Discontinued Operations (Assets And Liabilities Of Discontinued Operations) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Total current assets	$ 0	$ 148,365
Long-term assets of discontinued operations	0	305,617
Current liabilities:
Total current liabilities	0	99,649
Long-term liabilities of discontinued operations	0	204,112
Distribution | Douglas Elliman
Current assets:
Cash and cash equivalents	0	94,421
Accounts receivable - trade, net	0	24,377
Other current assets	0	29,567
Total current assets	0	148,365
Property, plant and equipment, net	0	42,703
Long-term investments (includes $237 at fair value)	0	237
Operating lease right-of-use assets	0	133,103
Goodwill and other intangible assets, net	0	100,066
Other assets	0	29,508
Long-term assets of discontinued operations	0	305,617
Total assets	0	453,982
Current liabilities:
Current portion of notes payable and long-term debt	0	12,500
Current operating lease liability	0	23,753
Income taxes payable, net	0	17
Other current liabilities	0	63,379
Total current liabilities	0	99,649
Notes payable, long-term debt and other obligations, less current portion	0	12,920
Deferred income taxes, net	0	13,512
Non-current operating lease liability	0	143,296
Other liabilities	0	34,384
Long-term liabilities of discontinued operations	0	204,112
Total liabilities	$ 0	$ 303,761