Goodwill and Other Intangible Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 78,008,000	$ 77,568,000
Indefinite-lived Intangible Assets [Line Items]
Goodwill impairment	0
Finite-Lived Intangible Assets [Line Items]
Total goodwill and other intangible assets, net	265,993,000	266,611,000
Finite-lived intangible assets, gross	4,689,000	15,168,000
Less: accumulated amortization on amortizable intangibles	(4,215,000)	(13,636,000)
Finite-lived intangible assets, net	474,000	1,532,000
Unfavorable leases	0	4,022,000
Less: Accumulated amortization on amortizable intangibles	0	(3,076,000)
Unfavorable leases, net	0	946,000
Amortization expense	182,000	806,000	$ 871,000
Amortization of unfavorable lease		369,000	502,000
Intangible asset associated with benefit under the MSA
Indefinite-lived Intangible Assets [Line Items]
Indefinite life intangibles	107,511,000	107,511,000
Impairment of intangibles	0
Trademark - Douglas Elliman
Indefinite-lived Intangible Assets [Line Items]
Indefinite life intangibles	80,000,000	80,000,000
Impairment of intangibles	0
Favorable leases
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 0	13,444,000
Amortization expense		1,175,000	$ 1,373,000
Favorable leases | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	1 year
Favorable leases | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	10 years
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 4,689,000	$ 1,724,000
Other intangibles | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	1 year
Other intangibles | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	5 years
Unfavorable leases | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	1 year
Unfavorable leases | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Lives	10 years