Benefit Plan, Service Cost 0 3
Defined Benefit Plan, Interest Cost 91 122
Defined Benefit Plan, Expected Return (Loss) on Plan Assets (270) (264)
Defined Benefit Plan, Amortization of Gain (Loss) (246) (237)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) (196) (365)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) $ (621) $ (741)