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Summary of Business and Significant Accounting Policies (Self-Insurance) (Details) (USD $)
Jan. 31, 2014
Jan. 31, 2013
Loss Contingencies [Line Items]    
Discount rate 0.50% 0.50%
Product and General Liability [Member]
    
Loss Contingencies [Line Items]    
Self insurance reserve $ 250,000 $ 250,000
Workers Compensation [Member]
    
Loss Contingencies [Line Items]    
Self insurance reserve 250,000 250,000
Automobile Losses [Member]
    
Loss Contingencies [Line Items]    
Self insurance reserve $ 50,000 $ 50,000