Income Taxes (Details - Unrecognized tax positions) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2023	Apr. 30, 2022
Income Tax Disclosure [Abstract]
Unrecognized tax positions, beginning of year	$ 5,133	$ 1,600
Gross (decrease) increase – prior period tax positions	(1,693)	3,533
Unrecognized tax positions, end of year	$ 3,440	$ 5,133

Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A

Name:	us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration