Investments In Unconsolidated Joint Ventures (Narrative) (Details) - 6 months ended Jun. 30, 2017	NZD	USD ($)
Rialto Distribution [Member]
Schedule of Equity Method Investments [Line Items]
Gain on sale of investment	NZD 21,000	$ 15,000

The difference between the carrying value and the sale price of an investment. A gain would be recognized when the sale price of the investment is greater than the carrying value of the investment. This element refers to the Gain included in earnings and not to the cash proceeds of the sale.

No definition available.

Name:	us-gaap_GainOnSaleOfInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration