Debt (Details - Debt component) - Convertible Debt Carrying Amount [Member] - USD ($) $ in Thousands	Apr. 30, 2023	Apr. 30, 2022
Offsetting Assets [Line Items]
Principal	$ 143,750	$ 143,750
Unamortized issuance costs	(3,127)	(4,173)
Net carrying amount	$ 140,623	$ 139,577

Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant