Formation and Organization (Details) (USD $)	3 Months Ended	12 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Formation and Organization
Number of employees	0
Non-controlling interests
Limited partnership interest in the OP (as a percent)	99.97%
Advisor
Non-controlling interests
Non-controlling interest contributions in OP	$ 1,000	$ 1,000
Special Unit Holder
Non-controlling interests
Non-controlling interest contributions in OP	$ 1,000	$ 1,000

The net cash inflow or outflow from noncontrolled interest to increase or decrease the number of shares they have in the entity. This does not include dividends paid to the noncontrolling interest.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 18

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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Data Type:	xbrli:monetaryItemType
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Period Type:	duration