Aggregate amortized amount of all interest rate derivatives designated as hedging instruments in cash flow hedges. Amortized amount refers to the monetary amount or carrying amount reported in the financial statement at year at period end.

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- Definition

The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

+ Details

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- Definition

The reference rate for the variable rate of the interest rate derivative, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ Details

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- Definition

The date the derivative matures.

+ Details

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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

Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 107

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13433-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13495-108611

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- Definition

Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5579245-113959

+ Details

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Mortgage and Other Indebtedness (Details 4) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Derivatives, Fair Value [Line Items]
Strike Rate	1.00%
Interest Rate Swaption [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	$ 57,361
Amortized amount	48,337
Designated Benchmark Interest Rate	1-month LIBOR
Strike Rate	2.149%
Fair Value, Interest rate derivatives	(2,644)		0
Maturity Date	Apr. 30, 2016
Interest Rate Cap 1 [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	63,555	64,265
Designated Benchmark Interest Rate	USD - SIFMA municipal swap index
Strike Rate	1.00%
Fair Value, Interest rate derivatives	1		0
Maturity Date	Mar. 31, 2012
Interest Rate Cap 2 [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	69,750
Amortized amount	69,375
Designated Benchmark Interest Rate	3-month LIBOR
Strike Rate	3.00%
Fair Value, Interest rate derivatives	0		3
Maturity Date	Jan. 31, 2012
Pay fixed/receive variable swap 2 [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	35,905
Amortized amount	30,276
Designated Benchmark Interest Rate	1-month LIBOR
Strike Rate	2.187%
Fair Value, Interest rate derivatives	(1,709)		0
Maturity Date	Apr. 30, 2016
Pay fixed/receive variable swap 3 [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	13,427
Amortized amount	11,313
Designated Benchmark Interest Rate	1-month LIBOR
Strike Rate	2.142%
Fair Value, Interest rate derivatives	(615)		0
Maturity Date	Apr. 30, 2016
Pay fixed/receive variable swap 4 [Member]
Derivatives, Fair Value [Line Items]
Notional Amount	11,948
Amortized amount	10,083
Designated Benchmark Interest Rate	1-month LIBOR
Strike Rate	2.236%
Fair Value, Interest rate derivatives	$ (592)		$ 0
Maturity Date	Apr. 30, 2016