Property and Equipment - Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Apr. 30, 2023	Apr. 30, 2022
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 445,000	$ 528,000
Depreciation and amortization, excluding finance leases	409,000	499,000
Finance lease, asset, gross	1,000,000		$ 1,000,000
Finance lease, depreciation and amortization	36,000	29,000
Capitalized software development costs	0		0
Servicing asset	1,900,000
Servicing asset at fair value, amount			807,000
Hosting arrangement, amortization expense	$ 0	157,000
Finance lease, weighted average remaining lease term	3 years 3 months 18 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	$ 17,400	11,200
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	$ 18,400	$ 18,000
Capitalized software development costs
Property, Plant and Equipment [Line Items]
Useful lives	3 years
Minimum
Property, Plant and Equipment [Line Items]
Useful lives	3 years
Maximum
Property, Plant and Equipment [Line Items]
Useful lives	9 years