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Related Party Transactions (Details) (USD $)
3 Months Ended 1 Months Ended 3 Months Ended
Apr. 28, 2012
Marciano Trusts
lease
Apr. 30, 2011
Marciano Trusts
Apr. 28, 2012
MPM Financial
Apr. 30, 2011
MPM Financial
Jan. 28, 2012
Marciano Consulting Agreement
year
Apr. 28, 2012
Marciano Consulting Agreement
Related Party Transactions            
Number of leases under lease agreement 4          
Lease rent expense and property tax $ 1,500,000 $ 1,200,000        
Fees paid for aircraft facility     400,000 400,000    
Service term (in years)         30  
Term of consulting agreement (in years)         2  
Consulting fees per year under the consulting arrangement           500,000
Total expenses incurred related to consulting arrangements           $ 100,000