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Annual Preferred Return on Invesment in Joint Venture

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Cash Cash Equivalents And Restricted Cash At Carrying Value

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Contingent Property Management Fee Receivable From Related Party Percentage Of Gross Revenue

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Internal Rate of Return on Joint Venture Investment

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Joint Investment Ownership Percentage By Partner

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Loans Receivable Rate Of Interest

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Management Fee Receivable From Related Party Percentage Of Equity Capital

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Real Estate Including Intangibles Net

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Recorded Earnings Related to Equity Method Investment Difference Between Carrying Amount And Underlying Equity

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Residual Cashflow Allocation If Entity Is General Partner Percentage

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Residual Cashflow Allocation If Entity Is General Partner Percentage By Partner

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Residual Cashflow Allocation If Entity Is Not General Partner Percentage

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Residual Cashflow Allocation If Entity Is Not General Partner Percentage By Partner

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- Definition

Return On Investment Percent

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Return On Investment Percent By Partner

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Return On Investment Value

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Return on Investment Value By Partner

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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The item represents the difference, if any, between the amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and the amount of underlying equity in net assets the reporting Entity has in the investee. A difference can arise between the carrying value of the equity method investment and the value of the Entity's amount of underlying equity in net assets of the investee, for example, from appreciation of certain assets which is not recognized in earnings, but is recognized in other comprehensive income (a separate component of shareholders' equity) by the investee.

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This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity.

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The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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The cost of borrowed funds accounted for as interest that was charged against earnings during the period.

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

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For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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State separately the amounts represented by preferred stock if the preferred stock is material in relation to the consolidated stockholders' equity.

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The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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This element represents a sum total of expenses not separately reflected on the income statement for the period.

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The amount of ownership interest of different classes of partners in limited partnership.

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The cash outflow from the acquisition of property as primarily intended to generate income for its owner.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The aggregate revenue from real estate operations during the reporting period.

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Investment in and Advances to Non-Consolidated Entities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended			3 Months Ended					1 Months Ended	3 Months Ended		3 Months Ended		6 Months Ended														6 Months Ended			3 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Jun. 30, 2011 Concord Debt Holdings LLC [Member]	Dec. 31, 2010 Concord Debt Holdings LLC [Member]	Dec. 31, 2006 Concord Debt Holdings LLC [Member]	Dec. 31, 2006 Concord Debt Holdings LLC [Member] WRT [Member]	Jun. 30, 2011 LW Sofi LLC [Member]	Apr. 30, 2011 Pemlex LLC [Member] sqft	Jun. 30, 2011 Pemlex LLC [Member]	Jun. 30, 2011 Maximum [Member] Lexington Reality Advisors Inc [Member] Net Lease Strategic Assets Fund L P [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member]	Jun. 30, 2010 Net Lease Strategic Assets Fund L P [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member]	Jun. 30, 2010 Net Lease Strategic Assets Fund L P [Member]	Dec. 31, 2010 Net Lease Strategic Assets Fund L P [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member] Common Stock [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member] Common Stock [Member] Inland American Real Estate Trust Inc [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member] Common Stock [Member] Inland American Real Estate Trust Inc [Member] Return On Of Investment Fifth Priority [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member] Common Stock [Member] Return On Of Investment First Priority [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member] Common Stock [Member] Return On Of Investment Third Priority [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member] Common Stock [Member] Return On Of Investment Sixth Priority [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member] Preferred Stock [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member] Preferred Stock [Member] Return On Of Investment Second Priority [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member] Preferred Stock [Member] Return On Of Investment Fourth Priority [Member]	Jun. 30, 2011 Net Lease Strategic Assets Fund L P [Member] Return On Of Investment Seventh Priority [Member]	Jun. 30, 2011 Lexington Reality Advisors Inc [Member] Net Lease Strategic Assets Fund L P [Member]	Jun. 30, 2011 Allen, Texas Property [Member] Nonrecourse Mezzanine Loan [Member] Net Lease Strategic Assets Fund L P [Member]	Jun. 30, 2011 Allen, Texas Property [Member] First Mortgage [Member] Net Lease Strategic Assets Fund L P [Member]	May 05, 2011 Nonrecourse Mezzanine Loan [Member] Net Lease Strategic Assets Fund L P [Member]	Jun. 30, 2011 Lex Win Concord [Member]	Mar. 31, 2011 Other Nonconsolidated Entity [Member]	May 31, 2011 Short-term Debt [Member] NLS Entity [Member]	Dec. 31, 2010 Short-term Debt [Member] NLS Entity [Member]
Investments in and Advances to Affiliates [Line Items]
Investment in joint venture			$ 19,940	$ 0							$ 14,180
Square feet of property acquired											210,000
Payment to acquire real estate											15,900
Internal rate of return on investment											15.00%
Annual preferred return on investment											9.60%
Income from equity method investment	7,600	5,368	11,599	10,606								681
Co-venture equity ownership percentage, by partner									50.00%											85.00%
Co-venture equity ownership percentage								50.00%											15.00%						100.00%
Return on investment percent, by partner																						9.00%
Return on investment, value by partner																					220,590	220,590
Return on investment percent																							9.00%			6.50%
Return on investment, value																							38,928	38,928		162,487	162,487
Remaining cashflow allocation if company is general partner, by partner																												65.00%
Remaining cashflow allocation if company is general partner																												35.00%
Residual Cashflow Allocation If Entity Is Not General Partner Percentage By Partner																												85.00%
Residual Cashflow Allocation If Entity Is Not General Partner Percentage																												15.00%
Management fee																													0.375%
Contingent property management fee													3.00%
Acquisition fee																													0.50%
Real estate, including intangibles, net														597,078		597,078		647,094
Cash, including restricted cash														8,299		8,299		11,207
Mortgages and notes payable	1,415,968		1,415,968		1,481,216									264,084		264,084		302,517
Noncontrolling preferred interest														188,479		188,479		183,896
Partners’ capital														158,193		158,193		169,275
Total gross revenues	82,675	80,565	165,338	162,088										15,871	15,364	32,297	30,901
Depreciation and amortization	41,880	38,839	81,127	78,574										(8,374)	(9,635)	(17,019)	(19,270)
Interest expense	26,953	30,280	53,967	60,507										(4,584)	(4,751)	(9,164)	(9,527)
Gain (Loss) on Sale of Properties			5,069	498										2,732	0	2,732	0
Other expenses, net														(2,570)	(1,028)	(4,097)	(1,827)
Net income (loss)	(56,957)	(29,701)	(72,950)	(59,027)										3,075	(50)	4,749	277
Equity recognized in income using hypothetical liquidation														10,016	9,551	10,016	9,551
Difference between assets contributed and fair value of initial investment														94,723		94,723
Recorded earnings related to the difference between the assets contributed and the fair value of initial equity investment														1,813	1,818	1,813	1,818
Loan receivable from equity investee																																6,875			13,202	7,614
Interest rate on short-term loan																																15.00%			7.40%	6.90%
Debt assumed																														6,875	30,582
Equity Method Investment distributions						621																											258
Equity method investment							0			5,760																								719
Loss on impairment																																		$ 1,559