Fair Value Measurements (Details) (USD $)	Sep. 28, 2012	Dec. 30, 2011
Derivatives, Fair Value [Line Items]
Carrying value of long-term debt	$ 515,420,000	$ 507,988,000
Senior notes \| Senior Secured Notes (9.50%)
Derivatives, Fair Value [Line Items]
Carrying value of long-term debt	375,000,000	375,000,000
Fair Value, Inputs, Level 2 \| Senior notes \| Senior Secured Notes (9.50%)
Derivatives, Fair Value [Line Items]
Fair value of long-term debt	345,000,000
Fair Value, Measurements, Recurring \| Foreign Exchange Forward \| Fair Value, Inputs, Level 1
Derivatives, Fair Value [Line Items]
Foreign currency contract, asset, fair value disclosure		$ 600,000

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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 210.5-02.22)

-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 22

-Article 5

Name:	us-gaap_LongTermDebtNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant