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Property and Equipment - Narrative (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Oct. 31, 2023
Oct. 31, 2022
Apr. 30, 2023
Apr. 30, 2022
Property, Plant and Equipment [Line Items]            
Depreciation and amortization $ 484,000 $ 560,000 $ 929,000 $ 1,100,000    
Depreciation and amortization, excluding finance leases 448,000 525,000 857,000 1,000,000    
Finance lease, asset, gross 1,000,000   1,000,000   $ 1,000,000  
Finance lease, depreciation and amortization 36,000 35,000 72,000 64,000    
Servicing asset 1,900,000   1,900,000      
Servicing asset at fair value, amount         807,000  
Hosting arrangement, amortization expense $ 0 157,000 $ 0 314,000    
Finance lease, weighted average remaining lease term 3 years 21 days   3 years 21 days      
2023 Finance Lease            
Property, Plant and Equipment [Line Items]            
Finance lease costs $ 368,000       $ 368,000  
Present value of minimum future obligations interest rate 3.50%          
Finance lease, amortization $ 17,600 17,000 $ 35,000 28,200    
2022 Finance Lease            
Property, Plant and Equipment [Line Items]            
Finance lease costs $ 370,000         $ 370,000
Present value of minimum future obligations interest rate 3.25%          
Finance lease, amortization $ 18,500 $ 18,000 $ 36,900 $ 35,700    
Capitalized software development costs            
Property, Plant and Equipment [Line Items]            
Useful lives 3 years   3 years      
Minimum            
Property, Plant and Equipment [Line Items]            
Useful lives 3 years   3 years      
Maximum            
Property, Plant and Equipment [Line Items]            
Useful lives 9 years   9 years