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Note 8 - Other Retirement Plans - Other Retirement Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Sep. 24, 2017
Pension contributions	$ 650	$ 4,990
GCIU- Employer Retirement Fund [Member]
Pension contributions	98	107	123
District No. 9 Pension Trust [Member]
Pension contributions	$ 30	$ 29	$ 31

X

- Definition

Amount of cash outflow for pension benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes other postretirement benefit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585

+ Details

Name:	us-gaap_PensionContributions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_MultiemployerPlanNameAxis=lee_GciuEmployerRetirementFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MultiemployerPlanNameAxis=lee_DistrictNo9PensionTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: