Commitments And Contingencies (Narrative) (Details)	1 Months Ended	12 Months Ended					24 Months Ended
	Apr. 30, 2016 USD ($)	Dec. 31, 2016 NZD	Dec. 31, 2016 USD ($)	Dec. 31, 2015 NZD	Dec. 31, 2015 USD ($)		Dec. 31, 2016 USD ($)	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	$ 1,000,000	NZD 1,500,000	$ 1,000,000
Share of unconsolidated debt, based on ownership percentage | NZD		500,000		500,000
Accrued debt		500,000	348,000	NZD 500,000	342,000
State tax obligation			(954,000)		$ (514,000)	[1]
Coverage limit		NZD 35,900,000	25,000,000
Tax Audit/Litigation [Member]
Commitments And Contingencies [Line Items]
Income tax obligation			2,600,000				$ 2,600,000
Derivative Litigation And James J. Cotter, Jr. Employment Arbitration [Member]
Commitments And Contingencies [Line Items]
Litigation expense			12,800,000				$ 14,900,000
Insurance deductible			500,000
Coverage limit			10,000,000
Incurred expenses exceeding insurance limit			3,800,000
The STOMP Arbitration [Member]
Commitments And Contingencies [Line Items]
Settlement awarded	$ 2,300,000
Litigation interest percent	4.00%
Litigation payment received			$ 415,000
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

[1] 2015 and 2014 balances included the restatement impact as a result of a change in accounting principle (see Note 2 - Summary of Significant Accounting Policies - Accounting Changes).