Commitments And Contingencies (Narrative) (Details) $ in Millions	Mar. 31, 2024 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Commitment for lease not yet commenced	$ 42.8

Amount of lessee's future fixed cash payments for leases that have not yet commenced, which are not included on the balance sheet until the commencement date.

No definition available.

Name:	lanc_LesseeLeaseCommitmentNotYetCommenced
Namespace Prefix:	lanc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant