Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Apr. 30, 2024 USD ($) institution	Apr. 30, 2023 USD ($) institution	Apr. 30, 2022 USD ($)
Property, Plant and Equipment [Line Items]
Cash	$ 2,618,000	$ 10,118,000
Cash equivalents	$ 0	$ 0
Number of major institutions with cash balances | institution	3	3
Net loss	$ (7,276,000)	$ (5,335,000)
Cash used in operations	6,137,000	(3,972,000)
Working capital deficit	7,900,000
Accumulated deficit	84,593,000	77,317,000
Asset impairment	0	807,000
Impairment of goodwill	0	0
Unrecognized tax benefits	181,000	181,000	$ 181,000
Income tax penalties and interest expense	0	0
(Benefit) provision for income tax	$ (32,000)	68,000
Provision adjustment		(95,000)
Capitalized software development costs
Property, Plant and Equipment [Line Items]
Finite-lived intangibles		0
Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Maximum
Property, Plant and Equipment [Line Items]
Useful life	7 years
Recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 0	0
Liabilities, fair value	0	0
Nonrecurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Liabilities, fair value	$ 0	$ 0