Financial Instruments and Financial Risk Management (Details)	12 Months Ended
Mar. 31, 2026 USD ($)
Financial Instruments and Financial Risk Management [Abstract]
Percentage of fluctuation in foreign exchange rate	10.00%
Impact to net loss and comprehensive loss	$ 86,443

The increase (decrease) in profit and loss as a result of an change in a designated risk component that was reasonably possible at the end of the reporting period. Excludes defined benefit plan obligations.

No definition available.

Name:	pbm_IncreaseDecreaseInProfitOrLossDueToReasonablyPossibleChangeInDesignatedRiskComponent
Namespace Prefix:	pbm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration