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Employee Benefit Plans (Schedule Of Costs For The Retirement Benefit Plan) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 02, 2016
Mar. 28, 2015
Apr. 02, 2016
Mar. 28, 2015
Employee Benefit Plans [Abstract]        
Service cost $ 243 $ 212 $ 482 $ 445
Interest cost 152 157 302 329
Expected return on plan assets (257) (249) (510) (522)
Net amortization and deferral 146 123 290 259
Net periodic benefit cost $ 284 $ 243 $ 564 $ 511