Mortgage Note Payable (Schedule of Mortgage Notes Payable) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Jun. 30, 2012		Dec. 31, 2011
Debt Instrument [Line Items]
Outstanding Loan Amount	$ 30,260		$ 30,260
Mortgages [Member]
Debt Instrument [Line Items]
Encumbered Properties, in properties	28		28
Outstanding Loan Amount	$ 30,260		$ 30,260
Weighted Average Effective Interest Rate	4.67%	[1]	4.67%	[1]
Weighted Average Maturity Term	3 years 9 months 26 days	[2]	4 years 3 months 26 days	[2]
Minimum [Member] | Mortgages [Member]
Debt Instrument [Line Items]
Effective Interest Rate	3.80%		3.75%
Maximum [Member] | Mortgages [Member]
Debt Instrument [Line Items]
Effective Interest Rate	5.32%		4.89%

[1] Mortgage notes payable have fixed rates. Effective interest rates range from 3.80% to 5.32% both at June 30, 2012 and December 31, 2011.

[2] Weighted average remaining years until maturity as of June 30, 2012 and December 31, 2011, respectively.