Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary Of Significant Accounting Policies [Line Items]
Buildings, Useful Life	40 years 0 months 0 days
Land Improvements, Useful Life	15 years 0 months 0 days
Investments in unconsolidated joint ventures	$ 234,774,000	$ 0
Cash and cash equivalents	233,377,000	5,354,000	10,222,000	349,000
Cash in excess of FDIC limit	228,800,000	3,300,000
Stock Repurchase Program, Annual Authorized Amount as a Percentage of Weighted Average Shares Outstanding at the End of Prior Year	5.00%
Stock Repurchase Program, Quarterly Authorized Amount as a Percentage of Weighted Average Shares Outstanding at the end of Prior Year	1.25%
Deferred Tax Assets, Net of Valuation Allowance	200,000
Deferred Tax Assets, Gross	200,000
Operating Loss Carryforwards	$ 400,000
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Fixtures, Useful life	5 years 0 months 0 days
Lease Up Period	6 months
Real Estate Property, Weighted Average Remaining Lease Term	1 year
Minimum [Member] | One Year [Member]
Summary Of Significant Accounting Policies [Line Items]
Repurchase Price, Share Repurchase Program	$ 9.25
Minimum [Member] | Two Years [Member]
Summary Of Significant Accounting Policies [Line Items]
Repurchase Price, Share Repurchase Program	$ 9.50
Minimum [Member] | Three Years [Member]
Summary Of Significant Accounting Policies [Line Items]
Repurchase Price, Share Repurchase Program	$ 9.75
Minimum [Member] | Four Years [Member]
Summary Of Significant Accounting Policies [Line Items]
Repurchase Price, Share Repurchase Program	$ 10.00
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Fixtures, Useful life	15 years 0 months 0 days
Lease Up Period	12 months
Real Estate Property, Weighted Average Remaining Lease Term	29 years
Liability for Initial Public Offering Costs, Percentage of Gross Proceeds	1.50%
Liability for Gross Initial Public Offering Costs, Percentage of Gross Proceeds	11.50%
Maximum [Member] | One Year [Member]
Summary Of Significant Accounting Policies [Line Items]
Repurchase Price, Share Repurchase Program, Percentage of Value of Capital Paid	92.50%
Maximum [Member] | Two Years [Member]
Summary Of Significant Accounting Policies [Line Items]
Repurchase Price, Share Repurchase Program, Percentage of Value of Capital Paid	95.00%
Maximum [Member] | Three Years [Member]
Summary Of Significant Accounting Policies [Line Items]
Repurchase Price, Share Repurchase Program, Percentage of Value of Capital Paid	97.50%
Maximum [Member] | Four Years [Member]
Summary Of Significant Accounting Policies [Line Items]
Repurchase Price, Share Repurchase Program, Percentage of Value of Capital Paid	100.00%