Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details)

v3.10.0.1
Stockholders' Equity (Details) - USD ($)
3 Months Ended 12 Months Ended
Jan. 05, 2018
Oct. 31, 2018
Oct. 31, 2017
Jul. 31, 2018
Dec. 31, 2014
Jan. 14, 2011
Stockholders' Equity (Details) [Line Items]            
Common Stock, Par or Stated Value Per Share (in Dollars per share)   $ 0.01   $ 0.01    
Percentage of Commission Payable on Equity Offering   3.00%        
Maximum Offering Price Under Sales Agreement   $ 20,000,000     $ 20,000,000  
Excess Tax Benefit from Share-based Compensation, Financing Activities   0 $ 0      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options   $ 900,000        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition   12 months        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value   $ 1,000 $ 10,000      
Restricted Stock [Member]            
Stockholders' Equity (Details) [Line Items]            
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options   $ 100,000        
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Outstanding Weighted Average Remaining Contractual Terms   27 months        
Performance Shares [Member]            
Stockholders' Equity (Details) [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       3 years    
2011 Plan [Member]            
Stockholders' Equity (Details) [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) 5,000,000         3,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in Shares) 2,000,000          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)   1,933,000        
Common Stock [Member]            
Stockholders' Equity (Details) [Line Items]            
Authorized Common Stock That May Be Issued And Sold Under Sales Agreement       $ 19,150,000    
Securities That May Be Sold Under The Agreement       150,000,000    
Executive Officers [Member] | Performance Shares [Member]            
Stockholders' Equity (Details) [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value       $ 141,000    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       3 years    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)       32,000