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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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 21
-Paragraph 16, 20

+ Details

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- Definition

Interest rate stated in the contractual debt agreement.

+ References

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

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- Definition

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

+ Details

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- Definition

Total of loans held-for-sale and held-in-portfolio net of unearned income, allowance for loan and lease losses, if any, unamortized loan origination and other fees and costs, and purchased premiums or discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 7
-Subparagraph a
-Article 9

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- Definition

The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph c
-Subparagraph Schedule IV
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 29
-Article 12

+ Details

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- Definition

Total amount of new mortgage loans on real estate during the reporting period.

+ References

+ Details

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- Definition

Cash received from principal payments made on loans related to operating activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 27

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- Definition

Gain Loss on Repayment of Debt.

+ Details

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- Definition

Loans receivable.

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Loans Receivable (Details) (USD $)	1 Months Ended		6 Months Ended
Loans Receivable (Details) (USD $)	Apr. 30, 2011	Mar. 31, 2011	Jun. 30, 2011	May 31, 2011	Dec. 31, 2010
Loans Receivable (Textuals) [Abstract]
Net loans receivable			$ 634,472,000		$ 149,263,000
Principal amount of first mortgage debt			12,900,000
Final repayment of the loan	112,400,000	19,900,000
Recognized gain from the repayment	3,300,000	800,000
Aggregate principal amount of senior unsecured term loan				$ 600,000,000
Senior unsecured term loan [Member]
Debt Instrument [Line Items]
Percentage of notes due				5.00%
First Mortgage Loan Maturing In 2016 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Bearing interest for the first acquisition			9.00%