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SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Gross Amounts of Which Carried at End of Year Total $ 1,017,684 $ 1,003,545 $ 831,540 $ 848,062
Accumulated Depreciation 165,597 150,038 $ 131,777 $ 147,768
Properties Held for Investment/Corporate Debt [Member]        
Encumbrances   885,278    
Initial Cost Land   176,535    
Initial Cost Building &Improvements   796,227    
Cost Capitalized Subsequent to Acquisition Improvements   85,919    
Asset Impairment   (39,989)    
Gross Amounts of Which Carried at End of Year Land   169,360    
Gross Amounts of Which Carried at End of Year Building & Improvements   866,403    
Gross Amounts of Which Carried at End of Year Total   1,017,684    
Accumulated Depreciation   165,597    
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member]        
Encumbrances 553,509      
Initial Cost Land 57,396      
Initial Cost Building &Improvements 634,328      
Cost Capitalized Subsequent to Acquisition Improvements 5,806      
Asset Impairment (3,180)      
Gross Amounts of Which Carried at End of Year Land 57,396      
Gross Amounts of Which Carried at End of Year Building & Improvements 640,135      
Gross Amounts of Which Carried at End of Year Total 694,351      
Accumulated Depreciation 97,580      
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Anderson Estates, Oxford [Member] | MONTSERRAT        
Encumbrances 796      
Initial Cost Land 378      
Initial Cost Building &Improvements 2,683      
Cost Capitalized Subsequent to Acquisition Improvements 313      
Gross Amounts of Which Carried at End of Year Land 378      
Gross Amounts of Which Carried at End of Year Building & Improvements 2,996      
Gross Amounts of Which Carried at End of Year Total 3,373      
Accumulated Depreciation $ 732      
Date of Construction 2003      
Date Acquired 01/06      
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] | Blue Lake Villas I, Waxahachie [Member] | TEXAS        
Encumbrances $ 10,589      
Initial Cost Land 526      
Initial Cost Building &Improvements 10,784      
Cost Capitalized Subsequent to Acquisition Improvements (601)      
Gross Amounts of Which Carried at End of Year Land 526      
Gross Amounts of Which Carried at End of Year Building & Improvements 10,183      
Gross Amounts of Which Carried at End of Year Total 10,709      
Accumulated Depreciation $ 3,533      
Date of Construction 2003      
Date Acquired 01/02      
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] | Blue Lake Villas II, Waxahachie [Member] | TEXAS        
Encumbrances $ 3,832      
Initial Cost Land 287      
Initial Cost Building &Improvements 4,451      
Cost Capitalized Subsequent to Acquisition Improvements 45      
Gross Amounts of Which Carried at End of Year Land 287      
Gross Amounts of Which Carried at End of Year Building & Improvements 4,496      
Gross Amounts of Which Carried at End of Year Total 4,783      
Accumulated Depreciation $ 1,023      
Date of Construction 2004      
Date Acquired 01/04      
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] | Breakwater Bay, Beaumont [Member] | TEXAS        
Encumbrances $ 9,271      
Initial Cost Land 740      
Initial Cost Building &Improvements 10,435      
Cost Capitalized Subsequent to Acquisition Improvements 63      
Gross Amounts of Which Carried at End of Year Land 740      
Gross Amounts of Which Carried at End of Year Building & Improvements 10,498      
Gross Amounts of Which Carried at End of Year Total 11,238      
Accumulated Depreciation $ 3,123      
Date of Construction 2004      
Date Acquired 05/03      
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] | Bridgewood Ranch, Kaufman [Member] | TEXAS        
Encumbrances $ 6,340      
Initial Cost Land 762      
Initial Cost Building &Improvements 6,856      
Cost Capitalized Subsequent to Acquisition Improvements 57      
Gross Amounts of Which Carried at End of Year Land 762      
Gross Amounts of Which Carried at End of Year Building & Improvements 6,913      
Gross Amounts of Which Carried at End of Year Total 7,675      
Accumulated Depreciation $ 1,553      
Date of Construction 2007      
Date Acquired 04/08      
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] | Capitol Hill, Little Rock [Member] | ARGENTINA        
Encumbrances $ 8,893      
Initial Cost Land 1,860      
Initial Cost Building &Improvements 7,948      
Cost Capitalized Subsequent to Acquisition Improvements 55      
Gross Amounts of Which Carried at End of Year Land 1,860      
Gross Amounts of Which Carried at End of Year Building & Improvements 8,002      
Gross Amounts of Which Carried at End of Year Total 9,862      
Accumulated Depreciation $ 2,506      
Date of Construction 2003      
Date Acquired 03/03      
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] | Centennial, Oak Ridge [Member] | TUNISIA        
Encumbrances $ 20,794      
Initial Cost Land 2,570      
Initial Cost Building &Improvements 22,589      
Gross Amounts of Which Carried at End of Year Land 2,570      
Gross Amounts of Which Carried at End of Year Building & Improvements 22,589      
Gross Amounts of Which Carried at End of Year Total 25,159      
Accumulated Depreciation $ 800      
Date of Construction 2011      
Date Acquired 07/14      
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] | Curtis Moore Estates, Greenwood [Member] | MONTSERRAT        
Encumbrances $ 1,444      
Initial Cost Land 186      
Initial Cost Building &Improvements 5,733      
Cost Capitalized Subsequent to Acquisition Improvements 946      
Gross Amounts of Which Carried at End of Year Land 186      
Gross Amounts of Which Carried at End of Year Building & Improvements 6,679      
Gross Amounts of Which Carried at End of Year Total 6,865      
Accumulated Depreciation $ 1,772      
Date of Construction 2003      
Date Acquired 01/06      
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] | Crossing at Opelika, Opelika [Member] | ALABAMA        
Encumbrances $ 14,700      
Initial Cost Land 1,590      
Initial Cost Building &Improvements 14,314      
Gross Amounts of Which Carried at End of Year Land 1,590      
Gross Amounts of Which Carried at End of Year Building & Improvements 14,314      
Gross Amounts of Which Carried at End of Year Total 15,904      
Accumulated Depreciation $ 267      
Date of Construction 2015      
Date Acquired 12/15      
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] | Dakota Arms, Lubbock [Member] | TEXAS        
Encumbrances $ 12,356      
Initial Cost Land 921      
Initial Cost Building &Improvements 12,644      
Cost Capitalized Subsequent to Acquisition Improvements 358      
Gross Amounts of Which Carried at End of Year Land 921      
Gross Amounts of Which Carried at End of Year Building & Improvements 13,002      
Gross Amounts of Which Carried at End of Year Total 13,923      
Accumulated Depreciation $ 3,860      
Date of Construction 2004      
Date Acquired 01/04      
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] | David Jordan Phase II, Greenwood [Member] | MONTSERRAT        
Encumbrances $ 563      
Initial Cost Land 51      
Initial Cost Building &Improvements 1,521      
Cost Capitalized Subsequent to Acquisition Improvements 295      
Gross Amounts of Which Carried at End of Year Land 51      
Gross Amounts of Which Carried at End of Year Building & Improvements 1,816      
Gross Amounts of Which Carried at End of Year Total 1,867      
Accumulated Depreciation $ 461      
Date of Construction 1999      
Date Acquired 01/06      
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] | David Jordan Phase III, Greenwood [Member] | MONTSERRAT        
Encumbrances $ 573      
Initial Cost Land 83      
Initial Cost Building &Improvements 2,115      
Cost Capitalized Subsequent to Acquisition Improvements 420      
Gross Amounts of Which Carried at End of Year Land 83      
Gross Amounts of Which Carried at End of Year Building & Improvements 2,535      
Gross Amounts of Which Carried at End of Year Total 2,618      
Accumulated Depreciation $ 590      
Date of Construction 2003      
Date Acquired 01/06      
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] | Desoto Ranch, DeSoto [Member] | TEXAS        
Encumbrances $ 15,119      
Initial Cost Land 1,472      
Initial Cost Building &Improvements 17,856      
Cost Capitalized Subsequent to Acquisition Improvements (1,131)      
Gross Amounts of Which Carried at End of Year Land 1,472      
Gross Amounts of Which Carried at End of Year Building & Improvements 16,725      
Gross Amounts of Which Carried at End of Year Total 18,197      
Accumulated Depreciation $ 5,403      
Date of Construction 2002      
Date Acquired 05/02      
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] | Falcon Lakeslington [Member] | TEXAS        
Encumbrances $ 13,530      
Initial Cost Land 1,438      
Initial Cost Building &Improvements 15,094      
Cost Capitalized Subsequent to Acquisition Improvements (725)      
Gross Amounts of Which Carried at End of Year Land 1,438      
Gross Amounts of Which Carried at End of Year Building & Improvements 14,369      
Gross Amounts of Which Carried at End of Year Total 15,806      
Accumulated Depreciation $ 5,203      
Date of Construction 2001      
Date Acquired 10/01      
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] | Heather Creek, Mesquite [Member] | TEXAS        
Encumbrances $ 11,162      
Initial Cost Land 1,326      
Initial Cost Building &Improvements 12,015      
Cost Capitalized Subsequent to Acquisition Improvements 69      
Gross Amounts of Which Carried at End of Year Land 1,326      
Gross Amounts of Which Carried at End of Year Building & Improvements 12,083      
Gross Amounts of Which Carried at End of Year Total 13,410      
Accumulated Depreciation $ 3,626      
Date of Construction 2003      
Date Acquired 03/03      
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] | Holland Lake, Weatherford [Member] | TEXAS        
Encumbrances $ 11,669      
Initial Cost Land 1,449      
Initial Cost Building &Improvements 14,612      
Gross Amounts of Which Carried at End of Year Land 1,449      
Gross Amounts of Which Carried at End of Year Building & Improvements 14,612      
Gross Amounts of Which Carried at End of Year Total 16,061      
Accumulated Depreciation $ 609      
Date of Construction 2004      
Date Acquired 05/14      
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] | Lake Forest, Houston [Member] | TEXAS        
Encumbrances $ 12,007      
Initial Cost Land 335      
Initial Cost Building &Improvements 12,267      
Cost Capitalized Subsequent to Acquisition Improvements 1,615      
Gross Amounts of Which Carried at End of Year Land 335      
Gross Amounts of Which Carried at End of Year Building & Improvements 13,883      
Gross Amounts of Which Carried at End of Year Total 14,218      
Accumulated Depreciation $ 3,919      
Date of Construction 2004      
Date Acquired 01/04      
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 $ 14,757      
Initial Cost Land 2,005      
Initial Cost Building &Improvements 17,892      
Gross Amounts of Which Carried at End of Year Land 2,005      
Gross Amounts of Which Carried at End of Year Building & Improvements 17,892      
Gross Amounts of Which Carried at End of Year Total 19,897      
Accumulated Depreciation $ 932      
Date of Construction 2006      
Date Acquired 12/14      
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] | Lodge at Pecan Creek, Denton [Member] | TEXAS        
Encumbrances $ 16,174      
Initial Cost Land 1,349      
Initial Cost Building &Improvements 16,180      
Gross Amounts of Which Carried at End of Year Land 1,349      
Gross Amounts of Which Carried at End of Year Building & Improvements 16,180      
Gross Amounts of Which Carried at End of Year Total 17,529      
Accumulated Depreciation $ 2,090      
Date of Construction 2011      
Date Acquired 10/05      
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] | Mansions of Mansfield, Mansfield [Member] | TEXAS        
Encumbrances $ 15,347      
Initial Cost Land 977      
Initial Cost Building &Improvements 17,799      
Cost Capitalized Subsequent to Acquisition Improvements 76      
Gross Amounts of Which Carried at End of Year Land 977      
Gross Amounts of Which Carried at End of Year Building & Improvements 17,875      
Gross Amounts of Which Carried at End of Year Total 18,851      
Accumulated Depreciation $ 3,465      
Date of Construction 2009      
Date Acquired 09/05      
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] | Mission Oaks, San Antonio [Member] | TEXAS        
Encumbrances $ 14,670      
Initial Cost Land 1,266      
Initial Cost Building &Improvements 16,627      
Cost Capitalized Subsequent to Acquisition Improvements 212      
Gross Amounts of Which Carried at End of Year Land 1,266      
Gross Amounts of Which Carried at End of Year Building & Improvements 16,839      
Gross Amounts of Which Carried at End of Year Total 18,105      
Accumulated Depreciation $ 4,077      
Date of Construction 2005      
Date Acquired 05/05      
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] | Monticello Estate, Monticello [Member] | ARGENTINA        
Encumbrances $ 445      
Initial Cost Land 36      
Initial Cost Building &Improvements 1,493      
Cost Capitalized Subsequent to Acquisition Improvements 264      
Gross Amounts of Which Carried at End of Year Land 36      
Gross Amounts of Which Carried at End of Year Building & Improvements 1,757      
Gross Amounts of Which Carried at End of Year Total 1,793      
Accumulated Depreciation $ 422      
Date of Construction 2001      
Date Acquired 01/06      
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] | Northside on Travis, Sherman [Member] | TEXAS        
Encumbrances $ 13,099      
Initial Cost Land 1,301      
Initial Cost Building &Improvements 14,560      
Cost Capitalized Subsequent to Acquisition Improvements 26      
Gross Amounts of Which Carried at End of Year Land 1,301      
Gross Amounts of Which Carried at End of Year Building & Improvements 14,586      
Gross Amounts of Which Carried at End of Year Total 15,887      
Accumulated Depreciation $ 2,671      
Date of Construction 2009      
Date Acquired 10/07      
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] | Oak Hollow, Sequin [Member] | TEXAS        
Encumbrances $ 11,832      
Initial Cost Land 1,435      
Initial Cost Building &Improvements 12,405      
Gross Amounts of Which Carried at End of Year Land 1,435      
Gross Amounts of Which Carried at End of Year Building & Improvements 12,405      
Gross Amounts of Which Carried at End of Year Total 13,840      
Accumulated Depreciation $ 465      
Date of Construction 2011      
Date Acquired 07/14      
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] | Overlook at Allensville, Sevierville [Member] | TUNISIA        
Encumbrances $ 11,374      
Initial Cost Land 1,228      
Initial Cost Building &Improvements 12,297      
Gross Amounts of Which Carried at End of Year Land 1,228      
Gross Amounts of Which Carried at End of Year Building & Improvements 12,297      
Gross Amounts of Which Carried at End of Year Total 13,524      
Accumulated Depreciation $ 567      
Date of Construction 2012      
Date Acquired 10/15      
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] | Parc at Clarksville, Clarksville [Member] | TUNISIA        
Encumbrances $ 12,658      
Initial Cost Land 571      
Initial Cost Building &Improvements 14,300      
Cost Capitalized Subsequent to Acquisition Improvements 118      
Gross Amounts of Which Carried at End of Year Land 571      
Gross Amounts of Which Carried at End of Year Building & Improvements 14,418      
Gross Amounts of Which Carried at End of Year Total 14,990      
Accumulated Depreciation $ 3,022      
Date of Construction 2007      
Date Acquired 06/02      
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] | Parc at Denham Springs, Denham Springs [Member] | LOUISIANA        
Encumbrances $ 18,520      
Initial Cost Land 1,022      
Initial Cost Building &Improvements 20,188      
Cost Capitalized Subsequent to Acquisition Improvements 8      
Gross Amounts of Which Carried at End of Year Land 1,022      
Gross Amounts of Which Carried at End of Year Building & Improvements 20,195      
Gross Amounts of Which Carried at End of Year Total 21,218      
Accumulated Depreciation $ 3,012      
Date of Construction 2011      
Date Acquired 07/07      
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] | Parc at Maumelle, Little Rock [Member] | ARGENTINA        
Encumbrances $ 15,694      
Initial Cost Land 1,153      
Initial Cost Building &Improvements 17,688      
Cost Capitalized Subsequent to Acquisition Improvements 671      
Gross Amounts of Which Carried at End of Year Land 1,153      
Gross Amounts of Which Carried at End of Year Building & Improvements 18,359      
Gross Amounts of Which Carried at End of Year Total 19,512      
Accumulated Depreciation $ 4,759      
Date of Construction 2006      
Date Acquired 12/04      
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] | Parc at Metro Center, Nashville [Member] | TUNISIA        
Encumbrances $ 10,316      
Initial Cost Land 960      
Initial Cost Building &Improvements 12,226      
Cost Capitalized Subsequent to Acquisition Improvements 543      
Gross Amounts of Which Carried at End of Year Land 960      
Gross Amounts of Which Carried at End of Year Building & Improvements 12,769      
Gross Amounts of Which Carried at End of Year Total 13,729      
Accumulated Depreciation $ 3,359      
Date of Construction 2006      
Date Acquired 05/05      
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] | Parc at Rogers, Rogers [Member] | ARGENTINA        
Encumbrances $ 20,382      
Initial Cost Land 1,482      
Initial Cost Building &Improvements 22,993      
Cost Capitalized Subsequent to Acquisition Improvements 449      
Asset Impairment (3,180)      
Gross Amounts of Which Carried at End of Year Land 1,482      
Gross Amounts of Which Carried at End of Year Building & Improvements 23,442      
Gross Amounts of Which Carried at End of Year Total 21,745      
Accumulated Depreciation $ 4,321      
Date of Construction 2007      
Date Acquired 04/04      
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] | Preserve at Pecan Creek, Denton [Member] | TEXAS        
Encumbrances $ 14,251      
Initial Cost Land 885      
Initial Cost Building &Improvements 16,626      
Cost Capitalized Subsequent to Acquisition Improvements 59      
Gross Amounts of Which Carried at End of Year Land 885      
Gross Amounts of Which Carried at End of Year Building & Improvements 16,685      
Gross Amounts of Which Carried at End of Year Total 17,570      
Accumulated Depreciation $ 3,473      
Date of Construction 2008      
Date Acquired 10/05      
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] | Preserve at Prairie Pointe, Lubbock [Member] | TEXAS        
Encumbrances $ 10,057      
Initial Cost Land 1,074      
Initial Cost Building &Improvements 10,603      
Cost Capitalized Subsequent to Acquisition Improvements 178      
Gross Amounts of Which Carried at End of Year Land 1,074      
Gross Amounts of Which Carried at End of Year Building & Improvements 10,782      
Gross Amounts of Which Carried at End of Year Total 11,856      
Accumulated Depreciation $ 462      
Date of Construction 2005      
Date Acquired 04/15      
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] | Riverwalk Phase I, Greenville [Member] | MONTSERRAT        
Encumbrances $ 282      
Initial Cost Land 23      
Initial Cost Building &Improvements 1,537      
Cost Capitalized Subsequent to Acquisition Improvements 180      
Gross Amounts of Which Carried at End of Year Land 23      
Gross Amounts of Which Carried at End of Year Building & Improvements 1,718      
Gross Amounts of Which Carried at End of Year Total 1,741      
Accumulated Depreciation $ 464      
Date of Construction 2003      
Date Acquired 01/06      
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] | Riverwalk Phase II, Greenville [Member] | MONTSERRAT        
Encumbrances $ 1,089      
Initial Cost Land 52      
Initial Cost Building &Improvements 4,007      
Cost Capitalized Subsequent to Acquisition Improvements 408      
Gross Amounts of Which Carried at End of Year Land 52      
Gross Amounts of Which Carried at End of Year Building & Improvements 4,415      
Gross Amounts of Which Carried at End of Year Total 4,467      
Accumulated Depreciation $ 1,467      
Date of Construction 2003      
Date Acquired 01/06      
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] | Sonoma Court, Rockwall [Member] | TEXAS        
Encumbrances $ 10,616      
Initial Cost Land 941      
Initial Cost Building &Improvements 11,074      
Gross Amounts of Which Carried at End of Year Land 941      
Gross Amounts of Which Carried at End of Year Building & Improvements 11,074      
Gross Amounts of Which Carried at End of Year Total 12,014      
Accumulated Depreciation $ 1,500      
Date of Construction 2011      
Date Acquired 07/10      
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] | Sugar Mill, Baton Rouge [Member] | LOUISIANA        
Encumbrances $ 11,216      
Initial Cost Land 1,437      
Initial Cost Building &Improvements 13,367      
Cost Capitalized Subsequent to Acquisition Improvements 205      
Gross Amounts of Which Carried at End of Year Land 1,437      
Gross Amounts of Which Carried at End of Year Building & Improvements 13,572      
Gross Amounts of Which Carried at End of Year Total 15,009      
Accumulated Depreciation $ 2,500      
Date of Construction 2009      
Date Acquired 08/08      
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 $ 20,356      
Initial Cost Land 1,621      
Initial Cost Building &Improvements 20,107      
Cost Capitalized Subsequent to Acquisition Improvements 372      
Gross Amounts of Which Carried at End of Year Land 1,621      
Gross Amounts of Which Carried at End of Year Building & Improvements 20,479      
Gross Amounts of Which Carried at End of Year Total 22,099      
Accumulated Depreciation $ 2,765      
Date of Construction 2011      
Date Acquired 09/09      
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] | Tradewinds, Midland [Member] | TEXAS        
Encumbrances $ 14,477      
Initial Cost Land 3,300      
Initial Cost Building &Improvements 20,073      
Cost Capitalized Subsequent to Acquisition Improvements 0      
Gross Amounts of Which Carried at End of Year Land 3,300      
Gross Amounts of Which Carried at End of Year Building & Improvements 20,073      
Gross Amounts of Which Carried at End of Year Total 23,373      
Accumulated Depreciation $ 748      
Date of Construction 2015      
Date Acquired 06/15      
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 $ 733      
Initial Cost Land 141      
Initial Cost Building &Improvements 1,268      
Cost Capitalized Subsequent to Acquisition Improvements 0      
Gross Amounts of Which Carried at End of Year Land 141      
Gross Amounts of Which Carried at End of Year Building & Improvements 1,268      
Gross Amounts of Which Carried at End of Year Total 1,409      
Accumulated Depreciation $ 53      
Date of Construction 1972      
Date Acquired 06/15      
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 Park West I, Pueblo [Member] | COLOMBIA        
Encumbrances $ 10,410      
Initial Cost Land 1,171      
Initial Cost Building &Improvements 10,453      
Gross Amounts of Which Carried at End of Year Land 1,171      
Gross Amounts of Which Carried at End of Year Building & Improvements 10,453      
Gross Amounts of Which Carried at End of Year Total 11,624      
Accumulated Depreciation $ 544      
Date of Construction 2005      
Date Acquired 12/14      
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 Park West II, Pueblo [Member] | COLOMBIA        
Encumbrances $ 9,418      
Initial Cost Land 1,463      
Initial Cost Building &Improvements 13,060      
Gross Amounts of Which Carried at End of Year Land 1,463      
Gross Amounts of Which Carried at End of Year Building & Improvements 13,060      
Gross Amounts of Which Carried at End of Year Total 14,523      
Accumulated Depreciation $ 680      
Date of Construction 2010      
Date Acquired 12/14      
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 $ 10,661      
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 $ 849      
Date of Construction 2009      
Date Acquired 10/15      
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] | Vistas of Vance Jackson, San Antonio [Member] | TEXAS        
Encumbrances $ 15,076      
Initial Cost Land 1,265      
Initial Cost Building &Improvements 16,540      
Cost Capitalized Subsequent to Acquisition Improvements 189      
Gross Amounts of Which Carried at End of Year Land 1,265      
Gross Amounts of Which Carried at End of Year Building & Improvements 16,728      
Gross Amounts of Which Carried at End of Year Total 17,993      
Accumulated Depreciation $ 4,728      
Date of Construction 2004      
Date Acquired 01/04      
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] | Waterford, Roseberg [Member] | TEXAS        
Encumbrances $ 17,167      
Initial Cost Land 2,341      
Initial Cost Building &Improvements 20,880      
Cost Capitalized Subsequent to Acquisition Improvements 0      
Gross Amounts of Which Carried at End of Year Land 2,341      
Gross Amounts of Which Carried at End of Year Building & Improvements 20,880      
Gross Amounts of Which Carried at End of Year Total 23,221      
Accumulated Depreciation $ 783      
Date of Construction 2013      
Date Acquired 06/14      
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 $ 4,167      
Initial Cost Land 692      
Initial Cost Building &Improvements 6,650      
Cost Capitalized Subsequent to Acquisition Improvements 0      
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 $ 263      
Date of Construction 1972      
Date Acquired 06/15      
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] | Windsong, Fort Worth [Member] | TEXAS        
Encumbrances $ 10,599      
Initial Cost Land 790      
Initial Cost Building &Improvements 11,526      
Cost Capitalized Subsequent to Acquisition Improvements 69      
Gross Amounts of Which Carried at End of Year Land 790      
Gross Amounts of Which Carried at End of Year Building & Improvements 11,596      
Gross Amounts of Which Carried at End of Year Total 12,386      
Accumulated Depreciation $ 3,724      
Date of Construction 2002      
Date Acquired 07/03      
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] | Metropolitan Apartments [Member]        
Encumbrances $ 24,303      
Initial Cost Land 3,229      
Initial Cost Building &Improvements 29,003      
Cost Capitalized Subsequent to Acquisition Improvements 0      
Gross Amounts of Which Carried at End of Year Land 3,229      
Gross Amounts of Which Carried at End of Year Building & Improvements 29,003      
Gross Amounts of Which Carried at End of Year Total 32,232      
Accumulated Depreciation 363      
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Oceanaire Apartments [Member]        
Encumbrances 13,607      
Initial Cost Land 1,397      
Initial Cost Building &Improvements 12,575      
Gross Amounts of Which Carried at End of Year Land 1,397      
Gross Amounts of Which Carried at End of Year Building & Improvements 12,575      
Gross Amounts of Which Carried at End of Year Total 13,972      
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Sawgrass Creek [Member]        
Encumbrances 0      
Initial Cost Land 784      
Initial Cost Building &Improvements 7,056      
Cost Capitalized Subsequent to Acquisition Improvements 0      
Gross Amounts of Which Carried at End of Year Land 784      
Gross Amounts of Which Carried at End of Year Building & Improvements 7,056      
Gross Amounts of Which Carried at End of Year Total 7,840      
Accumulated Depreciation 73      
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member] | Tattersall Village [Member]        
Encumbrances 26,121      
Initial Cost Land 2,691      
Initial Cost Building &Improvements 23,961      
Cost Capitalized Subsequent to Acquisition Improvements 0      
Gross Amounts of Which Carried at End of Year Land 2,691      
Gross Amounts of Which Carried at End of Year Building & Improvements 23,961      
Gross Amounts of Which Carried at End of Year Total 26,652      
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member]        
Encumbrances 108,348      
Initial Cost Land 24,910      
Initial Cost Building &Improvements 160,031      
Cost Capitalized Subsequent to Acquisition Improvements 48,816      
Asset Impairment (14,900)      
Gross Amounts of Which Carried at End of Year Land 24,910      
Gross Amounts of Which Carried at End of Year Building & Improvements 208,847      
Gross Amounts of Which Carried at End of Year Total 218,857      
Accumulated Depreciation 68,017      
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member] | 600 Las Colinass Colinas [Member] | TEXAS        
Encumbrances 39,237      
Initial Cost Land 5,751      
Initial Cost Building &Improvements 51,759      
Cost Capitalized Subsequent to Acquisition Improvements 16,941      
Gross Amounts of Which Carried at End of Year Land 5,751      
Gross Amounts of Which Carried at End of Year Building & Improvements 68,700      
Gross Amounts of Which Carried at End of Year Total 74,451      
Accumulated Depreciation $ 23,729      
Date of Construction 1984      
Date Acquired 08/05      
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 $ 12,700      
Initial Cost Land 1,763      
Initial Cost Building &Improvements 15,834      
Cost Capitalized Subsequent to Acquisition Improvements 165      
Gross Amounts of Which Carried at End of Year Land 1,763      
Gross Amounts of Which Carried at End of Year Building & Improvements 15,999      
Gross Amounts of Which Carried at End of Year Total 17,762      
Accumulated Depreciation $ 660      
Date of Construction 1970      
Date Acquired 07/15      
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 $ 5,218      
Cost Capitalized Subsequent to Acquisition Improvements 1,008      
Gross Amounts of Which Carried at End of Year Building & Improvements 1,008      
Gross Amounts of Which Carried at End of Year Total 1,008      
Accumulated Depreciation $ 522      
Date of Construction 1979      
Date Acquired 03/03      
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 $ 23,193      
Initial Cost Land 5,096      
Initial Cost Building &Improvements 45,868      
Cost Capitalized Subsequent to Acquisition Improvements 14,355      
Gross Amounts of Which Carried at End of Year Land 5,096      
Gross Amounts of Which Carried at End of Year Building & Improvements 60,223      
Gross Amounts of Which Carried at End of Year Total 65,319      
Accumulated Depreciation $ 21,301      
Date of Construction 1984      
Date Acquired 04/05      
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, Matoon [Member] | ILLINOIS        
Initial Cost Land $ 608      
Initial Cost Building &Improvements 5,677      
Cost Capitalized Subsequent to Acquisition Improvements 8,194      
Gross Amounts of Which Carried at End of Year Land 608      
Gross Amounts of Which Carried at End of Year Building & Improvements 13,871      
Gross Amounts of Which Carried at End of Year Total 14,479      
Accumulated Depreciation $ 12,324      
Date of Construction 1971      
Date Acquired 08/79      
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        
Initial Cost Land $ 7,168      
Initial Cost Building &Improvements 6,031      
Cost Capitalized Subsequent to Acquisition Improvements 141      
Asset Impairment (5,300)      
Gross Amounts of Which Carried at End of Year Land 7,168      
Gross Amounts of Which Carried at End of Year Building & Improvements 6,173      
Gross Amounts of Which Carried at End of Year Total 8,041      
Accumulated Depreciation $ 323      
Date of Construction 1981      
Date Acquired 11/14      
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 $ 23      
Cost Capitalized Subsequent to Acquisition Improvements 77      
Gross Amounts of Which Carried at End of Year Land 23      
Gross Amounts of Which Carried at End of Year Building & Improvements 77      
Gross Amounts of Which Carried at End of Year Total 100      
Accumulated Depreciation $ 46      
Date Acquired 05/92      
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 765      
Accumulated Depreciation $ 134      
Date Acquired 08/05      
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 $ 28,000      
Initial Cost Land 3,878      
Initial Cost Building &Improvements 34,862      
Cost Capitalized Subsequent to Acquisition Improvements 7,793      
Asset Impairment (9,600)      
Gross Amounts of Which Carried at End of Year Land 3,878      
Gross Amounts of Which Carried at End of Year Building & Improvements 42,655      
Gross Amounts of Which Carried at End of Year Total 36,933      
Accumulated Depreciation $ 8,980      
Date Acquired 06/08      
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 $ 13,005      
Initial Cost Land 7,866      
Cost Capitalized Subsequent to Acquisition Improvements 17,421      
Gross Amounts of Which Carried at End of Year Land 7,866      
Gross Amounts of Which Carried at End of Year Building & Improvements 17,421      
Gross Amounts of Which Carried at End of Year Total 25,288      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Lakeside Lofts, Farmers Branch [Member] | TEXAS        
Encumbrances 0      
Initial Cost Land 0      
Cost Capitalized Subsequent to Acquisition Improvements 1,744      
Gross Amounts of Which Carried at End of Year Building & Improvements 1,744      
Gross Amounts of Which Carried at End of Year Total $ 1,744      
Date Acquired 12/14      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Terra Lago, Rowlett [Member] | TEXAS        
Encumbrances $ 13,005      
Initial Cost Land 6,023      
Cost Capitalized Subsequent to Acquisition Improvements 15,406      
Gross Amounts of Which Carried at End of Year Land 6,023      
Gross Amounts of Which Carried at End of Year Building & Improvements 15,406      
Gross Amounts of Which Carried at End of Year Total $ 21,429      
Date Acquired 11/15      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Overlook at Allensville Square II, Seigerville [Member] | TUNISIA        
Encumbrances $ 0      
Initial Cost Land 1,843      
Cost Capitalized Subsequent to Acquisition Improvements 271      
Gross Amounts of Which Carried at End of Year Land 1,843      
Gross Amounts of Which Carried at End of Year Building & Improvements 271      
Gross Amounts of Which Carried at End of Year Total $ 2,114      
Date Acquired 11/15      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member]        
Encumbrances $ 42,698      
Initial Cost Land 86,363      
Initial Cost Building &Improvements 1,869      
Cost Capitalized Subsequent to Acquisition Improvements 13,876      
Asset Impairment (21,909)      
Gross Amounts of Which Carried at End of Year Land 79,188      
Gross Amounts of Which Carried at End of Year Total 79,188      
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 07/12      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Audubon, Adams County [Member] | MONTSERRAT        
Initial Cost Land $ 519      
Initial Cost Building &Improvements 297      
Cost Capitalized Subsequent to Acquisition Improvements 297      
Gross Amounts of Which Carried at End of Year Land 815      
Gross Amounts of Which Carried at End of Year Total $ 815      
Date Acquired 03/07      
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 12/14      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Cooks Lane, Fort Worth [Member] | TEXAS        
Encumbrances $ 394      
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 06/04      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Dedeaux, Gulfport [Member] | MONTSERRAT        
Initial Cost Land $ 1,612      
Initial Cost Building &Improvements 46      
Cost Capitalized Subsequent to Acquisition Improvements 46      
Asset Impairment (38)      
Gross Amounts of Which Carried at End of Year Land 1,620      
Gross Amounts of Which Carried at End of Year Total $ 1,620      
Date Acquired 10/06      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Denham Springs, Denham Springs [Member] | LOUISIANA        
Encumbrances $ 153      
Initial Cost Land 714      
Gross Amounts of Which Carried at End of Year Land 714      
Gross Amounts of Which Carried at End of Year Total $ 714      
Date Acquired 08/08      
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 07/98      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | GNB Land, Farmers Branch [Member] | TEXAS        
Encumbrances $ 8,695      
Initial Cost Land 4,385      
Initial Cost Building &Improvements 32      
Cost Capitalized Subsequent to Acquisition Improvements 32      
Gross Amounts of Which Carried at End of Year Land 4,418      
Gross Amounts of Which Carried at End of Year Total $ 4,418      
Date Acquired 07/06      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Hollywood Casino Land Tract II, Farmers Branch [Member] | TEXAS        
Encumbrances $ 1,410      
Initial Cost Land 3,192      
Initial Cost Building &Improvements 620      
Cost Capitalized Subsequent to Acquisition Improvements 674      
Gross Amounts of Which Carried at End of Year Land 4,486      
Gross Amounts of Which Carried at End of Year Total $ 4,486      
Date Acquired 03/08      
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 408      
Gross Amounts of Which Carried at End of Year Total $ 408      
Date Acquired 06/04      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Lake Shore Villas, Humble [Member] | TEXAS        
Initial Cost Land $ 81      
Initial Cost Building &Improvements 3      
Cost Capitalized Subsequent to Acquisition Improvements 3      
Gross Amounts of Which Carried at End of Year Land 84      
Gross Amounts of Which Carried at End of Year Total $ 84      
Date Acquired 03/02      
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 01/04      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Luna Ventures, Farmers Branch [Member] | TEXAS        
Initial Cost Land $ 2,934      
Gross Amounts of Which Carried at End of Year Land 2,934      
Gross Amounts of Which Carried at End of Year Total $ 2,934      
Date Acquired 04/08      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Mandahl Bay Land [Member]        
Initial Cost Land $ 667      
Gross Amounts of Which Carried at End of Year Land 667      
Gross Amounts of Which Carried at End of Year Total $ 667      
Date Acquired 01/05      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Manhattan Land, Farmers Branch [Member] | TEXAS        
Cost Capitalized Subsequent to Acquisition Improvements $ (344)      
Gross Amounts of Which Carried at End of Year Land (344)      
Gross Amounts of Which Carried at End of Year Total $ (344)      
Date Acquired 02/00      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | McKinney 36, Collin County [Member] | TEXAS        
Encumbrances $ 1,415      
Initial Cost Land 647      
Initial Cost Building &Improvements 164      
Cost Capitalized Subsequent to Acquisition Improvements (198)      
Gross Amounts of Which Carried at End of Year Land 613      
Gross Amounts of Which Carried at End of Year Total $ 613      
Date Acquired 01/98      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Meloy/Portage Land, Kent OH [Member]        
Encumbrances $ 1,160      
Initial Cost Land 5,119      
Asset Impairment (1,069)      
Gross Amounts of Which Carried at End of Year Land 4,050      
Gross Amounts of Which Carried at End of Year Total $ 4,050      
Date Acquired 02/04      
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 04/13      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Mira Lago, Farmers Branch [Member] | TEXAS        
Initial Cost Land $ 59      
Initial Cost Building &Improvements 15      
Cost Capitalized Subsequent to Acquisition Improvements (7)      
Gross Amounts of Which Carried at End of Year Land 67      
Gross Amounts of Which Carried at End of Year Total $ 67      
Date Acquired 05/01      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Nakash, Malden [Member] | MACAU        
Initial Cost Land $ 113      
Cost Capitalized Subsequent to Acquisition Improvements (10)      
Gross Amounts of Which Carried at End of Year Land 103      
Gross Amounts of Which Carried at End of Year Total $ 103      
Date Acquired 01/93      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Nashville, Nashville [Member] | TUNISIA        
Initial Cost Land $ 662      
Initial Cost Building &Improvements 59      
Cost Capitalized Subsequent to Acquisition Improvements (384)      
Gross Amounts of Which Carried at End of Year Land 338      
Gross Amounts of Which Carried at End of Year Total $ 338      
Date Acquired 06/02      
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 66      
Gross Amounts of Which Carried at End of Year Total $ 66      
Date Acquired 10/98      
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 29      
Gross Amounts of Which Carried at End of Year Total $ 29      
Date Acquired 10/98      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Ocean Estates, Gulfport [Member] | MONTSERRAT        
Initial Cost Land $ 1,418      
Initial Cost Building &Improvements 390      
Cost Capitalized Subsequent to Acquisition Improvements 390      
Gross Amounts of Which Carried at End of Year Land 1,808      
Gross Amounts of Which Carried at End of Year Total $ 1,808      
Date Acquired 10/07      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Senlac Land Tract II, Farmers Branch [Member] | TEXAS        
Initial Cost Land $ 656      
Gross Amounts of Which Carried at End of Year Land 656      
Gross Amounts of Which Carried at End of Year Total $ 656      
Date Acquired 08/05      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Sugar Mill Land, Baton Rouge [Member] | LOUISIANA        
Encumbrances $ 116      
Initial Cost Land 445      
Initial Cost Building &Improvements 242      
Cost Capitalized Subsequent to Acquisition Improvements 242      
Gross Amounts of Which Carried at End of Year Land 687      
Gross Amounts of Which Carried at End of Year Total $ 687      
Date Acquired 08/13      
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 1,500      
Gross Amounts of Which Carried at End of Year Total $ 1,500      
Date Acquired 12/06      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Travis Ranch Land, Kaufman County [Member] | TEXAS        
Encumbrances $ 757      
Initial Cost Land 1,030      
Gross Amounts of Which Carried at End of Year Land 1,030      
Gross Amounts of Which Carried at End of Year Total $ 1,030      
Date Acquired 08/08      
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 08/08      
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 03/04      
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 228      
Gross Amounts of Which Carried at End of Year Total $ 228      
Date Acquired 08/08      
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 01/95      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Windmill Farms Land, Kaufman County [Member] | TEXAS        
Encumbrances $ 25,332      
Initial Cost Land 49,371      
Cost Capitalized Subsequent to Acquisition Improvements 15,009      
Asset Impairment (20,564)      
Gross Amounts of Which Carried at End of Year Land 43,817      
Gross Amounts of Which Carried at End of Year Total $ 43,817      
Date Acquired 11/11      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Dominion Mercer [Member]        
Encumbrances $ 3,572      
Initial Cost Land 3,688      
Gross Amounts of Which Carried at End of Year Land 3,688      
Gross Amounts of Which Carried at End of Year Total $ 3,688      
Properties Held for Investment/Corporate Debt [Member] | Corporate Departments/Investments/Misc [Member]        
Encumbrances   167,718    
Properties Held for Investment/Corporate Debt [Member] | Corporate Departments/Investments/Misc [Member] | TCI - Corporate [Member]        
Encumbrances   162,232    
Properties Held for Investment/Corporate Debt [Member] | Corporate Departments/Investments/Misc [Member] | ARI - Corporate [Member]        
Encumbrances   5,486    
Properties Held for Sale [Member]        
Encumbrances   376    
Properties Held for Sale [Member] | Commercial Held for Sale [Member]        
Encumbrances   376    
Properties Held for Sale [Member] | Commercial Held for Sale [Member] | Dunes Plaza, Michigan City [Member] | INDIANA        
Encumbrances   $ 376    
Date of Construction   1978    
Date Acquired   03/92    
Life on Which Depreciation In Latest Statement of Operation is Computed   40 years    
Properties Subject to Sales Contract [Member]        
Encumbrances   $ 5,142    
Initial Cost Land   65,355    
Initial Cost Building &Improvements   147    
Cost Capitalized Subsequent to Acquisition Improvements   (11,714)    
Asset Impairment   (4,868)    
Gross Amounts of Which Carried at End of Year Land   48,919    
Gross Amounts of Which Carried at End of Year Total   48,919    
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member]        
Encumbrances   5,142    
Initial Cost Land   65,355    
Initial Cost Building &Improvements   147    
Cost Capitalized Subsequent to Acquisition Improvements   (11,714)    
Asset Impairment   (4,868)    
Gross Amounts of Which Carried at End of Year Land   48,919    
Gross Amounts of Which Carried at End of Year Total   48,919    
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Dominion Tract, Dallas [Member] | TEXAS        
Encumbrances   3,360    
Initial Cost Land   3,931    
Cost Capitalized Subsequent to Acquisition Improvements   (304)    
Asset Impairment   (1,624)    
Gross Amounts of Which Carried at End of Year Land   2,003    
Gross Amounts of Which Carried at End of Year Total   $ 2,003    
Date Acquired   03/99    
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Hollywood Casino Tract I, Farmers Branch [Member] | TEXAS        
Encumbrances   $ 1,410    
Initial Cost Land   3,350    
Initial Cost Building &Improvements   147    
Cost Capitalized Subsequent to Acquisition Improvements   (1,013)    
Asset Impairment   (176)    
Gross Amounts of Which Carried at End of Year Land   2,308    
Gross Amounts of Which Carried at End of Year Total   $ 2,308    
Date Acquired   03/08    
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | LaDue Land, Farmers Branch [Member] | TEXAS        
Initial Cost Land   $ 1,900    
Asset Impairment   (55)    
Gross Amounts of Which Carried at End of Year Land   1,845    
Gross Amounts of Which Carried at End of Year Total   $ 1,845    
Date Acquired   07/98    
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Three Hickory Land, Farmers Branch [Member] | TEXAS        
Initial Cost Land   $ 1,202    
Gross Amounts of Which Carried at End of Year Land   1,202    
Gross Amounts of Which Carried at End of Year Total   $ 1,202    
Date Acquired   03/14    
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Travelers Land, Farmers Branch [Member] | TEXAS        
Initial Cost Land   $ 21,511    
Cost Capitalized Subsequent to Acquisition Improvements   4    
Gross Amounts of Which Carried at End of Year Land   21,515    
Gross Amounts of Which Carried at End of Year Total   $ 21,515    
Date Acquired   11/06    
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Travelers Land, Farmers Branch [Member] | TEXAS        
Initial Cost Land   $ 6,891    
Cost Capitalized Subsequent to Acquisition Improvements   (4,978)    
Gross Amounts of Which Carried at End of Year Land   1,913    
Gross Amounts of Which Carried at End of Year Total   $ 1,913    
Date Acquired   11/06    
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Valwood Land, Farmers Branch [Member] | TEXAS        
Initial Cost Land   $ 3,332    
Gross Amounts of Which Carried at End of Year Land   3,332    
Gross Amounts of Which Carried at End of Year Total   $ 3,332    
Date Acquired   03/14    
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Walker Land, Dallas County [Member] | TEXAS        
Initial Cost Land   $ 19,728    
Cost Capitalized Subsequent to Acquisition Improvements   (5,992)    
Asset Impairment   (562)    
Gross Amounts of Which Carried at End of Year Land   13,174    
Gross Amounts of Which Carried at End of Year Total   $ 13,174    
Date Acquired   09/06    
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Whorton Land Bentonville [Member] | ARGENTINA        
Encumbrances   $ 372    
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   1,627    
Gross Amounts of Which Carried at End of Year Total   $ 1,627    
Date Acquired   06/05    
Land Sold [Member]        
Encumbrances   $ 890,796    
Initial Cost Land   241,890    
Initial Cost Building &Improvements   796,374    
Cost Capitalized Subsequent to Acquisition Improvements   74,205    
Asset Impairment   (44,857)    
Gross Amounts of Which Carried at End of Year Land   218,280    
Gross Amounts of Which Carried at End of Year Building & Improvements   866,403    
Gross Amounts of Which Carried at End of Year Total   1,066,603    
Accumulated Depreciation   $ 165,597