Related Party Transactions (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Related Party Transactions (Textual) [Abstract]
Management and Advisory fee percentage on NAV		0.85%
Payments of Stock Issuance Costs		$ 460	$ 0	$ 0
Related Party Transactions (Additional Textual) [Abstract]
Property management services expense paid		634	453	302
Fixed fee [Member]
Related Party Transactions (Textual) [Abstract]
Management and Advisory fee percentage on NAV	1.25%	0.75%
Reduced percentage of Management and Advisory fee on NAV		0.10%
Management and Advisory fees		2,406	1,789	1,868
Manager and advisory fees payable	324	324	472
performance fee [Member]
Related Party Transactions (Textual) [Abstract]
Management and Advisory fee percentage on NAV	10.00%
Hurdle Rate [Member]
Related Party Transactions (Textual) [Abstract]
Management and Advisory fee percentage on NAV	7.00%
Variable fees [Member]
Related Party Transactions (Textual) [Abstract]
Management and advisory fee percentage on cash flows		7.50%
Increase in Management and Advisory fee percentage on cash flows		1.87%
Management and Advisory fees		333	1,017	1,396
Manager and advisory fees payable	0	0	176
Selling commission, Dealer Manager Fee, Distribution Fee [Member]
Related Party Transactions (Textual) [Abstract]
Payments of Stock Issuance Costs		(165)
Organization and Offering Costs [Member]
Related Party Transactions (Textual) [Abstract]
Payments of Stock Issuance Costs		$ (2,719)