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Note 9 - Other Retirement Plans (Details Textual) - USD ($)	12 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 30, 2018	Dec. 27, 2020
Employee Benefits and Share-based Compensation	$ 4,141,000	$ 3,849,000	$ 4,430,000
Multiemployer Plans, Withdrawal Obligation	$ 11,473,000	$ 7,359,000
Forecast [Member] | Buffalo Subsidiaries [Member]
Multiemployer Plans, Withdrawal Obligation				$ 12,300,000
Minimum [Member]
Multiemployer Plans, Withdrawal Obligation, Period (Year)	20 years

X

- Definition

The period of time in which an obligation recognized by withdrawing from a pension or postretirement benefit plan will be paid.

+ References

No definition available.

+ Details

Name:	lee_MultiemployerPlansWithdrawalObligationPeriod
Namespace Prefix:	lee_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=lee_BuffaloSubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: