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Note 8 - Other Retirement Plans (Details Textual) - USD ($)	12 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Sep. 24, 2017
Employee Benefits and Share-based Compensation	$ 3,849,000	$ 4,430,000	$ 4,396,000
GCIU- Employer Retirement Fund [Member]
Multiemployer Plans, Withdrawal Obligation	3,181,000		$ 2,600,000
CWA/ITU Negotiated Pension Plan [Member]
Multiemployer Plans, Withdrawal Obligation	$ 3,255,000

X

- Definition

Amount of expense for employee benefit and equity-based compensation.

+ References

No definition available.

+ Details

Name:	us-gaap_EmployeeBenefitsAndShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of the obligation recognized by withdrawing from a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

No definition available.

+ Details

Name:	us-gaap_MultiemployerPlansWithdrawalObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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

X

- Details

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