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Note 6 - Capital Shares - Vested Restricted Stock Units (Details)	Mar. 31, 2025 shares
Restricted Stock Units (RSUs) [Member]
Fully-vested RSUs (in shares)	98,147

X

- Definition

Number of fully vested equity instruments other than options outstanding that can be converted into shares.

+ References

No definition available.

+ Details

Name:	edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedNumber
Namespace Prefix:	edsa_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: