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Convertible Preferred Stock (Details) - USD ($)
 3 Months Ended 6 Months Ended
Dec. 13, 2023
Oct. 19, 2021
Oct. 18, 2021
Jan. 31, 2024
Jan. 31, 2024
Jan. 31, 2023
Jan. 22, 2024
Jul. 31, 2023
Class of Stock [Line Items]                
Series A convertible preferred stock, shares authorized (in shares)       166,121 166,121     125,000
Series A convertible preferred stock, par value per share (in dollars per share)       $ 0.10 $ 0.10     $ 0.10
Convertible preferred stock, aggregate purchase price       $ 166,121,000 $ 166,121,000      
Issuance of convertible preferred stock 100,000 100,000   166,121 166,121      
Preferred stock, par value (in dollars per share)       $ 0.10 $ 0.10     $ 0.10
Shares issued upon conversion (in shares) 115,721.22              
Proceeds from issuance of convertible preferred stock         $ 43,200,000 $ 0    
Expense reimbursement $ 1,800,000              
Warrant, term       5 years 6 months 5 years 6 months      
Warrant liability         $ 6,440,000      
Conversion of stock, loss         13,640,000      
Current redemption value       $ 166,495,000 166,495,000     $ 112,211,000
Convertible preferred stock, accrued dividends       374,000 374,000     $ 604,000
Carrying value adjustment in the period         8,157,000      
Convertible Preferred Stock                
Class of Stock [Line Items]                
Liquidation preference per share (in dollars per share)             $ 7.99  
Series A convertible preferred stock, shares authorized (in shares) 50,000,000   125,000          
Series A convertible preferred stock, par value per share (in dollars per share)     $ 0.10          
Convertible preferred stock, aggregate purchase price     $ 125,000,000          
Dividend rate, in cash 7.75%              
Dividend rate   6.50%            
Preferred stock redemption rate   50.00%            
Stock price change period             30 days  
Disposition of business, maximum fair value $ 75,000,000              
Carrying amount, attributable to parent             $ 166,121,000  
Initial carrying amount             161,848,000  
Proceeds from initial issuance, net of issuance costs             $ 4,273,000  
Current redemption value       166,495,000 166,495,000      
Convertible preferred stock, accrued dividends       $ 374,000 374,000      
Carrying value adjustment in the period         3,510,000      
Convertible Preferred Stock | IPO                
Class of Stock [Line Items]                
Convertible preferred stock, aggregate purchase price   $ 100,000,000            
Series B Preferred Stock                
Class of Stock [Line Items]                
Conversion rate 150.00%              
Shares issued and sold (in shares) 45,000              
Preferred stock, par value (in dollars per share) $ 0.10              
Shares issued during period, value $ 45,000,000              
Shares issued, price per shares (usd per share) $ 1,000              
Shares, issued (in shares) 5,400              
Proceeds from issuance of convertible preferred stock $ 43,200,000              
Dividend rate, percent 9.00%              
Carrying value adjustment in the period         $ 4,647,000      
Liquidation rate 100.00%              
Series A-1 Convertible Preferred Stock                
Class of Stock [Line Items]                
Series A convertible preferred stock, par value per share (in dollars per share) $ 0.10              
Issuance of convertible preferred stock 100,000              
Liquidation preference per share (usd per share) $ 1,134.2