Commitments And Contingencies (Narrative) (Details)	1 Months Ended	3 Months Ended		12 Months Ended
	Apr. 30, 2016 USD ($)	Mar. 31, 2017 NZD	Mar. 31, 2017 USD ($)	Dec. 31, 2016 NZD	Dec. 31, 2016 USD ($)	Aug. 03, 2016 shares	May 31, 2016 shares
Commitments And Contingencies [Line Items]
Total debt of unconsolidated joint ventures and entities		NZD 1,500,000	$ 1,100,000	NZD 1,500,000	$ 1,000,000
Share of unconsolidated debt, based on ownership percentage | NZD		500,000		500,000
Accrued debt		NZD 500,000	350,000	NZD 500,000	$ 348,000
Derivative Litigation And James J. Cotter, Jr. Employment Arbitration [Member]
Commitments And Contingencies [Line Items]
Amount of damages claimed by plaintiff			1,200,000
Litigation expense			645,000
Coverage limit			10,000,000
The STOMP Arbitration [Member]
Commitments And Contingencies [Line Items]
Settlement awarded	$ 2,300,000
Litigation interest percent	4.00%
Litigation payment received			$ 475,000
Litigation final payment date		June 2019	June 2019
Class B [Member] | Derivative Litigation And James J. Cotter, Jr. Employment Arbitration [Member]
Commitments And Contingencies [Line Items]
Shares held by estate | shares						100,000
Class B [Member] | Cotter Estate [Member] | Derivative Litigation And James J. Cotter, Jr. Employment Arbitration [Member]
Commitments And Contingencies [Line Items]
Shares held by estate | shares							327,808
Class B [Member] | Cotter Trust [Member] | Derivative Litigation And James J. Cotter, Jr. Employment Arbitration [Member]
Commitments And Contingencies [Line Items]
Shares held by estate | shares							696,080