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Equity (Details 3) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2011
Dividends [Abstract]
Minimum percentage of taxable income (excluding net capital gains) to be distributed in order to qualify as REIT	90.00%
Percentage of taxable income (including net capital gains) to be distributed in order to qualify as REIT	100.00%
Operating loss carryforwards		$ 423.9

X

- Definition

Represents the minimum percentage of taxable income (excluding capital gains) to be distributed in order to qualify as REIT.

+ References

No definition available.

+ Details

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X

- Definition

Represents the percentage of taxable income (including capital gains) to be distributed in order to qualify as REIT.

+ References

No definition available.

+ Details

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- Details

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X

- Definition

The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 109

-Paragraph 48

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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