Construction Loan Commitment To Lend Amount Maximum

Name:	lxp_ConstructionLoanCommitmentToLendAmountMaximum
Namespace Prefix:	lxp
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Finite Lived Intangible Asset Acquired Customer Relationships

+ Details

Name:	lxp_FiniteLivedIntangibleAssetAcquiredCustomerRelationships
Namespace Prefix:	lxp
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Investments in Real Estate and Real Estate Under Construction [Line Items]

+ Details

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

- Definition

Lease Term

+ Details

Name:	lxp_LeaseTerm
Namespace Prefix:	lxp
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

- Definition

Property Purchase Price

+ Details

Name:	lxp_PropertyPurchasePrice
Namespace Prefix:	lxp
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Real Estate Investment Capitalized Interest

+ Details

Name:	lxp_RealEstateInvestmentCapitalizedInterest
Namespace Prefix:	lxp
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Sale Leaseback Transaction Payment

+ Details

Name:	lxp_SaleLeasebackTransactionPayment
Namespace Prefix:	lxp
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141
-Paragraph 51
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 59
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=6909708&loc=d3e1043-128460

+ Details

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

- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 21
-Paragraph 16, 20
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Interest rate stated in the contractual debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The current amount of expenditures for a real estate project that has not yet been completed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.10)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_DevelopmentInProcess
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

This element represents the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of real estate held for productive use. This excludes land held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=6361293&loc=d3e6812-107765

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of square footage related to a real estate property.

+ Details

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Namespace Prefix:	us-gaap
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

Investments in Real Estate and Real Estate Under Construction (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	6 Months Ended
	Feb. 28, 2010	Jun. 30, 2011	Dec. 31, 2010
Investments in Real Estate and Real Estate Under Construction [Line Items]
Business Combination, Acquisition Related Costs		$ 124
Development in Process		7,251	11,258
Real Estate Investment Capitalized Interest		56
Sale Leaseback Transaction Payment	3,275
Initial Cost Basis		94,661
Land		8,568
Building and Improvements		66,320
Lease in-place Value		13,789
Customer Relationships Value		5,984
Office Property [Member] \| Lender Subsidiary [Member] \| Saint Joseph Missouri [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Square Feet		99,000
Maximum Loan Commitment		17,991
Estimated Purchase Price		17,991
Lease Term		15
Office Property [Member] \| Lender Subsidiary [Member] \| Huntington West Virginia [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Square Feet		70,000
Maximum Loan Commitment		11,826
Estimated Purchase Price		13,000
Lease Term		15
Office Property [Member] \| Rock Hill South Carolina [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Initial Cost Basis		7,395
Land		551
Building and Improvements		4,313
Lease in-place Value		1,853
Customer Relationships Value		678
Office Property [Member] \| Allen Texas [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Initial Cost Basis		36,304
Land		5,591
Building and Improvements		21,607
Lease in-place Value		5,127
Customer Relationships Value		3,979
Industrial Property [Member] \| Lender Subsidiary [Member] \| Shreveport Louisiana [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Square Feet		257,000
Maximum Loan Commitment		2,520
Estimated Purchase Price		13,064
Lease Term		10
Industrial Property [Member] \| Byhalia, Mississippi [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Initial Cost Basis		27,492
Land		1,005
Building and Improvements		21,483
Lease in-place Value		4,097
Customer Relationships Value		907
Industrial Property [Member] \| Shelby, North Carolina [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Initial Cost Basis		23,470
Land		1,421
Building and Improvements		18,917
Lease in-place Value		2,712
Customer Relationships Value		420
Lender Subsidiary [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Square Feet		426,000
Maximum Loan Commitment		32,337
Estimated Purchase Price		44,055
Mortgages [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Debt Instrument, Face Amount	$ 2,450
Debt Instrument, Interest Rate, Stated Percentage	7.50%