Leases - Summary of Decreases in ROU Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 28, 2025	Dec. 29, 2024
Leases [Abstract]
Operating leases	$ 3,881	$ 91
Finance leases	$ 219	$ 0

Decreases in operating lease right of use assets related to lease terminations and modifications.

No definition available.

Name:	vitl_DecreasesInOperatingLeaseRightOfUseAssetsRelatedToLeaseTerminationsAndModifications
Namespace Prefix:	vitl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration