Retirement Plans - Pension Plan's Assets at Fair Value (Details) (Pension Plan [Member], USD $)	Sep. 29, 2013		Sep. 30, 2012	Sep. 25, 2011
Asset category:
Pension Plan's assets at fair value Total	$ 89,335,000		$ 78,306,000	$ 61,887,000
Fixed Income [Member]
Asset category:
Pension Plan's assets at fair value Total	48,979,000		45,394,000
Equity [Member]
Asset category:
Pension Plan's assets at fair value Total	35,313,000	[1]	25,802,000
Cash in transit for the purchase of equity securities	22,800,000
Cash [Member]
Asset category:
Pension Plan's assets at fair value Total	5,043,000		7,110,000
Level 1 [Member]
Asset category:
Pension Plan's assets at fair value Total	50,165,000		16,464,000
Level 1 [Member] | Fixed Income [Member]
Asset category:
Pension Plan's assets at fair value Total	9,809,000		9,354,000
Level 1 [Member] | Equity [Member]
Asset category:
Pension Plan's assets at fair value Total	35,313,000	[1]	0
Level 1 [Member] | Cash [Member]
Asset category:
Pension Plan's assets at fair value Total	5,043,000		7,110,000
Level 2 [Member]
Asset category:
Pension Plan's assets at fair value Total	39,170,000		61,842,000
Level 2 [Member] | Fixed Income [Member]
Asset category:
Pension Plan's assets at fair value Total	39,170,000		36,040,000
Level 2 [Member] | Equity [Member]
Asset category:
Pension Plan's assets at fair value Total	0	[1]	25,802,000
Level 2 [Member] | Cash [Member]
Asset category:
Pension Plan's assets at fair value Total	0		0
Level 3 [Member]
Asset category:
Pension Plan's assets at fair value Total	0		0
Level 3 [Member] | Fixed Income [Member]
Asset category:
Pension Plan's assets at fair value Total	0		0
Level 3 [Member] | Equity [Member]
Asset category:
Pension Plan's assets at fair value Total	0	[1]	0
Level 3 [Member] | Cash [Member]
Asset category:
Pension Plan's assets at fair value Total	$ 0		$ 0

[1] Includes $22.8 million of cash in transit for the purchase of equity securities.