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Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity - USD ($)
Total
Common Stock
Additional Paid-in Capital
Retained Earnings
Treasury Stock
Beginning Balance (in shares) at Jul. 31, 2022 100,000        
Beginning Balance at Jul. 31, 2022 $ 105,204,000        
Increase (Decrease) in Temporary Equity [Roll Forward]          
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) $ 1,710,000        
Ending Balance (in shares) at Oct. 31, 2022 100,000        
Ending Balance at Oct. 31, 2022 $ 106,914,000        
Beginning balance (in shares) at Jul. 31, 2022   42,672,827      
Beginning balance (in shares) at Jul. 31, 2022         15,033,317
Beginning balance at Jul. 31, 2022 466,585,000 $ 4,267,000 $ 625,484,000 $ 278,683,000 $ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Equity-classified stock award compensation 904,000   904,000    
CEO transition costs related to equity-classified stock-based awards (See Note 1) 3,764,000   3,764,000    
Issuance of employee stock purchase plan shares (in shares)   15,017      
Issuance of employee stock purchase plan shares 119,000 $ 2,000 117,000    
Issuance of restricted stock (in shares)   10,718      
Issuance of restricted stock, net of forfeiture 0 $ 1,000 (1,000)    
Net settlement of stock-based awards (in shares)   112,284      
Net settlement of stock-based awards (1,230,000) $ 11,000 (1,241,000)    
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) (1,710,000)     (1,710,000)  
Cash dividends declared, net (2,774,000)     (2,774,000)  
Accrual of dividend equivalents, net of reversal (201,000)     (201,000)  
Net loss (11,096,000)     (11,096,000)  
Ending balance (in shares) at Oct. 31, 2022   42,810,846      
Ending balance (in shares) at Oct. 31, 2022         15,033,317
Ending balance at Oct. 31, 2022 $ 454,361,000 $ 4,281,000 629,027,000 262,902,000 $ (441,849,000)
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]          
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) $ 1,823,000        
Ending Balance (in shares) at Oct. 31, 2023 100,000        
Ending Balance at Oct. 31, 2023 $ 114,034,000        
Beginning balance (in shares) at Jul. 31, 2023 43,096,271 43,096,271      
Beginning balance (in shares) at Jul. 31, 2023 15,033,317       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 2,645,000   2,645,000    
Issuance of employee stock purchase plan shares (in shares)   12,799      
Issuance of employee stock purchase plan shares 94,000 $ 1,000 93,000    
Issuance of restricted stock (in shares)   13,904      
Issuance of restricted stock, net of forfeiture 0 $ 2,000 (2,000)    
Net settlement of stock-based awards (in shares)   145,808      
Net settlement of stock-based awards (995,000) $ 14,000 (1,009,000)    
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) (1,823,000)     (1,823,000)  
Reversal of dividend equivalents 23,000     23,000  
Net loss $ (1,437,000)     (1,437,000)  
Ending balance (in shares) at Oct. 31, 2023 43,268,782 43,268,782      
Ending balance (in shares) at Oct. 31, 2023 15,033,317       15,033,317
Ending balance at Oct. 31, 2023 $ 436,806,000 $ 4,327,000 $ 638,652,000 $ 235,676,000 $ (441,849,000)