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Retirement Benefit Plan (Schedule Of Costs For The Retirement Benefit Plan) (Details) - USD ($)
$ in Thousands
3 Months Ended
Jan. 02, 2016
Dec. 27, 2014
Retirement Benefit Plan [Abstract]    
Service cost $ 239 $ 233
Interest cost 150 172
Expected return on plan assets (253) (273)
Net amortization and deferral 144 136
Net periodic benefit cost $ 280 $ 268