Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Narrative) (Detail)

v2.4.0.6
Long-Term Debt (Narrative) (Detail) (USD $)
9 Months Ended
Sep. 23, 2012
Sep. 25, 2011
Line of Credit Facility [Line Items]    
Credit facility amendment date Mar. 21, 2012  
Advisory agreement termination fee $ 2,000,000  
Estimated fees and expenses 575  
Proceeds from loan allocated to repurchase shares 22,474,000  
Share repurchase, shares 1,655,662  
Stock repurchase closing date Apr. 06, 2012  
Repayment of credit facilities 77,006,000 28,330,000
Unamortized loan origination fee expense related to long term debt 1,581,000  
Remaining loan origination cost to be amortized 100,000  
Minimum [Member]
   
Line of Credit Facility [Line Items]    
Quarterly principal payment 131  
Maximum [Member]
   
Line of Credit Facility [Line Items]    
Quarterly principal payment 194  
IPO [Member]
   
Line of Credit Facility [Line Items]    
Repayment of credit facilities 79,400,000  
Term A Loan [Member]
   
Line of Credit Facility [Line Items]    
Additional draw on loan 25,000  
Term A Loan [Member] | Pre Amended Line Of Credit [Member] | Minimum [Member]
   
Line of Credit Facility [Line Items]    
Outstanding principal amount 52,369  
Term A Loan [Member] | Amended Line Of Credit [Member] | Maximum [Member]
   
Line of Credit Facility [Line Items]    
Outstanding principal amount $ 77,369