SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Gross Amounts of Which Carried at End of Year Total	$ 459,143	$ 1,165,663	$ 1,066,603	$ 1,003,545
Accumulated Depreciation	78,099	$ 177,546	$ 165,597	$ 150,038
Properties Held for Investment/Corporate Debt [Member]
Encumbrances	291,541
Initial Cost Land	142,898
Initial Cost Building &Improvements	258,322
Cost Capitalized Subsequent to Acquisition Improvements	85,012
Asset Impairment	(30,371)
Gross Amounts of Which Carried at End of Year Land	142,898
Gross Amounts of Which Carried at End of Year Building &Improvements	343,334
Gross Amounts of Which Carried at End of Year Total	455,861
Accumulated Depreciation	78,099
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member]
Encumbrances	94,760
Initial Cost Land	12,312
Initial Cost Building &Improvements	109,999
Cost Capitalized Subsequent to Acquisition Improvements	589
Gross Amounts of Which Carried at End of Year Land	12,312
Gross Amounts of Which Carried at End of Year Building &Improvements	110,588
Gross Amounts of Which Carried at End of Year Total	122,900
Accumulated Depreciation	6,934
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Chelsea, Beaumont [Member] | TEXAS
Encumbrances	8,953
Initial Cost Land	1,225
Initial Cost Building &Improvements	11,025
Gross Amounts of Which Carried at End of Year Land	1,225
Gross Amounts of Which Carried at End of Year Building &Improvements	11,025
Gross Amounts of Which Carried at End of Year Total	12,250
Accumulated Depreciation	$ 23
Date of Construction	1999
Date Acquired	18-Nov
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Farnham Park, Port Aurther [Member] | TEXAS
Encumbrances	$ 9,348
Initial Cost Land	1,010
Initial Cost Building &Improvements	9,086
Gross Amounts of Which Carried at End of Year Land	1,010
Gross Amounts of Which Carried at End of Year Building &Improvements	9,086
Gross Amounts of Which Carried at End of Year Total	$ 10,096
Date Acquired	18-Nov
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Landing, Houma [Member] | LOUISIANA
Encumbrances	$ 15,720
Initial Cost Land	2,012
Initial Cost Building &Improvements	18,115
Gross Amounts of Which Carried at End of Year Land	2,012
Gross Amounts of Which Carried at End of Year Building &Improvements	18,115
Gross Amounts of Which Carried at End of Year Total	20,127
Accumulated Depreciation	$ 38
Date Acquired	18-Dec
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Legacy at Pleasant Grove, Texarkana [Member] | TEXAS
Encumbrances	$ 14,224
Initial Cost Land	2,005
Initial Cost Building &Improvements	17,892
Cost Capitalized Subsequent to Acquisition Improvements	217
Gross Amounts of Which Carried at End of Year Land	2,005
Gross Amounts of Which Carried at End of Year Building &Improvements	18,109
Gross Amounts of Which Carried at End of Year Total	20,114
Accumulated Depreciation	$ 1,817
Date of Construction	2006
Date Acquired	14-Dec
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Toulon, Gautier [Member] | MONTSERRAT
Encumbrances	$ 19,844
Initial Cost Land	1,173
Initial Cost Building &Improvements	17,181
Cost Capitalized Subsequent to Acquisition Improvements	372
Gross Amounts of Which Carried at End of Year Land	1,173
Gross Amounts of Which Carried at End of Year Building &Improvements	17,553
Gross Amounts of Which Carried at End of Year Total	18,726
Accumulated Depreciation	$ 2,640
Date of Construction	2011
Date Acquired	9-Sep
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Villager, Ft. Walton [Member] | FLORIDA
Encumbrances	$ 693
Initial Cost Land	141
Initial Cost Building &Improvements	1,267
Gross Amounts of Which Carried at End of Year Land	141
Gross Amounts of Which Carried at End of Year Building &Improvements	1,267
Gross Amounts of Which Carried at End of Year Total	1,408
Accumulated Depreciation	$ 116
Date of Construction	1972
Date Acquired	15-Jun
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Villas at Bon Secour, Gulf Shores [Member] | ALABAMA
Encumbrances	$ 11,730
Initial Cost Land	2,715
Initial Cost Building &Improvements	15,385
Gross Amounts of Which Carried at End of Year Land	2,715
Gross Amounts of Which Carried at End of Year Building &Improvements	15,385
Gross Amounts of Which Carried at End of Year Total	18,100
Accumulated Depreciation	$ 160
Date of Construction	2007
Date Acquired	18-Jul
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Vista Ridge, Tupelo [Member] | MONTSERRAT
Encumbrances	$ 10,394
Initial Cost Land	1,339
Initial Cost Building &Improvements	13,398
Gross Amounts of Which Carried at End of Year Land	1,339
Gross Amounts of Which Carried at End of Year Building &Improvements	13,398
Gross Amounts of Which Carried at End of Year Total	14,737
Accumulated Depreciation	$ 1,544
Date of Construction	2009
Date Acquired	15-Oct
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Westwood, Mary Ester [Member] | FLORIDA
Encumbrances	$ 3,854
Initial Cost Land	692
Initial Cost Building &Improvements	6,650
Gross Amounts of Which Carried at End of Year Land	692
Gross Amounts of Which Carried at End of Year Building &Improvements	6,650
Gross Amounts of Which Carried at End of Year Total	7,343
Accumulated Depreciation	$ 596
Date of Construction	1972
Date Acquired	15-Jun
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member]
Encumbrances	$ 14,401
Initial Cost Land	8,263
Cost Capitalized Subsequent to Acquisition Improvements	17,026
Gross Amounts of Which Carried at End of Year Land	8,263
Gross Amounts of Which Carried at End of Year Building &Improvements	17,026
Gross Amounts of Which Carried at End of Year Total	25,289
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Forest Pines [Member]
Initial Cost Land	5,040
Cost Capitalized Subsequent to Acquisition Improvements	300
Gross Amounts of Which Carried at End of Year Land	5,040
Gross Amounts of Which Carried at End of Year Building &Improvements	300
Gross Amounts of Which Carried at End of Year Total	$ 5,340
Date Acquired	17-Jun
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Overlook at Allensville Square II, Seigerville [Member] | TUNISIA
Encumbrances	$ 10,529
Initial Cost Land	1,933
Cost Capitalized Subsequent to Acquisition Improvements	12,567
Gross Amounts of Which Carried at End of Year Land	1,933
Gross Amounts of Which Carried at End of Year Building &Improvements	12,567
Gross Amounts of Which Carried at End of Year Total	$ 14,500
Date Acquired	15-Nov
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Apalache Point [Member]
Cost Capitalized Subsequent to Acquisition Improvements	$ 21
Gross Amounts of Which Carried at End of Year Building &Improvements	21
Gross Amounts of Which Carried at End of Year Total	21
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Parc At Denham [Member]
Encumbrances	3,325
Initial Cost Land	714
Cost Capitalized Subsequent to Acquisition Improvements	4,138
Gross Amounts of Which Carried at End of Year Land	714
Gross Amounts of Which Carried at End of Year Building &Improvements	4,138
Gross Amounts of Which Carried at End of Year Total	4,852
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Sugar Mill II [Member]
Encumbrances	547
Initial Cost Land	576
Gross Amounts of Which Carried at End of Year Land	576
Gross Amounts of Which Carried at End of Year Total	576
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member]
Encumbrances	136,634
Initial Cost Land	33,527
Initial Cost Building &Improvements	148,323
Cost Capitalized Subsequent to Acquisition Improvements	51,912
Asset Impairment	(9,600)
Gross Amounts of Which Carried at End of Year Land	33,527
Gross Amounts of Which Carried at End of Year Building &Improvements	200,235
Gross Amounts of Which Carried at End of Year Total	224,162
Accumulated Depreciation	71,148
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member] | 600 Las Colinass Colinas [Member] | TEXAS
Encumbrances	37,926
Initial Cost Land	5,751
Initial Cost Building &Improvements	51,759
Cost Capitalized Subsequent to Acquisition Improvements	19,317
Gross Amounts of Which Carried at End of Year Land	5,751
Gross Amounts of Which Carried at End of Year Building &Improvements	71,076
Gross Amounts of Which Carried at End of Year Total	76,827
Accumulated Depreciation	$ 29,896
Date of Construction	1984
Date Acquired	5-Aug
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member] | 770 South Post Oak, Houston [Member] | TEXAS
Encumbrances	$ 12,394
Initial Cost Land	1,763
Initial Cost Building &Improvements	15,834
Cost Capitalized Subsequent to Acquisition Improvements	412
Gross Amounts of Which Carried at End of Year Land	1,763
Gross Amounts of Which Carried at End of Year Building &Improvements	16,246
Gross Amounts of Which Carried at End of Year Total	18,009
Accumulated Depreciation	$ 1,619
Date of Construction	1970
Date Acquired	15-July
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member] | Bridgeview Plaza, LaCrosse [Member] | WISCONSIN
Encumbrances	$ 4,423
Cost Capitalized Subsequent to Acquisition Improvements	1,157
Gross Amounts of Which Carried at End of Year Building &Improvements	1,157
Gross Amounts of Which Carried at End of Year Total	1,157
Accumulated Depreciation	$ 710
Date of Construction	1979
Date Acquired	3-Mar
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member] | Browning Place (Park West I), Farmers Branch [Member] | TEXAS
Encumbrances	$ 41,891
Initial Cost Land	5,096
Initial Cost Building &Improvements	45,868
Cost Capitalized Subsequent to Acquisition Improvements	22,848
Gross Amounts of Which Carried at End of Year Land	5,096
Gross Amounts of Which Carried at End of Year Building &Improvements	68,716
Gross Amounts of Which Carried at End of Year Total	73,812
Accumulated Depreciation	$ 26,556
Date of Construction	1984
Date Acquired	5-Apr
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member] | Mahogany Run Golf Course [Member] | VIRGIN ISLANDS, US
Accumulated Depreciation	$ 15
Date of Construction	1981
Date Acquired	14-Nov
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member] | Cross County Mall [Member] | ILLINOIS
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member] | Fruitland Plaza, Fruitland Park [Member] | FLORIDA
Initial Cost Land	$ 17
Cost Capitalized Subsequent to Acquisition Improvements	83
Gross Amounts of Which Carried at End of Year Land	17
Gross Amounts of Which Carried at End of Year Building &Improvements	83
Gross Amounts of Which Carried at End of Year Total	100
Accumulated Depreciation	$ 62
Date Acquired	May-92
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member] | Senlac VHP, Farmers Branch [Member] | TEXAS
Initial Cost Land	$ 622
Cost Capitalized Subsequent to Acquisition Improvements	142
Gross Amounts of Which Carried at End of Year Land	622
Gross Amounts of Which Carried at End of Year Building &Improvements	142
Gross Amounts of Which Carried at End of Year Total	764
Accumulated Depreciation	$ 142
Date Acquired	5-Aug
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member] | Stanford Center, Dallas [Member] | TEXAS
Encumbrances	$ 40,000
Initial Cost Land	20,278
Initial Cost Building &Improvements	34,862
Cost Capitalized Subsequent to Acquisition Improvements	7,953
Asset Impairment	(9,600)
Gross Amounts of Which Carried at End of Year Land	20,278
Gross Amounts of Which Carried at End of Year Building &Improvements	42,815
Gross Amounts of Which Carried at End of Year Total	53,493
Accumulated Depreciation	$ 12,148
Date Acquired	8-Jun
Life on Which Depreciation In Latest Statement of Operation is Computed	40 years
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member]
Encumbrances	$ 27,521
Initial Cost Land	88,796
Cost Capitalized Subsequent to Acquisition Improvements	15,485
Asset Impairment	(20,771)
Gross Amounts of Which Carried at End of Year Land	88,796
Gross Amounts of Which Carried at End of Year Building &Improvements	15,485
Gross Amounts of Which Carried at End of Year Total	83,510
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Bonneau Land, Farmers Branch [Member] | TEXAS
Initial Cost Land	1,309
Gross Amounts of Which Carried at End of Year Land	1,309
Gross Amounts of Which Carried at End of Year Total	$ 1,309
Date Acquired	14-Dec
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Cooks Lane, Fort Worth [Member] | TEXAS
Initial Cost Land	$ 1,094
Gross Amounts of Which Carried at End of Year Land	1,094
Gross Amounts of Which Carried at End of Year Total	$ 1,094
Date Acquired	4-Jun
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Dedeaux, Gulfport [Member] | MONTSERRAT
Initial Cost Land	$ 1,612
Cost Capitalized Subsequent to Acquisition Improvements	46
Asset Impairment	(38)
Gross Amounts of Which Carried at End of Year Land	1,612
Gross Amounts of Which Carried at End of Year Building &Improvements	46
Gross Amounts of Which Carried at End of Year Total	$ 1,620
Date Acquired	6-Oct
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Gautier Land, Gautier [Member] | MONTSERRAT
Initial Cost Land	$ 202
Gross Amounts of Which Carried at End of Year Land	202
Gross Amounts of Which Carried at End of Year Total	$ 202
Date Acquired	Jul-98
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Lake Shore Villas, Humble [Member] | TEXAS
Initial Cost Land	$ 81
Cost Capitalized Subsequent to Acquisition Improvements	3
Gross Amounts of Which Carried at End of Year Land	81
Gross Amounts of Which Carried at End of Year Building &Improvements	3
Gross Amounts of Which Carried at End of Year Total	$ 84
Date Acquired	2-Mar
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Lubbock Land, Lubbock [Member] | TEXAS
Initial Cost Land	$ 234
Gross Amounts of Which Carried at End of Year Land	234
Gross Amounts of Which Carried at End of Year Total	$ 234
Date Acquired	4-Jan
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Nakash, Malden [Member] | MACAU
Initial Cost Land	$ 103
Gross Amounts of Which Carried at End of Year Land	103
Gross Amounts of Which Carried at End of Year Total	$ 103
Date Acquired	Jan-93
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Nashville, Nashville [Member] | TUNISIA
Initial Cost Land	$ 278
Cost Capitalized Subsequent to Acquisition Improvements	59
Gross Amounts of Which Carried at End of Year Land	278
Gross Amounts of Which Carried at End of Year Building &Improvements	59
Gross Amounts of Which Carried at End of Year Total	$ 337
Date Acquired	2-Jun
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Ocean Estates, Gulfport [Member] | MONTSERRAT
Initial Cost Land	$ 1,418
Cost Capitalized Subsequent to Acquisition Improvements	390
Gross Amounts of Which Carried at End of Year Land	1,418
Gross Amounts of Which Carried at End of Year Building &Improvements	390
Gross Amounts of Which Carried at End of Year Total	$ 1,808
Date Acquired	7-Oct
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Texas Plaza Land, Irving [Member] | TEXAS
Initial Cost Land	$ 1,738
Asset Impairment	(238)
Gross Amounts of Which Carried at End of Year Land	1,738
Gross Amounts of Which Carried at End of Year Total	$ 1,500
Date Acquired	6-Dec
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Union Pacific Railroad Land, Dallas [Member] | TEXAS
Initial Cost Land	$ 130
Gross Amounts of Which Carried at End of Year Land	130
Gross Amounts of Which Carried at End of Year Total	$ 130
Date Acquired	4-Mar
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Willowick Land, Pensacola [Member] | FLORIDA
Initial Cost Land	$ 137
Gross Amounts of Which Carried at End of Year Land	137
Gross Amounts of Which Carried at End of Year Total	$ 137
Date Acquired	Jan-95
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Windmill Farms Land, Kaufman County [Member] | TEXAS
Encumbrances	$ 14,402
Initial Cost Land	57,345
Cost Capitalized Subsequent to Acquisition Improvements	13,911
Asset Impairment	(20,343)
Gross Amounts of Which Carried at End of Year Land	57,345
Gross Amounts of Which Carried at End of Year Building &Improvements	13,911
Gross Amounts of Which Carried at End of Year Total	$ 50,913
Date Acquired	11-Nov
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | 2427 Valley View Ln, Farmers Branch [Member] | TEXAS
Initial Cost Land	$ 76
Gross Amounts of Which Carried at End of Year Land	76
Gross Amounts of Which Carried at End of Year Total	$ 76
Date Acquired	12-July
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Lacy Longhorn Land, Farmers Branch [Member] | TEXAS
Initial Cost Land	$ 1,169
Cost Capitalized Subsequent to Acquisition Improvements	(760)
Gross Amounts of Which Carried at End of Year Land	1,169
Gross Amounts of Which Carried at End of Year Building &Improvements	(760)
Gross Amounts of Which Carried at End of Year Total	$ 409
Date Acquired	4-Jun
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Minivest Land, Dallas [Member] | TEXAS
Initial Cost Land	$ 7
Gross Amounts of Which Carried at End of Year Land	7
Gross Amounts of Which Carried at End of Year Total	$ 7
Date Acquired	13-Apr
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Mira Lago, Farmers Branch [Member] | TEXAS
Initial Cost Land	$ 53
Cost Capitalized Subsequent to Acquisition Improvements	15
Gross Amounts of Which Carried at End of Year Land	53
Gross Amounts of Which Carried at End of Year Building &Improvements	15
Gross Amounts of Which Carried at End of Year Total	$ 68
Date Acquired	1-May
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Nicholson Croslin, Dallas [Member] | TEXAS
Initial Cost Land	$ 184
Cost Capitalized Subsequent to Acquisition Improvements	(118)
Gross Amounts of Which Carried at End of Year Land	184
Gross Amounts of Which Carried at End of Year Building &Improvements	(118)
Gross Amounts of Which Carried at End of Year Total	$ 66
Date Acquired	Oct-98
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Nicholson Mendoza, Dallas [Member] | TEXAS
Initial Cost Land	$ 80
Cost Capitalized Subsequent to Acquisition Improvements	(51)
Gross Amounts of Which Carried at End of Year Land	80
Gross Amounts of Which Carried at End of Year Building &Improvements	(51)
Gross Amounts of Which Carried at End of Year Total	$ 29
Date Acquired	Oct-98
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Valley View 34 (Mercer Crossing), Farmers Branch [Member] | TEXAS
Initial Cost Land	$ 1,173
Cost Capitalized Subsequent to Acquisition Improvements	(945)
Gross Amounts of Which Carried at End of Year Land	1,173
Gross Amounts of Which Carried at End of Year Building &Improvements	(945)
Gross Amounts of Which Carried at End of Year Total	$ 228
Date Acquired	8-Aug
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Dominion Mercer, Farmers Branch, TX [Member] | TEXAS
Encumbrances	$ 6,400
Initial Cost Land	3,801
Cost Capitalized Subsequent to Acquisition Improvements	2,774
Asset Impairment	(133)
Gross Amounts of Which Carried at End of Year Land	3,801
Gross Amounts of Which Carried at End of Year Building &Improvements	2,774
Gross Amounts of Which Carried at End of Year Total	$ 6,442
Date Acquired	16-Oct
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | McKinney 36, Collin County [Member] | TEXAS
Encumbrances	$ 1,092
Initial Cost Land	456
Cost Capitalized Subsequent to Acquisition Improvements	161
Asset Impairment	(19)
Gross Amounts of Which Carried at End of Year Land	456
Gross Amounts of Which Carried at End of Year Building &Improvements	161
Gross Amounts of Which Carried at End of Year Total	$ 598
Date Acquired	Jan-98
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Travis Ranch Land, Kaufman County [Member] | TEXAS
Encumbrances	$ 307
Initial Cost Land	80
Gross Amounts of Which Carried at End of Year Land	80
Gross Amounts of Which Carried at End of Year Total	$ 80
Date Acquired	8-Aug
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Travis Ranch Retail, Kaufman City [Member] | TEXAS
Initial Cost Land	$ 1,517
Gross Amounts of Which Carried at End of Year Land	1,517
Gross Amounts of Which Carried at End of Year Total	$ 1,517
Date Acquired	8-Aug
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | GNB Land ARI 8/06 L2870 [Member]
Encumbrances	$ 2,220
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | GNB Land Edina 6/07 L2875 [Member]
Encumbrances	3,100
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Manhattan Land, Farmers Branch [Member] | TEXAS
Initial Cost Land	(344)
Asset Impairment	(344)
Gross Amounts of Which Carried at End of Year Building &Improvements	(344)
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Mercer Crossing Land L2876 [Member]
Initial Cost Land	12,029
Gross Amounts of Which Carried at End of Year Land	12,029
Gross Amounts of Which Carried at End of Year Total	12,029
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Mercer Crossing Land L2877 [Member]
Initial Cost Land	2,834
Gross Amounts of Which Carried at End of Year Land	2,834
Gross Amounts of Which Carried at End of Year Total	2,834
Properties Held for Investment/Corporate Debt [Member] | Corporate Departments/Investments/Misc [Member]
Encumbrances	18,225
Accumulated Depreciation	17
Properties Held for Investment/Corporate Debt [Member] | Corporate Departments/Investments/Misc [Member] | TCI - Corporate [Member]
Encumbrances	18,225
Accumulated Depreciation	17
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Sale [Member]
Encumbrances	376
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Sale [Member] | Dunes Plaza C2195 [Member]
Encumbrances	376
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member]
Initial Cost Land	5,111
Cost Capitalized Subsequent to Acquisition Improvements	621
Asset Impairment	(2,451)
Gross Amounts of Which Carried at End of Year Land	5,111
Gross Amounts of Which Carried at End of Year Building &Improvements	621
Gross Amounts of Which Carried at End of Year Total	3,281
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Dominion Tract, Dallas [Member] | TEXAS
Initial Cost Land	2,083
Cost Capitalized Subsequent to Acquisition Improvements	53
Gross Amounts of Which Carried at End of Year Land	2,083
Gross Amounts of Which Carried at End of Year Building &Improvements	53
Gross Amounts of Which Carried at End of Year Total	$ 2,136
Date Acquired	Mar-99
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Hollywood Casino Tract I, Farmers Branch [Member] | TEXAS
Initial Cost Land	$ (482)
Gross Amounts of Which Carried at End of Year Land	(482)
Gross Amounts of Which Carried at End of Year Total	$ (482)
Date Acquired	2-Jun
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Whorton Land Bentonville [Member] | ARGENTINA
Initial Cost Land	$ 3,510
Cost Capitalized Subsequent to Acquisition Improvements	568
Asset Impairment	(2,451)
Gross Amounts of Which Carried at End of Year Land	3,510
Gross Amounts of Which Carried at End of Year Building &Improvements	568
Gross Amounts of Which Carried at End of Year Total	$ 1,627
Date Acquired	5-Jun
Land Sold [Member]
Encumbrances	$ 291,917
Initial Cost Land	148,009
Initial Cost Building &Improvements	258,322
Cost Capitalized Subsequent to Acquisition Improvements	85,633
Asset Impairment	(32,822)
Gross Amounts of Which Carried at End of Year Land	148,009
Gross Amounts of Which Carried at End of Year Building &Improvements	343,955
Gross Amounts of Which Carried at End of Year Total	459,142
Accumulated Depreciation	$ 78,099