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Other Investments (Schedule of Summarized Investee Financial Information) (Details) - Marina Palms - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Equity Method Investments, Summarized Financial Information [Line Items]
Revenues	$ 12,315	$ 23,669
Expenses	(7,873)	(14,911)
Net Income Attributable to Parent Entities	$ 4,442	$ 8,758

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