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Stock-Based Compensation (Details Narrative) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Jan. 31, 2020
Dec. 31, 2019
Jul. 31, 2020
Jul. 31, 2019
Jan. 18, 2018
Dec. 31, 2015
Employee Stock Option [Member]            
Number of shares granted during the period        
Share-based compensation unvested shares of stock options     493,000      
Share-based compensation intrinsic value of outstanding     $ 0      
Share-based compensation options, exercisable intrinsic value     $ 0      
Share-based compensation weighted average remaining contractual term     9 years 6 months      
Share-based compensation expense     $ 99 $ 89    
Unrecognized compensation cost related to non-vested stock options     $ 233      
Share-based compensation cost expected to recognize weighted-average term     9 months 18 days      
Employee Stock Option [Member] | Performance-based Stock Options [Member] | Two Executives [Member]            
Number of shares granted during the period 81,334          
Stock options vesting period, description The awards can vest over 2 years if there is positive total shareholder return (e.g. share price increase) as measured to the 5-day (January 11-15, 2021) and (January 10-14, 2022) share price Volume Weighted Average Price ("VWAP").          
Employee Stock Option [Member] | Subject to Service- Based Vesting Requirements [Member] | Employee [Member]            
Share-based compensation expense     $ 12 0    
Unrecognized compensation cost related to non-vested stock options     $ 18      
Share-based compensation cost expected to recognize weighted-average term     4 months 24 days      
Restricted stock options, granted during period   51,547        
Restricted Stock [Member]            
Share-based compensation expense     $ 5 $ 3    
Unrecognized compensation cost related to non-vested stock options     $ 5      
Share-based compensation cost expected to recognize weighted-average term     3 months 19 days      
2015 Omnibus Incentive Plan [Member]            
Share-based compensation arrangement by share-based payment award, number of shares authorized           732,036
Stock based compensation shares, available for grant     168,842      
2018 Inducement Plan [Member]            
Stock based compensation shares, available for grant     11,487   25,000