Note 18 - Commitments and Contingent Liabilities (Details Textual)	12 Months Ended
Sep. 26, 2021 USD ($)
Construction and Equipment, Purchase Commitments	$ 3,791,000

Represents purchase commitments for construction and equipment.

No definition available.

Name:	lee_ConstructionAndEquipmentPurchaseCommitments
Namespace Prefix:	lee_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration