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Share-Based Compensation (Total Fair Value of Shares Vested) (Details) (Predecessor [Member], USD $)
In Thousands, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 28, 2012
Dec. 31, 2011
Predecessor [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total fair value of shares vested $ 3,125 $ 4,186