Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details)

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Stockholders' Equity (Details) - USD ($)
 3 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Jul. 31, 2015
Dec. 31, 2014
Stockholders' Equity (Details) [Line Items]        
Common Stock, Par or Stated Value Per Share (in Dollars per share) $ 0.01   $ 0.01  
Maximum Offering Price Under Sales Agreement $ 20,000,000     $ 20,000,000
Percentage of Commission Payable on Equity Offering 3.00%      
Proceeds from Issuance of Common Stock   $ 2,322,000    
Excess Tax Benefit from Share-based Compensation, Financing Activities $ 0 0    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 400,000      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 11 months      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 100,000      
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Outstanding Weighted Average Remaining Contractual Terms 21 months      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value $ 21,000 $ 35,000    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares) 1,309,000      
Common Stock [Member]        
Stockholders' Equity (Details) [Line Items]        
Stock Issued During Period, Shares, New Issues (in Shares)   505,829    
Average Sale Price of Stock (in Dollars per share)   $ 5.38    
Stock Offering and Commissions Expenses   $ 82,000