Real Estate Transactions (Schedule Of The Total Transaction Gain) (Details) - Burwood [Member] $ in Thousands, $ in Millions		Dec. 31, 2019 AUD ($)	May 12, 2014 AUD ($)	May 12, 2014 USD ($)
Property, Plant and Equipment [Line Items]
Selling price		$ 64,925	$ 65,000	$ 50.6
Less: Property book value		(52,108)
Total transaction gain, gross		12,817
Less: Direct costs incurred	[1]	(439)
Total transaction gain, net		$ 12,378

[1] Represents commissions and legal expenses incurred in connection with this transaction.