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Supplemental Condensed Consolidating Guarantor Financial Statements (Details Textual)
6 Months Ended
Jul. 01, 2012
Eleven point three seven five senior secured notes [Member]
 
Supplemental condensed consolidating guarantor financial statement (Textual) [Abstract]  
Senior notes, interest rate 11.375%
Guarantor Subsidiaries due, year 2013
Seven point six two five senior notes [Member]
 
Supplemental condensed consolidating guarantor financial statement (Textual) [Abstract]  
Senior notes, interest rate 7.625%
Guarantor Subsidiaries due, year 2018