Summary of Significant Accounting Policies (Goodwill and Other Intangible Assets, net) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 70,791	$ 70,791
Intangibles with a finite life, net	7,178	11,670
Total goodwill and other intangible assets, net	265,480	269,972
Intangible asset associated with benefit under the MSA
Finite-Lived Intangible Assets [Line Items]
Indefinite life intangibles:	107,511	107,511
Trademark - Douglas Elliman
Finite-Lived Intangible Assets [Line Items]
Indefinite life intangibles:	$ 80,000	$ 80,000