Commitments And Contingencies (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Like-kind exchange deposits and reverse exchange property	$ 186,086,000	$ 202,184,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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