New Valley LLC (Douglas Elliman Acquisition) (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Purchase of subsidiaries		$ 380	$ 10,404	$ 6,569
Contingent consideration liability		$ 3,147
Douglas Elliman
Business Acquisition [Line Items]
Voting interest acquired	29.41%		29.41%
Consideration	$ 40,000
Purchase of subsidiaries	10,000
Liabilities incurred	30,000
Contingent consideration liability	$ 6,304		$ 6,304
Ownership interest	100.00%		100.00%
Previous ownership interest	70.59%		70.59%