MATERIAL ACCOUNTING POLICY INFORMATION AND BASIS OF PREPARATION - Share-based compensation (Details)	12 Months Ended
Mar. 31, 2026
Accounting Policies [Abstract]
Exercisable period	10 years

Share-Based Compensation Arrangement, Expiration Period

No definition available.

Name:	cybn_ShareBasedCompensationArrangementExpirationPeriod
Namespace Prefix:	cybn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration