Investments In Unconsolidated Joint Ventures (Narrative) (Details)	3 Months Ended		12 Months Ended
	Jun. 30, 2017 NZD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2017 item
Rialto Cinemas [Member]
Schedule of Equity Method Investments [Line Items]
Number of movie theatre			2
Number of screens on property			13
Equity Method Investment, Ownership Percentage			50.00%
Mt. Gravatt [Member]
Schedule of Equity Method Investments [Line Items]
Number of screens on property			16
Equity Method Investment, Ownership Percentage			33.30%
Rialto Distribution [Member]
Schedule of Equity Method Investments [Line Items]
Gain on sale of investment	$ 21,000	$ 15,000