Current Expected Credit Losses (Narrative) (Details) $ in Thousands	Dec. 31, 2020 USD ($) loan	Jan. 01, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Total shareholders’ equity	$ (659,687)		$ (685,016)	$ (547,366)	$ (331,760)
New Valley LLC
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	$ 15,928		3,100
Number of loans | loan	2
Total amortized cost basis	$ 15,928		15,276
Interest receivable	6,428		5,776
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total shareholders’ equity		$ 2,263	(2,263)	$ (1,550)	$ (4,576)
Allowance for credit losses		$ 3,100
Real estate broker agent receivables
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses	$ 7,038		$ 6,132