Condensed Consolidated Statement Of Changes In Equity - USD ($) $ in Thousands	Common Stock [Member] Class A Common Stock [Member]	Common Stock [Member] Class B Common Stock [Member]	Additional Paid-In Capital [Member] Class A Common Stock [Member]	Additional Paid-In Capital [Member] Class B Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Earnings [Member] Class A Common Stock [Member]	Accumulated Earnings [Member] Class B Common Stock [Member]	Accumulated Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Earnings [Member]	Accumulated Other Comprehensive Income [Member] Class A Common Stock [Member]	Accumulated Other Comprehensive Income [Member] Class B Common Stock [Member]	Accumulated Other Comprehensive Income [Member]	Total Shareholders' Equity [Member] Class A Common Stock [Member]	Total Shareholders' Equity [Member] Class B Common Stock [Member]	Total Shareholders' Equity [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Total Shareholders' Equity [Member]	Non-controlling Interests [Member] Class A Common Stock [Member]	Non-controlling Interests [Member] Class B Common Stock [Member]	Non-controlling Interests [Member]	Class A Common Stock [Member]	Class B Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Total
Beginning balance at Dec. 31, 2018					$ 162,429				$ 385,789			$ 1,215				$ 549,620			$ 87,988	$ 157	$ 30		$ 637,608
Beginning balance, shares at Dec. 31, 2018																				15,676,000	2,968,000
Net loss																							(2,986)
Net income (loss) excluding of loss attributable to redeemable noncontrolling interest									(10,149)							(10,149)			7,403				(2,746)
Purchase and retirement of common stock, value					(1,882)											(1,883)				$ (1)			(1,883)
Purchase and retirement of common stock, shares																				(80,000)
Other comprehensive income (loss)												264				264							264
Distributions to noncontrolling interests																			(2,443)				(2,443)
Common stock cash dividends declared						$ (1,971)	$ (484)						$ (1,971)	$ (484)						$ (1,971)	$ (484)
Share-based compensation					6,210											6,210							6,210
Ending balance (Accounting Standards Update 2016-01 [Member]) at Jun. 30, 2019								$ (2,202)							$ (2,202)							$ (2,202)
Ending balance at Jun. 30, 2019	$ 156	$ 30			166,757				370,983			1,479				539,405			92,948	$ 156	$ 30		632,353
Ending balance, shares at Jun. 30, 2019	15,596,000	2,968,000																		15,596,000	2,968,000
Beginning balance at Mar. 31, 2019	$ 157	$ 30			165,478				383,855			1,344				550,864			90,127				640,991
Beginning balance, shares at Mar. 31, 2019	15,676,000	2,968,000
Net loss																							(7,624)
Net income (loss) excluding of loss attributable to redeemable noncontrolling interest									(11,648)							(11,648)			4,044				(7,604)
Purchase and retirement of common stock, value	$ (1)				(1,882)											(1,883)							(1,883)
Purchase and retirement of common stock, shares	(80,000)
Other comprehensive income (loss)												135				135							135
Distributions to noncontrolling interests																			(1,223)				(1,223)
Common stock cash dividends declared						$ (982)	$ (242)						$ (982)	$ (242)						$ (982)	$ (242)
Share-based compensation					3,161											3,161							3,161
Ending balance (Accounting Standards Update 2016-01 [Member]) at Jun. 30, 2019								$ (2,202)							$ (2,202)							$ (2,202)
Ending balance at Jun. 30, 2019	$ 156	$ 30			166,757				370,983			1,479				539,405			92,948	$ 156	$ 30		632,353
Ending balance, shares at Jun. 30, 2019	15,596,000	2,968,000																		15,596,000	2,968,000
Beginning balance at Dec. 31, 2019					153,507				394,551			1,554				549,795			90,275	$ 151	$ 32		640,070
Beginning balance, shares at Dec. 31, 2019																				15,106,000	3,192,000
Net loss																							(67,466)
Net income (loss) excluding of loss attributable to redeemable noncontrolling interest									(64,110)							(64,110)			233				(63,877)
Other comprehensive income (loss)												(351)				(351)							(351)
Distributions to noncontrolling interests																			(923)				(923)
Bluegreen purchase and retirement of its common stock					(1,167)											(1,167)			(10,574)				$ (11,741)
Bluegreen purchase and retirement of its common stock, shares																							1,878,400
Accretion of redeemable noncontrolling interest									(1,247)							(1,247)							$ (1,247)
Conversion of Common Stock from Class B to Class A, shares																				27,000	(27,000)
Share-based compensation					5,675											5,675							5,675
Ending balance at Jun. 30, 2020	$ 151	$ 32			158,015				329,194			1,203				488,595			79,011	$ 151	$ 32		567,606
Ending balance, shares at Jun. 30, 2020	15,133,000	3,165,000																		15,133,000	3,165,000
Beginning balance at Mar. 31, 2020	$ 151	$ 32			155,071				365,690			967				521,911			79,016				600,927
Beginning balance, shares at Mar. 31, 2020	15,133,000	3,165,000
Net loss																							(36,651)
Net income (loss) excluding of loss attributable to redeemable noncontrolling interest									(35,800)							(35,800)			(5)				(35,805)
Other comprehensive income (loss)												236				236							236
Accretion of redeemable noncontrolling interest									(696)							(696)							(696)
Share-based compensation					2,944											2,944							2,944
Ending balance at Jun. 30, 2020	$ 151	$ 32			$ 158,015				$ 329,194			$ 1,203				$ 488,595			$ 79,011	$ 151	$ 32		$ 567,606
Ending balance, shares at Jun. 30, 2020	15,133,000	3,165,000																		15,133,000	3,165,000