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Stock-Based Compensation - Restricted Stock Outstanding (Detail) (USD $)
3 Months Ended
Mar. 31, 2013
Apr. 01, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Granted, Shares 584,000 557,500
Restricted stock [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding, Shares, Beginning Balance 1,973,500  
Granted, Shares 584,000  
Vested, Shares 372,000  
Forfeited or canceled, Shares 475,500  
Outstanding, Shares, Ending Balance 1,710,000  
Outstanding, Weighted Average Grant Date Fair Value, Beginning Balance 14.79  
Granted, Weighted Average Grant Date Fair Value 16.06  
Vested, Weighted Average Grant Date Fair Value 14.63  
Forfeited or canceled, Weighted Average Grant Date Fair Value 14.04  
Outstanding, Weighted Average Grant Date Fair Value, Ending Balance 15.45