v3.26.1
Income Taxes (Details Narrative) - USD ($)
 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Jul. 04, 2026
Operating Loss Carryforwards [Line Items]      
Income tax benefit $ (1,034,000)  
Deferred tax assets, valuation allowance 69,162,000 62,192,000  
Valuation allowance, deferred tax asset, increase (decrease), amount 7,000,000.0 1,900,000  
Accelerated tax deductions     $ 31,000,000
Net operating loss carry forwards $ 272,700,000    
Operating loss carryforwards, expiration description of which $128.1 begin to expire in fiscal 2027    
Operating loss carryforwards subject to no expiration $ 144,700,000    
Operating loss carryforwards, expiration description the deductibility of such federal net operating losses may be limited to 80% of our taxable income in future years.    
Tax credit carryforward, amount $ 4,700,000    
Maximum [Member]      
Operating Loss Carryforwards [Line Items]      
Income tax benefit, research and development expense 20,000,000.0    
Income Tax Jurisdiction, Domestic State and Local [Member]      
Operating Loss Carryforwards [Line Items]      
Net operating loss carry forwards $ 33,700,000    
Operating loss carryforwards, expiration description begin to expire in 2036    
New Jersey Division of Taxation [Member]      
Operating Loss Carryforwards [Line Items]      
Income tax benefit $ 0 $ 1,000,000.0