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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
 12 Months Ended
Jan. 31, 2013
Jan. 31, 2012
Jan. 31, 2011
Summary Of Significant Accounting Policies [Line Items]      
Management agreement, initial term 20 years    
Number of major customers 3    
Cash and cash equivalents $ 1,176,727 $ 164,361 $ 397,101
Computer and Software
      
Summary Of Significant Accounting Policies [Line Items]      
Property plant and equipment, useful life 3 years    
Furniture and fixtures
      
Summary Of Significant Accounting Policies [Line Items]      
Property plant and equipment, useful life 8 years    
Machinery and Equipment
      
Summary Of Significant Accounting Policies [Line Items]      
Property plant and equipment, useful life 5 years    
Brokerage money market account
      
Summary Of Significant Accounting Policies [Line Items]      
Cash and cash equivalents 427,678    
Medical Malpractise Insurance
      
Summary Of Significant Accounting Policies [Line Items]      
Malpractice Insurance, Coverage Floor 1,000,000    
Malpractice Insurance, Annual Coverage Limit $ 3,000,000