Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Narrative)

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Income Taxes (Details Narrative) - USD ($)
12 Months Ended
Jul. 31, 2019
Jul. 31, 2018
Uncertain tax position likehood sustained An uncertain income tax position will not be recognized if it has less than a 50% likelihood of being sustained.  
Unrecognized tax benefits  
Interest/Penalties in income tax expense
Net operating loss carryforwards expiration description The federal net operating loss, research tax credit carryforwards and New Jersey and California net operating loss carryforwards will begin to expire in 2029 unless previously utilized  
Valuation allowance $ 43,829,000 37,201,000
Changes in valuation allowances 6,600,000 $ 800,000
New Jersey [Member]    
Net operating loss carryforwards $ 38,000,000  
Net operating loss carryforwards expiration description 2029  
California [Member]    
Net operating loss carryforwards $ 119,000,000  
Research and development tax credit carryforwards 1,920,000  
Hiring credits $ 9,300  
Net operating loss carryforwards expiration description 2029  
Australia [Member]    
Net operating loss carryforwards $ 1,700,000  
Federal [Member]    
Net operating loss carryforwards 129,000,000  
Research and development tax credit carryforwards $ 1,740,000  
Net operating loss carryforwards expiration description 2029