Number of Tenants Representing More Than 10 Percent of Rental Revenue

No definition available.

Name:	lxp_NumberOfTenantsRepresentingMoreThan10PercentOfRentalRevenue
Namespace Prefix:	lxp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- 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

No definition available.

+ Details

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

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of the lessee'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

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

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

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

- Details

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

- Details

Name:	us-gaap_MajorCustomersAxis=lxp_SMAscottLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=lxp_TenantConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=lxp_TribecaAscottLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=lxp_ALStoneGroundTenantLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=lxp_PreferredFreezerServicesofRichlandLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Concentration of Risk (Details)	12 Months Ended
Concentration of Risk (Details)	Dec. 31, 2016 Property hotel	Dec. 31, 2015 tenant	Dec. 31, 2014 tenant
Concentration Risk [Line Items]
Number of tenants representing more than 10% of rental revenue \| tenant		0	0
Number of properties	195
LCIF [Member]
Concentration Risk [Line Items]
Lease term (in years)	99 years
Number of properties	33
LCIF [Member] \| Hotel [Member]
Concentration Risk [Line Items]
Number of properties \| hotel	3
LCIF [Member] \| SM Ascott LLC [Member] \| Tenant Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk percentage	11.20%	14.70%	15.90%
LCIF [Member] \| Tribeca Ascott LLC [Member] \| Tenant Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk percentage	0.00%	12.60%	13.60%
LCIF [Member] \| AL Stone Ground Tenant LLC [Member] \| Tenant Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk percentage	0.00%	11.50%	12.40%
LCIF [Member] \| Preferred Freezer Services of Richland, LLC [Member] \| Tenant Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk percentage	11.40%	0.00%	0.00%
Maximum [Member] \| Sales Revenue, Net [Member] \| Tenant Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk percentage		10.00%	10.00%