Property And Equipment (Narrative) (Details)	3 Months Ended		9 Months Ended					9 Months Ended
	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Dec. 31, 2013 USD ($)	Sep. 30, 2014 Moonee Ponds [Member] USD ($)	Sep. 30, 2014 Moonee Ponds [Member] AUD	Sep. 30, 2014 Burwood [Member] USD ($) acre	Sep. 30, 2014 Burwood [Member] AUD
Property, Plant and Equipment [Line Items]
Depreciation expense for property and equipment	$ 3,700,000	$ 3,200,000	$ 10,700,000	$ 10,400,000
Sales price						21,300,000	23,000,000	54,600,000	65,000,000
Carrying value of property	185,925,000		185,925,000		191,660,000	10,800,000	12,400,000	45,500,000	52,100,000
Area of property								50.6	50.6
Proceeds from the sale property								5,900,000	6,500,000
Sale agreements, prepayment as a percentage of net sale price								90.00%	90.00%
Decrease in investment and development property								$ 48,000,000