Quarterly report pursuant to Section 13 or 15(d)

Stockholders??? Equity (Details)

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Stockholders’ Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Jan. 31, 2018
Sep. 30, 2017
Apr. 30, 2022
Apr. 30, 2021
Apr. 30, 2022
Jul. 31, 2021
Dec. 31, 2014
Jan. 31, 2011
Stockholders’ Equity (Details) [Line Items]                
Common stock, par value (in Dollars per share)     $ 0.01   $ 0.01 $ 0.01    
Percentage of commission payable on equity offering         3.00%      
Maximum offering price under sales agreement     $ 20,000   $ 20,000   $ 20,000  
Common stock available for grant, description         The amendment and restatement of the Amended and Restated 2011 Plan was for purposes of, among other things, (i) increasing the shares of common stock available for grant under the Amended and Restated 2011 Plan by an additional 4,000,000 shares of common stock bringing the total number of shares available for grant to 9,000,000 shares of common stock and (ii) extending the term of the Amended and Restated 2011 Plan until October 7, 2030.      
Grant common stock shares (in Shares)     4,955,000   4,955,000      
Share based compensation expense         $ 225      
Number of the board of directors         2      
Performance stock units     $ 124   $ 124      
Compensation cost related to non-vested options         $ 1,954      
Performance shares description         The PSUs earned will be determined over a three-year performance period.      
Reversed cumulative accruals     124   $ 124      
Net PSU compensation (credit) expense       $ 105 $ 57      
RSUs award (in Shares)         260,000      
Cliff vest over years         3 years      
Fair market value         $ 881      
RSUs awarded (in Shares)         117,189      
Fair market value         $ 300      
Shared based compensation expense RSUs     $ 86   $ 159      
2011 Plan [Member]                
Stockholders’ Equity (Details) [Line Items]                
Common stock shares (in Shares)               3,000,000
Shares of common stock bringing (in Shares) 2,000,000              
Common stock available for grants (in Shares) 5,000,000              
Common Stock [Member]                
Stockholders’ Equity (Details) [Line Items]                
Aggregate amount   $ 19,200            
Total amount   $ 150,000            
Two Former Officers [Member]                
Stockholders’ Equity (Details) [Line Items]                
Forfeited (in Shares)         14,500