Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 13, 2013
Income Tax Contingency [Line Items]
Income before provision for income taxes	$ 29,357	$ 31,669	$ 94,321	$ 57,272
Income tax expense using estimated annual effective income tax rate	11,557	9,932	37,238	17,962
Changes in effective tax rates	1,539	(374)	0	0
Impact of discrete items, net	412	1,305	313	1,944
Inclusion of tax liabilities from unincorporated entities	0	1,101	0	1,101
Income tax expense	$ 13,508	$ 11,964	$ 37,551	21,007
Other Comprehensive Income [Member]
Income Tax Contingency [Line Items]
Impact of discrete items, net				440
Additional Paid-in Capital [Member]
Income Tax Contingency [Line Items]
Impact of discrete items, net				865
Income Tax Expense [Member]
Income Tax Contingency [Line Items]
Impact of discrete items, net				$ 639
New Valley LLC [Member] | Douglas Elliman Realty LLC [Member]
Income Tax Contingency [Line Items]
Percent of interest acquired					20.59%