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Subsequent Events (Details)
Sep. 30, 2013
USD ($)
Dec. 31, 2012
USD ($)
Sep. 30, 2013
Moonee Ponds [Member]
USD ($)
acre
Sep. 30, 2013
Moonee Ponds [Member]
AUD
Oct. 15, 2013
Moonee Ponds [Member]
Subsequent Event [Member]
AUD
Apr. 16, 2015
Moonee Ponds [Member]
Scenario, Forecast [Member]
AUD
Subsequent Event [Line Items]            
Sales price           23,000,000
Down payment received         2,300,000  
Down payment percentage         10.00%  
Area of property     3.3 3.3    
Carrying value of property $ 193,297,000 $ 202,778,000 $ 11,600,000 12,400,000