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Employee Benefit Plans (Net Periodic Benefit Cost For Defined Benefit Retirement Plan) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 29, 2012
Employee Benefit Plans [Abstract]      
Service cost $ 800 $ 690 $ 412
Interest cost 833 768 835
Expected return on plan assets (1,024) (690) (660)
Net amortization and deferral 463 520 77
Special termination benefits 26    
Net periodic benefit cost $ 1,098 $ 1,288 $ 664