Fair Value of Financial Instruments - Non-Recurring Basis (Details) - USD ($)	Sep. 30, 2023	Jun. 30, 2023
Assets at fair value
Reserves on impaired loans individually evaluated	$ 0	$ 0

Amount of reserves on impaired finance receivables..

No definition available.

Name:	wmpn_FinanceReceivableImpairedReserves
Namespace Prefix:	wmpn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant