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Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity - USD ($)
Total
Common Stock
Additional Paid-in Capital
Retained Earnings (Deficit)
Treasury Stock
Beginning Balance (in shares) at Jul. 31, 2023 100,000        
Beginning Balance at Jul. 31, 2023 $ 112,211,000        
Increase (Decrease) in Temporary Equity [Roll Forward]          
Extinguishment of convertible preferred stock (in shares) (100,000)        
Extinguishment of convertible preferred stock $ (115,721,000)        
Issuance of convertible preferred stock (in shares) 166,121        
Issuance of convertible preferred stock $ (166,121,000)        
Convertible preferred stock issuance costs (4,349,000)        
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) $ 11,992,000        
Ending Balance (in shares) at Apr. 30, 2024 166,121        
Ending Balance at Apr. 30, 2024 $ 170,254,000        
Beginning balance (in shares) at Jul. 31, 2023   43,096,271      
Beginning balance (in shares) at Jul. 31, 2023         15,033,317
Beginning balance at Jul. 31, 2023 438,299,000 $ 4,310,000 $ 636,925,000 $ 238,913,000 $ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Equity-classified stock award compensation 5,238,000   5,238,000    
Issuance of employee stock purchase plan shares (in shares)   38,554      
Issuance of employee stock purchase plan shares 219,000 $ 4,000 215,000    
Issuance of restricted stock (in shares)   (2,686)      
Issuance of restricted stock, net of forfeiture 0        
Net settlement of stock-based awards (in shares)   394,233      
Net settlement of stock-based awards (2,609,000) $ 39,000 (2,648,000)    
Extinguishment of convertible preferred stock (13,640,000)        
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) 11,992,000     11,992,000  
Convertible preferred stock amendment fees (650,000)   (650,000)    
Reversal of dividend equivalents 104,000     104,000  
Net loss (9,200,000)     (9,200,000)  
Ending balance (in shares) at Apr. 30, 2024   43,526,372      
Ending balance (in shares) at Apr. 30, 2024         15,033,317
Ending balance at Apr. 30, 2024 $ 406,419,000 $ 4,353,000 639,730,000 204,185,000 $ (441,849,000)
Beginning Balance (in shares) at Jan. 31, 2024 166,121        
Beginning Balance at Jan. 31, 2024 $ 166,495,000        
Increase (Decrease) in Temporary Equity [Roll Forward]          
Convertible preferred stock issuance costs (76,000)        
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) $ 3,835,000        
Ending Balance (in shares) at Apr. 30, 2024 166,121        
Ending Balance at Apr. 30, 2024 $ 170,254,000        
Beginning balance (in shares) at Jan. 31, 2024   43,506,289      
Beginning balance (in shares) at Jan. 31, 2024         15,033,317
Beginning balance at Jan. 31, 2024 406,959,000 $ 4,351,000 639,300,000 205,157,000 $ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Equity-classified stock award compensation 404,000   404,000    
Issuance of employee stock purchase plan shares (in shares)   14,437      
Issuance of employee stock purchase plan shares 43,000 $ 2,000 41,000    
Net settlement of stock-based awards (in shares)   5,646      
Net settlement of stock-based awards (15,000) $ 0 (15,000)    
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) 3,835,000     3,835,000  
Reversal of dividend equivalents 68,000     68,000  
Net loss 2,795,000     2,795,000  
Ending balance (in shares) at Apr. 30, 2024   43,526,372      
Ending balance (in shares) at Apr. 30, 2024         15,033,317
Ending balance at Apr. 30, 2024 $ 406,419,000 $ 4,353,000 639,730,000 204,185,000 $ (441,849,000)
Beginning Balance (in shares) at Jul. 31, 2024 171,827        
Beginning Balance at Jul. 31, 2024 $ 180,076,000        
Increase (Decrease) in Temporary Equity [Roll Forward]          
Extinguishment of convertible preferred stock (in shares) (171,827)        
Extinguishment of convertible preferred stock $ (183,489,000)        
Issuance of convertible preferred stock (in shares) 178,181        
Issuance of convertible preferred stock $ (96,700,000)        
Convertible preferred stock issuance costs 0        
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) $ 76,785,000        
Ending Balance (in shares) at Apr. 30, 2025 178,181        
Ending Balance at Apr. 30, 2025 $ 170,072,000        
Beginning balance (in shares) at Jul. 31, 2024 43,766,109 43,766,109      
Beginning balance (in shares) at Jul. 31, 2024 15,033,317       15,033,317
Beginning balance at Jul. 31, 2024 $ 306,253,000 $ 4,377,000 640,145,000 103,580,000 $ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Equity-classified stock award compensation 2,520,000   2,520,000    
Issuance of employee stock purchase plan shares (in shares)   41,249      
Issuance of employee stock purchase plan shares 101,000 $ 4,000 97,000    
Issuance of restricted stock (in shares)   63,450      
Issuance of restricted stock, net of forfeiture 0 $ 6,000 (6,000)    
Net settlement of stock-based awards (in shares)   524,852      
Net settlement of stock-based awards (785,000) $ 53,000 (838,000)    
Extinguishment of convertible preferred stock 51,179,000        
Issuance of convertible preferred stock (at fair value), excluding embedded derivatives (3,221,000)   (3,221,000)    
Convertible preferred stock amendment fees (8,816,000)        
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) (76,785,000)   (70,406,000) (6,379,000)  
Reversal of dividend equivalents 33,000   6,000 27,000  
Net loss $ (163,212,000)     (163,212,000)  
Ending balance (in shares) at Apr. 30, 2025 44,395,660 44,395,660      
Ending balance (in shares) at Apr. 30, 2025 15,033,317       15,033,317
Ending balance at Apr. 30, 2025 $ 115,433,000 $ 4,440,000 567,647,000 (14,805,000) $ (441,849,000)
Beginning Balance (in shares) at Jan. 31, 2025 175,264        
Beginning Balance at Jan. 31, 2025 $ 122,317,000        
Increase (Decrease) in Temporary Equity [Roll Forward]          
Issuance of convertible preferred stock (in shares) 2,917        
Issuance of convertible preferred stock $ (3,221,000)   (3,221,000)    
Convertible preferred stock issuance costs 0        
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) $ 44,534,000        
Ending Balance (in shares) at Apr. 30, 2025 178,181        
Ending Balance at Apr. 30, 2025 $ 170,072,000        
Beginning balance (in shares) at Jan. 31, 2025   44,380,110      
Beginning balance (in shares) at Jan. 31, 2025         15,033,317
Beginning balance at Jan. 31, 2025 128,708,000 $ 4,438,000 614,858,000 (48,739,000) $ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Equity-classified stock award compensation 1,195,000   1,195,000    
Issuance of employee stock purchase plan shares (in shares)   13,663      
Issuance of employee stock purchase plan shares 18,000 $ 1,000 17,000    
Net settlement of stock-based awards (in shares)   1,887      
Net settlement of stock-based awards (18,000) $ 1,000 (19,000)    
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) 44,534,000   44,534,000    
Convertible preferred stock amendment fees (650,000)   (650,000)    
Reversal of dividend equivalents 1,000   1,000    
Net loss $ 33,934,000     33,934,000  
Ending balance (in shares) at Apr. 30, 2025 44,395,660 44,395,660      
Ending balance (in shares) at Apr. 30, 2025 15,033,317       15,033,317
Ending balance at Apr. 30, 2025 $ 115,433,000 $ 4,440,000 $ 567,647,000 $ (14,805,000) $ (441,849,000)