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SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Gross Amounts of Which Carried at End of Year Total $ 1,165,662 $ 1,066,603 $ 1,003,545 $ 831,540
Accumulated Depreciation 177,546 $ 165,597 $ 150,038 $ 131,777
Properties Held for Investment/Corporate Debt [Member]        
Encumbrances 909,195      
Initial Cost Land 188,561      
Initial Cost Building &Improvements 832,441      
Cost Capitalized Subsequent to Acquisition Improvements 147,834      
Asset Impairment (51,409)      
Gross Amounts of Which Carried at End of Year Land 188,905      
Gross Amounts of Which Carried at End of Year Building &Improvements 928,866      
Gross Amounts of Which Carried at End of Year Total 1,117,427      
Accumulated Depreciation 177,546      
Properties Held for Investment/Corporate Debt [Member] | Properties Held for Investment Apartments [Member]        
Encumbrances 566,577      
Initial Cost Land 60,740      
Initial Cost Building &Improvements 672,014      
Cost Capitalized Subsequent to Acquisition Improvements 4,047      
Asset Impairment (3,180)      
Gross Amounts of Which Carried at End of Year Land 60,740      
Gross Amounts of Which Carried at End of Year Building &Improvements 672,881      
Gross Amounts of Which Carried at End of Year Total 733,621      
Accumulated Depreciation 113,896      
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 3,374      
Accumulated Depreciation $ 799      
Date of Construction 2003      
Date Acquired 6-Jan      
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 $ 10,448      
Initial Cost Land 438      
Initial Cost Building &Improvements 10,525      
Cost Capitalized Subsequent to Acquisition Improvements 19      
Gross Amounts of Which Carried at End of Year Land 438      
Gross Amounts of Which Carried at End of Year Building &Improvements 10,271      
Gross Amounts of Which Carried at End of Year Total 10,709      
Accumulated Depreciation $ 3,801      
Date of Construction 2003      
Date Acquired 2-Jan      
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 $ 3,769      
Initial Cost Land 287      
Initial Cost Building &Improvements 4,496      
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 $ 1,139      
Date of Construction 2004      
Date Acquired 4-Jan      
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 $ 9,112      
Initial Cost Land 740      
Initial Cost Building &Improvements 10,498      
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 $ 3,390      
Date of Construction 2004      
Date Acquired 3-May      
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 $ 6,233      
Initial Cost Land 762      
Initial Cost Building &Improvements 6,913      
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 $ 1,730      
Date of Construction 2007      
Date Acquired 8-Apr      
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 $ 8,740      
Initial Cost Land 1,860      
Initial Cost Building &Improvements 8,002      
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 $ 2,713      
Date of Construction 2003      
Date Acquired 3-Mar      
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 $ 20,518      
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 $ 1,365      
Date of Construction 2011      
Date Acquired 14-July      
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, AL [Member] | ALBANIA        
Encumbrances $ 1,399      
Initial Cost Land 1,606      
Initial Cost Building &Improvements 14,451      
Gross Amounts of Which Carried at End of Year Land 1,606      
Gross Amounts of Which Carried at End of Year Building &Improvements 14,451      
Gross Amounts of Which Carried at End of Year Total 16,057      
Accumulated Depreciation $ 628      
Date of Construction 2015      
Date Acquired 15-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] | Curtis Moore Estates, Greenwood [Member] | MONTSERRAT        
Encumbrances $ 14,498      
Initial Cost Land 186      
Initial Cost Building &Improvements 5,796      
Cost Capitalized Subsequent to Acquisition Improvements 702      
Gross Amounts of Which Carried at End of Year Land 186      
Gross Amounts of Which Carried at End of Year Building &Improvements 6,678      
Gross Amounts of Which Carried at End of Year Total 6,864      
Accumulated Depreciation $ 1,939      
Date of Construction 2003      
Date Acquired 6-Jan      
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 $ 12,194      
Initial Cost Land 921      
Initial Cost Building &Improvements 12,834      
Cost Capitalized Subsequent to Acquisition Improvements 168      
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 $ 4,195      
Date of Construction 2004      
Date Acquired 4-Jan      
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 $ 551      
Initial Cost Land 51      
Initial Cost Building &Improvements 1,591      
Cost Capitalized Subsequent to Acquisition Improvements 225      
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 $ 506      
Date of Construction 1999      
Date Acquired 6-Jan      
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 $ 556      
Initial Cost Land 83      
Initial Cost Building &Improvements 2,179      
Cost Capitalized Subsequent to Acquisition Improvements 356      
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 $ 649      
Date of Construction 2003      
Date Acquired 6-Jan      
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 $ 14,877      
Initial Cost Land 1,349      
Initial Cost Building &Improvements 16,838      
Cost Capitalized Subsequent to Acquisition Improvements 11      
Gross Amounts of Which Carried at End of Year Land 1,349      
Gross Amounts of Which Carried at End of Year Building &Improvements 16,849      
Gross Amounts of Which Carried at End of Year Total 18,198      
Accumulated Depreciation $ 5,843      
Date of Construction 2002      
Date Acquired 2-May      
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 $ 13,352      
Initial Cost Land 1,318      
Initial Cost Building &Improvements 14,461      
Cost Capitalized Subsequent to Acquisition Improvements 27      
Gross Amounts of Which Carried at End of Year Land 1,318      
Gross Amounts of Which Carried at End of Year Building &Improvements 14,488      
Gross Amounts of Which Carried at End of Year Total 15,806      
Accumulated Depreciation $ 5,570      
Date of Construction 2001      
Date Acquired 1-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] | Heather Creek, Mesquite [Member] | TEXAS        
Encumbrances $ 10,976      
Initial Cost Land 1,326      
Initial Cost Building &Improvements 12,157      
Cost Capitalized Subsequent to Acquisition Improvements 18      
Gross Amounts of Which Carried at End of Year Land 1,326      
Gross Amounts of Which Carried at End of Year Building &Improvements 12,157      
Gross Amounts of Which Carried at End of Year Total 13,501      
Accumulated Depreciation $ 3,934      
Date of Construction 2003      
Date Acquired 3-Mar      
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 $ 11,510      
Initial Cost Land 1,450      
Initial Cost Building &Improvements 14,955      
Gross Amounts of Which Carried at End of Year Land 1,450      
Gross Amounts of Which Carried at End of Year Building &Improvements 14,955      
Gross Amounts of Which Carried at End of Year Total 16,405      
Accumulated Depreciation $ 976      
Date of Construction 2004      
Date Acquired 14-May      
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 $ 11,808      
Initial Cost Land 335      
Initial Cost Building &Improvements 14,221      
Gross Amounts of Which Carried at End of Year Land 335      
Gross Amounts of Which Carried at End of Year Building &Improvements 14,221      
Gross Amounts of Which Carried at End of Year Total 14,556      
Accumulated Depreciation $ 4,282      
Date of Construction 2004      
Date Acquired 4-Jan      
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 $ 14,495      
Initial Cost Land 2,005      
Initial Cost Building &Improvements 18,109      
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 $ 1,384      
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] | Lofts at Reynolds Village, Asheville, NC [Member] | NORTH CAROLINA        
Encumbrances $ 28,230      
Initial Cost Land 3,704      
Initial Cost Building &Improvements 33,340      
Gross Amounts of Which Carried at End of Year Land 3,704      
Gross Amounts of Which Carried at End of Year Building &Improvements 33,340      
Gross Amounts of Which Carried at End of Year Total 37,044      
Accumulated Depreciation $ 208      
Date of Construction 2012      
Date Acquired 17-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] | Lodge at Pecan Creek, Denton [Member] | TEXAS        
Encumbrances $ 15,959      
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 $ 2,494      
Date of Construction 2011      
Date Acquired 5-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] | Mansions of Mansfield, Mansfield [Member] | TEXAS        
Encumbrances $ 15,084      
Initial Cost Land 977      
Initial Cost Building &Improvements 17,843      
Cost Capitalized Subsequent to Acquisition Improvements 31      
Gross Amounts of Which Carried at End of Year Land 977      
Gross Amounts of Which Carried at End of Year Building &Improvements 17,847      
Gross Amounts of Which Carried at End of Year Total 18,851      
Accumulated Depreciation $ 3,916      
Date of Construction 2009      
Date Acquired 5-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] | Metropolitan Apartments, North Little Rock, AR [Member] | ARGENTINA        
Encumbrances $ 25,233      
Initial Cost Land 3,323      
Initial Cost Building &Improvements 29,857      
Gross Amounts of Which Carried at End of Year Land 3,323      
Gross Amounts of Which Carried at End of Year Building &Improvements 29,857      
Gross Amounts of Which Carried at End of Year Total 33,180      
Accumulated Depreciation $ 1,109      
Date of Construction 2010      
Date Acquired 16-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] | Mission Oaks, San Antonio [Member] | TEXAS        
Encumbrances $ 14,433      
Initial Cost Land 1,266      
Initial Cost Building &Improvements 16,717      
Cost Capitalized Subsequent to Acquisition Improvements 122      
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 $ 4,495      
Date of Construction 2005      
Date Acquired 5-May      
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 $ 431      
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 $ 460      
Date of Construction 2001      
Date Acquired 6-Jan      
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 $ 12,873      
Initial Cost Land 1,300      
Initial Cost Building &Improvements 14,586      
Cost Capitalized Subsequent to Acquisition Improvements 26      
Gross Amounts of Which Carried at End of Year Land 1,300      
Gross Amounts of Which Carried at End of Year Building &Improvements 14,586      
Gross Amounts of Which Carried at End of Year Total 15,886      
Accumulated Depreciation $ 3,038      
Date of Construction 2009      
Date Acquired 7-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] | Oak Hollow, Sequin [Member] | TEXAS        
Encumbrances $ 11,680      
Initial Cost Land 1,435      
Initial Cost Building &Improvements 12,403      
Gross Amounts of Which Carried at End of Year Land 1,435      
Gross Amounts of Which Carried at End of Year Building &Improvements 12,403      
Gross Amounts of Which Carried at End of Year Total 13,838      
Accumulated Depreciation $ 775      
Date of Construction 2011      
Date Acquired 14-July      
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] | Oceanaire Apartments, Biloxi, MS [Member] | MONTSERRAT        
Encumbrances $ 10,791      
Initial Cost Land 1,384      
Initial Cost Building &Improvements 12,575      
Gross Amounts of Which Carried at End of Year Land 1,384      
Gross Amounts of Which Carried at End of Year Building &Improvements 12,575      
Gross Amounts of Which Carried at End of Year Total 13,959      
Accumulated Depreciation $ 318      
Date of Construction 2009      
Date Acquired 16-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] | Overlook at Allensville, Sevierville [Member] | TUNISIA        
Encumbrances $ 12,079      
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 13,525      
Accumulated Depreciation $ 881      
Date of Construction 2012      
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] | Parc at Clarksville, Clarksville [Member] | TUNISIA        
Encumbrances $ 12,441      
Initial Cost Land 571      
Initial Cost Building &Improvements 14,360      
Cost Capitalized Subsequent to Acquisition Improvements 59      
Gross Amounts of Which Carried at End of Year Land 571      
Gross Amounts of Which Carried at End of Year Building &Improvements 14,419      
Gross Amounts of Which Carried at End of Year Total 14,990      
Accumulated Depreciation $ 3,385      
Date of Construction 2007      
Date Acquired 2-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] | Parc at Denham Springs, Denham Springs [Member] | LOUISIANA        
Encumbrances $ 18,249      
Initial Cost Land 1,022      
Initial Cost Building &Improvements 20,188      
Cost Capitalized Subsequent to Acquisition Improvements 100      
Gross Amounts of Which Carried at End of Year Land 1,022      
Gross Amounts of Which Carried at End of Year Building &Improvements 20,288      
Gross Amounts of Which Carried at End of Year Total 21,310      
Accumulated Depreciation $ 3,517      
Date of Construction 2011      
Date Acquired 7-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] | Parc at Maumelle, Little Rock [Member] | ARGENTINA        
Encumbrances $ 15,438      
Initial Cost Land 1,048      
Initial Cost Building &Improvements 18,464      
Gross Amounts of Which Carried at End of Year Land 1,048      
Gross Amounts of Which Carried at End of Year Building &Improvements 18,464      
Gross Amounts of Which Carried at End of Year Total 19,512      
Accumulated Depreciation $ 5,248      
Date of Construction 2006      
Date Acquired 4-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] | Parc at Metro Center, Nashville [Member] | TUNISIA        
Encumbrances $ 10,148      
Initial Cost Land 947      
Initial Cost Building &Improvements 12,601      
Cost Capitalized Subsequent to Acquisition Improvements 182      
Gross Amounts of Which Carried at End of Year Land 947      
Gross Amounts of Which Carried at End of Year Building &Improvements 12,783      
Gross Amounts of Which Carried at End of Year Total 13,730      
Accumulated Depreciation $ 3,672      
Date of Construction 2006      
Date Acquired 5-May      
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 $ 20,004      
Initial Cost Land 1,482      
Initial Cost Building &Improvements 13,176      
Cost Capitalized Subsequent to Acquisition Improvements 266      
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 20,262      
Gross Amounts of Which Carried at End of Year Total 21,744      
Accumulated Depreciation $ 4,836      
Date of Construction 2007      
Date Acquired 4-Apr      
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 $ 14,006      
Initial Cost Land 885      
Initial Cost Building &Improvements 16,668      
Cost Capitalized Subsequent to Acquisition Improvements 17      
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 $ 3,893      
Date of Construction 2008      
Date Acquired 5-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] | Preserve at Prairie Pointe, Lubbock [Member] | TEXAS        
Encumbrances $ 9,928      
Initial Cost Land 1,074      
Initial Cost Building &Improvements 10,782      
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 $ 748      
Date of Construction 2005      
Date Acquired 15-Apr      
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 $ 272      
Initial Cost Land 23      
Initial Cost Building &Improvements 1,543      
Cost Capitalized Subsequent to Acquisition Improvements 175      
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 $ 504      
Date of Construction 2003      
Date Acquired 6-Jan      
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 $ 1,053      
Initial Cost Land 52      
Initial Cost Building &Improvements 4,051      
Cost Capitalized Subsequent to Acquisition Improvements 364      
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 $ 1,572      
Date of Construction 2003      
Date Acquired 6-Jan      
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] | Sawgrass Creek [Member] | FLORIDA        
Initial Cost Land $ 784      
Initial Cost Building &Improvements 7,056      
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 $ 249      
Date of Construction 2008      
Date Acquired 16- Aug      
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 $ 10,456      
Initial Cost Land 941      
Initial Cost Building &Improvements 11,136      
Gross Amounts of Which Carried at End of Year Land 941      
Gross Amounts of Which Carried at End of Year Building &Improvements 11,136      
Gross Amounts of Which Carried at End of Year Total 12,077      
Accumulated Depreciation $ 1,799      
Date of Construction 2011      
Date Acquired 10-July      
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 $ 11,031      
Initial Cost Land 1,437      
Initial Cost Building &Improvements 13,437      
Cost Capitalized Subsequent to Acquisition Improvements 135      
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 $ 2,838      
Date of Construction 2009      
Date Acquired 8-Aug      
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] | Tattersall Village, Hinesville, GA [Member] | GABON        
Encumbrances $ 20,025      
Initial Cost Land 2,670      
Initial Cost Building &Improvements 23,767      
Gross Amounts of Which Carried at End of Year Land 2,670      
Gross Amounts of Which Carried at End of Year Building &Improvements 23,767      
Gross Amounts of Which Carried at End of Year Total 26,437      
Accumulated Depreciation $ 594      
Date of Construction 2010      
Date Acquired 16-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 $ 20,104      
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 22,100      
Accumulated Depreciation $ 3,267      
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] | Tradewinds, Midland [Member] | TEXAS        
Encumbrances $ 13,882      
Initial Cost Land 3,313      
Initial Cost Building &Improvements 20,073      
Gross Amounts of Which Carried at End of Year Land 3,313      
Gross Amounts of Which Carried at End of Year Building &Improvements 20,073      
Gross Amounts of Which Carried at End of Year Total 23,386      
Accumulated Depreciation $ 1,250      
Date of Construction 2015      
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] | Villager, Ft. Walton [Member] | FLORIDA        
Encumbrances $ 713      
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 $ 84      
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 Park West I, Pueblo [Member] | COLOMBIA        
Encumbrances $ 10,250      
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 $ 806      
Date of Construction 2005      
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] | Villas at Park West II, Pueblo [Member] | COLOMBIA        
Encumbrances $ 9,278      
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 $ 1,007      
Date of Construction 2010      
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] | Vista Ridge, Tupelo [Member] | MONTSERRAT        
Encumbrances $ 10,530      
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 $ 1,197      
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] | Vistas of Vance Jackson, San Antonio [Member] | TEXAS        
Encumbrances $ 14,834      
Initial Cost Land 1,265      
Initial Cost Building &Improvements 16,760      
Cost Capitalized Subsequent to Acquisition Improvements 121      
Gross Amounts of Which Carried at End of Year Land 1,265      
Gross Amounts of Which Carried at End of Year Building &Improvements 16,881      
Gross Amounts of Which Carried at End of Year Total 18,146      
Accumulated Depreciation $ 5,159      
Date of Construction 2004      
Date Acquired 4-Jan      
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 $ 16,940      
Initial Cost Land 2,341      
Initial Cost Building &Improvements 20,926      
Gross Amounts of Which Carried at End of Year Land 2,341      
Gross Amounts of Which Carried at End of Year Building &Improvements 20,926      
Gross Amounts of Which Carried at End of Year Total 23,267      
Accumulated Depreciation $ 1,305      
Date of Construction 2013      
Date Acquired 14-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] | Westwood, Mary Ester [Member] | FLORIDA        
Encumbrances $ 3,938      
Initial Cost Land 693      
Initial Cost Building &Improvements 6,650      
Gross Amounts of Which Carried at End of Year Land 693      
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 $ 430      
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] | Windsong, Fort Worth [Member] | TEXAS        
Encumbrances $ 10,459      
Initial Cost Land 790      
Initial Cost Building &Improvements 11,595      
Gross Amounts of Which Carried at End of Year Land 790      
Gross Amounts of Which Carried at End of Year Building &Improvements 11,595      
Gross Amounts of Which Carried at End of Year Total 12,385      
Accumulated Depreciation $ 4,019      
Date of Construction 2002      
Date Acquired 3-Jul      
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 $ 68,470      
Initial Cost Land 19,555      
Cost Capitalized Subsequent to Acquisition Improvements 85,236      
Gross Amounts of Which Carried at End of Year Land 19,555      
Gross Amounts of Which Carried at End of Year Building &Improvements 85,236      
Gross Amounts of Which Carried at End of Year Total 104,791      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Abode Red Rock [Member]        
Encumbrances 22,945      
Initial Cost Land 6,038      
Cost Capitalized Subsequent to Acquisition Improvements 28,095      
Gross Amounts of Which Carried at End of Year Land 6,038      
Gross Amounts of Which Carried at End of Year Building &Improvements 28,095      
Gross Amounts of Which Carried at End of Year Total $ 34,133      
Date Acquired 17-Jan      
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 269      
Gross Amounts of Which Carried at End of Year Land 5,040      
Gross Amounts of Which Carried at End of Year Building &Improvements 269      
Gross Amounts of Which Carried at End of Year Total $ 5,309      
Date Acquired 17-Jun      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Lakeside Lofts, Farmers Branch [Member] | TEXAS        
Encumbrances $ 1      
Cost Capitalized Subsequent to Acquisition Improvements 5,079      
Gross Amounts of Which Carried at End of Year Building &Improvements 5,079      
Gross Amounts of Which Carried at End of Year Total $ 5,079      
Date Acquired 17-Aug      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | McKinney Point [Member]        
Cost Capitalized Subsequent to Acquisition Improvements $ 137      
Gross Amounts of Which Carried at End of Year Building &Improvements 137      
Gross Amounts of Which Carried at End of Year Total $ 137      
Date Acquired 17-Oct      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Parc at Bentonville [Member]        
Cost Capitalized Subsequent to Acquisition Improvements $ 85      
Gross Amounts of Which Carried at End of Year Building &Improvements 85      
Gross Amounts of Which Carried at End of Year Total $ 85      
Date Acquired 17-Aug      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Parc at Garland [Member]        
Cost Capitalized Subsequent to Acquisition Improvements $ 81      
Gross Amounts of Which Carried at End of Year Building &Improvements 81      
Gross Amounts of Which Carried at End of Year Total $ 81      
Date Acquired 17-Aug      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Parc at Wylie [Member]        
Cost Capitalized Subsequent to Acquisition Improvements $ 195      
Gross Amounts of Which Carried at End of Year Building &Improvements 195      
Gross Amounts of Which Carried at End of Year Total $ 195      
Date Acquired 17-Aug      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Oak Hollow II [Member]        
Encumbrances $ 5,475      
Initial Cost Land 1,046      
Cost Capitalized Subsequent to Acquisition Improvements 4,622      
Gross Amounts of Which Carried at End of Year Land 1,046      
Gross Amounts of Which Carried at End of Year Building &Improvements 4,622      
Gross Amounts of Which Carried at End of Year Total $ 5,668      
Date Acquired 7-Apr      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Overlook at Allensville Square II, Seigerville [Member] | TUNISIA        
Initial Cost Land $ 1,843      
Cost Capitalized Subsequent to Acquisition Improvements 530      
Gross Amounts of Which Carried at End of Year Land 1,843      
Gross Amounts of Which Carried at End of Year Building &Improvements 530      
Gross Amounts of Which Carried at End of Year Total $ 2,373      
Date Acquired 15-Nov      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Sawgrass II [Member]        
Encumbrances $ 1,007      
Cost Capitalized Subsequent to Acquisition Improvements 3,772      
Gross Amounts of Which Carried at End of Year Building &Improvements 3,772      
Gross Amounts of Which Carried at End of Year Total $ 3,772      
Date Acquired 17-Jun      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Terra Lago, Rowlett [Member] | TEXAS        
Encumbrances $ 39,042      
Initial Cost Land 5,588      
Cost Capitalized Subsequent to Acquisition Improvements 42,137      
Gross Amounts of Which Carried at End of Year Land 5,588      
Gross Amounts of Which Carried at End of Year Building &Improvements 42,137      
Gross Amounts of Which Carried at End of Year Total $ 47,725      
Date Acquired 15-Nov      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Apalache Point [Member]        
Cost Capitalized Subsequent to Acquisition Improvements $ 149      
Gross Amounts of Which Carried at End of Year Building &Improvements 149      
Gross Amounts of Which Carried at End of Year Total 149      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Eagle Crossing [Member]        
Cost Capitalized Subsequent to Acquisition Improvements 81      
Gross Amounts of Which Carried at End of Year Building &Improvements 81      
Gross Amounts of Which Carried at End of Year Total 81      
Properties Held for Investment/Corporate Debt [Member] | Apartments Under Construction [Member] | Sugar Mill II [Member]        
Cost Capitalized Subsequent to Acquisition Improvements 4      
Gross Amounts of Which Carried at End of Year Building &Improvements 4      
Gross Amounts of Which Carried at End of Year Total 4      
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member]        
Encumbrances 126,579      
Initial Cost Land 17,545      
Initial Cost Building &Improvements 159,767      
Cost Capitalized Subsequent to Acquisition Improvements 38,384      
Asset Impairment (14,900)      
Gross Amounts of Which Carried at End of Year Land 17,545      
Gross Amounts of Which Carried at End of Year Building &Improvements 183,251      
Gross Amounts of Which Carried at End of Year Total 200,796      
Accumulated Depreciation 63,646      
Properties Held for Investment/Corporate Debt [Member] | Commercial Held for Investment [Member] | 600 Las Colinass Colinas [Member] | TEXAS        
Encumbrances 38,600      
Initial Cost Land 5,751      
Initial Cost Building &Improvements 53,972      
Cost Capitalized Subsequent to Acquisition Improvements 16,360      
Gross Amounts of Which Carried at End of Year Land 5,751      
Gross Amounts of Which Carried at End of Year Building &Improvements 70,332      
Gross Amounts of Which Carried at End of Year Total 76,083      
Accumulated Depreciation $ 26,899      
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 $ 12,600      
Initial Cost Land 1,763      
Initial Cost Building &Improvements 15,839      
Cost Capitalized Subsequent to Acquisition Improvements 264      
Gross Amounts of Which Carried at End of Year Land 1,763      
Gross Amounts of Which Carried at End of Year Building &Improvements 16,103      
Gross Amounts of Which Carried at End of Year Total 17,866      
Accumulated Depreciation $ 1,122      
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 $ 4,906      
Initial Cost Building &Improvements 658      
Cost Capitalized Subsequent to Acquisition Improvements 476      
Gross Amounts of Which Carried at End of Year Building &Improvements 1,134      
Gross Amounts of Which Carried at End of Year Total 1,134      
Accumulated Depreciation $ 617      
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 $ 42,473      
Initial Cost Land 5,096      
Initial Cost Building &Improvements 47,711      
Cost Capitalized Subsequent to Acquisition Improvements 13,728      
Gross Amounts of Which Carried at End of Year Land 5,096      
Gross Amounts of Which Carried at End of Year Building &Improvements 61,439      
Gross Amounts of Which Carried at End of Year Total 66,535      
Accumulated Depreciation $ 23,746      
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        
Initial Cost Land $ 418      
Initial Cost Building &Improvements 6,037      
Cost Capitalized Subsequent to Acquisition Improvements 147      
Asset Impairment (5,300)      
Gross Amounts of Which Carried at End of Year Land 418      
Gross Amounts of Which Carried at End of Year Building &Improvements 884      
Gross Amounts of Which Carried at End of Year Total 1,302      
Accumulated Depreciation $ 502      
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] | Fruitland Plaza, Fruitland Park [Member] | FLORIDA        
Initial Cost Land $ 17      
Initial Cost Building &Improvements 16      
Cost Capitalized Subsequent to Acquisition Improvements 67      
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 $ 54      
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      
Initial Cost Building &Improvements 58      
Cost Capitalized Subsequent to Acquisition Improvements 85      
Gross Amounts of Which Carried at End of Year Land 622      
Gross Amounts of Which Carried at End of Year Building &Improvements 143      
Gross Amounts of Which Carried at End of Year Total 765      
Accumulated Depreciation $ 139      
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 $ 28,000      
Initial Cost Land 3,878      
Initial Cost Building &Improvements 35,476      
Cost Capitalized Subsequent to Acquisition Improvements 7,257      
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 33,133      
Gross Amounts of Which Carried at End of Year Total 37,011      
Accumulated Depreciation $ 10,567      
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 $ 27,783      
Initial Cost Land 90,721      
Cost Capitalized Subsequent to Acquisition Improvements 20,167      
Asset Impairment (33,329)      
Gross Amounts of Which Carried at End of Year Land 91,065      
Gross Amounts of Which Carried at End of Year Building &Improvements (13,162)      
Gross Amounts of Which Carried at End of Year Total 77,559      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Audubon, Adams County [Member] | MONTSERRAT        
Initial Cost Land 519      
Cost Capitalized Subsequent to Acquisition Improvements 296      
Gross Amounts of Which Carried at End of Year Land 519      
Gross Amounts of Which Carried at End of Year Building &Improvements 296      
Gross Amounts of Which Carried at End of Year Total $ 815      
Date Acquired 7-Mar      
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        
Encumbrances $ 157      
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 8      
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] | Denham Springs, Denham Springs [Member] | LOUISIANA        
Encumbrances $ 61      
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 8-Aug      
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 Building &Improvements (238)      
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 $ 14,922      
Initial Cost Land 48,927      
Cost Capitalized Subsequent to Acquisition Improvements 14,210      
Asset Impairment (20,376)      
Gross Amounts of Which Carried at End of Year Land 48,927      
Gross Amounts of Which Carried at End of Year Building &Improvements (6,166)      
Gross Amounts of Which Carried at End of Year Total $ 42,761      
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] | Hollywood Casino Land Tract II, Farmers Branch [Member] | TEXAS        
Initial Cost Land $ 3,192      
Cost Capitalized Subsequent to Acquisition Improvements 1,346      
Gross Amounts of Which Carried at End of Year Land 3,192      
Gross Amounts of Which Carried at End of Year Building &Improvements 1,346      
Gross Amounts of Which Carried at End of Year Total $ 4,538      
Date Acquired 8-Mar      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Lacy Longhorn Land, Farmers Branch [Member] | TEXAS        
Initial Cost Land $ 1,169      
Asset Impairment (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      
Asset Impairment (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      
Asset Impairment (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] | 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 5-Aug      
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      
Asset Impairment (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 $ 11,125      
Initial Cost Land 4,040      
Cost Capitalized Subsequent to Acquisition Improvements 2,998      
Gross Amounts of Which Carried at End of Year Land 4,040      
Gross Amounts of Which Carried at End of Year Building &Improvements 2,998      
Gross Amounts of Which Carried at End of Year Total $ 7,038      
Date Acquired 16-Oct      
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 5-Jan      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | McKinney 36, Collin County [Member] | TEXAS        
Encumbrances $ 1,211      
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 142      
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]        
Initial Cost Land $ 1,010      
Gross Amounts of Which Carried at End of Year Land 1,010      
Gross Amounts of Which Carried at End of Year Total 1,010      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | GNB Land Edina 6/07 L2875 [Member]        
Initial Cost Land 7,955      
Asset Impairment (6,023)      
Gross Amounts of Which Carried at End of Year Land 7,955      
Gross Amounts of Which Carried at End of Year Building &Improvements (6,023)      
Gross Amounts of Which Carried at End of Year Total 1,932      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | GNB Land Edina B1530 [Member]        
Initial Cost Land 5,135      
Cost Capitalized Subsequent to Acquisition Improvements 32      
Asset Impairment (3,692)      
Gross Amounts of Which Carried at End of Year Land 5,135      
Gross Amounts of Which Carried at End of Year Building &Improvements (3,660)      
Gross Amounts of Which Carried at End of Year Total 1,475      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Manhattan Land, Farmers Branch [Member] | TEXAS        
Initial Cost Land 344      
Cost Capitalized Subsequent to Acquisition Improvements 611      
Gross Amounts of Which Carried at End of Year Building &Improvements 611      
Gross Amounts of Which Carried at End of Year Total 267      
Properties Held for Investment/Corporate Debt [Member] | Land Held for Investment [Member] | Meloy/Portage Land, Kent OH [Member]        
Initial Cost Land 5,119      
Asset Impairment (1,069)      
Gross Amounts of Which Carried at End of Year Land 5,119      
Gross Amounts of Which Carried at End of Year Building &Improvements (1,069)      
Gross Amounts of Which Carried at End of Year Total 4,050      
Properties Held for Investment/Corporate Debt [Member] | Corporate Departments/Investments/Misc [Member]        
Encumbrances 119,786      
Initial Cost Building &Improvements 660      
Gross Amounts of Which Carried at End of Year Building &Improvements 660      
Gross Amounts of Which Carried at End of Year Total 660      
Accumulated Depreciation 4      
Properties Held for Investment/Corporate Debt [Member] | Corporate Departments/Investments/Misc [Member] | TCI - Corporate [Member]        
Encumbrances 119,786      
Initial Cost Building &Improvements 660      
Gross Amounts of Which Carried at End of Year Building &Improvements 660      
Gross Amounts of Which Carried at End of Year Total 660      
Accumulated Depreciation 4      
Properties Subject to Sales Contract [Member]        
Encumbrances 1,499      
Initial Cost Land 61,149      
Cost Capitalized Subsequent to Acquisition Improvements 820      
Asset Impairment (13,734)      
Gross Amounts of Which Carried at End of Year Land 48,235      
Gross Amounts of Which Carried at End of Year Total 48,235      
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member]        
Encumbrances 1,499      
Initial Cost Land 61,149      
Cost Capitalized Subsequent to Acquisition Improvements 820      
Asset Impairment (13,734)      
Gross Amounts of Which Carried at End of Year Land 48,235      
Gross Amounts of Which Carried at End of Year Total 48,235      
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Dominion Tract, Dallas [Member] | TEXAS        
Encumbrances 1,079      
Initial Cost Land 2,083      
Cost Capitalized Subsequent to Acquisition Improvements 53      
Asset Impairment (133)      
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 Mar-99      
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Hollywood Casino Tract I, Farmers Branch [Member] | TEXAS        
Encumbrances $ 420      
Initial Cost Land 1,608      
Cost Capitalized Subsequent to Acquisition Improvements 125      
Asset Impairment (110)      
Gross Amounts of Which Carried at End of Year Land 1,623      
Gross Amounts of Which Carried at End of Year Total 1,623      
Accumulated Depreciation $ 2,327      
Date Acquired 2-Jun      
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | LaDue Land, Farmers Branch [Member] | TEXAS        
Initial Cost Land $ 1,845      
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 Jul-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 14-Mar      
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 6-Nov      
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Travelers Land, Farmers Branch [Member] | TEXAS        
Initial Cost Land $ 6,891      
Asset Impairment (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 6-Nov      
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 14-Mar      
Properties Subject to Sales Contract [Member] | Land Subject to Sales Contract [Member] | Walker Land, Dallas County [Member] | TEXAS        
Initial Cost Land $ 19,167      
Cost Capitalized Subsequent to Acquisition Improvements 70      
Asset Impairment (6,062)      
Gross Amounts of Which Carried at End of Year Land 13,175      
Gross Amounts of Which Carried at End of Year Total $ 13,175      
Date Acquired 6-Sep      
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 1,627      
Gross Amounts of Which Carried at End of Year Total $ 1,627      
Date Acquired 5-Jun      
Land Sold [Member]        
Encumbrances $ 910,694      
Initial Cost Land 249,710      
Initial Cost Building &Improvements 832,441      
Cost Capitalized Subsequent to Acquisition Improvements 148,654      
Asset Impairment (65,143)      
Gross Amounts of Which Carried at End of Year Land 237,140      
Gross Amounts of Which Carried at End of Year Building &Improvements 928,866      
Gross Amounts of Which Carried at End of Year Total 1,165,662      
Accumulated Depreciation $ 177,546