Property and Equipment - Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2024
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 449,000	$ 445,000
Depreciation and amortization, excluding finance leases	412,000	409,000
Finance lease, asset, gross	1,000,000.0				$ 1,000,000.0
Finance lease, depreciation and amortization	37,000	36,000
Amortization of leased assets	$ 37,000	36,000
Finance lease, weighted average remaining lease term	2 years 4 months 9 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%
Amortization of leased assets	$ 18,000	17,400
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%
Amortization of leased assets	$ 19,000	$ 18,400
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