Annual report pursuant to Section 13 and 15(d)

Schedule II Valuation and Qualifying Accounts (Details) - Schedule of II Valuation and Qualifying Accounts

v3.23.3
Schedule II Valuation and Qualifying Accounts (Details) - Schedule of II Valuation and Qualifying Accounts - USD ($)
 12 Months Ended
Jul. 31, 2023
Jul. 31, 2022
Allowance for doubtful accounts receivable [Member]    
Schedule II Valuation and Qualifying Accounts (Details) - Schedule of II Valuation and Qualifying Accounts [Line Items]    
Balance at Beginning of Year $ 161,000 $ 180,000
Charged (credited) to costs and expenses 9,000 12,000
Deductions 31,000 [1]
Balance at end of Year 170,000 161,000
Deferred tax valuation allowance [Member]    
Schedule II Valuation and Qualifying Accounts (Details) - Schedule of II Valuation and Qualifying Accounts [Line Items]    
Balance at Beginning of Year 34,610,000 29,874,000
Charged (credited) to costs and expenses (7,925,000) 4,736,000
Deductions
Balance at end of Year $ 26,685,000 $ 34,610,000
[1] Write-off of uncollectible accounts receivable.