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Note Receivable and Revolving Line of Credit Issued - Additional Information (Detail) (USD $)
 12 Months Ended
Jan. 31, 2014
Installment
Jan. 30, 2012
Credit Facilities [Line Items]    
Net sales price   $ 1,000,000
Promissory note interest rate 3.75%  
Interest commencement date Jan. 30, 2013  
Interest installments 16  
Promissory note outstanding 690,000  
Revolving line of credit 600,000  
Extended revolving line of credit $ 240,000  
Revolving Credit Facility [Member]
    
Credit Facilities [Line Items]    
Promissory note interest rate 5.25%  
Line of credit facility maturity date Jan. 31, 2015  
Line of credit facility initial term 1 year  
Prime Rate [Member]
    
Credit Facilities [Line Items]    
Interest rate on outstanding credit balance 0.50%  
Prime Rate [Member] | Revolving Credit Facility [Member]
    
Credit Facilities [Line Items]    
Interest rate on outstanding credit balance 2.00%