Other Current And Noncurrent Assets (Schedule Of Other Current Assets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2014	Dec. 28, 2013
Other Current Assets [Line Items]
Other	$ 5,612	$ 6,078
Other current assets	63,364	65,331
Windward Prospects Ltd [Member]
Other Current Assets [Line Items]
Environmental indemnification receivable	$ 57,752	$ 59,253

Aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.8)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 8

-Article 5

Name:	us-gaap_OtherAssetsCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant