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Basis of Presentation Schedule of Less than 100% Subsidiaries (Details)	6 Months Ended
	Mar. 31, 2019 USD ($)
Schedule Of Less Than 100% Owned Subsidiaries [Line Items]
Business acquisition; headline purchase price	$ 0.825
Equity Method Investee- TNI [Member]
Schedule Of Less Than 100% Owned Subsidiaries [Line Items]
Less Than 100% Owned Subsidiaries, Percentage Owned	50.00%
Equity Method Investee- MNI [Member]
Schedule Of Less Than 100% Owned Subsidiaries [Line Items]
Less Than 100% Owned Subsidiaries, Percentage Owned	50.00%

X

- Definition

Business acquisition; headline purchase price

+ References

No definition available.

+ Details

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Namespace Prefix:	lee_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Less Than 100% Owned Subsidiaries, Percentage Owned- Percentage of the less than 100% owned subsidiary owned by the reporting entity. Includes both equity method investments as well as consolidated subsidiaries.

+ References

No definition available.

+ Details

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Namespace Prefix:	lee_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Schedule Of Less Than 100% Owned Subsidiaries [Line Items]

+ References

No definition available.

+ Details

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Namespace Prefix:	lee_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	lee_LessThan100OwnedSubsidiariesAxis=lee_EquityMethodInvesteeTniMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	lee_LessThan100OwnedSubsidiariesAxis=lee_EquityMethodInvesteeMniMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: