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Share-based Compensation - Summary of Nonvested Share Awards Activity (Detail) (Nonvested Share Awards [Member], USD $)
3 Months Ended
Mar. 30, 2014
Mar. 31, 2013
Nonvested Share Awards [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Nonvested Shares, beginning balance 333,770  
Granted, Shares 146,920 121,020
Vested, Shares (131,615)  
Forfeited, Shares (280)  
Nonvested Shares, ending balance 348,795  
Weighted-Average Grant-Date Fair Value, Beginning Balance $ 12.38  
Weighted-Average Grant-Date Fair Value, Granted $ 15.27  
Weighted-Average Grant-Date Fair Value, Vested $ 12.64  
Weighted-Average Grant-Date Fair Value, Forfeited $ 15.32  
Weighted-Average Grant-Date Fair Value, Ending Balance $ 13.50