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Equity-Based Compensation (Details 3) (USD $)
6 Months Ended
Jul. 01, 2012
$ 7.70 - 11.11 [Member]
 
Summarizes information about stock options  
Number Outstanding And Exercisable 450,350
Weighted Average Remaining Contractual Life (Years) 1 year 5 months 23 days
Weighted Average Exercise Price $ 9.81
$ 7.70 - 11.11 [Member] | Maximum [Member]
 
Summarizes information about stock options  
Range of Exercise Prices, Upper Range Limit $ 11.11
$ 7.70 - 11.11 [Member] | Minimum [Member]
 
Summarizes information about stock options  
Range of Exercise Prices, Lower Range Limit $ 7.7
$ 13.68 - 16.24 [Member]
 
Summarizes information about stock options  
Number Outstanding And Exercisable 101,800
Weighted Average Remaining Contractual Life (Years) 3 years 4 months 2 days
Weighted Average Exercise Price $ 13.93
$ 13.68 - 16.24 [Member] | Maximum [Member]
 
Summarizes information about stock options  
Range of Exercise Prices, Upper Range Limit $ 16.24
$ 13.68 - 16.24 [Member] | Minimum [Member]
 
Summarizes information about stock options  
Range of Exercise Prices, Lower Range Limit $ 13.68