Represents the number of years the interest rate swaps and caps have until maturity.

No definition available.

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

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- Definition

Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

+ Details

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- Definition

The amount of the obligation to return cash collateral under master netting arrangements that have not been offset against net derivative instrument positions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41678-113959

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- Definition

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 205G

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44C

-Subparagraph a

-Clause 1

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (a),(c)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

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Derivative Instruments Interest Rate Caps (Details) (USD $)					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Not Designated as Hedging Instrument [Member] Interest Rate Cap [Member]	Dec. 31, 2011 Not Designated as Hedging Instrument [Member] Interest Rate Cap [Member]	Dec. 31, 2012 Derivative Counterparty, SunTrust [Member] Not Designated as Hedging Instrument [Member] Years	Dec. 31, 2012 Derivative Counterparty, SunTrust [Member] Not Designated as Hedging Instrument [Member] Interest Rate Caps, Maturity Date, July 29, 2021, 2.50% [Member]	Dec. 31, 2011 Derivative Counterparty, SunTrust [Member] Not Designated as Hedging Instrument [Member] Interest Rate Caps, Maturity Date, July 29, 2021, 2.50% [Member]	Dec. 31, 2012 Derivative Counterparty, SunTrust [Member] Not Designated as Hedging Instrument [Member] Interest Rate Caps, Maturity Date, July 8, 2021, 2.50% [Member]	Dec. 31, 2011 Derivative Counterparty, SunTrust [Member] Not Designated as Hedging Instrument [Member] Interest Rate Caps, Maturity Date, July 8, 2021, 2.50% [Member]	Dec. 31, 2012 Derivative Counterparty, SunTrust [Member] Not Designated as Hedging Instrument [Member] Interest Rate Caps, Maturity Date, July 7, 2021, 2.50% [Member]	Dec. 31, 2011 Derivative Counterparty, SunTrust [Member] Not Designated as Hedging Instrument [Member] Interest Rate Caps, Maturity Date, July 7, 2021, 2.50% [Member]	Dec. 31, 2012 Derivative Counterparty, SunTrust [Member] Not Designated as Hedging Instrument [Member] Interest Rate Cap [Member]	Dec. 31, 2011 Derivative Counterparty, SunTrust [Member] Not Designated as Hedging Instrument [Member] Interest Rate Cap [Member]
Derivative [Line Items]
Derivative Instruments, Interest Rate Swaps and Caps, Duration					7
Derivative, Notional Amount						$ 27,000,000		$ 12,000,000		$ 40,000,000		$ 79,000,000
Derivative, Cap Interest Rate					2.50%
Derivative instruments			3,247,000	0		1,123,000	0	490,000	0	1,634,000	0	3,247,000	0
Derivative, Collateral, Obligation to Return Cash	$ 328,700,000	$ 165,400,000			$ 1,200,000