Construction Commitment, Maximum Amount

No definition available.

Name:	lxp_ConstructionCommitmentMaximumAmount
Namespace Prefix:	lxp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Disposal Group, Including Discontinued Operation, Mortgage Payable

+ References

No definition available.

+ Details

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Namespace Prefix:	lxp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Term of the lessor's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Cash received for the sale of real estate that is not part of an investing activity during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585

+ Details

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

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
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- Details

Name:	invest_InvestmentGeographicRegionAxis=lxp_OpelikaAlabamaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_IndustrialPropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	invest_InvestmentGeographicRegionAxis=lxp_NewYorkNewYorkMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_OfficeBuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Events (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
Subsequent Events (Details) - USD ($) $ in Thousands	May. 05, 2016	Mar. 31, 2016	Dec. 31, 2015
Subsequent Event [Line Items]
Expected Maximum Commitment/Contribution		$ 298,621
Mortgage payable		$ 0	$ 32
Subsequent Event [Member] \| Opelika, Alabama [Member] \| Industrial property [Member]
Subsequent Event [Line Items]
Expected Maximum Commitment/Contribution	$ 37,000
Term of contract (in years)	25 years
Subsequent Event [Member] \| New York, New York [Member] \| Land [Member]
Subsequent Event [Line Items]
Proceeds from sale of real estate	$ 37,500
Mortgage payable	29,193
Subsequent Event [Member] \| Lake Forest, California [Member] \| Office Building [Member]
Subsequent Event [Line Items]
Proceeds from sale of real estate	$ 19,000