Investments in Real Estate - Schedule of Real Estate Acquisitions (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2024	Dec. 31, 2023
Real Estate [Line Items]
Real estate, at cost	$ 4,044,720	$ 3,774,239
Industrial Property
Real Estate [Line Items]
Real estate, at cost	290,312
Land	36,451
Building and Improvements	$ 253,861
Phoenix, AZ \| Industrial Property \| Phoenix, AZ Industrial Property, Lease Expiring January 2031
Real Estate [Line Items]
Market (% owned)	100.00%
Real estate, at cost	$ 52,767
Land	9,449
Building and Improvements	$ 43,318
Central Florida \| Industrial Property \| Central Florida Industrial Property, Lease Expiration Date Not Available, Placed In Service, February 2024
Real Estate [Line Items]
Market (% owned)	80.00%
Real estate, at cost	$ 80,825
Land	10,618
Building and Improvements	$ 70,207
Central Florida \| Industrial Property \| Central Florida Industrial Property, Lease Expiration Date Not Available
Real Estate [Line Items]
Market (% owned)	100.00%
Real estate, at cost	$ 19,021
Land	4,493
Building and Improvements	$ 14,528
Period after completion of base building construction, placed in service	1 year
Indianapolis, IN \| Industrial Property \| Indianapolis, IN Industrial Property, Lease Expiration Date Not Available
Real Estate [Line Items]
Market (% owned)	80.00%
Real estate, at cost	$ 64,285
Land	5,126
Building and Improvements	$ 59,159
Greenville/Spartanburg, SC \| Industrial Property \| Greenville-Spartanburg, SC, Industrial Property, Lease Expiration Date Not Available
Real Estate [Line Items]
Market (% owned)	90.00%
Real estate, at cost	$ 73,414
Land	6,765
Building and Improvements	$ 66,649

Investment Building And Building Improvements Acquired During Period

No definition available.

Name:	lxp_InvestmentBuildingAndBuildingImprovementsAcquiredDuringPeriod
Namespace Prefix:	lxp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Investment Building And Building Improvements, Placed In Service Vacant, Term After Completion

+ References

No definition available.

+ Details

Name:	lxp_InvestmentBuildingAndBuildingImprovementsPlacedInServiceVacantTermAfterCompletion
Namespace Prefix:	lxp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_Land
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

+ Details

Name:	us-gaap_RealEstateInvestmentPropertyAtCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 976
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477332/976-310-50-1

+ Details

Name:	us-gaap_RealEstateLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-5A

+ Details

Name:	us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_IndustrialPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=lxp_PhoenixArizonaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=lxp_PhoenixAZIndustrialPropertyExpiringJanuary2031Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=lxp_CentralFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=lxp_CentralFloridaIndustrialPropertyLeaseExpirationDateNotAvailablePlacedInServiceFebruary2024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=lxp_CentralFloridaIndustrialPropertyLeaseExpirationDateNotAvailablePlacedInServiceJune2024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=lxp_IndianapolisIndianaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=lxp_IndianapolisINIndustrialPropertyLeaseExpirationDateNotAvailableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=lxp_GreenvilleSpartanburgSouthCarolinaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=lxp_GreenvilleSpartanburgSCIndustrialPropertyLeaseExpirationDateNotAvailableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: