Segment Reporting (Schedule of Segments) (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Segment Profit (Loss)
Number of reportable segments | segment				4
Revenues		$ 48,063	$ 54,254	$ 80,016	$ 114,238
Earnings from equity method investments		19,393	11,098	44,425	22,866
Income from sales of real estate			96	492	708
Total revenue and other earnings		67,456	65,448	124,933	137,812
Other expense		(1,523)	(211)	(2,453)	(463)
Allocated interest expense		(24,149)	(28,641)	(53,392)	(57,450)
Allocated general and administrative		(12,744)	(15,603)	(26,546)	(31,534)
Segment profit (loss)		(8,071)	(21,127)	(19,182)	(31,796)
Other significant items:
Provision for (recovery of) loan losses		22,578	(2,158)	22,713	(5,800)
Provision for losses on net investment in leases		99	779	380	780
Impairment of assets		1,768	0	1,768	257
Depreciation and amortization		1,338	1,573	2,695	3,974
Capitalized expenditures		6,133	5,003	11,064	9,800
Segment assets
Real estate, net	[1]	90,231		90,231		$ 92,150
Real estate available and held for sale	[1]	1,970		1,970		301
Total real estate	[1]	92,201		92,201		92,451
Real estate and other assets available and held for sale and classified as discontinued operations		11,518		11,518		2,299,711
Net investment in leases		31,999		31,999		43,215
Land and development, net	[1]	259,718		259,718		286,810
Loans receivable and other lending investments, net		204,252		204,252		332,844
Loan receivable held for sale						43,215
Other investments	[1]	1,556,792		1,556,792		1,297,281
Total portfolio assets		2,156,480		2,156,480		4,395,527
Cash and other assets		1,454,140		1,454,140		445,007
Total assets	[1]	3,610,620		3,610,620		4,840,534
Stock-based compensation expense		(17,923)	14,791	(30,350)	20,299
Operating lease income
Segment Profit (Loss)
Revenues		3,182	4,792	6,291	9,723
Interest income
Segment Profit (Loss)
Revenues		4,221	8,084	9,169	17,874
Interest income from sales-type leases
Segment Profit (Loss)
Revenues		376	157	732	157
Other income
Segment Profit (Loss)
Revenues		15,881	8,903	24,521	21,917
Land development revenue
Segment Profit (Loss)
Revenues		24,403	32,318	39,303	64,567
Cost of sales expense		(24,095)	(30,803)	(38,591)	(60,126)
Real estate expense
Segment Profit (Loss)
Cost of sales expense		(13,016)	(11,317)	(23,133)	(20,035)
Operating Segments | Net Lease
Segment Profit (Loss)
Earnings from equity method investments		15,240	9,703	33,038	21,115
Income from sales of real estate				492
Total revenue and other earnings		20,835	13,688	44,017	28,596
Other expense		(521)		(992)
Allocated interest expense		(13,162)	(14,566)	(29,377)	(28,891)
Allocated general and administrative		(3,838)	(6,120)	(8,854)	(12,057)
Segment profit (loss)		2,853	(7,010)	4,137	(12,820)
Other significant items:
Provision for losses on net investment in leases		99	779	380	780
Depreciation and amortization			1
Segment assets
Real estate and other assets available and held for sale and classified as discontinued operations		11,518		11,518		2,299,711
Net investment in leases		31,999		31,999		43,215
Loan receivable held for sale						43,215
Other investments		1,471,053		1,471,053		1,186,162
Total portfolio assets		1,514,570		1,514,570		3,572,303
Operating Segments | Net Lease | Interest income
Segment Profit (Loss)
Revenues			299	75	317
Operating Segments | Net Lease | Interest income from sales-type leases
Segment Profit (Loss)
Revenues		376	157	732	157
Operating Segments | Net Lease | Other income
Segment Profit (Loss)
Revenues		5,219	3,529	9,680	7,007
Operating Segments | Net Lease | Real estate expense
Segment Profit (Loss)
Cost of sales expense		(461)	(12)	(657)	(468)
Operating Segments | Real Estate Finance
Segment Profit (Loss)
Earnings from equity method investments		769	755	1,783	1,220
Total revenue and other earnings		5,016	8,592	10,914	18,928
Other expense		(40)	(87)	(159)	(153)
Allocated interest expense		(2,196)	(3,828)	(5,336)	(8,406)
Allocated general and administrative		(1,226)	(1,242)	(2,350)	(2,701)
Segment profit (loss)		1,554	3,435	3,069	7,668
Other significant items:
Provision for (recovery of) loan losses		22,578	(2,158)	22,713	(5,800)
Segment assets
Loans receivable and other lending investments, net		204,252		204,252		332,844
Other investments		23,219		23,219		48,862
Total portfolio assets		227,471		227,471		381,706
Operating Segments | Real Estate Finance | Interest income
Segment Profit (Loss)
Revenues		4,221	7,785	9,094	17,557
Operating Segments | Real Estate Finance | Other income
Segment Profit (Loss)
Revenues		26	52	37	151
Operating Segments | Operating Properties
Segment Profit (Loss)
Earnings from equity method investments		3,673	(2,935)	3,718	(6,682)
Income from sales of real estate			96		708
Total revenue and other earnings		14,347	5,817	20,029	9,857
Allocated interest expense		(1,139)	(2,030)	(2,480)	(4,073)
Allocated general and administrative		(625)	(664)	(1,103)	(1,324)
Segment profit (loss)		4,322	(3,133)	2,313	(5,595)
Other significant items:
Impairment of assets		1,750		1,750	257
Depreciation and amortization		969	1,221	1,955	3,208
Capitalized expenditures		320	432	540	489
Segment assets
Real estate, net		90,231		90,231		92,150
Real estate available and held for sale		1,970		1,970		301
Total real estate		92,201		92,201		92,451
Other investments		38,168		38,168		43,252
Total portfolio assets		130,369		130,369		135,703
Operating Segments | Operating Properties | Operating lease income
Segment Profit (Loss)
Revenues		3,082	4,703	6,056	9,540
Operating Segments | Operating Properties | Other income
Segment Profit (Loss)
Revenues		7,592	3,953	10,255	6,291
Operating Segments | Operating Properties | Real estate expense
Segment Profit (Loss)
Cost of sales expense		(8,261)	(6,256)	(14,133)	(10,055)
Operating Segments | Land and Development
Segment Profit (Loss)
Earnings from equity method investments		100	1,474	3,665	4,619
Total revenue and other earnings		25,921	35,196	45,838	72,073
Other expense		(238)		(320)
Allocated interest expense		(2,745)	(3,864)	(6,988)	(7,802)
Allocated general and administrative		(2,114)	(2,367)	(4,369)	(4,795)
Segment profit (loss)		(7,565)	(6,887)	(12,773)	(10,162)
Other significant items:
Depreciation and amortization		227	228	456	446
Capitalized expenditures		5,813	4,571	10,524	9,311
Segment assets
Land and development, net		259,718		259,718		286,810
Other investments		290		290		1,096
Total portfolio assets		260,008		260,008		287,906
Operating Segments | Land and Development | Operating lease income
Segment Profit (Loss)
Revenues		100	89	235	183
Operating Segments | Land and Development | Other income
Segment Profit (Loss)
Revenues		1,318	1,315	2,635	2,704
Operating Segments | Land and Development | Land development revenue
Segment Profit (Loss)
Revenues		24,403	32,318	39,303	64,567
Cost of sales expense		(24,095)	(30,803)	(38,591)	(60,126)
Operating Segments | Land and Development | Real estate expense
Segment Profit (Loss)
Cost of sales expense		(4,294)	(5,049)	(8,343)	(9,512)
Corporate/Other
Segment Profit (Loss)
Earnings from equity method investments		(389)	2,101	2,221	2,594
Total revenue and other earnings		1,337	2,155	4,135	8,358
Other expense		(724)	(124)	(982)	(310)
Allocated interest expense		(4,907)	(4,353)	(9,211)	(8,278)
Allocated general and administrative		(4,941)	(5,210)	(9,870)	(10,657)
Segment profit (loss)		(9,235)	(7,532)	(15,928)	(10,887)
Other significant items:
Impairment of assets		18		18
Depreciation and amortization		142	123	284	320
Segment assets
Other investments		24,062		24,062		17,909
Total portfolio assets		24,062		24,062		$ 17,909
Corporate/Other | Other income
Segment Profit (Loss)
Revenues		$ 1,726	$ 54	$ 1,914	$ 5,764

[1] Refer to Note 2 for details on the Company’s consolidated variable interest entities (“VIEs”).