Subsequent Events - (Details) (USD $)	5 Months Ended	12 Months Ended		29 Months Ended				3 Months Ended	16 Months Ended		3 Months Ended
	Dec. 31, 2010	Dec. 31, 2012 Property	Dec. 31, 2011 Property	Dec. 31, 2012	Dec. 31, 2012 Advisors Performance fee	Dec. 31, 2012 Minimum Advisors Performance fee	Dec. 31, 2012 Maximum Advisors Performance fee	Mar. 26, 2013 Subsequent event Property	Mar. 26, 2013 Subsequent event	Feb. 08, 2013 Subsequent event	Mar. 26, 2013 Subsequent event Line of credit
Subsequent Event [Line Items]
Business acquisition, percentage of voting interests acquired		100.00%	100.00%	100.00%				100.00%	100.00%
Total return threshold to receive performance fee						6.00%	10.00%
Performance fee, percent applied to total return on stockholders' capital between 6 percent and 10 percent					25.00%
Issuance of common stock	$ 200,000	$ 3,729,568	$ 10,000,000	$ 13,900,000					$ 26,000,000
Issuance of common stock, shares									1,659,582
Line of credit facility, increase, additional borrowings											1,100,000
Repayments of lines of credit	0	2,475,000	0								5,800,000
Line of credit, amount outstanding											16,000,000
Long-term debt, weighted average interest rate											2.80%
Line of credit, remaining borrowing capacity											5,000,000
Number of real estate acquistions (in number of properties)		1	9					3
Total purchase price		$ 1,780,767	$ 30,818,525	$ 1,780,767				$ 4,100,000	$ 4,100,000
Share Price, Base Net Asset Value										$ 15.00