Acquisitions, Disposals, And Assets Held For Sale (Narrative) (Details) AUD in Thousands									3 Months Ended		12 Months Ended
	Feb. 25, 2016 USD ($)	Dec. 23, 2015 AUD ft² item property mi	Dec. 23, 2015 USD ($) ft² item property mi	Nov. 30, 2015 AUD ft²	Nov. 30, 2015 USD ($) ft²	Apr. 01, 2015 NZD property	May. 23, 2014 AUD	May. 23, 2014 USD ($)	Jun. 30, 2015 AUD	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)		Dec. 31, 2013 USD ($)		Mar. 31, 2016 NZD	Mar. 31, 2016 USD ($)	Dec. 31, 2015 AUD	Dec. 31, 2015 USD ($)	Nov. 29, 2015 ft²	Apr. 30, 2015 NZD	Apr. 30, 2015 USD ($)	Apr. 16, 2015 AUD	Apr. 16, 2015 USD ($)	Apr. 01, 2015 USD ($)	May. 12, 2014 AUD a	May. 12, 2014 USD ($) a
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Net assets acquired																		AUD 33,598	$ 24,349,000
Carrying value of property												$ 186,889,000	[1]	$ 191,660,000					210,298,000
Goodwill												21,281,000	[1]	22,159,000					$ 19,715,000
Gain on sale of assets											$ 11,023,000	25,000	[1]	(56,000)	[1]
Australia Country Cinemas, Pty Ltd [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Ownership percentage by parent																		75.00%	75.00%
Minimum [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Ownership percentage in equity method																		20.00%	20.00%
Lease term											1 year
Maximum [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Ownership percentage in equity method																		50.00%	50.00%
Lease term											35 years
Lake Taupo [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Number of land parcels sold | property						2
Sale price						NZD 3,400,000																			$ 2,300,000
Lake Taupo Parcel One [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Sale price																					NZD 2,200,000	$ 1,600,000
Carrying value of property																					NZD 1,800,000	$ 1,300,000
Lake Taupo Parcel Two [Member] | Scenario, Forecast [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Sale price																NZD 1,200,000	$ 821,000
Carrying value of property																NZD 615,000	$ 421,000
Property Adjacent To Newmarket [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Area of property | ft²				23,000	23,000
Total consideration				AUD 7,600	$ 5,500,000
Newmarket, Australia [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Area of property | ft²				227,000	227,000															204,000
Cannon Park, Queensland [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Percentage of acquisition completed		100.00%	100.00%
Number of land parcels acquired | property		2	2
Payment to acquire property		AUD 33,600	$ 24,300,000
Area of property | ft²		133,000	133,000
Distance between two properties, Miles | mi		6.0	6.0
Percentage of property leased											98.00%
Goodwill																			$ 0
Cannon Park, Queensland [Member] | Minimum [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Lease term											9 months
Cannon Park, Queensland [Member] | Maximum [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Lease term											8 years
Cannon Park City Centre [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Ownership percentage by parent		75.00%	75.00%
Number of major tenants | item		3	3
Number of specialty family oriented restaurant tenants | item		10	10
Cannon Park Discount Centre [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Number of retailers | item		4	4
Burwood [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Area of property | a																										50.6	50.6
Sale price																										AUD 65,000	$ 47,500,000
Proceeds from the sale property							AUD 6,500	$ 5,900,000
Remaining purchase price																		AUD 58,500	42,600,000
Sale agreements, prepayment as a percentage of net sale price											90.00%
Carrying value of property																		AUD 52,100	$ 38,000,000
Plano Cinema [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Proceeds from the sale property														1,900,000
Acquisition, liability incurred														320,000
Net assets acquired												$ 1,700,000
Net gain on acquisition and settlement														$ 1,400,000
Moonee Ponds [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Sale price																							AUD 23,000	$ 17,500,000
Gain on sale of assets									AUD 10,300	$ 8,000,000
Subsequent Event [Member] | Doheny Condo, Los Angeles [Member]
Acquisitions, Disposals, And Assets Held For Sale [Line Items]
Sale price	$ 3,000,000
Gain on sale of assets	$ 2,800,000

[1] Certain prior period amounts have been reclassified to conform to the current period presentation (see Note 2 - Significant Accounting Policies - Reclassifications).