Notes Payable (Australian Shopping Center Loans) (Narrative) (Details) (Australian Shopping Center Loans [Member])	1 Months Ended		12 Months Ended
	Jul. 31, 2004 USD ($) loan	Jul. 31, 2004 AUD	Dec. 31, 2012 USD ($)	Dec. 31, 2012 AUD	Dec. 31, 2011 USD ($)	Dec. 31, 2011 AUD	Dec. 31, 2010 USD ($)	Dec. 31, 2010 AUD
Debt Instrument [Line Items]
Number of loans assumed	3	3
Total amount of loans assumed	$ 1,500,000	2,100,000
Annual principal payment			182,000	175,000
Repayment of debt			$ 182,000	175,000	$ 256,000	250,000	$ 51,000	51,000