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Subsequent Event - Additional Information (Detail) (USD $)
9 Months Ended 12 Months Ended 2 Months Ended 1 Months Ended 1 Months Ended
Sep. 29, 2013
Dec. 30, 2012
Sep. 23, 2012
Sep. 29, 2013
2013 Long-Term Incentive Plan [Member]
Oct. 24, 2013
Subsequent Event [Member]
Oct. 08, 2013
Subsequent Event [Member]
Oct. 09, 2013
Subsequent Event [Member]
2013 Long-Term Incentive Plan [Member]
Oct. 09, 2013
IPO [Member]
Subsequent Event [Member]
Oct. 09, 2013
IPO [Member]
Subsequent Event [Member]
Underwritten Public Offering [Member]
Oct. 09, 2013
IPO [Member]
Subsequent Event [Member]
Shareholders' Equity [Member]
Subsequent Event [Line Items]                    
Public offering shares of common stock               8,625,000 1,125,000  
Common stock issued, price per share               $ 14.00    
Share sold by company               8,474,869    
Share sold by stock holders through public offering                   150,131
Net proceeds from IPO               $ 108,800,000    
Cash dividend paid from proceeds from IPO 49,854,000           49,900,000        
Public offering proceeds used for repayments of debt         $ 14,000,000          
Number of shares available for grant 848,000 504,000   0     395,000      
Vesting period             4 years      
Fair value of option grant             $ 14.00      
Expected life of option             7 years      
Expected Volatility Rate             48.30%      
Risk free interest rate             2.01%      
Dividend yield             0.00%