LXP Industrial Trust (LXP) 10-Q 7 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	4-May-15
Document and Entity Information [Abstract]
Entity Registrant Name	LEXINGTON REALTY TRUST
Entity Central Index Key	910108
Current Fiscal Year End Date	-19
Entity Well-known Seasoned User	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		235,940,610
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	FALSE
Document Period Ended Date	31-Mar-15

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Assets:
Real estate, at cost	$3,828,966,000	$3,671,560,000
Real estate - intangible assets	732,080,000	705,566,000
Investments in real estate under construction	125,571,000	106,238,000
Real estate, gross	4,686,617,000	4,483,364,000
Less: accumulated depreciation and amortization	1,235,733,000	1,196,114,000
Real estate, net	3,450,884,000	3,287,250,000
Assets held for sale	0	3,379,000
Cash and cash equivalents	54,821,000	191,077,000
Restricted cash	17,290,000	17,379,000
Investment in and advances to non-consolidated entities	21,836,000	19,402,000
Deferred expenses, net	67,827,000	65,860,000
Loans receivable, net	105,827,000	105,635,000
Rent receivable – current	9,692,000	6,311,000
Rent receivable – deferred	74,541,000	61,372,000
Other assets	24,240,000	20,229,000
Total assets	3,826,958,000	3,777,894,000
Liabilities:
Mortgages and notes payable	901,328,000	945,216,000
Credit facility borrowings	93,000,000	0
Term loans payable	505,000,000	505,000,000
Senior notes payable	497,743,000	497,675,000
Convertible notes payable	15,152,000	15,664,000
Trust preferred securities	129,120,000	129,120,000
Dividends payable	43,202,000	42,864,000
Liabilities held for sale	0	2,843,000
Accounts payable and other liabilities	32,915,000	37,740,000
Accrued interest payable	13,112,000	8,301,000
Deferred revenue - including below market leases, net	66,162,000	68,215,000
Prepaid rent	23,745,000	16,336,000
Total liabilities	2,320,479,000	2,268,974,000
Commitments and contingencies
Equity:
Common shares, par value $0.0001 per share; authorized 400,000,000 shares, 234,819,421 and 233,278,037 shares issued and outstanding in 2015 and 2014, respectively	23,000	23,000
Additional paid-in-capital	2,772,841,000	2,763,374,000
Accumulated distributions in excess of net income	-1,379,929,000	-1,372,051,000
Accumulated other comprehensive income (loss)	-3,692,000	404,000
Total shareholders’ equity	1,483,259,000	1,485,766,000
Noncontrolling interests	23,220,000	23,154,000
Total equity	1,506,479,000	1,508,920,000
Total liabilities and equity	3,826,958,000	3,777,894,000
Series C [Member] | Cumulative Convertible [Member]
Equity:
Series C Cumulative Convertible Preferred, liquidation preference $96,770; 1,935,400 shares issued and outstanding	$94,016,000	$94,016,000

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Equity:
Preferred shares, par value (in dollars per share)	$0.00	$0.00
Preferred shares, authorized shares (in shares)	100,000,000	100,000,000
Common shares, par value (in dollars per share)	$0.00	$0.00
Common shares, authorized shares (in shares)	400,000,000	400,000,000
Common shares, shares issued (in shares)	234,819,421	233,278,037
Common shares, outstanding (in shares)	234,819,421	233,278,037
Series C [Member] | Cumulative Convertible [Member]
Equity:
Preferred shares, liquidation preference	$96,770	$96,770
Preferred shares, shares issued (in shares)	1,935,400	1,935,400
Preferred shares, shares outstanding (in shares)	1,935,400	1,935,400

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Gross revenues:
Rental	$100,016	$96,365
Advisory and incentive fees	146	122
Tenant reimbursements	8,426	7,651
Total gross revenues	108,588	104,138
Expense applicable to revenues:
Depreciation and amortization	-40,274	-37,947
Property operating	-16,582	-15,621
General and administrative	-7,822	-8,037
Non-operating income	2,468	2,951
Interest and amortization expense	-23,003	-23,816
Debt satisfaction gains (charges), net	10,375	-3,304
Impairment charges	-1,139	-16,400
Gain on sale of property	148	0
Income before provision for income taxes, equity in earnings of non-consolidated entities and discontinued operations	32,759	1,964
Provision for income taxes	-441	-591
Equity in earnings of non-consolidated entities	366	281
Income from continuing operations	32,684	1,654
Discontinued operations:
Income from discontinued operations	110	2,487
Provision for income taxes	0	-18
Gain on sale of property	1,577	0
Impairment charges	0	-2,309
Total discontinued operations	1,687	160
Net income	34,371	1,814
Less net income attributable to noncontrolling interests	-866	-928
Net income attributable to Lexington Realty Trust shareholders	33,505	886
Allocation to participating securities	-104	-153
Net income (loss) attributable to common shareholders	31,829	-839
Income (loss) per common share b basic:
Income (loss) from continuing operations (in USD per share)	$0.13	$0
Income from discontinued operations (in USD per share)	$0.01	$0
Net income (loss) attributable to common shareholders	$0.14	$0
Weighted-average common shares outstanding b basic	232,525,675	227,156,690
Income (loss) per common share b diluted:
Income (loss) from continuing operations (USD per share)	$0.13	$0
Income from discontinued operations (USD per share)	$0.01	$0
Net income (loss) attributable to common shareholders (USD per share)	$0.14	$0
Weighted-average common shares outstanding b diluted	232,957,265	227,156,690
Amounts attributable to common shareholders:
Income (loss) from continuing operations	30,142	-980
Income from discontinued operations	1,687	141
Net income (loss) attributable to common shareholders	31,829	-839
Series C [Member]
Discontinued operations:
Dividends attributable to preferred shares b Series C	($1,572)	($1,572)

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$34,371	$1,814
Other comprehensive loss:
Change in unrealized loss on interest rate swaps, net	-4,096	-512
Other comprehensive loss	-4,096	-512
Comprehensive income	30,275	1,302
Comprehensive income attributable to noncontrolling interests	-866	-928
Comprehensive income attributable to Lexington Realty Trust shareholders	$29,409	$374

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Unaudited) (USD $)	Total	Preferred Shares [Member]	Common Shares [Member]	Additional Paid-in-Capital [Member]	Accumulated Distributions in Excess of Net Income [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Non-controlling Interests [Member]
In Thousands, unless otherwise specified
Beginning Balance at Dec. 31, 2013	$1,539,483	$94,016	$23	$2,717,787	($1,300,527)	$4,439	$23,745
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redemption of noncontrolling OP units	-1,962			-993			-969
Issuance of common shares upon conversion of convertible notes	3,149			3,149
Issuance of common shares and deferred compensation amortization, net	6,694			6,694
Dividends/distributions	-40,415				-39,477		-938
Net income	1,814				886		928
Other comprehensive loss	-512					-512
Ending Balance at Mar. 31, 2014	1,508,251	94,016	23	2,726,637	-1,339,118	3,927	22,766
Beginning Balance at Dec. 31, 2014	1,508,920	94,016	23	2,763,374	-1,372,051	404	23,154
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common shares upon conversion of convertible notes	652			652
Issuance of common shares and deferred compensation amortization, net	8,815			8,815
Dividends/distributions	-42,183				-41,383		-800
Net income	34,371				33,505		866
Other comprehensive loss	-4,096					-4,096
Ending Balance at Mar. 31, 2015	$1,506,479	$94,016	$23	$2,772,841	($1,379,929)	($3,692)	$23,220

CONDENSED_CONSOLIDATED_STATEME3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Cash Flows [Abstract]
Net cash provided by operating activities:	$57,921	$59,942
Cash flows from investing activities:
Acquisition of real estate, including intangible assets	-197,275	-38,643
Investment in real estate under construction	-30,778	-46,376
Capital expenditures	-1,717	-3,051
Net proceeds from sale of properties	4,433	325
Principal payments received on loans receivable	64	401
Investment in loans receivable	-83	-20,267
Investments in non-consolidated entity	-3,032	0
Distributions from non-consolidated entities in excess of accumulated earnings	221	315
Increase in deferred leasing costs	-1,420	-3,985
Change in escrow deposits and restricted cash	-1,540	-801
Real estate deposits, net	-1,999	-308
Net cash used in investing activities	-233,126	-112,390
Cash flows from financing activities:
Dividends to common and preferred shareholders	-41,045	-39,098
Conversion of convertible notes	0	-62
Principal amortization payments	-13,867	-14,139
Principal payments on debt, excluding normal amortization	-83,320	-19,515
Change in credit facility borrowings, net	93,000	-6,000
Proceeds from term loans	0	99,000
Increase in deferred financing costs	-2,444	-482
Proceeds of mortgages and notes payable	80,843	0
Cash distributions to noncontrolling interests	-800	-938
Redemption of noncontrolling interests	0	-1,962
Issuance of common shares, net	6,582	4,433
Net cash provided by financing activities	38,949	21,237
Change in cash and cash equivalents	-136,256	-31,211
Cash and cash equivalents, at beginning of period	191,077	77,261
Cash and cash equivalents, at end of period	$54,821	$46,050

The_Company_and_Financial_Stat

The Company and Financial Statement Presentation	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
The Company and Financial Statement Presentation	The Company and Financial Statement Presentation
	Lexington Realty Trust (the “Company”) is a Maryland real estate investment trust (“REIT”) that owns a diversified portfolio of equity and debt investments in single-tenant commercial properties and land. A majority of these properties and all land interests are subject to net or similar leases, where the tenant bears all or substantially all of the costs, including cost increases, for real estate taxes, utilities, insurance and ordinary repairs. The Company also provides investment advisory and asset management services to investors in the single-tenant area.
	As of March 31, 2015, the Company had ownership interests in approximately 215 consolidated real estate properties, located in 40 states. The properties in which the Company has an interest are leased to tenants in various industries, including service, technology, finance/insurance, automotive and transportation/logistics.
	The Company believes it has qualified as a REIT under the Internal Revenue Code of 1986, as amended (the “Code”). Accordingly, the Company will not be subject to federal income tax, provided that distributions to its shareholders equal at least the amount of its REIT taxable income as defined under the Code. The Company is permitted to participate in certain activities in order to maintain its qualification as a REIT, so long as these activities are conducted in entities which elect to be treated as taxable REIT subsidiaries (“TRS”) under the Code. As such, the TRS are subject to federal income taxes on the income from these activities.
	The Company conducts its operations either directly or indirectly through (1) property owner subsidiaries and lender subsidiaries, which are single purpose entities, (2) an operating partnership, Lepercq Corporate Income Fund L.P. (“LCIF”), in which the Company is the sole unit holder of the general partner and the sole unit holder of the limited partner that holds a majority of the limited partner interests, (3) a wholly-owned TRS, and (4) investments in joint ventures. On December 30, 2013, another operating partnership, Lepercq Corporate Income Fund II L.P. (“LCIF II”), was merged with and into LCIF with LCIF as the surviving entity. References to “OP Units” refer to units of limited partner interests in LCIF and LCIF II, as applicable. Property owner subsidiaries are landlords under leases for properties in which the Company has an interest and/or borrowers under loan agreements secured by properties in which the Company has an investment and lender subsidiaries are lenders under loan agreements where the Company made an investment in a loan asset, but in all cases are separate and distinct legal entities. The assets and credit of a property owner subsidiary or a lender subsidiary are not available to satisfy the debt and other obligations of any other person, including any other property owner subsidiary, or lender subsidiary or any other affiliate.
	Basis of Presentation and Consolidation. The Company's unaudited condensed consolidated financial statements are prepared on the accrual basis of accounting in accordance with U.S. generally accepted accounting principles (“GAAP”). The financial statements reflect the accounts of the Company and its consolidated subsidiaries. The Company consolidates its wholly-owned subsidiaries and its partnerships and joint ventures which it controls (1) through voting rights or similar rights or (2) by means other than voting rights if the Company is the primary beneficiary of a variable interest entity ("VIE"). Entities which the Company does not control and entities which are VIEs in which the Company is not the primary beneficiary are accounted for under appropriate GAAP.
	The financial statements contained in this Quarterly Report on Form 10-Q for the three months ended March 31, 2015 (this “Quarterly Report”) have been prepared by the Company in accordance with GAAP for interim financial information and the applicable rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all information and footnotes required by GAAP for complete financial statements. However, in the opinion of management, the interim financial statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the results of the periods presented. The results of operations for the three months ended March 31, 2015 and 2014, are not necessarily indicative of the results that may be expected for the full year. These unaudited condensed consolidated financial statements should be read in conjunction with the Company's audited consolidated financial statements and notes thereto included in the Company's Form 10-K for the year ended December 31, 2014 filed with the SEC on February 26, 2015 (“Annual Report”).
	Use of Estimates. Management has made a number of significant estimates and assumptions relating to the reporting of assets and liabilities, the disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses to prepare these unaudited condensed consolidated financial statements in conformity with GAAP. These estimates and assumptions are based on management's best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. The current economic environment has increased the degree of uncertainty inherent in these estimates and assumptions. Management adjusts such estimates when facts and circumstances dictate. The most significant estimates made include the recoverability of accounts receivable, the allocation of property purchase price to tangible and intangible assets acquired and liabilities assumed, the determination of VIEs and which entities should be consolidated, the determination of impairment of long-lived assets, loans receivable and equity method investments, the valuation of derivative financial instruments and the useful lives of long-lived assets. Actual results could differ materially from those estimates.
	Fair Value Measurements. The Company follows the guidance in the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification Topic 820, Fair Value Measurements and Disclosures, as amended (“Topic 820”), to determine the fair value of financial and non-financial instruments. Topic 820 defines fair value, establishes a framework for measuring fair value in GAAP and expands disclosures about fair value measurements. Topic 820 establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels: Level 1 - quoted prices (unadjusted) in active markets that are accessible at the measurement date for assets or liabilities; Level 2 - observable prices that are based on inputs not quoted in active markets, but corroborated by market data; and Level 3 - unobservable inputs, which are used when little or no market data is available. The fair value hierarchy gives the highest priority to Level 1 inputs and the lowest priority to Level 3 inputs. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible, as well as considering counterparty credit risk. The Company has formally elected to apply the portfolio exception within Topic 820 with respect to measuring counterparty risk for all of its derivative transactions subject to master netting arrangements.
	Acquisition, Development and Construction Arrangements. The Company evaluates loans receivable where the Company participates in residual profits through loan provisions or other contracts to ascertain whether the Company has the same risks and rewards as an owner or a joint venture partner. Where the Company concludes that such arrangements are more appropriately treated as an investment in real estate, the Company reflects such loan receivable as an equity investment in real estate under construction in the unaudited condensed consolidated balance sheets. In these cases, no interest income is recorded on the loan receivable and the Company capitalizes interest during the construction period. In arrangements where the Company engages a developer to construct a property or provides funds to a tenant to develop a property, the Company will capitalize the funds provided to the developer/tenant and internal costs of interest and real estate taxes, if applicable, during the construction period.
	Reclassifications. Certain amounts included in the 2014 unaudited condensed consolidated financial statements have been reclassified, primarily relating to discontinued operations, to conform to the 2015 presentation.
	Recently Issued Accounting Guidance. In April 2014, the FASB issued Accounting Standards Update No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which changes the criteria for reporting discontinued operations and improves financial statement disclosures. Under this guidance, only disposals representing a strategic shift in operations that have a major effect on an organization's operations and financial results should be presented as discontinued operations. The Company adopted this guidance effective January 1, 2015. The guidance requires the Company to continue to classify any property disposal or property classified as held for sale as of December 31, 2014 as discontinued operations prospectively. Therefore, the revenues and expenses related to these properties are presented as discontinued operations as of March 31, 2015. The Company did not classify any additional properties as discontinued operations subsequent to December 31, 2014 as the dispositions did not represent a strategic shift in operations. The implementation of this guidance did not have a material impact on the Company's financial position, results of operations or cash flows.
	In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606), which amends the guidance for revenue recognition to eliminate the industry-specific revenue recognition guidance and replace it with a principle based approach for determining revenue recognition. The new guidance is effective for reporting periods beginning after December 15, 2016. The Company is currently evaluating the impact of the adoption of the new guidance on its unaudited condensed consolidated financial statements.
	In February 2015, the FASB issued Accounting Standards Update 2015-02, Consolidation (Topic 810) - Amendments to the Consolidation Analysis, which provides guidance on the consolidation evaluation for reporting organizations that are required to evaluate whether they should consolidate certain legal entities. In accordance with the guidance, all legal entities are subject to reevaluation under the revised consolidation model. The guidance is effective in the first quarter of 2016 and early adoption is allowed. The Company is currently evaluating the impact of the adoption of this new guidance on its unaudited condensed consolidated financial statements.
	In April 2015, the FASB issued Accounting Standards Update 2015-03, Simplifying the Presentation of Debt Issuance Costs, which requires that debt issuance costs be presented on the balance sheet as a direct deduction from the carrying amount of the related debt liability. The guidance is effective in the first quarter of 2016 and requires retrospective application. The Company is currently evaluating the impact of the adoption of this new guidance on its unaudited condensed consolidated financial statements.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share
	A significant portion of the Company's non-vested share-based payment awards are considered participating securities and as such, the Company is required to use the two-class method for the computation of basic and diluted earnings per share. Under the two-class computation method, net losses are not allocated to participating securities unless the holder of the security has a contractual obligation to share in the losses. The non-vested share-based payment awards are not allocated losses as the awards do not have a contractual obligation to share in losses of the Company.
	The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share computations for the three months ended March 31, 2015 and 2014:
		Three months ended March 31,
		2015		2014
	BASIC
	Income (loss) from continuing operations attributable to common shareholders	$	30,142	$	(980	)
	Income from discontinued operations attributable to common shareholders	1,687		141
	Net income (loss) attributable to common shareholders	$	31,829	$	(839	)
	Weighted-average number of common shares outstanding	232,525,675		227,156,690
	Income (loss) per common share:
	Income (loss) from continuing operations	$	0.13	$	—
	Income from discontinued operations	0.01		—
	Net income (loss) attributable to common shareholders	$	0.14	$	—
	DILUTED
	Income (loss) from continuing operations attributable to common shareholders - basic	$	30,142	$	(980	)
	Impact of assumed conversions:
	Share options	—		—
	Income (loss) from continuing operations attributable to common shareholders	30,142		(980		)
	Income from discontinued operations attributable to common shareholders - basic	1,687		141
	Impact of assumed conversions:
	Share options	—		—
	Income from discontinued operations attributable to common shareholders	1,687		141
	Net income (loss) attributable to common shareholders	$	31,829	$	(839	)
	Weighted-average common shares outstanding - basic	232,525,675		227,156,690
	Effect of dilutive securities:
	Share options	431,590		—
	Weighted-average common shares outstanding	232,957,265		227,156,690
	Income (loss) per common share:
	Income (loss) from continuing operations	$	0.13	$	—
	Income from discontinued operations	0.01		—
	Net income (loss) attributable to common shareholders	$	0.14	$	—
	For per common share amounts, all incremental shares are considered anti-dilutive for periods that have a loss from continuing operations attributable to common shareholders. In addition, other common share equivalents may be anti-dilutive in certain periods.

Investments_in_Real_Estate_and

Investments in Real Estate and Real Estate Under Construction	3 Months Ended
	Mar. 31, 2015
Real Estate [Abstract]
Investments in Real Estate and Real Estate Under Construction	Investments in Real Estate and Real Estate Under Construction
	The Company, through property owner subsidiaries, completed the following acquisitions, each of which is subject to a lease having a term in excess of ten years (an “LTL”), during the three months ended March 31, 2015:
	Property Type	Location	Acquisition/Completion Date	Initial Cost Basis			Lease Expiration	Land and Land Estate			Building and Improvements		Lease in-place Value Intangible
	LTL - Office	Auburn Hills, MI	Mar-15	$	40,025		Mar-29	$	4,416		$	30,012	$	5,597
	LTL - Industrial	Houston, TX	Mar-15	$	28,650		Mar-35	$	4,674		$	19,540	$	4,436
	LTL - Industrial	Brookshire, TX	Mar-15	$	22,450		Mar-35	$	2,388		$	16,614	$	3,448
	LTL - Industrial	Canton, MS	Mar-15	$	89,300		Feb-27	$	5,077		$	71,289	$	12,934
	LTL - Land/Infrastructure	Venice, FL	Jan-15	$	16,850		Jan-55	$	4,696		$	11,753	$	401
				$	197,275			$	21,251		$	149,208	$	26,816
	The Company recognized aggregate acquisition and pursuit expenses of $468 and $368 for the three months ended March 31, 2015 and 2014, respectively, which are included as property operating expenses within the Company's unaudited condensed consolidated statements of operations.
	The Company is engaged in various forms of build-to-suit development activities. The Company, through lender subsidiaries and property owner subsidiaries, may enter into the following acquisition, development and construction arrangements: (1) lend funds to construct build-to-suit projects subject to a single-tenant lease and agree to purchase the properties upon completion of construction and commencement of a single-tenant lease, (2) hire developers to construct built-to-suit projects on owned properties leased to single tenants, (3) fund the construction of build-to-suit projects on owned properties pursuant to the terms in single-tenant lease agreements or (4) enter into purchase and sale agreements with developers to acquire single-tenant build-to-suit properties upon completion.
	As of March 31, 2015, the Company had the following development arrangements outstanding:
	Location	Property Type	Square Feet			Expected Maximum Commitment/Contribution				Lease Term (Years)	Estimated Completion Date
	Oak Creek, WI	LTL - Industrial	164,000			$	22,609			20	2Q 15
	Thomson, GA	LTL - Industrial	208,000			$	10,245			15	2Q 15
	Richmond, VA	LTL - Office	330,000			$	110,137			15	3Q 15
	Lake Jackson, TX	LTL - Office	664,000			$	166,164			20	4Q 16
			1,366,000			$	309,155
	The Company has variable interests in certain developer entities constructing the facilities but is not the primary beneficiary of the entities as the Company does not have a controlling financial interest. As of March 31, 2015 and December 31, 2014, the Company's aggregate investment in development arrangements was $125,571 and $106,238, respectively, which includes $4,106 and $2,828 of capitalized interest, respectively, and is presented as investments in real estate under construction in the accompanying unaudited condensed consolidated balance sheets.
	In addition, the Company has committed to acquire the following properties:
	Location	Property Type	Estimated Acquisition Cost				Estimated Acquisition Date		Lease Term (Years)
	Richland, WA	LTL - Industrial	$	155,000			4Q 15		20
	Detroit, MI	LTL - Industrial	$	29,680			1Q 16		20
			$	184,680
	The Company can give no assurances that any of these acquisitions under contract or build-to-suit transactions will be consummated.

Property_Dispositions_Disconti

Property Dispositions, Discontinued Operations and Real Estate Impairment	3 Months Ended
	Mar. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Property Dispositions, Discontinued Operations and Real Estate Impairment	Property Dispositions, Discontinued Operations and Real Estate Impairment
	During the three months ended March 31, 2015, the Company disposed of its interest in an office property to an unrelated third party for a gross disposition price of $4,950, which was held for sale at December 31, 2014, and conveyed two office properties, along with their escrow deposits, in satisfaction of a $30,293 non-recourse secured mortgage loan. In addition, during the three months ended March 31, 2015, the Company disposed of a vacant retail property, with a zero basis, upon the expiration of the related ground lease. During the three months ended March 31, 2014, the Company disposed of its interest in one vacant retail property to an unrelated third party for a gross disposition price of $350. During the three months ended March 31, 2015, the Company recognized aggregate gains on sales of properties of $1,725. In addition, during the three months ended March 31, 2015, the Company recognized aggregate net gains on debt satisfaction of $10,466 relating to disposed properties. The results of operations for properties disposed of in 2015, that were not classified as held for sale as of December 31, 2014, are included within continuing operations in the unaudited condensed consolidated financial statements in accordance with recent guidance issued by the FASB. As of March 31, 2015, the Company had no properties classified as held for sale.
	The following presents the operating results for the properties sold for the applicable periods:
		Three months ended March 31,
		2015		2014
	Total gross revenues	$	163	$	9,275
	Pre-tax income, including gains on sales	$	12,282	$	178
	The Company assesses on a regular basis whether there are any indicators that the carrying value of its real estate assets may be impaired. Potential indicators may include an increase in vacancy at a property, tenant reduction in utilization of a property, tenant financial instability and the potential sale or transfer of the property in the near future. An asset is determined to be impaired if the asset's carrying value is in excess of its estimated fair value. During the three months ended March 31, 2014, the Company recognized $2,309 of impairment charges in discontinued operations relating to real estate assets that were disposed of below their carrying value or classified as held for sale.
	In addition, the Company recognized impairment charges of $1,139 and $16,400 in continuing operations during the three months ended March 31, 2015 and 2014. The Company determined that the expected undiscounted cash flows based upon the revised estimated holding periods of certain assets were below the current carrying values. Accordingly, the Company reduced the carrying value of the properties to their estimated then fair values of $475 and $5,574, respectively. The property impaired during the three months ended March 31, 2014 is for an office property in Rochester, New York, which is encumbered by a $17,234 non-recourse secured mortgage loan as of March 31, 2015.

Loans_Receivable

Loans Receivable	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Loans Receivable	Loans Receivable
	As of March 31, 2015 and December 31, 2014, the Company's loans receivable were comprised primarily of first and second mortgage loans and mezzanine loans on real estate.
	The following is a summary of our loans receivable as of March 31, 2015 and December 31, 2014:
		Loan carrying-value(1)
	Loan		3/31/15		12/31/14		Interest Rate		Maturity Date
	Westmont, IL(2)		$	12,221	$	12,152	6.45	%	Oct-15
	Southfield, MI(3)		3,310		3,296		4.55	%	Feb-15
	Austin, TX		2,914		2,800		16	%	Oct-18
	Kennewick, WA		85,314		85,254		9	%	May-22
	Other		2,068		2,133		8	%	2021-2022
			$	105,827	$	105,635
	-1	Loan carrying value includes accrued interest and is net of origination costs and loan losses, if any.
	-2	Borrowers are in default and the Company commenced foreclosure proceedings. The tenant at the office property constituting the collateral terminated its lease. The Company recognized an impairment of $13,939 during 2013. During the three months ended March 31, 2015 and 2014, the Company recognized $0 and $425 of interest income relating to the impaired loan, respectively, and the loan had an average recorded investment value of $12,510 and $12,561, respectively. At March 31, 2015, the impaired loan receivable had a contractual unpaid balance of $29,455.
	-3	The Company recorded a $2,500 loan loss in the fourth quarter of 2014 as the Company determined it was probable that it would not collect the amount owed at maturity. During the three months ended March 31, 2015, the Company recognized $14 of interest income relating to the impaired loan and the loan had an average recorded investment of $3,303. At March 31, 2015, the impaired loan receivable had a contractual unpaid balance of $6,083. See note 15.
	The Company had two types of financing receivables: loans receivable and a capitalized financing lease. The Company determined that its financing receivables operate within one portfolio segment as they are within the same industry and use the same impairment methodology. The Company's loans receivable are secured by commercial real estate assets and the capitalized financing lease, for a commercial office property located in Greenville, South Carolina, was sold in December 2014. In addition, the Company assesses all financing receivables for impairment, when warranted, based on an individual analysis of each receivable.
	The Company's financing receivables operate within one class of financing receivables as these assets (1) are collateralized by commercial real estate and (2) similar metrics are used to monitor the risk and performance of these assets. The Company's management uses credit quality indicators to monitor financing receivables such as quality of collateral, the underlying tenant's credit rating and collection experience. As of March 31, 2015, the financing receivables were performing as anticipated and there were no significant delinquent amounts outstanding, other than as disclosed above.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Fair Value Measurements	Fair Value Measurements
	The following tables present the Company's assets and liabilities from continuing operations measured at fair value on a recurring and non-recurring basis as of March 31, 2015 and December 31, 2014, aggregated by the level in the fair value hierarchy within which those measurements fall:
		Balance			Fair Value Measurements Using
	Description	March 31, 2015			(Level 1)		(Level 2)			(Level 3)
	Impaired real estate assets*	$	475		$	—	$	—		$	475
	Interest rate swap liabilities	$	(3,692	)	$	—	$	(3,692	)	$	—
		Balance			Fair Value Measurements Using
	Description	December 31, 2014			(Level 1)		(Level 2)			(Level 3)
	Interest rate swap assets	$	1,153		$	—	$	1,153		$	—
	Impaired real estate assets*	$	25,679		$	—	$	—		$	25,679
	Impaired loan receivable*	$	3,296		$	—	$	—		$	3,296
	Interest rate swap liabilities	$	(749	)	$	—	$	(749	)	$	—
	*Represents a non-recurring fair value measurement.
	The table below sets forth the carrying amounts and estimated fair values of the Company's financial instruments as of March 31, 2015 and December 31, 2014.
		As of March 31, 2015					As of December 31, 2014
		Carrying			Fair Value		Carrying			Fair Value
		Amount					Amount
	Assets
	Loans Receivable (Level 3)	$	105,827		$	104,599	$	105,635		$	105,061
	Liabilities
	Debt (Level 3)	$	2,141,343		$	2,148,262	$	2,092,675		$	2,091,364
	The majority of the inputs used to value the Company's interest rate swaps fall within Level 2 of the fair value hierarchy, such as observable market interest rate curves; however, the credit valuation associated with the interest rate swaps utilizes Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by the Company and its counterparties. As of March 31, 2015 and December 31, 2014, the Company determined that the credit valuation adjustment relative to the overall fair value of the interest rate swaps was not significant. As a result, the interest rate swaps have been classified in Level 2 of the fair value hierarchy.
	The Company estimates the fair value of its real estate assets, including non-consolidated real estate assets, by using income and market valuation techniques. The Company may estimate fair values using market information such as broker opinions of value, recent sales data for similar assets or discounted cash flow models, which primarily rely on Level 3 inputs. The cash flow models include estimated cash inflows and outflows over a specified holding period. These cash flows may include contractual rental revenues, projected future rental revenues and expenses and forecasted tenant improvements and lease commissions based upon market conditions determined through discussion with local real estate professionals, experience the Company has with its other owned properties in such markets and expectations for growth. Capitalization rates and discount rates utilized in these models are estimated by management based upon rates that management believes to be within a reasonable range of current market rates for the respective properties based upon an analysis of factors such as property and tenant quality, geographical location and local supply and demand observations. To the extent the Company underestimates forecasted cash outflows (tenant improvements, lease commissions and operating costs) or overestimates forecasted cash inflows (rental revenue rates), the estimated fair value of its real estate assets could be overstated.
	The Company estimates the fair values of its loans receivable by using an estimated discounted cash flow analysis and/or the estimated value of the underlying collateral using Level 3 inputs consisting of scheduled cash flows and discount rate estimates to approximate those that a willing buyer and seller might use. The fair value of the Company's debt is estimated by using a discounted cash flow analysis using Level 3 inputs, based upon estimates of market interest rates.
	Fair values cannot be determined with precision, may not be substantiated by comparison to quoted prices in active markets and may not be realized upon sale. Additionally, there are inherent uncertainties in any fair value measurement technique, and changes in the underlying assumptions used, including discount rates, liquidity risks and estimates of future cash flows, could significantly affect the fair value measurement amounts.
	Cash Equivalents, Restricted Cash, Accounts Receivable and Accounts Payable. The Company estimates that the fair value of cash equivalents, restricted cash, accounts receivable and accounts payable approximates carrying value due to the relatively short maturity of the instruments.

Investment_in_and_Advances_to_

Investment in and Advances to Non-Consolidated Entities	3 Months Ended
	Mar. 31, 2015
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Investment in and Advances to Non-Consolidated Entities	Investment in and Advances to Non-Consolidated Entities
	As of March 31, 2015, the Company had ownership interests ranging from 15% to 40% in certain non-consolidated entities, which primarily own single-tenant net-leased assets. The acquisition of these assets were partially funded through non-recourse mortgage debt with an aggregate balance of $61,735 at March 31, 2015 (the Company's proportionate share was $14,152) with rates ranging from 3.7% to 5.2%.
	In November 2014, the Company formed a joint venture to construct a private school in Houston, Texas. As of March 31, 2015, the Company had a 25% interest in the joint venture. The anticipated total construction cost is $86,491. The Company may provide construction financing to the joint venture up to $56,686. Upon completion, the property will be net leased for a 20-year term.
	In August 2013, the Company invested $5,000 in a joint venture, which acquired the fee interest and the related office building improvements of a property in Baltimore, Maryland. Beginning in October 2015, the Company has the right to require the redemption of its interest in the joint venture in exchange for a distribution to the Company of the fee interest, which is leased for a 99-year term to the joint venture.

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt	Debt
	The Company, through property owner subsidiaries, had outstanding non-recourse secured mortgages and notes payable of $901,328 and $945,216 as of March 31, 2015 and December 31, 2014, respectively. Interest rates, including imputed rates on mortgages and notes payable, ranged from 2.2% to 8.5% at March 31, 2015 and December 31, 2014 and the mortgages and notes payables mature between 2015 and 2028 as of March 31, 2015. The weighted-average interest rate was 5.0% and 5.2% at March 31, 2015 and December 31, 2014, respectively.
	The Company had the following senior notes outstanding as of March 31, 2015:
	Issue Date		Face Amount			Interest Rate		Maturity Date	Issue Price
	May-14		$	250,000		4.4	%	Jun-24	99.883	%
	Jun-13		250,000			4.25	%	Jun-23	99.026	%
			$	500,000
	Each series of the senior notes is unsecured and pays interest semi-annually in arrears. The Company may redeem the notes at its option at any time prior to maturity in whole or in part by paying the principal amount of the notes being redeemed plus a premium.
	The Company has a $400,000 unsecured revolving credit facility with KeyBank National Association (“KeyBank”), as agent. The unsecured revolving credit facility matures in February 2017 but can be extended until February 2018 at the Company’s option. The interest rate under the unsecured revolving credit facility ranges from LIBOR plus 0.95% to 1.725% (1.15% as of March 31, 2015). At March 31, 2015, the unsecured revolving credit facility had $93,000 outstanding, outstanding letters of credit of $12,144 and availability of $294,856, subject to covenant compliance.
	In 2013, the Company procured a five-year $250,000 unsecured term loan facility from KeyBank, as agent. The unsecured term loan matures in February 2018, may be prepaid without penalty and requires regular payments of interest only at interest rates ranging from LIBOR plus 1.10% to 2.10% (1.35% as of March 31, 2015). The Company has aggregate interest-rate swap agreements to fix the LIBOR component at a weighted-average rate of 1.09% through February 2018 on the $250,000 of outstanding LIBOR-based borrowings.
	The Company has a $255,000 unsecured term loan from Wells Fargo Bank, National Association (“Wells Fargo”), as agent. The term loan matures in January 2019. The term loan requires regular payments of interest only at interest rates ranging from LIBOR plus 1.50% to 2.25% (1.75% as of March 31, 2015). The Company may prepay any outstanding borrowings under the term loan facility at a premium through January 12, 2016 and at par thereafter. The Company has entered into interest-rate swap agreements to fix the LIBOR component at a weighted-average rate of 1.42% through January 2019 on the $255,000 of outstanding LIBOR-based borrowings.
	The Company was in compliance with all applicable financial covenants contained in its corporate level debt agreements at March 31, 2015.
	During 2010, the Company issued $115,000 aggregate principal amount of 6.00% Convertible Guaranteed Notes due 2030. The notes pay interest semi-annually in arrears and mature in January 2030. The holders of the notes may require the Company to repurchase their notes in January 2017, January 2020 and January 2025 for cash equal to 100% of the notes to be repurchased, plus any accrued and unpaid interest. The Company may not redeem any notes prior to January 2017, except to preserve its REIT status. The notes have a current conversion rate of 151.5965 common shares per one thousand principal amount of the notes, representing a conversion price of approximately $6.60 per common share. The conversion rate is subject to adjustment under certain circumstances, including increases in the Company's dividend rate above a certain threshold and the issuance of stock dividends. The notes are convertible by the holders under certain circumstances for cash, common shares or a combination of cash and common shares at the Company's election. The notes are convertible prior to the close of business on the second business day immediately preceding the stated maturity date, at any time beginning in January 2029 and also upon the occurrence of specified events. During the three months ended March 31, 2015 and 2014, $600 and $2,805, respectively, aggregate principal amount of the notes were converted for 90,957 and 414,637 common shares, respectively, and aggregate cash payments of $62 in the three months ended March 31, 2014, plus accrued and unpaid interest resulting in aggregate debt satisfaction charges of $77 and $574, respectively.
	Below is a summary of additional disclosures related to the 6.00% Convertible Guaranteed Notes due 2030.
		6.00% Convertible Guaranteed Notes due 2030
	Balance Sheets:	March 31, 2015			December 31, 2014
	Principal amount of debt component	$	15,628		$	16,228
	Unamortized discount	(476		)	(564		)
	Carrying amount of debt component	$	15,152		$	15,664
	Carrying amount of equity component	$	(33,536	)	$	(33,160	)
	Effective interest rate	8.1		%	8.1		%
	Period through which discount is being amortized, put date	Jan-17			Jan-17
	Aggregate if-converted value in excess of aggregate principal amount	$	7,661		$	10,432
		Three months ended March 31,
	Statements of Operations:	2015			2014
	6.00% Convertible Guaranteed Notes
	Coupon interest	$	236		$	428
	Discount amortization	67			121
		$	303		$	549
	During the three months ended March 31, 2015 and 2014, in connection with the satisfaction of mortgage notes other than those disclosed elsewhere in these financial statements, the Company incurred debt satisfaction charges, net of $14 and $2,730, respectively, relating primarily to satisfying non-recourse mortgage debt prior to the stated maturity dates.

Derivatives_and_Hedging_Activi

Derivatives and Hedging Activities

3 Months Ended

Mar. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging Activities

Derivatives and Hedging Activities

Risk Management Objective of Using Derivatives. The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the type, amount, sources, and duration of its debt funding and the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company's derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company's known or expected cash receipts and its known or expected cash payments principally related to the Company's investments and borrowings.

Cash Flow Hedges of Interest Rate Risk. The Company's objectives in using interest rate derivatives are to add stability to interest expense, to manage its exposure to interest rate movements and therefore manage its cash outflows as it relates to the underlying debt instruments. To accomplish these objectives, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy relating to certain of its variable rate debt instruments. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount.

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income (loss) and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. The Company did not incur any ineffectiveness during the three months ended March 31, 2015 and 2014.

The Company has designated the interest-rate swap agreements with its counterparties as cash flow hedges of the risk of variability attributable to changes in the LIBOR swap rate on $505,000 of LIBOR-indexed variable-rate unsecured term loans. Accordingly, changes in the fair value of the swaps are recorded in other comprehensive income (loss) and reclassified to earnings as interest becomes receivable or payable.

Amounts reported in accumulated other comprehensive income (loss) related to derivatives will be reclassified to interest expense as interest payments are made on the term loans. During the next 12 months, the Company estimates that an additional $4,665 will be reclassified as an increase to interest expense.

As of March 31, 2015, the Company had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk:

Interest Rate Derivative

Number of Instruments

Notional

Interest Rate Swaps

10

$505,000

The table below presents the fair value of the Company's derivative financial instruments as well as their classification on the unaudited condensed consolidated balance sheets as of March 31, 2015 and December 31, 2014.

As of March 31, 2015

As of December 31, 2014

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Derivatives designated as hedging instruments

Interest Rate Swap Asset

Other Assets

$

1,153

Interest Rate Swap Liability

Accounts Payable and Other Liabilities

$

(3,692

)

Accounts Payable and Other Liabilities

$

(749

)

The tables below present the effect of the Company's derivative financial instruments on the unaudited condensed consolidated statements of operations for the three months ended March 31, 2015 and 2014.

Derivatives in Cash Flow

Amount of Gain (Loss) Recognized

Location of Loss

Amount of Loss Reclassified

in OCI on Derivatives

Reclassified from

from Accumulated OCI into

(Effective Portion)

Accumulated OCI into Income (Effective Portion)

Income (Effective Portion)

March 31,

March 31,

Hedging Relationships

2015

2014

2015

2014

Interest Rate Swaps

$

(5,468

)

$

(1,784

)

Interest expense

$

1,372

$

1,272

The Company's agreements with swap derivative counterparties contain provisions whereby if the Company defaults on the underlying indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default of the swap derivative obligation. As of March 31, 2015, the Company has not posted any collateral related to the agreements.

Concentration_of_Risk

Concentration of Risk	3 Months Ended
	Mar. 31, 2015
Risks and Uncertainties [Abstract]
Concentration of Risk	Concentration of Risk
	The Company seeks to reduce its operating and leasing risks through the geographic diversification of its properties, tenant industry diversification, avoidance of dependency on a single asset and the creditworthiness of its tenants. For the three months ended March 31, 2015 and 2014, no single tenant represented greater than 10% of rental revenues.
	Cash and cash equivalent balances at certain institutions may exceed insurable amounts. The Company believes it mitigates this risk by investing in or through major financial institutions.

Equity

Equity	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Equity	Equity
	Shareholders' Equity. During the three months ended March 31, 2015 and 2014, the Company issued 627,247 and 564,501 common shares, respectively, under its direct share purchase plan, which includes its dividend reinvestment plan, raising net proceeds of $6,685 and $5,416, respectively.
	During the three months ended March 31, 2015, the Company granted to certain executive officers performance-based shares, which vest based on the Company’s total shareholder return growth after a three-year measurement period relative to an index (321,018 shares) and its peers (321,011 shares). Dividends will not be paid on these grants until earned. Once the performance criteria are met and the actual number of shares earned is determined, the shares vest immediately. The fair value of the grants was determined at the grant date using a multifactor Monte Carlo simulation model for a fair value price of $6.66 per share for 321,011 shares and $6.86 per share for 321,018 shares. In addition, during the three months ended March 31, 2015, the Company granted 170,650 common shares to certain employees with a grant date fair value of $1,916. The common shares vest ratably over a three-year service period. Compensation expense is recognized over the requisite service period for all grants. During each of the three months ended March 31, 2015 and 2014, the Company issued 14,000 fully vested common shares to the non-management members of the Company's Board of Trustees with a grant date fair value of $157 and $142, respectively.
	Accumulated other comprehensive income (loss) as of March 31, 2015 and December 31, 2014 represented $(3,692) and $404, respectively, of unrealized gain (loss) on interest rate swaps, net.
	Changes in Accumulated Other Comprehensive Income (Loss)
			Gains and Losses
			on Cash Flow Hedges
	Balance December 31, 2014		$	404
	Other comprehensive loss before reclassifications		(5,468		)
	Amounts of loss reclassified from accumulated other comprehensive income to interest expense		1,372
	Balance March 31, 2015		$	(3,692	)
	Noncontrolling Interests. In conjunction with several of the Company's acquisitions in prior years, sellers were issued OP units as a form of consideration. All OP units, other than OP units owned by the Company, are redeemable for common shares at certain times, at the option of the holders, and are generally not otherwise mandatorily redeemable by the Company. The OP units are classified as a component of permanent equity as the Company has determined that the OP units are not redeemable securities as defined by GAAP. Each OP unit is currently redeemable at the holder's option for approximately 1.13 common shares, subject to future adjustments.
	During the three months ended March 31, 2014, in connection with the merger of LCIF II with and into LCIF, former LCIF II partners representing 170,193 OP units elected or were deemed to elect to receive $1,962 in aggregate cash for such OP units. In addition, during the three months ended March 31, 2014, 2,605 common shares were issued by the Company, in connection with OP unit redemptions, for an aggregate value of $13.
	As of March 31, 2015, there were approximately 3,422,000 OP units outstanding other than OP units owned by the Company. All OP units receive distributions in accordance with their respective partnership agreements. To the extent that the Company's dividend per common share is less than the stated distribution per OP unit per the applicable partnership agreement, the distributions per OP unit are reduced by the percentage reduction in the Company's dividend per common share. No OP units have a liquidation preference.
	The following discloses the effects of changes in the Company's ownership interests in its noncontrolling interests:
		Net Income (Loss) Attributable to Shareholders and Transfers from Noncontrolling Interests
		Three Months ended March 31,
		2015				2014
	Net income attributable to Lexington Realty Trust shareholders	$	33,505			$	886
	Transfers from noncontrolling interests:
	Decrease in additional paid-in-capital for redemption of noncontrolling OP units	—				(993		)
	Change from net income (loss) attributable to shareholders and transfers from noncontrolling interests	$	33,505			$	(107	)

Related_Party_Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions
	There were no related party transactions other than those disclosed elsewhere in this Quarterly Report and the audited consolidated financial statements in the Annual Report.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	In addition to the commitments and contingencies disclosed elsewhere and previously disclosed, the Company has the following commitments and contingencies.
	The Company is obligated under certain tenant leases, including its proportionate share for leases for non-consolidated entities, to fund the expansion of the underlying leased properties. During 2014, the Company commenced the expansion of the Byhalia, Mississippi property for an estimated cost of $15,300. The Company, under certain circumstances, may guarantee to tenants the completion of base building improvements and the payment of tenant improvement allowances and lease commissions on behalf of its subsidiaries. As of March 31, 2015, the Company had two outstanding guarantees for (1) the completion of the base building improvements and the payment of a related tenant improvement allowance for an office property in Orlando, Florida, for which the unfunded amounts were estimated to be $1,384 and (2) the full payment of the base building improvement, tenant improvement allowance and lease commissions for an office property in Herndon, Virginia, for which the unfunded amounts were estimated to be $138.
	From time to time, the Company is directly and indirectly involved in legal proceedings arising in the ordinary course of business. Management believes, based on currently available information, and after consultation with legal counsel, that although the outcomes of those normal course proceedings are uncertain, the results of such proceedings, in the aggregate, will not have a material adverse effect on the Company's business, financial condition and results of operations.

Supplemental_Disclosure_of_Sta

Supplemental Disclosure of Statement of Cash Flow Information	3 Months Ended
	Mar. 31, 2015
Supplemental Cash Flow Information [Abstract]
Supplemental Disclosure of Statement of Cash Flow Information	Supplemental Disclosure of Statement of Cash Flow Information
	In addition to disclosures discussed elsewhere, during the three months ended March 31, 2015 and 2014, the Company paid $18,671 and $23,198, respectively, for interest and $338 and $509, respectively, for income taxes.

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events
	Subsequent to March 31, 2015 and in addition to disclosures elsewhere in the unaudited condensed consolidated financial statements, the Company:
	•	disposed of its interest in an office property in Fort Myers, Florida for a gross sales price of $12,400;
	•	converted $2,828 aggregate original principal amount of 6.00% Convertible Guaranteed Notes due 2030 for approximately 428,707 common shares; and
	•	foreclosed on the borrower of the loan receivable secured by an office property in Southfield, Michigan.

The_Company_and_Financial_Stat1

The Company and Financial Statement Presentation (Policies)	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of presentation and consolidation	Basis of Presentation and Consolidation. The Company's unaudited condensed consolidated financial statements are prepared on the accrual basis of accounting in accordance with U.S. generally accepted accounting principles (“GAAP”). The financial statements reflect the accounts of the Company and its consolidated subsidiaries. The Company consolidates its wholly-owned subsidiaries and its partnerships and joint ventures which it controls (1) through voting rights or similar rights or (2) by means other than voting rights if the Company is the primary beneficiary of a variable interest entity ("VIE"). Entities which the Company does not control and entities which are VIEs in which the Company is not the primary beneficiary are accounted for under appropriate GAAP.
	The financial statements contained in this Quarterly Report on Form 10-Q for the three months ended March 31, 2015 (this “Quarterly Report”) have been prepared by the Company in accordance with GAAP for interim financial information and the applicable rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all information and footnotes required by GAAP for complete financial statements. However, in the opinion of management, the interim financial statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the results of the periods presented. The results of operations for the three months ended March 31, 2015 and 2014, are not necessarily indicative of the results that may be expected for the full year. These unaudited condensed consolidated financial statements should be read in conjunction with the Company's audited consolidated financial statements and notes thereto included in the Company's Form 10-K for the year ended December 31, 2014 filed with the SEC on February 26, 2015 (“Annual Report”).
Use of estimates	Use of Estimates. Management has made a number of significant estimates and assumptions relating to the reporting of assets and liabilities, the disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses to prepare these unaudited condensed consolidated financial statements in conformity with GAAP. These estimates and assumptions are based on management's best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. The current economic environment has increased the degree of uncertainty inherent in these estimates and assumptions. Management adjusts such estimates when facts and circumstances dictate. The most significant estimates made include the recoverability of accounts receivable, the allocation of property purchase price to tangible and intangible assets acquired and liabilities assumed, the determination of VIEs and which entities should be consolidated, the determination of impairment of long-lived assets, loans receivable and equity method investments, the valuation of derivative financial instruments and the useful lives of long-lived assets. Actual results could differ materially from those estimates.
Fair value measurements	Fair Value Measurements. The Company follows the guidance in the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification Topic 820, Fair Value Measurements and Disclosures, as amended (“Topic 820”), to determine the fair value of financial and non-financial instruments. Topic 820 defines fair value, establishes a framework for measuring fair value in GAAP and expands disclosures about fair value measurements. Topic 820 establishes a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three levels: Level 1 - quoted prices (unadjusted) in active markets that are accessible at the measurement date for assets or liabilities; Level 2 - observable prices that are based on inputs not quoted in active markets, but corroborated by market data; and Level 3 - unobservable inputs, which are used when little or no market data is available. The fair value hierarchy gives the highest priority to Level 1 inputs and the lowest priority to Level 3 inputs. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible, as well as considering counterparty credit risk. The Company has formally elected to apply the portfolio exception within Topic 820 with respect to measuring counterparty risk for all of its derivative transactions subject to master netting arrangements.
Acquisition, development and construction arrangements	Acquisition, Development and Construction Arrangements. The Company evaluates loans receivable where the Company participates in residual profits through loan provisions or other contracts to ascertain whether the Company has the same risks and rewards as an owner or a joint venture partner. Where the Company concludes that such arrangements are more appropriately treated as an investment in real estate, the Company reflects such loan receivable as an equity investment in real estate under construction in the unaudited condensed consolidated balance sheets. In these cases, no interest income is recorded on the loan receivable and the Company capitalizes interest during the construction period. In arrangements where the Company engages a developer to construct a property or provides funds to a tenant to develop a property, the Company will capitalize the funds provided to the developer/tenant and internal costs of interest and real estate taxes, if applicable, during the construction period.
Reclassifications	Reclassifications. Certain amounts included in the 2014 unaudited condensed consolidated financial statements have been reclassified, primarily relating to discontinued operations, to conform to the 2015 presentation.
Recently issued accounting guidance	Recently Issued Accounting Guidance. In April 2014, the FASB issued Accounting Standards Update No. 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity, which changes the criteria for reporting discontinued operations and improves financial statement disclosures. Under this guidance, only disposals representing a strategic shift in operations that have a major effect on an organization's operations and financial results should be presented as discontinued operations. The Company adopted this guidance effective January 1, 2015. The guidance requires the Company to continue to classify any property disposal or property classified as held for sale as of December 31, 2014 as discontinued operations prospectively. Therefore, the revenues and expenses related to these properties are presented as discontinued operations as of March 31, 2015. The Company did not classify any additional properties as discontinued operations subsequent to December 31, 2014 as the dispositions did not represent a strategic shift in operations. The implementation of this guidance did not have a material impact on the Company's financial position, results of operations or cash flows.
	In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606), which amends the guidance for revenue recognition to eliminate the industry-specific revenue recognition guidance and replace it with a principle based approach for determining revenue recognition. The new guidance is effective for reporting periods beginning after December 15, 2016. The Company is currently evaluating the impact of the adoption of the new guidance on its unaudited condensed consolidated financial statements.
	In February 2015, the FASB issued Accounting Standards Update 2015-02, Consolidation (Topic 810) - Amendments to the Consolidation Analysis, which provides guidance on the consolidation evaluation for reporting organizations that are required to evaluate whether they should consolidate certain legal entities. In accordance with the guidance, all legal entities are subject to reevaluation under the revised consolidation model. The guidance is effective in the first quarter of 2016 and early adoption is allowed. The Company is currently evaluating the impact of the adoption of this new guidance on its unaudited condensed consolidated financial statements.
	In April 2015, the FASB issued Accounting Standards Update 2015-03, Simplifying the Presentation of Debt Issuance Costs, which requires that debt issuance costs be presented on the balance sheet as a direct deduction from the carrying amount of the related debt liability. The guidance is effective in the first quarter of 2016 and requires retrospective application. The Company is currently evaluating the impact of the adoption of this new guidance on its unaudited condensed consolidated financial statements.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share Reconciliation	The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share computations for the three months ended March 31, 2015 and 2014:
		Three months ended March 31,
		2015		2014
	BASIC
	Income (loss) from continuing operations attributable to common shareholders	$	30,142	$	(980	)
	Income from discontinued operations attributable to common shareholders	1,687		141
	Net income (loss) attributable to common shareholders	$	31,829	$	(839	)
	Weighted-average number of common shares outstanding	232,525,675		227,156,690
	Income (loss) per common share:
	Income (loss) from continuing operations	$	0.13	$	—
	Income from discontinued operations	0.01		—
	Net income (loss) attributable to common shareholders	$	0.14	$	—
	DILUTED
	Income (loss) from continuing operations attributable to common shareholders - basic	$	30,142	$	(980	)
	Impact of assumed conversions:
	Share options	—		—
	Income (loss) from continuing operations attributable to common shareholders	30,142		(980		)
	Income from discontinued operations attributable to common shareholders - basic	1,687		141
	Impact of assumed conversions:
	Share options	—		—
	Income from discontinued operations attributable to common shareholders	1,687		141
	Net income (loss) attributable to common shareholders	$	31,829	$	(839	)
	Weighted-average common shares outstanding - basic	232,525,675		227,156,690
	Effect of dilutive securities:
	Share options	431,590		—
	Weighted-average common shares outstanding	232,957,265		227,156,690
	Income (loss) per common share:
	Income (loss) from continuing operations	$	0.13	$	—
	Income from discontinued operations	0.01		—
	Net income (loss) attributable to common shareholders	$	0.14	$	—

Investments_in_Real_Estate_and1

Investments in Real Estate and Real Estate Under Construction Investments in Real Estate and Real Estate Under Construction (Tables)	3 Months Ended
	Mar. 31, 2015
Real Estate [Abstract]
Schedule of acquired properties	The Company, through property owner subsidiaries, completed the following acquisitions, each of which is subject to a lease having a term in excess of ten years (an “LTL”), during the three months ended March 31, 2015:
	Property Type	Location	Acquisition/Completion Date	Initial Cost Basis			Lease Expiration	Land and Land Estate			Building and Improvements		Lease in-place Value Intangible
	LTL - Office	Auburn Hills, MI	Mar-15	$	40,025		Mar-29	$	4,416		$	30,012	$	5,597
	LTL - Industrial	Houston, TX	Mar-15	$	28,650		Mar-35	$	4,674		$	19,540	$	4,436
	LTL - Industrial	Brookshire, TX	Mar-15	$	22,450		Mar-35	$	2,388		$	16,614	$	3,448
	LTL - Industrial	Canton, MS	Mar-15	$	89,300		Feb-27	$	5,077		$	71,289	$	12,934
	LTL - Land/Infrastructure	Venice, FL	Jan-15	$	16,850		Jan-55	$	4,696		$	11,753	$	401
				$	197,275			$	21,251		$	149,208	$	26,816
Schedule of acquisition development and construction arrangements outstanding	As of March 31, 2015, the Company had the following development arrangements outstanding:
	Location	Property Type	Square Feet			Expected Maximum Commitment/Contribution				Lease Term (Years)	Estimated Completion Date
	Oak Creek, WI	LTL - Industrial	164,000			$	22,609			20	2Q 15
	Thomson, GA	LTL - Industrial	208,000			$	10,245			15	2Q 15
	Richmond, VA	LTL - Office	330,000			$	110,137			15	3Q 15
	Lake Jackson, TX	LTL - Office	664,000			$	166,164			20	4Q 16
			1,366,000			$	309,155
Schedule of properties to be acquired	In addition, the Company has committed to acquire the following properties:
	Location	Property Type	Estimated Acquisition Cost				Estimated Acquisition Date		Lease Term (Years)
	Richland, WA	LTL - Industrial	$	155,000			4Q 15		20
	Detroit, MI	LTL - Industrial	$	29,680			1Q 16		20
			$	184,680

Property_Dispositions_Disconti1

Property Dispositions, Discontinued Operations and Real Estate Impairment (Tables)	3 Months Ended
	Mar. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Operating Results for Properties Sold	The following presents the operating results for the properties sold for the applicable periods:
		Three months ended March 31,
		2015		2014
	Total gross revenues	$	163	$	9,275
	Pre-tax income, including gains on sales	$	12,282	$	178

Loans_Receivable_Tables

Loans Receivable (Tables)	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Summary of Loans Receivable	The following is a summary of our loans receivable as of March 31, 2015 and December 31, 2014:
		Loan carrying-value(1)
	Loan		3/31/15		12/31/14		Interest Rate		Maturity Date
	Westmont, IL(2)		$	12,221	$	12,152	6.45	%	Oct-15
	Southfield, MI(3)		3,310		3,296		4.55	%	Feb-15
	Austin, TX		2,914		2,800		16	%	Oct-18
	Kennewick, WA		85,314		85,254		9	%	May-22
	Other		2,068		2,133		8	%	2021-2022
			$	105,827	$	105,635
	-1	Loan carrying value includes accrued interest and is net of origination costs and loan losses, if any.
	-2	Borrowers are in default and the Company commenced foreclosure proceedings. The tenant at the office property constituting the collateral terminated its lease. The Company recognized an impairment of $13,939 during 2013. During the three months ended March 31, 2015 and 2014, the Company recognized $0 and $425 of interest income relating to the impaired loan, respectively, and the loan had an average recorded investment value of $12,510 and $12,561, respectively. At March 31, 2015, the impaired loan receivable had a contractual unpaid balance of $29,455.
	-3	The Company recorded a $2,500 loan loss in the fourth quarter of 2014 as the Company determined it was probable that it would not collect the amount owed at maturity. During the three months ended March 31, 2015, the Company recognized $14 of interest income relating to the impaired loan and the loan had an average recorded investment of $3,303. At March 31, 2015, the impaired loan receivable had a contractual unpaid balance of $6,083. See note 15.

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Schedule of Fair Value Measurement Inputs	The following tables present the Company's assets and liabilities from continuing operations measured at fair value on a recurring and non-recurring basis as of March 31, 2015 and December 31, 2014, aggregated by the level in the fair value hierarchy within which those measurements fall:
		Balance			Fair Value Measurements Using
	Description	March 31, 2015			(Level 1)		(Level 2)			(Level 3)
	Impaired real estate assets*	$	475		$	—	$	—		$	475
	Interest rate swap liabilities	$	(3,692	)	$	—	$	(3,692	)	$	—
		Balance			Fair Value Measurements Using
	Description	December 31, 2014			(Level 1)		(Level 2)			(Level 3)
	Interest rate swap assets	$	1,153		$	—	$	1,153		$	—
	Impaired real estate assets*	$	25,679		$	—	$	—		$	25,679
	Impaired loan receivable*	$	3,296		$	—	$	—		$	3,296
	Interest rate swap liabilities	$	(749	)	$	—	$	(749	)	$	—
	*Represents a non-recurring fair value measurement.
Schedule of Carrying Amounts and Fair Value of Financial Instruments	The table below sets forth the carrying amounts and estimated fair values of the Company's financial instruments as of March 31, 2015 and December 31, 2014.
		As of March 31, 2015					As of December 31, 2014
		Carrying			Fair Value		Carrying			Fair Value
		Amount					Amount
	Assets
	Loans Receivable (Level 3)	$	105,827		$	104,599	$	105,635		$	105,061
	Liabilities
	Debt (Level 3)	$	2,141,343		$	2,148,262	$	2,092,675		$	2,091,364

Debt_Tables

Debt (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt Instrument Redemption	The Company had the following senior notes outstanding as of March 31, 2015:
	Issue Date		Face Amount			Interest Rate		Maturity Date	Issue Price
	May-14		$	250,000		4.4	%	Jun-24	99.883	%
	Jun-13		250,000			4.25	%	Jun-23	99.026	%
			$	500,000
Schedule of Long-term Debt Instruments	Below is a summary of additional disclosures related to the 6.00% Convertible Guaranteed Notes due 2030.
		6.00% Convertible Guaranteed Notes due 2030
	Balance Sheets:	March 31, 2015			December 31, 2014
	Principal amount of debt component	$	15,628		$	16,228
	Unamortized discount	(476		)	(564		)
	Carrying amount of debt component	$	15,152		$	15,664
	Carrying amount of equity component	$	(33,536	)	$	(33,160	)
	Effective interest rate	8.1		%	8.1		%
	Period through which discount is being amortized, put date	Jan-17			Jan-17
	Aggregate if-converted value in excess of aggregate principal amount	$	7,661		$	10,432
		Three months ended March 31,
	Statements of Operations:	2015			2014
	6.00% Convertible Guaranteed Notes
	Coupon interest	$	236		$	428
	Discount amortization	67			121
		$	303		$	549

Derivatives_and_Hedging_Activi1

Derivatives and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Outstanding Interest Rate Derivatives Designated as Cash Flow Hedges

As of March 31, 2015, the Company had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk:

Interest Rate Derivative

Number of Instruments

Notional

Interest Rate Swaps

10

$505,000

Fair Value of the Company's Derivative Financial Instruments and Classification on the Balance Sheets

The table below presents the fair value of the Company's derivative financial instruments as well as their classification on the unaudited condensed consolidated balance sheets as of March 31, 2015 and December 31, 2014.

As of March 31, 2015

As of December 31, 2014

Balance Sheet Location

Fair Value

Balance Sheet Location

Fair Value

Derivatives designated as hedging instruments

Interest Rate Swap Asset

Other Assets

$

1,153

Interest Rate Swap Liability

Accounts Payable and Other Liabilities

$

(3,692

)

Accounts Payable and Other Liabilities

$

(749

)

Effect of the Company's Derivative Financial Instruments on the Statements of Operation

The tables below present the effect of the Company's derivative financial instruments on the unaudited condensed consolidated statements of operations for the three months ended March 31, 2015 and 2014.

Derivatives in Cash Flow

Amount of Gain (Loss) Recognized

Location of Loss

Amount of Loss Reclassified

in OCI on Derivatives

Reclassified from

from Accumulated OCI into

(Effective Portion)

Accumulated OCI into Income (Effective Portion)

Income (Effective Portion)

March 31,

March 31,

Hedging Relationships

2015

2014

2015

2014

Interest Rate Swaps

$

(5,468

)

$

(1,784

)

Interest expense

$

1,372

$

1,272

Equity_Tables

Equity (Tables)	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Changes in Accumulated Other Comprehensive Income (Loss)
			Gains and Losses
			on Cash Flow Hedges
	Balance December 31, 2014		$	404
	Other comprehensive loss before reclassifications		(5,468		)
	Amounts of loss reclassified from accumulated other comprehensive income to interest expense		1,372
	Balance March 31, 2015		$	(3,692	)
Effects of Changes in the Company's Ownership Interests in Noncontrolling Interests	The following discloses the effects of changes in the Company's ownership interests in its noncontrolling interests:
		Net Income (Loss) Attributable to Shareholders and Transfers from Noncontrolling Interests
		Three Months ended March 31,
		2015				2014
	Net income attributable to Lexington Realty Trust shareholders	$	33,505			$	886
	Transfers from noncontrolling interests:
	Decrease in additional paid-in-capital for redemption of noncontrolling OP units	—				(993		)
	Change from net income (loss) attributable to shareholders and transfers from noncontrolling interests	$	33,505			$	(107	)

The_Company_and_Financial_Stat2

The Company and Financial Statement Presentation (Details)	Mar. 31, 2015
	state
	Property
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of properties	215
Number of states in which entity has interests	40

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
BASIC
Income (loss) from continuing operations attributable to common shareholders - basic	$30,142	($980)
Income from discontinued operations attributable to common shareholders - basic	1,687	141
Net income (loss) attributable to common shareholders	31,829	-839
Weighted-average common shares outstanding - basic	232,525,675	227,156,690
Income (loss) from continuing operations	$0.13	$0
Income from discontinued operations	$0.01	$0
Net income (loss) attributable to common shareholders	$0.14	$0
DILUTED
Income (loss) from continuing operations attributable to common shareholders - basic	30,142	-980
Impact of assumed conversions:
Share options	0	0
Income (loss) from continuing operations attributable to common shareholders	30,142	-980
Income from discontinued operations attributable to common shareholders - basic	1,687	141
Share options	0	0
Income from discontinued operations attributable to common shareholders	1,687	141
Net income (loss) attributable to common shareholders	$31,829	($839)
Effect of dilutive securities:
Share options (in shares)	431,590	0
Weighted-average common shares outstanding (in shares)	232,957,265	227,156,690
Income (loss) per common share:
Income (loss) from continuing operations (USD per share)	$0.13	$0
Income from discontinued operations (USD per share)	$0.01	$0
Net income (loss) attributable to common shareholders (USD per share)	$0.14	$0

Investments_in_Real_Estate_and2

Investments in Real Estate and Real Estate Under Construction - Summary of acquisitions and build-to-suit transactions (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Investments in Real Estate and Real Estate Under Construction [Line Items]
Initial cost basis	$197,275
Land and land estate	21,251
Building and improvements	149,208
Lease in-place value	26,816
Office Building [Member] | Auburn Hills, Michigan [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Initial cost basis	40,025
Land and land estate	4,416
Building and improvements	30,012
Lease in-place value	5,597
Industrial property [Member] | Houston, TX [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Initial cost basis	28,650
Land and land estate	4,674
Building and improvements	19,540
Lease in-place value	4,436
Industrial property [Member] | Brookshire, TX [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Initial cost basis	22,450
Land and land estate	2,388
Building and improvements	16,614
Lease in-place value	3,448
Industrial property [Member] | Canton, Mississippi [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Initial cost basis	89,300
Land and land estate	5,077
Building and improvements	71,289
Lease in-place value	12,934
Land [Member] | Venice, Florida [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Initial cost basis	16,850
Land and land estate	4,696
Building and improvements	11,753
Lease in-place value	$401

Investments_in_Real_Estate_and3

Investments in Real Estate and Real Estate Under Construction - Summary of development arrangements outstanding (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
	sqft
Investments in Real Estate and Real Estate Under Construction [Line Items]
Square Feet	1,366,000
Expected Maximum Commitment/Contribution	$309,155
Oak Creek Wisconsin [Member] | Industrial property [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Square Feet	164,000
Expected Maximum Commitment/Contribution	22,609
Lease Term (Years)	20 years
Thomson, Georgia [Member] | Industrial property [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Square Feet	208,000
Expected Maximum Commitment/Contribution	10,245
Lease Term (Years)	15 years
Richmond, Virginia [Member] | Office Building [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Square Feet	330,000
Expected Maximum Commitment/Contribution	110,137
Lease Term (Years)	15 years
Lake Jackson, Texas [Member] | Office Building [Member]
Investments in Real Estate and Real Estate Under Construction [Line Items]
Square Feet	664,000
Expected Maximum Commitment/Contribution	$166,164
Lease Term (Years)	20 years

Investments_in_Real_Estate_and4

Investments in Real Estate and Real Estate Under Construction - Summary of properties to be acquired (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Business Acquisition [Line Items]
Estimated acquisition cost	$184,680
Richland, Washington [Member] | Industrial property [Member]
Business Acquisition [Line Items]
Estimated acquisition cost	155,000
Lease term (years)	20 years
Detroit, Michigan [Member] | Industrial property [Member]
Business Acquisition [Line Items]
Estimated acquisition cost	$29,680
Lease term (years)	20 years

Investments_in_Real_Estate_and5

Investments in Real Estate and Real Estate Under Construction - Narrative (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Business Acquisition [Line Items]
Aggregate acquisition expenses	$468	$368
Development in process	125,571		106,238
Development Deals [Member]
Business Acquisition [Line Items]
Capitalized interest	$4,106		$2,828

Property_Dispositions_Disconti2

Property Dispositions, Discontinued Operations and Real Estate Impairment (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
	Property
Real Estate Properties [Line Items]
Debt satisfaction gains (charges), net	$10,375	($3,304)
Real estate properties held for sale	0
Discontinued operation asset impairment charges	0	2,309
Impairment of real estate	1,139	16,400
Impaired real estate investment property, at cost	475	5,574
Non-recourse debt	17,234
Total gross revenues	163	9,275
Pre-tax income, including gains on sales	12,282	178
Mortgages [Member]
Real Estate Properties [Line Items]
Debt extinguishment amount	30,293
Sold Properties [Member]
Real Estate Properties [Line Items]
Aggregate gross disposition price	4,950	350
Number of properties sold		1
Gain on sale of properties	1,725
Transferred Property [Member]
Real Estate Properties [Line Items]
Real estate number of properties transferred	2
Debt satisfaction gains (charges), net	$10,466

Loans_Receivable_Details

Loans Receivable (Details) (USD $)	3 Months Ended			12 Months Ended		3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014	Dec. 31, 2014		Dec. 31, 2013
	type_of_financing
	class_of_financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying amount of loans receivable, gross	$105,827	[1]		$105,635	[1]
Number of types of financing receivable	2
Number of classes of financing receivable	1
Westmont, Illinios [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying amount of loans receivable, gross	12,221	[1],[2]		12,152	[1],[2]
Interest rate of mortgage loans	6.45%	[2]		6.45%	[2]
Impaired financing receivable, interest income, cash basis method	0		425
Average recorded investment	12,510		12,561
Unpaid principal balance	29,455
Southfield, Michigan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying amount of loans receivable, gross	3,310	[1],[3]		3,296	[1],[3]
Interest rate of mortgage loans	4.55%	[3]		4.55%	[3]
Impaired financing receivable, interest income, cash basis method	14
Average recorded investment	3,303
Unpaid principal balance	6,083
Maximum contracted lending amount				2,500
Austin, Texas [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying amount of loans receivable, gross	2,914	[1]		2,800	[1]
Interest rate of mortgage loans	16.00%			16.00%
Kennewick, Washington [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying amount of loans receivable, gross	85,314	[1]		85,254	[1]
Interest rate of mortgage loans	9.00%			9.00%
Other Loan Locations [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Carrying amount of loans receivable, gross	2,068	[1]		2,133	[1]
Interest rate of mortgage loans	8.00%			8.00%
Loans Receivable [Member] | Westmont, Illinios [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivable impairment charge						$13,939
[1]	Loan carrying value includes accrued interest and is net of origination costs and loan losses, if any.
[2]	Borrowers are in default and the Company commenced foreclosure proceedings. The tenant at the office property constituting the collateral terminated its lease. The Company recognized an impairment of $13,939 during 2013. During the three months ended MarchB 31, 2015 and 2014, the Company recognized $0 and $425 of interest income relating to the impaired loan, respectively, and the loan had an average recorded investment value of $12,510 and $12,561, respectively. At MarchB 31, 2015, the impaired loan receivable had a contractual unpaid balance of $29,455.
[3]	The Company recorded a $2,500 loan loss in the fourth quarter of 2014 as the Company determined it was probable that it would not collect the amount owed at maturity. During the three months ended MarchB 31, 2015, the Company recognized $14 of interest income relating to the impaired loan and the loan had an average recorded investment of $3,303. At MarchB 31, 2015, the impaired loan receivable had a contractual unpaid balance of $6,083.

Fair_Value_Measurements_Schedu

Fair Value Measurements - Schedule Fair Value Measurements Inputs (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired real estate assets	$475	[1]	$25,679	[1]
Impaired Loan Receivable Fair Value Disclosure			3,296	[1]
Fair Value, Measurements, Nonrecurring [Member] | Fair Value Measurements Using Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired real estate assets	0	[1]	0	[1]
Impaired Loan Receivable Fair Value Disclosure			0	[1]
Fair Value, Measurements, Nonrecurring [Member] | Fair Value Measurements Using Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired real estate assets	0	[1]	0	[1]
Impaired Loan Receivable Fair Value Disclosure			0	[1]
Fair Value, Measurements, Nonrecurring [Member] | Fair Value Measurements Using Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired real estate assets	475	[1]	25,679	[1]
Impaired Loan Receivable Fair Value Disclosure			3,296	[1]
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap assets			1,153
Interest rate swap liabilities	-3,692		-749
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements Using Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap assets			0
Interest rate swap liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements Using Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap assets			1,153
Interest rate swap liabilities	-3,692		-749
Fair Value, Measurements, Recurring [Member] | Fair Value Measurements Using Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap assets			0
Interest rate swap liabilities	$0		$0
[1]	Represents a non-recurring fair value measurement.

Fair_Value_Measurements_Fair_V

Fair Value Measurements - Fair Value by Balance Sheet Grouping (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Assets
Carrying value of loans receivable	$105,827	$105,635
Carrying Amount [Member] | Fair Value Measurements Using Level 3 [Member]
Assets
Carrying value of loans receivable	105,827	105,635
Liabilities
Carrying value of debt	2,141,343	2,092,675
Fair Value [Member] | Fair Value Measurements Using Level 3 [Member]
Assets
Fair value of loans receivable	104,599	105,061
Liabilities
Fair value of debt	$2,148,262	$2,091,364

Investment_in_and_Advances_to_1

Investment in and Advances to Non-Consolidated Entities (Details) (USD $)	3 Months Ended		1 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Nov. 30, 2014	Aug. 31, 2013
Investments in and Advances to Affiliates [Line Items]
Advances to affiliate	$61,735
Investment in joint venture	3,032	0
Houston, TX [Member]
Investments in and Advances to Affiliates [Line Items]
Anticipated construction cost			86,491
Maximum construction financing	56,686
Joint Venture [Member] | Houston, TX [Member]
Investments in and Advances to Affiliates [Line Items]
Ownership percentage of equity method investment	25.00%
Lease term (years)			20 years
Joint Venture [Member] | Baltimore, Maryland [Member]
Investments in and Advances to Affiliates [Line Items]
Lease term (years)				99 years
Investment in joint venture				5,000
Lexington Realty Trust [Member]
Investments in and Advances to Affiliates [Line Items]
Advances to affiliate	$14,152
Minimum [Member]
Investments in and Advances to Affiliates [Line Items]
Ownership percentage of equity method investment	15.00%
Maximum [Member]
Investments in and Advances to Affiliates [Line Items]
Ownership percentage of equity method investment	40.00%
Mortgages [Member]
Investments in and Advances to Affiliates [Line Items]
Stated interest rate	3.70%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	5.20%

Debt_Additional_Information_De

Debt - Additional Information (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2014	31-May-14	Jun. 30, 2013
Debt Instrument [Line Items]
Mortgages and notes payable	$901,328,000				$945,216,000
Weighted average interest rate	5.00%				5.20%
Credit facility borrowings	93,000,000				0
Percent of notes required to be repurchased at the option of the holders			100.00%
Converted debt, shares issued	90,957	414,637
Convertible debt cash payments		62,000
Debt satisfaction charges	-10,375,000	3,304,000
Interest Rate Contract [Member]
Debt Instrument [Line Items]
Gross amount of long-term debt	250,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	500,000,000
Line of Credit [Member]
Debt Instrument [Line Items]
Amount of letters of credit outstanding	12,144,000
Remaining borrowing capacity on line of credit facility	294,856,000
Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	255,000,000
6% Convertible Guaranteed Note [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	15,628,000		115,000,000		16,228,000
Stated interest rate	6.00%				6.00%
Maturity date			31-Jan-30
Conversion ratio numerator	151.5965
Conversion price (dollars per share)	$6.60
Debt satisfaction charges	77,000	574,000
Other Debt Obligations [Member]
Debt Instrument [Line Items]
Debt satisfaction charges	14,000	2,730,000
Senior Notes Due 2024 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Face amount of debt instrument						250,000,000
Stated interest rate						4.40%
Percentage of issuance price						99.88%
Senior Notes Due 2023 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Face amount of debt instrument							250,000,000
Stated interest rate							4.25%
Percentage of issuance price							99.03%
Unsecured Revolving Credit Facility, Expiring February 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable at the End of the Period	1.15%
Unsecured Revolving Credit Facility, Expiring February 2018 [Member] | Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Face amount of debt instrument	400,000,000
Credit facility borrowings	93,000,000
Term Loan Facility from Key Bank [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable at the End of the Period	1.35%
Term Loan Facility from Key Bank [Member] | Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Face amount of debt instrument				250,000,000
Term of debt instrument				5 years
Term Loan Facility from Key Bank [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Weighted average interest rate	1.09%
Unsecured Term Loan, Expiring January 2019 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable at the End of the Period	1.75%
Unsecured Term Loan, Expiring January 2019 [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Weighted average interest rate	1.42%
Convertible Debt [Member]
Debt Instrument [Line Items]
Amount of debt converted	$600,000	$2,805,000
Minimum [Member]
Debt Instrument [Line Items]
Stated interest rate	2.20%				2.20%
Minimum [Member] | Unsecured Revolving Credit Facility, Expiring February 2018 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.95%
Minimum [Member] | Term Loan Facility from Key Bank [Member]
Debt Instrument [Line Items]
Basis spread on variable rate				1.10%
Minimum [Member] | Unsecured Term Loan, Expiring January 2019 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Maximum [Member]
Debt Instrument [Line Items]
Stated interest rate	8.50%				8.50%
Maximum [Member] | Unsecured Revolving Credit Facility, Expiring February 2018 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.73%
Maximum [Member] | Term Loan Facility from Key Bank [Member]
Debt Instrument [Line Items]
Basis spread on variable rate				2.10%
Maximum [Member] | Unsecured Term Loan, Expiring January 2019 [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.25%

Debt_Additional_disclosures_re

Debt - Additional disclosures related to the 6.00% Convertible Guaranteed Notes due 2030 (Details) (6% Convertible Guaranteed Note [Member], USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2010
6% Convertible Guaranteed Note [Member]
Debt Instrument [Line Items]
Principal amount of debt component	$15,628,000		$16,228,000	$115,000,000
Unamortized discount	-476,000		-564,000
Carrying amount of debt component	15,152,000		15,664,000
Carrying amount of equity component	-33,536,000		-33,160,000
Effective interest rate	8.10%		8.10%
Aggregate if-converted value in excess of aggregate principal amount	7,661,000		10,432,000
Coupon interest	236,000	428,000
Discount amortization	67,000	121,000
Interest expense	$303,000	$549,000

Derivatives_and_Hedging_Activi2

Derivatives and Hedging Activities (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Derivative [Line Items]
Expected amount of derivative related interest to be reclassified to interest expense over the next 12 months	$4,665,000
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Other Assets [Member]
Derivative [Line Items]
Derivative asset			1,153,000
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Accounts Payable And Other Liabilities [Member]
Derivative [Line Items]
Derivative liability	-3,692,000		-749,000
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount	505,000,000
Number of derivative instruments held	10
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Interest Expense [Member]
Derivative [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	-5,468,000	-1,784,000
Amount of loss reclassified from accumulated OCI into income (effective portion)	$1,372,000	$1,272,000

Concentration_of_Risk_Details

Concentration of Risk (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
	tenant	tenant
Concentration Risk [Line Items]
Number of tenants representing more than 10% of rental revenue	0	0
Maximum [Member] | Tenant Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	10.00%

Equity_Additional_Information_

Equity - Additional Information (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Equity [Line Items]
Proceeds from issuance of common shares	$6,582	$4,433
Gains and Losses on Cash Flow Hedges, Beginning	404
OP unit equivalent in common shares	1.13
Redemption of noncontrolling OP units		-1,962
Partners capital account, shares issued for units redeemed		2,605
Partners' capital account, units	3,422,000
Parent [Member]
Equity [Line Items]
Partners' capital account, redemption for common shares		13
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Equity [Line Items]
Gains and Losses on Cash Flow Hedges, Beginning			404
Former LCIF II Partners [Member]
Equity [Line Items]
Partners capital account, units exchanged for cash	170,193
Redemption of noncontrolling OP units	1,962
Trustees [Member]
Equity [Line Items]
Deferred compensation arrangement with individual, shares issued	14,000	14,000
Deferred compensation arrangement with individual, fair value of shares issued	157	142
Direct Share Purchase Plan [Member]
Equity [Line Items]
Common shares issued during period	627,247	564,501
Proceeds from issuance of common shares	6,685	5,416
Performance Shares [Member]
Equity [Line Items]
Grants in period	170,650
Weighted average grant date fair value	$1,916
Award vesting period	3 years
Performance Shares [Member] | Executive Officer [Member]
Equity [Line Items]
Measurement period	3 years
Index Performance Shares [Member] | Executive Officer [Member]
Equity [Line Items]
Measurement period basis	321,018
Fair value per share	$6.86
Peer Performance Shares [Member] | Executive Officer [Member]
Equity [Line Items]
Measurement period basis	321,011
Fair value per share	$6.66

Equity_Changes_in_Other_Compre

Equity - Changes in Other Comprehensive Income (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Gains and Losses on Cash Flow Hedges, Beginning		$404
Gains and Losses on Cash Flow Hedges, Ending	-3,692	404
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Gains and Losses on Cash Flow Hedges, Beginning	404
Other comprehensive loss before reclassifications	-5,468
Amounts of loss reclassified from accumulated other comprehensive income to interest expense	1,372
Gains and Losses on Cash Flow Hedges, Ending	($3,692)

Equity_Changes_in_Companys_Own

Equity - Changes in Company's Ownership Interests (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Equity [Line Items]
Net income attributable to Lexington Realty Trust shareholders	$33,505	$886
Decrease in additional paid-in-capital for redemption of noncontrolling OP units	0	-993
Change from net income (loss) attributable to shareholders and transfers from noncontrolling interests	33,505	-107
Accumulated Distributions in Excess of Net Income [Member]
Equity [Line Items]
Net income attributable to Lexington Realty Trust shareholders	$33,505	$886

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	Guarantee
Commitments and Contingencies [Line Items]
Payments for capital improvements	$1,717	$3,051
Number of guarantees outstanding	2
Base Building Improvements [Member]
Commitments and Contingencies [Line Items]
Obligation for tenant improvements	1,384
Payment of the Base Building Improvement, Tenant Improvement Alloance, and Lease Commissions [Member]
Commitments and Contingencies [Line Items]
Obligation for tenant improvements	138
Byhalia Mississippi [Member]
Commitments and Contingencies [Line Items]
Payments for capital improvements			$15,300

Supplemental_Disclosure_of_Sta1

Supplemental Disclosure of Statement of Cash Flow Information (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Supplemental Cash Flow Information [Abstract]
Interest paid	$18,671	$23,198
Income taxes paid	$338	$509

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	3 Months Ended		1 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	7-May-15
Subsequent Event [Line Items]
Converted debt, shares issued	90,957	414,637
Subsequent Event [Member] | Fort Meyers, Florida [Member]
Subsequent Event [Line Items]
Proceeds from sale of property held-for-sale			$12,400
Convertible Debt [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Amount of debt converted			$2,828
Stated interest rate			6.00%
Converted debt, shares issued			428,707