Accounting Policies Advertising expense policy (Details)	12 Months Ended
Apr. 30, 2025	Apr. 30, 2024
Revenue recognition policy [Abstract]
Advertising Cost, Expense Method [Fixed List]	Expensed first time advertising takes place	Expensed first time advertising takes place

Indicates method for expensing advertising cost either as incurred or first time advertising takes place. Acceptable values are "Expensed as incurred" and "Expensed first time advertising takes place".

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 720
-SubTopic 35
-Name Accounting Standards Codification
-Section 55
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483385/720-35-55-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-SubTopic 35
-Topic 720
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483406/720-35-50-1

Name:	us-gaap_AdvertisingCostExpenseMethodFixedList
Namespace Prefix:	us-gaap_
Data Type:	us-types:advertisingExpenseMethodItemType
Balance Type:	na
Period Type:	duration