Impairment of Long-Lived Assets Impairment of Long-Lived Assets Held-for-sale (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Jun. 29, 2014	Sep. 28, 2014	Sep. 29, 2013	Dec. 29, 2013
Long Lived Assets Held-for-sale [Line Items]
Impairment of long-lived assets	$ 3,408	$ 5,327		$ 3,740	$ 5,327
Gain (Loss) on Disposition of Assets				13,602	4,771
Properties and Other Intangible Assets, Surplus Properties and Non-SO Held-for-sale [Member] [Member]
Long Lived Assets Held-for-sale [Line Items]
Impairment of long-lived assets	1,131			1,463	500	1,458
Aircraft [Member]
Long Lived Assets Held-for-sale [Line Items]
Impairment of long-lived assets	0	4,827		0	4,827	5,327
Gain (Loss) on Disposition of Assets			$ (261)