Fair Value of Financial Instruments (Details) (7.5% senior notes, USD $)	Mar. 30, 2013	Dec. 29, 2012
Fair Value of Financial Instruments
Debt instrument, interest rate (as a percent)	7.50%	7.50%
Level one
Fair Value of Financial Instruments
Debt instrument, interest rate (as a percent)	7.50%	7.50%
Fair value of 7.5% senior notes	391,463,000

Interest rate stated in the contractual debt agreement.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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

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