Quarterly report pursuant to Section 13 or 15(d)

Nature of Business (Details)

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Nature of Business (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended 3 Months Ended
Jun. 30, 2012
Jun. 30, 2012
Taxable Reit Subsidiary [Member]
General and Administrative Expense [Member]
Income Statement Location [Line Items]    
Percentage of distribution of ordinary taxable income 90.00%  
Income tax expense   $ 0.2