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Long-Term Investments (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Contributions to acquire interest			$ 12,000
Equity income from real estate ventures	3,258	9,489	3,002	16,774
Long-term investments accounted for under the equity method	13,977		13,977		8,595
Limited Partnership [Member]
Schedule of Equity Method Investments [Line Items]
Equity income from real estate ventures	829	(53)
Hedge Funds [Member]
Schedule of Equity Method Investments [Line Items]
Equity income from real estate ventures			1,462	770
Long-term investments accounted for under the equity method	$ 13,977		$ 13,977		$ 8,595

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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