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Summary of Significant Accounting Policies (Details Narrative) - USD ($)	3 Months Ended		9 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024	Apr. 30, 2024	Jan. 31, 2023	Aug. 31, 2020
Product Information [Line Items]
Cash, cash equivalents and restricted cash	$ 10,180,000		$ 10,180,000		$ 3,305,000
Allowance for credit losses	100,000		100,000
Share-based compensation expense	800,000	$ 100,000	1,331,000	$ 803,000
Revenues	825,000	1,792,000	4,545,000	3,953,000
Revenue remaining performance obligation	7,500,000	3,300,000	$ 7,500,000	$ 3,300,000
Antidilutive securities excluded from computation of diluted net loss per share			20,835,027	6,094,714
Product development expense	$ 1,300,000	$ 1,500,000	$ 2,600,000	$ 5,500,000
Patents [Member]
Product Information [Line Items]
Intangible asset estimated lives	20 years		20 years
Trade Names [Member]
Product Information [Line Items]
Intangible asset estimated lives	12 years		12 years
Customer Relationships [Member]
Product Information [Line Items]
Intangible asset estimated lives	10 years		10 years
Transferred at Point in Time [Member]
Product Information [Line Items]
Revenues	$ 400,000		$ 4,000,000.0
Transferred over Time [Member]
Product Information [Line Items]
Revenues	$ 400,000		$ 500,000
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Four Customers [Member]
Product Information [Line Items]
Concentration risk percentage			73.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Five Customers [Member]
Product Information [Line Items]
Concentration risk percentage				36.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Three Customers [Member]
Product Information [Line Items]
Concentration risk percentage	95.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customers [Member]
Product Information [Line Items]
Concentration risk percentage		85.00%
Santander Bank [Member]
Product Information [Line Items]
Deposits	$ 154,000		$ 154,000
Letters of credit issued amount							$ 645,000
Letters of credit outstanding amount		$ 65,000		$ 65,000		$ 258,000	$ 323,000

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