Composition Of Certain Financial Statement Captions (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 25, 2015
Composition Of Certain Financial Statement Captions [Abstract]
Accrual for Unpaid, Property, Plant and Equipment Additions	$ 17,100	$ 20,500
Accrued royalties	1,939	1,951
Amounts payable to joint licensing program partners	34,472	40,466
Accrued compensation and benefits	71,261	70,317
Accrued professional fees	6,528	6,523
Other accrued liabilities	54,855	50,050
Accrued liabilities	$ 169,055	$ 169,307