Goodwill and Other Intangible Assets (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Goodwill	$ 70,791us-gaap_Goodwill	$ 70,406us-gaap_Goodwill	$ 0us-gaap_Goodwill
Douglas Elliman Realty LLC [Member] \| Joshua & Company of Aspen, Inc. [Member]
Business Acquisition [Line Items]
Consideration transferred	500
Intangible assets	105
Goodwill	385
Net assets acquired	10
Goodwill expected to be deductible for tax purposes	$ 385

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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