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Subsequent Events - Additional Information (Detail)	Aug. 15, 2022
Subsequent Event
Subsequent Event [Line Items]
License agreement termination date	Aug. 14, 2022

X

- Definition

License agreement termination date.

+ References

No definition available.

+ Details

Name:	cbio_LicenseAgreementTerminationDate
Namespace Prefix:	cbio_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: