Description Of Business And Segment Reporting (Reconciliation To Net Income Attributable To Common Shareholders) (Details) $ in Thousands, NZD in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 NZD	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Segment Reporting Information [Line Items]
Operating income	$ 7,760	$ 6,088		$ 13,291	$ 10,782
Depreciation and amortization expense	(4,054)	(3,828)		(7,987)	(7,635)
General and administrative expense	(6,118)	(6,006)		(12,291)	(12,197)
Income tax benefit (expense)	(5,846)	(1,663)		(7,549)	(2,894)
Equity earnings of unconsolidated joint ventures and entities	264	305		518	608	[1]
Gain on sale of assets	9,417			9,417	393	[1]
Gain on insurance recoveries	9,217		NZD 12.7	9,217
Other income (expense)	27	(46)		848	(104)
Income before income taxes	24,898	4,585		29,644	8,043
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	12,544	11,122		22,930	20,901
Corporate, Non-segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization expense	(110)	(99)		(214)	(194)
General and administrative expense	(4,674)	(4,935)		(9,425)	(9,925)
Interest expense, net	(1,787)	(1,762)		(3,647)	(3,636)
Equity earnings of unconsolidated joint ventures and entities	264	305		518	608
Gain on sale of assets	9,417			9,417	393
Gain on insurance recoveries	9,217			9,217
Other income (expense)	$ 27	$ (46)		$ 848	$ (104)

[1] Certain 2016 balances have been reclassified to conform to the 2017 presentation (see Note 2 - Summary of Significant Accounting Policies - Reclassifications).