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Schedule III - Real Estate and Accumulated Depreciation - Properties (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed      
Real Estate Subject To Operating Lease        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 1,586,581      
Initial Cost to Company        
Land 1,252,460      
Buildings 4,215,721      
Cost Capitalized Subsequent to Acquisition 190,568      
Increase (Decrease) in Net Investments (476,482)      
Gross Amount at which Carried at Close of Period        
Land 1,128,933      
Buildings 4,053,334      
Total 5,182,267 $ 5,308,211 $ 4,976,685 $ 2,506,804
Accumulated Depreciation 472,294 372,735 253,627 168,076
Real Estate Subject To Operating Lease | Industrial facilities in Erlanger, KY        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 10,794      
Initial Cost to Company        
Land 1,526      
Buildings 21,427      
Cost Capitalized Subsequent to Acquisition 2,966      
Increase (Decrease) in Net Investments 141      
Gross Amount at which Carried at Close of Period        
Land 1,526      
Buildings 24,534      
Total 26,060      
Accumulated Depreciation $ 12,048      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Industrial facilities in Thurmont, MD and Farmington, NY        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 729      
Buildings 5,903      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 729      
Buildings 5,903      
Total 6,632      
Accumulated Depreciation $ 1,057      
Life on which Depreciation in Latest Statement of Income is Computed 15 years      
Real Estate Subject To Operating Lease | Retail facility in Montgomery, AL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 855      
Buildings 6,762      
Cost Capitalized Subsequent to Acquisition 277      
Increase (Decrease) in Net Investments (6,978)      
Gross Amount at which Carried at Close of Period        
Land 142      
Buildings 774      
Total 916      
Accumulated Depreciation $ 490      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Anchorage, AK and Commerce, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 4,905      
Buildings 11,898      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 12      
Gross Amount at which Carried at Close of Period        
Land 4,905      
Buildings 11,910      
Total 16,815      
Accumulated Depreciation $ 4,018      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Industrial facility in Toledo, OH        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 224      
Buildings 2,408      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 224      
Buildings 2,408      
Total 2,632      
Accumulated Depreciation $ 1,405      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Industrial facility in Goshen, IN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 239      
Buildings 940      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 239      
Buildings 940      
Total 1,179      
Accumulated Depreciation $ 321      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Raleigh, NC        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,638      
Buildings 2,844      
Cost Capitalized Subsequent to Acquisition 187      
Increase (Decrease) in Net Investments (2,554)      
Gross Amount at which Carried at Close of Period        
Land 828      
Buildings 1,287      
Total 2,115      
Accumulated Depreciation $ 737      
Life on which Depreciation in Latest Statement of Income is Computed 20 years      
Real Estate Subject To Operating Lease | Office facility in King of Prussia, PA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,219      
Buildings 6,283      
Cost Capitalized Subsequent to Acquisition 1,295      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,219      
Buildings 7,578      
Total 8,797      
Accumulated Depreciation $ 3,445      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Industrial facility in Pinconning, MI        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 32      
Buildings 1,692      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 32      
Buildings 1,692      
Total 1,724      
Accumulated Depreciation $ 804      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Industrial facilities in San Fernando, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 6,466      
Initial Cost to Company        
Land 2,052      
Buildings 5,322      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,889)      
Gross Amount at which Carried at Close of Period        
Land 1,494      
Buildings 3,991      
Total 5,485      
Accumulated Depreciation $ 1,913      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Retail facilities in several cities in the following states: Alabama, Florida, Georgia, Illinois, Louisiana, Missouri, New Mexico, North Carolina, South Carolina, Tennessee, and Texas        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 9,382      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 238      
Increase (Decrease) in Net Investments 12,618      
Gross Amount at which Carried at Close of Period        
Land 9,025      
Buildings 13,213      
Total 22,238      
Accumulated Depreciation $ 1,779      
Life on which Depreciation in Latest Statement of Income is Computed 15 years      
Real Estate Subject To Operating Lease | Land in Glendora, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,135      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 17      
Gross Amount at which Carried at Close of Period        
Land 1,152      
Buildings 0      
Total 1,152      
Accumulated Depreciation 0      
Real Estate Subject To Operating Lease | Warehouse facility in Doraville, GA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 3,288      
Buildings 9,864      
Cost Capitalized Subsequent to Acquisition 15,374      
Increase (Decrease) in Net Investments (11,409)      
Gross Amount at which Carried at Close of Period        
Land 3,288      
Buildings 13,829      
Total 17,117      
Accumulated Depreciation $ 58      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Collierville, TN and warehouse facility in Corpus Christi, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 47,006      
Initial Cost to Company        
Land 3,490      
Buildings 72,497      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (15,609)      
Gross Amount at which Carried at Close of Period        
Land 288      
Buildings 60,090      
Total 60,378      
Accumulated Depreciation $ 11,877      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Land in Irving and Houston, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 9,795      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 9,795      
Buildings 0      
Total 9,795      
Accumulated Depreciation 0      
Real Estate Subject To Operating Lease | Industrial facility in Chandler, AZ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 8,984      
Initial Cost to Company        
Land 5,035      
Buildings 18,957      
Cost Capitalized Subsequent to Acquisition 7,435      
Increase (Decrease) in Net Investments 541      
Gross Amount at which Carried at Close of Period        
Land 5,035      
Buildings 26,933      
Total 31,968      
Accumulated Depreciation $ 12,102      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Bridgeton, MO        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 842      
Buildings 4,762      
Cost Capitalized Subsequent to Acquisition 2,523      
Increase (Decrease) in Net Investments 71      
Gross Amount at which Carried at Close of Period        
Land 842      
Buildings 7,356      
Total 8,198      
Accumulated Depreciation $ 2,886      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Retail facilities in Drayton Plains, MI and Citrus Heights, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,039      
Buildings 4,788      
Cost Capitalized Subsequent to Acquisition 236      
Increase (Decrease) in Net Investments 193      
Gross Amount at which Carried at Close of Period        
Land 1,039      
Buildings 5,217      
Total 6,256      
Accumulated Depreciation $ 1,576      
Life on which Depreciation in Latest Statement of Income is Computed 35 years      
Real Estate Subject To Operating Lease | Warehouse facility in Memphis, TN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,882      
Buildings 3,973      
Cost Capitalized Subsequent to Acquisition 294      
Increase (Decrease) in Net Investments (3,892)      
Gross Amount at which Carried at Close of Period        
Land 328      
Buildings 1,929      
Total 2,257      
Accumulated Depreciation $ 942      
Life on which Depreciation in Latest Statement of Income is Computed 15 years      
Real Estate Subject To Operating Lease | Retail facility in Bellevue, WA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 4,125      
Buildings 11,812      
Cost Capitalized Subsequent to Acquisition 393      
Increase (Decrease) in Net Investments (123)      
Gross Amount at which Carried at Close of Period        
Land 4,371      
Buildings 11,836      
Total 16,207      
Accumulated Depreciation $ 5,495      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Houston, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 3,260      
Buildings 22,574      
Cost Capitalized Subsequent to Acquisition 1,628      
Increase (Decrease) in Net Investments (26,145)      
Gross Amount at which Carried at Close of Period        
Land 211      
Buildings 1,106      
Total 1,317      
Accumulated Depreciation $ 268      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Rio Rancho, NM        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,190      
Buildings 9,353      
Cost Capitalized Subsequent to Acquisition 3,016      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,287      
Buildings 11,272      
Total 13,559      
Accumulated Depreciation $ 4,888      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Moorestown, NJ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 351      
Buildings 5,981      
Cost Capitalized Subsequent to Acquisition 1,516      
Increase (Decrease) in Net Investments 43      
Gross Amount at which Carried at Close of Period        
Land 351      
Buildings 7,540      
Total 7,891      
Accumulated Depreciation $ 3,637      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Illkirch, France        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 6,993      
Initial Cost to Company        
Land 0      
Buildings 18,520      
Cost Capitalized Subsequent to Acquisition 6      
Increase (Decrease) in Net Investments (4,352)      
Gross Amount at which Carried at Close of Period        
Land 0      
Buildings 14,174      
Total 14,174      
Accumulated Depreciation $ 9,325      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Industrial facilities in Lenexa, KS and Winston-Salem, NC        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,860      
Buildings 12,539      
Cost Capitalized Subsequent to Acquisition 2,875      
Increase (Decrease) in Net Investments (1,135)      
Gross Amount at which Carried at Close of Period        
Land 1,725      
Buildings 14,414      
Total 16,139      
Accumulated Depreciation $ 4,731      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facilities in Playa Vista and Venice, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 45,301      
Initial Cost to Company        
Land 2,032      
Buildings 10,152      
Cost Capitalized Subsequent to Acquisition 52,817      
Increase (Decrease) in Net Investments 1      
Gross Amount at which Carried at Close of Period        
Land 5,889      
Buildings 59,113      
Total 65,002      
Accumulated Depreciation $ 9,967      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Warehouse facility in Greenfield, IN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,807      
Buildings 10,335      
Cost Capitalized Subsequent to Acquisition 223      
Increase (Decrease) in Net Investments (8,383)      
Gross Amount at which Carried at Close of Period        
Land 967      
Buildings 4,015      
Total 4,982      
Accumulated Depreciation $ 1,426      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Industrial facility in Scottsdale, AZ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 586      
Buildings 46      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 586      
Buildings 46      
Total 632      
Accumulated Depreciation $ 14      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Retail facility in Hot Springs, AR        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 850      
Buildings 2,939      
Cost Capitalized Subsequent to Acquisition 2      
Increase (Decrease) in Net Investments (2,614)      
Gross Amount at which Carried at Close of Period        
Land 0      
Buildings 1,177      
Total 1,177      
Accumulated Depreciation $ 362      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Apopka, FL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 362      
Buildings 10,855      
Cost Capitalized Subsequent to Acquisition 920      
Increase (Decrease) in Net Investments (155)      
Gross Amount at which Carried at Close of Period        
Land 337      
Buildings 11,645      
Total 11,982      
Accumulated Depreciation $ 3,335      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Land in San Leandro, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,532      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,532      
Buildings 0      
Total 1,532      
Accumulated Depreciation 0      
Real Estate Subject To Operating Lease | Fitness facility in Austin, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 2,466      
Initial Cost to Company        
Land 1,725      
Buildings 5,168      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,725      
Buildings 5,168      
Total 6,893      
Accumulated Depreciation $ 1,829      
Life on which Depreciation in Latest Statement of Income is Computed 29 years      
Real Estate Subject To Operating Lease | Retail facility in Wroclaw, Poland        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 6,188      
Initial Cost to Company        
Land 3,600      
Buildings 10,306      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (4,373)      
Gross Amount at which Carried at Close of Period        
Land 2,636      
Buildings 6,897      
Total 9,533      
Accumulated Depreciation $ 1,554      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Fort Worth, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 31,081      
Initial Cost to Company        
Land 4,600      
Buildings 37,580      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 4,600      
Buildings 37,580      
Total 42,180      
Accumulated Depreciation $ 6,499      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Warehouse facility in Mallorca, Spain        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 11,109      
Buildings 12,636      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (2,791)      
Gross Amount at which Carried at Close of Period        
Land 9,785      
Buildings 11,169      
Total 20,954      
Accumulated Depreciation $ 1,835      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Retail facilities in Florence, AL; Snellville, GA; Concord, NC; Rockport, TX; and Virginia Beach, VA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 21,984      
Initial Cost to Company        
Land 5,646      
Buildings 12,367      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 5,646      
Buildings 12,367      
Total 18,013      
Accumulated Depreciation $ 1,412      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Hotels in Irvine, Sacramento, and San Diego, CA; Orlando, FL; Des Plaines, IL; Indianapolis, IN; Louisville, KY; Linthicum Heights, MD; Newark, NJ; Albuquerque, NM; and Spokane, WA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 135,299      
Initial Cost to Company        
Land 32,680      
Buildings 198,999      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 32,680      
Buildings 198,999      
Total 231,679      
Accumulated Depreciation $ 23,301      
Real Estate Subject To Operating Lease | Hotels in Irvine, Sacramento, and San Diego, CA; Orlando, FL; Des Plaines, IL; Indianapolis, IN; Louisville, KY; Linthicum Heights, MD; Newark, NJ; Albuquerque, NM; and Spokane, WA | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 34 years      
Real Estate Subject To Operating Lease | Hotels in Irvine, Sacramento, and San Diego, CA; Orlando, FL; Des Plaines, IL; Indianapolis, IN; Louisville, KY; Linthicum Heights, MD; Newark, NJ; Albuquerque, NM; and Spokane, WA | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 37 years      
Real Estate Subject To Operating Lease | Industrial facilities in Auburn, IN; Clinton Township, MI; and Bluffton, OH        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 7,310      
Initial Cost to Company        
Land 4,403      
Buildings 20,298      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (3,870)      
Gross Amount at which Carried at Close of Period        
Land 2,589      
Buildings 18,242      
Total 20,831      
Accumulated Depreciation $ 2,082      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Land in Irvine, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 1,619      
Initial Cost to Company        
Land 4,173      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 4,173      
Buildings 0      
Total 4,173      
Accumulated Depreciation 0      
Real Estate Subject To Operating Lease | Industrial facility in Alpharetta, GA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 7,014      
Initial Cost to Company        
Land 2,198      
Buildings 6,349      
Cost Capitalized Subsequent to Acquisition 1,248      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,198      
Buildings 7,597      
Total 9,795      
Accumulated Depreciation $ 921      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Office facility in Clinton, NJ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 21,952      
Initial Cost to Company        
Land 2,866      
Buildings 34,834      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,866      
Buildings 34,834      
Total 37,700      
Accumulated Depreciation $ 4,943      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Office facilities in St. Petersburg, FL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 3,280      
Buildings 24,627      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,280      
Buildings 24,627      
Total 27,907      
Accumulated Depreciation $ 3,483      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Movie theater in Baton Rouge, LA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 4,168      
Buildings 5,724      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 4,168      
Buildings 5,724      
Total 9,892      
Accumulated Depreciation $ 813      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Industrial and office facility in San Diego, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 7,804      
Buildings 16,729      
Cost Capitalized Subsequent to Acquisition 1,725      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 7,804      
Buildings 18,454      
Total 26,258      
Accumulated Depreciation $ 2,774      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Industrial facility in Richmond, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 895      
Buildings 1,953      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 895      
Buildings 1,953      
Total 2,848      
Accumulated Depreciation $ 277      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Kingman, AZ; Woodland, CA; Jonesboro, GA; Kansas City, MO; Springfield, OR; Fogelsville, PA; and Corsicana, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 56,061      
Initial Cost to Company        
Land 16,386      
Buildings 84,668      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 16,386      
Buildings 84,668      
Total 101,054      
Accumulated Depreciation $ 11,916      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Industrial facilities in Orlando, FL; Rocky Mount, NC; and Lewisville, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,163      
Buildings 17,715      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,163      
Buildings 17,715      
Total 19,878      
Accumulated Depreciation $ 2,514      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Industrial facilities in Chattanooga, TN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 558      
Buildings 5,923      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 558      
Buildings 5,923      
Total 6,481      
Accumulated Depreciation $ 831      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Industrial facility in Mooresville, NC        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 4,536      
Initial Cost to Company        
Land 756      
Buildings 9,775      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 756      
Buildings 9,775      
Total 10,531      
Accumulated Depreciation $ 1,368      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Industrial facility in McCalla, AL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 960      
Buildings 14,472      
Cost Capitalized Subsequent to Acquisition 7,466      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,076      
Buildings 20,822      
Total 22,898      
Accumulated Depreciation $ 3,337      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Office facility in Lower Makefield Township, PA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 9,052      
Initial Cost to Company        
Land 1,726      
Buildings 12,781      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,726      
Buildings 12,781      
Total 14,507      
Accumulated Depreciation $ 1,784      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Industrial facility in Fort Smith, AZ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,063      
Buildings 6,159      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,063      
Buildings 6,159      
Total 7,222      
Accumulated Depreciation $ 853      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Retail facilities in Greenwood, IN and Buffalo, NY        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 8,176      
Initial Cost to Company        
Land 0      
Buildings 19,990      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 0      
Buildings 19,990      
Total 19,990      
Accumulated Depreciation $ 2,738      
Real Estate Subject To Operating Lease | Retail facilities in Greenwood, IN and Buffalo, NY | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Retail facilities in Greenwood, IN and Buffalo, NY | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facilities in Bowling Green, KY and Jackson, TN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 6,004      
Initial Cost to Company        
Land 1,492      
Buildings 8,182      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,492      
Buildings 8,182      
Total 9,674      
Accumulated Depreciation $ 1,130      
Real Estate Subject To Operating Lease | Industrial facilities in Bowling Green, KY and Jackson, TN | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Education facilities in Avondale, AZ; Rancho Cucamonga, CA; Glendale Heights, IL; and Exton, PA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 30,593      
Initial Cost to Company        
Land 14,006      
Buildings 33,683      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,961)      
Gross Amount at which Carried at Close of Period        
Land 12,045      
Buildings 33,683      
Total 45,728      
Accumulated Depreciation $ 4,480      
Real Estate Subject To Operating Lease | Education facilities in Avondale, AZ; Rancho Cucamonga, CA; Glendale Heights, IL; and Exton, PA | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Education facilities in Avondale, AZ; Rancho Cucamonga, CA; Glendale Heights, IL; and Exton, PA | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 32 years      
Real Estate Subject To Operating Lease | Industrial facilities in St. Petersburg, FL; Buffalo Grove, IL; West Lafayette, IN; Excelsior Springs, MO; and North Versailles, PA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 9,131      
Initial Cost to Company        
Land 6,559      
Buildings 19,078      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 6,559      
Buildings 19,078      
Total 25,637      
Accumulated Depreciation $ 2,613      
Real Estate Subject To Operating Lease | Industrial facilities in St. Petersburg, FL; Buffalo Grove, IL; West Lafayette, IN; Excelsior Springs, MO; and North Versailles, PA | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facilities in Tolleson, AZ; Alsip, IL; and Solvay, NY        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 11,285      
Initial Cost to Company        
Land 6,080      
Buildings 23,424      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 6,080      
Buildings 23,424      
Total 29,504      
Accumulated Depreciation $ 3,183      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Land in Kahl, Germany        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 6,694      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,207)      
Gross Amount at which Carried at Close of Period        
Land 5,487      
Buildings 0      
Total 5,487      
Accumulated Depreciation 0      
Real Estate Subject To Operating Lease | Fitness facilities in Englewood, CO; Memphis TN; and Bedford, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 7,210      
Initial Cost to Company        
Land 4,877      
Buildings 4,258      
Cost Capitalized Subsequent to Acquisition 5,169      
Increase (Decrease) in Net Investments 4,823      
Gross Amount at which Carried at Close of Period        
Land 4,877      
Buildings 14,250      
Total 19,127      
Accumulated Depreciation $ 1,462      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Office facility in Mons, Belgium        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 7,061      
Initial Cost to Company        
Land 1,505      
Buildings 6,026      
Cost Capitalized Subsequent to Acquisition 653      
Increase (Decrease) in Net Investments (1,504)      
Gross Amount at which Carried at Close of Period        
Land 1,234      
Buildings 5,446      
Total 6,680      
Accumulated Depreciation $ 697      
Life on which Depreciation in Latest Statement of Income is Computed 32 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Oceanside, CA and Concordville, PA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 3,354      
Initial Cost to Company        
Land 3,333      
Buildings 8,270      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,333      
Buildings 8,270      
Total 11,603      
Accumulated Depreciation $ 1,127      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Self-storage facilities located throughout the United States        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 74,551      
Buildings 319,186      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (50)      
Gross Amount at which Carried at Close of Period        
Land 74,501      
Buildings 319,186      
Total 393,687      
Accumulated Depreciation $ 43,024      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Warehouse facility in La Vista, NE        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 20,675      
Initial Cost to Company        
Land 4,196      
Buildings 23,148      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 4,196      
Buildings 23,148      
Total 27,344      
Accumulated Depreciation $ 2,941      
Life on which Depreciation in Latest Statement of Income is Computed 33 years      
Real Estate Subject To Operating Lease | Office facility in Pleasanton, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 9,584      
Initial Cost to Company        
Land 3,675      
Buildings 7,468      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,675      
Buildings 7,468      
Total 11,143      
Accumulated Depreciation $ 1,004      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Office facility in San Marcos, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 440      
Buildings 688      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 440      
Buildings 688      
Total 1,128      
Accumulated Depreciation $ 92      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Office facilities in Espoo, Finland        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 31,853      
Initial Cost to Company        
Land 40,555      
Buildings 15,662      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (24,614)      
Gross Amount at which Carried at Close of Period        
Land 23,499      
Buildings 8,104      
Total 31,603      
Accumulated Depreciation $ 377      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Office facility in Chicago, IL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 13,753      
Initial Cost to Company        
Land 2,169      
Buildings 19,010      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,169      
Buildings 19,010      
Total 21,179      
Accumulated Depreciation $ 2,536      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facility in Louisville, CO        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 7,201      
Initial Cost to Company        
Land 5,342      
Buildings 8,786      
Cost Capitalized Subsequent to Acquisition 1,849      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 5,481      
Buildings 10,496      
Total 15,977      
Accumulated Depreciation $ 1,745      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facilities in Hollywood and Orlando, FL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 3,639      
Buildings 1,269      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,639      
Buildings 1,269      
Total 4,908      
Accumulated Depreciation $ 169      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Warehouse facility in Golden, CO        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 808      
Buildings 4,304      
Cost Capitalized Subsequent to Acquisition 77      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 808      
Buildings 4,381      
Total 5,189      
Accumulated Depreciation $ 641      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Industrial facility in Texarkana, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,755      
Buildings 4,493      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (2,783)      
Gross Amount at which Carried at Close of Period        
Land 216      
Buildings 3,249      
Total 3,465      
Accumulated Depreciation $ 433      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facility in Eugene, OR        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 4,360      
Initial Cost to Company        
Land 2,286      
Buildings 3,783      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,286      
Buildings 3,783      
Total 6,069      
Accumulated Depreciation $ 505      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facility in South Jordan, UT        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 11,940      
Initial Cost to Company        
Land 2,183      
Buildings 11,340      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,183      
Buildings 11,340      
Total 13,523      
Accumulated Depreciation $ 1,513      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Warehouse facility in Ennis, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 2,232      
Initial Cost to Company        
Land 478      
Buildings 4,087      
Cost Capitalized Subsequent to Acquisition 145      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 478      
Buildings 4,232      
Total 4,710      
Accumulated Depreciation $ 667      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Retail facility in Braintree, MA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 2,958      
Initial Cost to Company        
Land 2,409      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 6,184      
Increase (Decrease) in Net Investments (1,403)      
Gross Amount at which Carried at Close of Period        
Land 1,006      
Buildings 6,184      
Total 7,190      
Accumulated Depreciation $ 588      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Office facility in Paris, France        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 53,713      
Initial Cost to Company        
Land 23,387      
Buildings 43,450      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (12,053)      
Gross Amount at which Carried at Close of Period        
Land 19,170      
Buildings 35,614      
Total 54,784      
Accumulated Depreciation $ 4,629      
Life on which Depreciation in Latest Statement of Income is Computed 32 years      
Real Estate Subject To Operating Lease | Retail facilities in Bydgoszcz, Czestochowa, Jablonna, Katowice, Kielce, Lodz, Lubin, Olsztyn, Opole, Plock, Rybnik, Walbrzych, and Warsaw, Poland        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 107,618      
Initial Cost to Company        
Land 26,564      
Buildings 72,866      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (17,930)      
Gross Amount at which Carried at Close of Period        
Land 21,774      
Buildings 59,726      
Total 81,500      
Accumulated Depreciation $ 10,663      
Real Estate Subject To Operating Lease | Retail facilities in Bydgoszcz, Czestochowa, Jablonna, Katowice, Kielce, Lodz, Lubin, Olsztyn, Opole, Plock, Rybnik, Walbrzych, and Warsaw, Poland | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 23 years      
Real Estate Subject To Operating Lease | Retail facilities in Bydgoszcz, Czestochowa, Jablonna, Katowice, Kielce, Lodz, Lubin, Olsztyn, Opole, Plock, Rybnik, Walbrzych, and Warsaw, Poland | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 34 years      
Real Estate Subject To Operating Lease | Industrial facility in Laupheim, Germany        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,072      
Buildings 8,339      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,877)      
Gross Amount at which Carried at Close of Period        
Land 1,699      
Buildings 6,835      
Total 8,534      
Accumulated Depreciation $ 1,456      
Life on which Depreciation in Latest Statement of Income is Computed 20 years      
Real Estate Subject To Operating Lease | Industrial facilities in Danbury, CT and Bedford, MA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 9,078      
Initial Cost to Company        
Land 3,519      
Buildings 16,329      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,519      
Buildings 16,329      
Total 19,848      
Accumulated Depreciation $ 2,324      
Life on which Depreciation in Latest Statement of Income is Computed 29 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Venlo, Netherlands        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 10,154      
Buildings 18,590      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (5,443)      
Gross Amount at which Carried at Close of Period        
Land 8,231      
Buildings 15,070      
Total 23,301      
Accumulated Depreciation $ 1,631      
Life on which Depreciation in Latest Statement of Income is Computed 35 years      
Real Estate Subject To Operating Lease | Industrial and office facility in Tampere, Finland        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,309      
Buildings 37,153      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (7,554)      
Gross Amount at which Carried at Close of Period        
Land 1,843      
Buildings 30,065      
Total 31,908      
Accumulated Depreciation $ 3,442      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Quincy, MA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,316      
Buildings 21,537      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,316      
Buildings 21,537      
Total 23,853      
Accumulated Depreciation $ 2,073      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Salford, United Kingdom        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 0      
Buildings 30,012      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (6,392)      
Gross Amount at which Carried at Close of Period        
Land 0      
Buildings 23,620      
Total 23,620      
Accumulated Depreciation $ 2,022      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Lone Tree, CO        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 4,761      
Buildings 28,864      
Cost Capitalized Subsequent to Acquisition 2,822      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 4,761      
Buildings 31,686      
Total 36,447      
Accumulated Depreciation $ 2,713      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Mönchengladbach, Germany        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 27,988      
Initial Cost to Company        
Land 2,154      
Buildings 6,917      
Cost Capitalized Subsequent to Acquisition 44,205      
Increase (Decrease) in Net Investments (3,449)      
Gross Amount at which Carried at Close of Period        
Land 2,024      
Buildings 47,803      
Total 49,827      
Accumulated Depreciation $ 1,631      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Fitness facility in Houston, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 3,172      
Initial Cost to Company        
Land 2,430      
Buildings 2,270      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,430      
Buildings 2,270      
Total 4,700      
Accumulated Depreciation $ 295      
Life on which Depreciation in Latest Statement of Income is Computed 23 years      
Real Estate Subject To Operating Lease | Fitness facility in St. Charles, MO        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,966      
Buildings 1,368      
Cost Capitalized Subsequent to Acquisition 80      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,966      
Buildings 1,448      
Total 3,414      
Accumulated Depreciation $ 154      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Fitness facility in Salt Lake City, UT        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 2,814      
Initial Cost to Company        
Land 856      
Buildings 2,804      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 856      
Buildings 2,804      
Total 3,660      
Accumulated Depreciation $ 316      
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Land in Scottsdale, AZ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 10,316      
Initial Cost to Company        
Land 22,300      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 22,300      
Buildings 0      
Total 22,300      
Accumulated Depreciation 0      
Real Estate Subject To Operating Lease | Industrial facility in Aurora, CO        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 2,952      
Initial Cost to Company        
Land 737      
Buildings 2,609      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 737      
Buildings 2,609      
Total 3,346      
Accumulated Depreciation $ 241      
Life on which Depreciation in Latest Statement of Income is Computed 32 years      
Real Estate Subject To Operating Lease | Warehouse facility in Burlington, NJ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 3,989      
Buildings 6,213      
Cost Capitalized Subsequent to Acquisition 377      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,989      
Buildings 6,590      
Total 10,579      
Accumulated Depreciation $ 733      
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Industrial facility in Albuquerque, NM        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,467      
Buildings 3,476      
Cost Capitalized Subsequent to Acquisition 606      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,467      
Buildings 4,082      
Total 6,549      
Accumulated Depreciation $ 429      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Industrial facilities in North Salt Lake, UT and Radford, VA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 1,350      
Initial Cost to Company        
Land 10,601      
Buildings 17,626      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (14,477)      
Gross Amount at which Carried at Close of Period        
Land 4,963      
Buildings 8,787      
Total 13,750      
Accumulated Depreciation $ 979      
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Industrial facilities in Lexington, NC and Murrysville, PA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,185      
Buildings 12,058      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 2,713      
Gross Amount at which Carried at Close of Period        
Land 1,608      
Buildings 15,348      
Total 16,956      
Accumulated Depreciation $ 1,613      
Real Estate Subject To Operating Lease | Industrial facilities in Lexington, NC and Murrysville, PA | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Land in Welcome, NC        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 980      
Buildings 11,230      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (11,724)      
Gross Amount at which Carried at Close of Period        
Land 486      
Buildings 0      
Total 486      
Accumulated Depreciation $ 0      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Industrial facilities in Evansville, IN; Lawrence, KS; and Baltimore, MD        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 25,292      
Initial Cost to Company        
Land 4,005      
Buildings 44,192      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 4,005      
Buildings 44,192      
Total 48,197      
Accumulated Depreciation $ 5,405      
Life on which Depreciation in Latest Statement of Income is Computed 24 years      
Real Estate Subject To Operating Lease | Industrial facilities in Colton, CA; Bonner Springs, KS; and Dallas, TX and land in Eagan, MN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 19,214      
Initial Cost to Company        
Land 8,451      
Buildings 25,457      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 298      
Gross Amount at which Carried at Close of Period        
Land 8,451      
Buildings 25,755      
Total 34,206      
Accumulated Depreciation $ 2,615      
Real Estate Subject To Operating Lease | Industrial facilities in Colton, CA; Bonner Springs, KS; and Dallas, TX and land in Eagan, MN | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 17 years      
Real Estate Subject To Operating Lease | Industrial facilities in Colton, CA; Bonner Springs, KS; and Dallas, TX and land in Eagan, MN | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 34 years      
Real Estate Subject To Operating Lease | Retail facility in Torrance, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 24,215      
Initial Cost to Company        
Land 8,412      
Buildings 12,241      
Cost Capitalized Subsequent to Acquisition 1,213      
Increase (Decrease) in Net Investments (77)      
Gross Amount at which Carried at Close of Period        
Land 8,335      
Buildings 13,454      
Total 21,789      
Accumulated Depreciation $ 1,573      
Life on which Depreciation in Latest Statement of Income is Computed 25 years      
Real Estate Subject To Operating Lease | Office facility in Houston, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 3,393      
Initial Cost to Company        
Land 6,578      
Buildings 424      
Cost Capitalized Subsequent to Acquisition 223      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 6,578      
Buildings 647      
Total 7,225      
Accumulated Depreciation $ 81      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Land in Doncaster, United Kingdom        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 4,257      
Buildings 4,248      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (7,893)      
Gross Amount at which Carried at Close of Period        
Land 612      
Buildings 0      
Total 612      
Accumulated Depreciation 0      
Real Estate Subject To Operating Lease | Warehouse facility in Norwich, CT        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 10,695      
Initial Cost to Company        
Land 3,885      
Buildings 21,342      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 2      
Gross Amount at which Carried at Close of Period        
Land 3,885      
Buildings 21,344      
Total 25,229      
Accumulated Depreciation $ 2,203      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Warehouse facility in Norwich, CT        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,437      
Buildings 9,669      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,437      
Buildings 9,669      
Total 11,106      
Accumulated Depreciation $ 998      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Retail facility in Johnstown, PA and warehouse facility in Whitehall, PA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 7,435      
Buildings 9,093      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 17      
Gross Amount at which Carried at Close of Period        
Land 7,435      
Buildings 9,110      
Total 16,545      
Accumulated Depreciation $ 1,151      
Life on which Depreciation in Latest Statement of Income is Computed 23 years      
Real Estate Subject To Operating Lease | Retail facilities in York, PA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 8,603      
Initial Cost to Company        
Land 3,776      
Buildings 10,092      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,776      
Buildings 10,092      
Total 13,868      
Accumulated Depreciation $ 949      
Real Estate Subject To Operating Lease | Retail facilities in York, PA | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Retail facilities in York, PA | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 34 years      
Real Estate Subject To Operating Lease | Industrial facility in Pittsburgh, PA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,151      
Buildings 10,938      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,151      
Buildings 10,938      
Total 12,089      
Accumulated Depreciation $ 1,288      
Life on which Depreciation in Latest Statement of Income is Computed 25 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Atlanta, GA and Elkwood, VA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 5,356      
Buildings 4,121      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (2,104)      
Gross Amount at which Carried at Close of Period        
Land 4,284      
Buildings 3,089      
Total 7,373      
Accumulated Depreciation $ 324      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Warehouse facility in Harrisburg, NC        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,753      
Buildings 5,840      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (111)      
Gross Amount at which Carried at Close of Period        
Land 1,642      
Buildings 5,840      
Total 7,482      
Accumulated Depreciation $ 653      
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Education facility in Nashville, TN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 5,240      
Initial Cost to Company        
Land 1,098      
Buildings 7,043      
Cost Capitalized Subsequent to Acquisition 2,611      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,098      
Buildings 9,654      
Total 10,752      
Accumulated Depreciation $ 799      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facility in Chandler, AZ; industrial, office, and warehouse facility in Englewood, CO; and land in Englewood, CO        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 4,989      
Initial Cost to Company        
Land 4,306      
Buildings 7,235      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 3      
Gross Amount at which Carried at Close of Period        
Land 4,306      
Buildings 7,238      
Total 11,544      
Accumulated Depreciation $ 698      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Industrial facility in Cynthiana, KY        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 2,358      
Initial Cost to Company        
Land 1,274      
Buildings 3,505      
Cost Capitalized Subsequent to Acquisition 480      
Increase (Decrease) in Net Investments (107)      
Gross Amount at which Carried at Close of Period        
Land 1,274      
Buildings 3,878      
Total 5,152      
Accumulated Depreciation $ 363      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facility in Columbia, SC        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,843      
Buildings 11,886      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,843      
Buildings 11,886      
Total 14,729      
Accumulated Depreciation $ 1,534      
Life on which Depreciation in Latest Statement of Income is Computed 23 years      
Real Estate Subject To Operating Lease | Land in Midlothian, VA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,824      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,824      
Buildings 0      
Total 2,824      
Accumulated Depreciation 0      
Real Estate Subject To Operating Lease | Net-lease student housing facility in Laramie, WY        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 15,626      
Initial Cost to Company        
Land 1,966      
Buildings 18,896      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,966      
Buildings 18,896      
Total 20,862      
Accumulated Depreciation $ 2,698      
Life on which Depreciation in Latest Statement of Income is Computed 33 years      
Real Estate Subject To Operating Lease | Office facility in Greenville, SC        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 8,477      
Initial Cost to Company        
Land 562      
Buildings 7,916      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 43      
Gross Amount at which Carried at Close of Period        
Land 562      
Buildings 7,959      
Total 8,521      
Accumulated Depreciation $ 925      
Life on which Depreciation in Latest Statement of Income is Computed 25 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Mendota, IL; Toppenish and Yakima, WA; and Plover, WI        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,444      
Buildings 21,208      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,444      
Buildings 21,208      
Total 22,652      
Accumulated Depreciation $ 2,758      
Life on which Depreciation in Latest Statement of Income is Computed 23 years      
Real Estate Subject To Operating Lease | Industrial facility in Allen, TX and office facility in Sunnyvale, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 10,243      
Initial Cost to Company        
Land 9,297      
Buildings 24,086      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 9,297      
Buildings 24,086      
Total 33,383      
Accumulated Depreciation $ 2,271      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facilities in Hampton, NH        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 8,843      
Initial Cost to Company        
Land 8,990      
Buildings 7,362      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 8,990      
Buildings 7,362      
Total 16,352      
Accumulated Depreciation $ 708      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Industrial facilities located throughout France        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 36,306      
Buildings 5,212      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (9,367)      
Gross Amount at which Carried at Close of Period        
Land 28,115      
Buildings 4,036      
Total 32,151      
Accumulated Depreciation $ 514      
Life on which Depreciation in Latest Statement of Income is Computed 23 years      
Real Estate Subject To Operating Lease | Retail facility in Fairfax, VA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 4,944      
Initial Cost to Company        
Land 3,402      
Buildings 16,353      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,402      
Buildings 16,353      
Total 19,755      
Accumulated Depreciation $ 1,810      
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Retail facility in Lombard, IL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 4,944      
Initial Cost to Company        
Land 5,087      
Buildings 8,578      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 5,087      
Buildings 8,578      
Total 13,665      
Accumulated Depreciation $ 950      
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Warehouse facility in Plainfield, IN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 19,958      
Initial Cost to Company        
Land 1,578      
Buildings 29,415      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,578      
Buildings 29,415      
Total 30,993      
Accumulated Depreciation $ 2,828      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Retail facility in Kennesaw, GA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 3,719      
Initial Cost to Company        
Land 2,849      
Buildings 6,180      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,849      
Buildings 6,180      
Total 9,029      
Accumulated Depreciation $ 684      
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Retail facility in Leawood, KS        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 8,782      
Initial Cost to Company        
Land 1,487      
Buildings 13,417      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,487      
Buildings 13,417      
Total 14,904      
Accumulated Depreciation $ 1,485      
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Office facility in Tolland, CT        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 7,955      
Initial Cost to Company        
Land 1,817      
Buildings 5,709      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 11      
Gross Amount at which Carried at Close of Period        
Land 1,817      
Buildings 5,720      
Total 7,537      
Accumulated Depreciation $ 608      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Lincolnton, NC and Mauldin, SC        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 9,734      
Initial Cost to Company        
Land 1,962      
Buildings 9,247      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,962      
Buildings 9,247      
Total 11,209      
Accumulated Depreciation $ 960      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Retail facilities located throughout Germany        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 257,606      
Initial Cost to Company        
Land 81,109      
Buildings 153,927      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (53,029)      
Gross Amount at which Carried at Close of Period        
Land 62,809      
Buildings 119,198      
Total 182,007      
Accumulated Depreciation 12,254      
Real Estate Subject To Operating Lease | Office facility in Southfield, MI        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 1,726      
Buildings 4,856      
Cost Capitalized Subsequent to Acquisition 89      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,726      
Buildings 4,945      
Total 6,671      
Accumulated Depreciation $ 462      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Office facility in The Woodlands, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 19,882      
Initial Cost to Company        
Land 3,204      
Buildings 24,997      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,204      
Buildings 24,997      
Total 28,201      
Accumulated Depreciation $ 2,314      
Life on which Depreciation in Latest Statement of Income is Computed 32 years      
Real Estate Subject To Operating Lease | Industrial facilities in Shah Alam, Malaysia        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 4,447      
Initial Cost to Company        
Land 0      
Buildings 10,429      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (2,651)      
Gross Amount at which Carried at Close of Period        
Land 0      
Buildings 7,778      
Total 7,778      
Accumulated Depreciation $ 760      
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Lam Luk Ka and Bang Pa-in, Thailand        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 9,717      
Initial Cost to Company        
Land 13,054      
Buildings 19,497      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (2,506)      
Gross Amount at which Carried at Close of Period        
Land 12,049      
Buildings 17,996      
Total 30,045      
Accumulated Depreciation $ 1,684      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Valdosta, GA and Johnson City, TN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 8,015      
Initial Cost to Company        
Land 1,080      
Buildings 14,998      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,080      
Buildings 14,998      
Total 16,078      
Accumulated Depreciation $ 1,645      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Industrial facility in Amherst, NY        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 7,959      
Initial Cost to Company        
Land 674      
Buildings 7,971      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 674      
Buildings 7,971      
Total 8,645      
Accumulated Depreciation $ 1,037      
Life on which Depreciation in Latest Statement of Income is Computed 23 years      
Real Estate Subject To Operating Lease | Industrial and warehouse facilities in Westfield, MA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,922      
Buildings 9,755      
Cost Capitalized Subsequent to Acquisition 5,146      
Increase (Decrease) in Net Investments 9      
Gross Amount at which Carried at Close of Period        
Land 1,922      
Buildings 14,910      
Total 16,832      
Accumulated Depreciation $ 1,126      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Kottka, Finland        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 0      
Buildings 8,546      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,928)      
Gross Amount at which Carried at Close of Period        
Land 0      
Buildings 6,618      
Total 6,618      
Accumulated Depreciation $ 884      
Real Estate Subject To Operating Lease | Warehouse facilities in Kottka, Finland | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 21 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Kottka, Finland | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 23 years      
Real Estate Subject To Operating Lease | Office facility in Bloomington, MN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,942      
Buildings 7,155      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,942      
Buildings 7,155      
Total 10,097      
Accumulated Depreciation $ 736      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Warehouse facility in Gorinchem, Netherlands        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 3,505      
Initial Cost to Company        
Land 1,143      
Buildings 5,648      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,532)      
Gross Amount at which Carried at Close of Period        
Land 885      
Buildings 4,374      
Total 5,259      
Accumulated Depreciation $ 450      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Retail facility in Cresskill, NJ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,366      
Buildings 5,482      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 19      
Gross Amount at which Carried at Close of Period        
Land 2,366      
Buildings 5,501      
Total 7,867      
Accumulated Depreciation $ 515      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Retail facility in Livingston, NJ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 5,186      
Initial Cost to Company        
Land 2,932      
Buildings 2,001      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 14      
Gross Amount at which Carried at Close of Period        
Land 2,932      
Buildings 2,015      
Total 4,947      
Accumulated Depreciation $ 216      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Retail facility in Maplewood, NJ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 845      
Buildings 647      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 4      
Gross Amount at which Carried at Close of Period        
Land 845      
Buildings 651      
Total 1,496      
Accumulated Depreciation $ 70      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Retail facility in Montclair, NJ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,905      
Buildings 1,403      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 6      
Gross Amount at which Carried at Close of Period        
Land 1,905      
Buildings 1,409      
Total 3,314      
Accumulated Depreciation $ 151      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Retail facility in Morristown, NJ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 3,258      
Buildings 8,352      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 26      
Gross Amount at which Carried at Close of Period        
Land 3,258      
Buildings 8,378      
Total 11,636      
Accumulated Depreciation $ 899      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Retail facility in Summit, NJ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,228      
Buildings 1,465      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 8      
Gross Amount at which Carried at Close of Period        
Land 1,228      
Buildings 1,473      
Total 2,701      
Accumulated Depreciation $ 158      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Industrial and office facilities in Bunde, Dransfeld, and Wolfach, Germany        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,789      
Buildings 8,750      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (2,564)      
Gross Amount at which Carried at Close of Period        
Land 2,160      
Buildings 6,815      
Total 8,975      
Accumulated Depreciation $ 816      
Life on which Depreciation in Latest Statement of Income is Computed 24 years      
Real Estate Subject To Operating Lease | Industrial facilities in Georgetown, TX and Woodland, WA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 965      
Buildings 4,113      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 965      
Buildings 4,113      
Total 5,078      
Accumulated Depreciation $ 356      
Real Estate Subject To Operating Lease | Industrial facilities in Georgetown, TX and Woodland, WA | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 33 years      
Real Estate Subject To Operating Lease | Industrial facilities in Georgetown, TX and Woodland, WA | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 35 years      
Real Estate Subject To Operating Lease | Education facilities in Union, NJ; Allentown and Philadelphia, PA; and Grand Prairie, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 5,365      
Buildings 7,845      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 5      
Gross Amount at which Carried at Close of Period        
Land 5,365      
Buildings 7,850      
Total 13,215      
Accumulated Depreciation $ 822      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Industrial facility in Ylämylly, Finland        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 6,554      
Initial Cost to Company        
Land 1,669      
Buildings 6,034      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,738)      
Gross Amount at which Carried at Close of Period        
Land 1,292      
Buildings 4,673      
Total 5,965      
Accumulated Depreciation $ 400      
Life on which Depreciation in Latest Statement of Income is Computed 34 years      
Real Estate Subject To Operating Lease | Industrial facility in Salisbury, NC        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 6,132      
Initial Cost to Company        
Land 1,499      
Buildings 8,185      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,499      
Buildings 8,185      
Total 9,684      
Accumulated Depreciation $ 860      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Industrial facilities in Solon and Twinsburg, OH and office facility in Plymouth, MI        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 3,671      
Initial Cost to Company        
Land 2,831      
Buildings 10,565      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,831      
Buildings 10,565      
Total 13,396      
Accumulated Depreciation $ 1,133      
Real Estate Subject To Operating Lease | Industrial facilities in Solon and Twinsburg, OH and office facility in Plymouth, MI | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Industrial facilities in Solon and Twinsburg, OH and office facility in Plymouth, MI | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Industrial facility in Cambridge, Canada        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,849      
Buildings 7,371      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,562)      
Gross Amount at which Carried at Close of Period        
Land 1,536      
Buildings 6,122      
Total 7,658      
Accumulated Depreciation $ 571      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facilities in Peru, IL; Huber Heights, Lima, and Sheffield, OH; and Lebanon, TN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 11,303      
Initial Cost to Company        
Land 2,962      
Buildings 17,832      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,962      
Buildings 17,832      
Total 20,794      
Accumulated Depreciation $ 1,664      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facility in Ramos Arizpe, Mexico        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,059      
Buildings 2,886      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,059      
Buildings 2,886      
Total 3,945      
Accumulated Depreciation $ 269      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facilities in Salt Lake City, UT        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,783      
Buildings 3,773      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,783      
Buildings 3,773      
Total 6,556      
Accumulated Depreciation $ 352      
Real Estate Subject To Operating Lease | Industrial facilities in Salt Lake City, UT | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facilities in Salt Lake City, UT | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 33 years      
Real Estate Subject To Operating Lease | Net-lease student housing facility in Blairsville, PA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 11,321      
Initial Cost to Company        
Land 1,631      
Buildings 23,163      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,631      
Buildings 23,163      
Total 24,794      
Accumulated Depreciation $ 3,052      
Life on which Depreciation in Latest Statement of Income is Computed 33 years      
Real Estate Subject To Operating Lease | Industrial facility in Nashville, TN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,078      
Buildings 5,619      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,078      
Buildings 5,619      
Total 6,697      
Accumulated Depreciation $ 768      
Life on which Depreciation in Latest Statement of Income is Computed 21 years      
Real Estate Subject To Operating Lease | Office facility in Lafayette, LA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 1,680      
Initial Cost to Company        
Land 1,048      
Buildings 1,507      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,048      
Buildings 1,507      
Total 2,555      
Accumulated Depreciation $ 162      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Atlanta, Doraville, and Rockmart, GA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 6,488      
Buildings 77,192      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 6,488      
Buildings 77,192      
Total 83,680      
Accumulated Depreciation $ 7,889      
Real Estate Subject To Operating Lease | Warehouse facilities in Atlanta, Doraville, and Rockmart, GA | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 23 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Atlanta, Doraville, and Rockmart, GA | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 33 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Flora, MS and Muskogee, OK        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 3,342      
Initial Cost to Company        
Land 554      
Buildings 4,353      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 554      
Buildings 4,353      
Total 4,907      
Accumulated Depreciation $ 388      
Life on which Depreciation in Latest Statement of Income is Computed 33 years      
Real Estate Subject To Operating Lease | Industrial facility in Richmond, MO        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 4,511      
Initial Cost to Company        
Land 2,211      
Buildings 8,505      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,211      
Buildings 8,505      
Total 10,716      
Accumulated Depreciation $ 899      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Warehouse facility in Dallas, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 5,860      
Initial Cost to Company        
Land 468      
Buildings 8,042      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 468      
Buildings 8,042      
Total 8,510      
Accumulated Depreciation $ 994      
Life on which Depreciation in Latest Statement of Income is Computed 24 years      
Real Estate Subject To Operating Lease | Industrial facility in Tuusula, Finland        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 6,173      
Buildings 10,321      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (3,721)      
Gross Amount at which Carried at Close of Period        
Land 4,781      
Buildings 7,992      
Total 12,773      
Accumulated Depreciation $ 914      
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Office facility in Turku, Finland        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 22,030      
Initial Cost to Company        
Land 5,343      
Buildings 34,106      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (8,901)      
Gross Amount at which Carried at Close of Period        
Land 4,137      
Buildings 26,411      
Total 30,548      
Accumulated Depreciation $ 2,767      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Industrial facility in Turku, Finland        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 4,046      
Initial Cost to Company        
Land 1,105      
Buildings 10,243      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (2,546)      
Gross Amount at which Carried at Close of Period        
Land 855      
Buildings 7,947      
Total 8,802      
Accumulated Depreciation $ 836      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Industrial facility in Baraboo, WI        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 917      
Buildings 10,663      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 917      
Buildings 10,663      
Total 11,580      
Accumulated Depreciation $ 2,375      
Life on which Depreciation in Latest Statement of Income is Computed 13 years      
Real Estate Subject To Operating Lease | Warehouse facility in Phoenix, AZ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 18,485      
Initial Cost to Company        
Land 6,747      
Buildings 21,352      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 6,747      
Buildings 21,352      
Total 28,099      
Accumulated Depreciation $ 2,243      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Land in Calgary, Canada        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 3,721      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (631)      
Gross Amount at which Carried at Close of Period        
Land 3,090      
Buildings 0      
Total 3,090      
Accumulated Depreciation 0      
Real Estate Subject To Operating Lease | Industrial facilities in Sandersville, GA; Erwin, TN; and Gainesville, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 2,204      
Initial Cost to Company        
Land 955      
Buildings 4,779      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 955      
Buildings 4,779      
Total 5,734      
Accumulated Depreciation $ 449      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facility in Buffalo Grove, IL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 6,771      
Initial Cost to Company        
Land 1,492      
Buildings 12,233      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,492      
Buildings 12,233      
Total 13,725      
Accumulated Depreciation $ 1,154      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Warehouse facility in Spanish Fork, UT        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 6,842      
Initial Cost to Company        
Land 991      
Buildings 7,901      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 991      
Buildings 7,901      
Total 8,892      
Accumulated Depreciation $ 705      
Life on which Depreciation in Latest Statement of Income is Computed 33 years      
Real Estate Subject To Operating Lease | Industrial facilities in West Jordan, UT and Tacoma, WA; office facility in Eugene, OR; and warehouse facility in Perris, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 8,989      
Buildings 5,435      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 8      
Gross Amount at which Carried at Close of Period        
Land 8,989      
Buildings 5,443      
Total 14,432      
Accumulated Depreciation $ 565      
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Office facility in Carlsbad, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 3,230      
Buildings 5,492      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,230      
Buildings 5,492      
Total 8,722      
Accumulated Depreciation $ 679      
Life on which Depreciation in Latest Statement of Income is Computed 24 years      
Real Estate Subject To Operating Lease | Land in Pensacola, FL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,746      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,746      
Buildings 0      
Total 1,746      
Accumulated Depreciation 0      
Real Estate Subject To Operating Lease | Movie theater in Port St. Lucie, FL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 4,654      
Buildings 2,576      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 4,654      
Buildings 2,576      
Total 7,230      
Accumulated Depreciation $ 275      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Movie theater in Hickory Creek, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,693      
Buildings 3,342      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,693      
Buildings 3,342      
Total 5,035      
Accumulated Depreciation $ 364      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Industrial facility in Nurieux-Volognat, France        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 121      
Buildings 5,328      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,136)      
Gross Amount at which Carried at Close of Period        
Land 93      
Buildings 4,220      
Total 4,313      
Accumulated Depreciation $ 381      
Life on which Depreciation in Latest Statement of Income is Computed 32 years      
Real Estate Subject To Operating Lease | Warehouse facility in Suwanee, GA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 14,981      
Initial Cost to Company        
Land 2,330      
Buildings 8,406      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,330      
Buildings 8,406      
Total 10,736      
Accumulated Depreciation $ 725      
Life on which Depreciation in Latest Statement of Income is Computed 34 years      
Real Estate Subject To Operating Lease | Retail facilities in Wichita, KS and Oklahoma City, OK and warehouse facility in Wichita, KS        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 7,057      
Initial Cost to Company        
Land 1,878      
Buildings 8,579      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,878      
Buildings 8,579      
Total 10,457      
Accumulated Depreciation $ 1,068      
Life on which Depreciation in Latest Statement of Income is Computed 24 years      
Real Estate Subject To Operating Lease | Industrial facilities in Fort Dodge, IA and Menomonie and Oconomowoc, WI        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 8,350      
Initial Cost to Company        
Land 1,403      
Buildings 11,098      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,403      
Buildings 11,098      
Total 12,501      
Accumulated Depreciation $ 1,990      
Life on which Depreciation in Latest Statement of Income is Computed 16 years      
Real Estate Subject To Operating Lease | Industrial facility in Mesa, AZ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 4,528      
Initial Cost to Company        
Land 2,888      
Buildings 4,282      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,888      
Buildings 4,282      
Total 7,170      
Accumulated Depreciation $ 458      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Industrial facility in North Amityville, NY        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 7,446      
Initial Cost to Company        
Land 3,486      
Buildings 11,413      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,486      
Buildings 11,413      
Total 14,899      
Accumulated Depreciation $ 1,280      
Life on which Depreciation in Latest Statement of Income is Computed 26 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Greenville, SC        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 567      
Buildings 10,217      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 15      
Gross Amount at which Carried at Close of Period        
Land 567      
Buildings 10,232      
Total 10,799      
Accumulated Depreciation $ 1,448      
Life on which Depreciation in Latest Statement of Income is Computed 21 years      
Real Estate Subject To Operating Lease | Industrial facility in Fort Collins, CO        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 821      
Buildings 7,236      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 821      
Buildings 7,236      
Total 8,057      
Accumulated Depreciation $ 643      
Life on which Depreciation in Latest Statement of Income is Computed 33 years      
Real Estate Subject To Operating Lease | Land in Elk Grove Village, IL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 1,650      
Initial Cost to Company        
Land 4,037      
Buildings 0      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 4,037      
Buildings 0      
Total 4,037      
Accumulated Depreciation 0      
Real Estate Subject To Operating Lease | Office facility in Washington, MI        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 4,085      
Buildings 7,496      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 4,085      
Buildings 7,496      
Total 11,581      
Accumulated Depreciation $ 667      
Life on which Depreciation in Latest Statement of Income is Computed 33 years      
Real Estate Subject To Operating Lease | Office facility in Houston, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 522      
Buildings 7,448      
Cost Capitalized Subsequent to Acquisition 227      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 522      
Buildings 7,675      
Total 8,197      
Accumulated Depreciation $ 838      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Industrial facilities in Conroe, Odessa, and Weimar, TX and industrial and office facility in Houston, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 6,165      
Initial Cost to Company        
Land 4,049      
Buildings 13,021      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 133      
Gross Amount at which Carried at Close of Period        
Land 4,049      
Buildings 13,154      
Total 17,203      
Accumulated Depreciation $ 2,054      
Real Estate Subject To Operating Lease | Industrial facilities in Conroe, Odessa, and Weimar, TX and industrial and office facility in Houston, TX | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 12 years      
Real Estate Subject To Operating Lease | Industrial facilities in Conroe, Odessa, and Weimar, TX and industrial and office facility in Houston, TX | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 22 years      
Real Estate Subject To Operating Lease | Education facility in Sacramento, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 26,898      
Initial Cost to Company        
Land 0      
Buildings 13,715      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 0      
Buildings 13,715      
Total 13,715      
Accumulated Depreciation $ 1,197      
Life on which Depreciation in Latest Statement of Income is Computed 34 years      
Real Estate Subject To Operating Lease | Industrial facilities in City of Industry, CA; Chelmsford, MA; and Lancaster, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 5,138      
Buildings 8,387      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 43      
Gross Amount at which Carried at Close of Period        
Land 5,138      
Buildings 8,430      
Total 13,568      
Accumulated Depreciation $ 887      
Life on which Depreciation in Latest Statement of Income is Computed 27 years      
Real Estate Subject To Operating Lease | Office facility in Tinton Falls, NJ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 1,958      
Buildings 7,993      
Cost Capitalized Subsequent to Acquisition 13      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,958      
Buildings 8,006      
Total 9,964      
Accumulated Depreciation $ 763      
Life on which Depreciation in Latest Statement of Income is Computed 31 years      
Real Estate Subject To Operating Lease | Industrial facility in Woodland, WA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 707      
Buildings 1,562      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 707      
Buildings 1,562      
Total 2,269      
Accumulated Depreciation $ 129      
Life on which Depreciation in Latest Statement of Income is Computed 35 years      
Real Estate Subject To Operating Lease | Warehouse facilities in Gyál and Herceghalom, Hungary        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 31,993      
Initial Cost to Company        
Land 14,601      
Buildings 21,915      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (8,239)      
Gross Amount at which Carried at Close of Period        
Land 11,306      
Buildings 16,971      
Total 28,277      
Accumulated Depreciation $ 2,423      
Life on which Depreciation in Latest Statement of Income is Computed 21 years      
Real Estate Subject To Operating Lease | Industrial facility in Windsor, CT        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 453      
Buildings 637      
Cost Capitalized Subsequent to Acquisition 3,422      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 453      
Buildings 4,059      
Total 4,512      
Accumulated Depreciation $ 56      
Life on which Depreciation in Latest Statement of Income is Computed 33 years      
Real Estate Subject To Operating Lease | Industrial facility in Aurora, CO        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 2,743      
Initial Cost to Company        
Land 574      
Buildings 3,999      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 574      
Buildings 3,999      
Total 4,573      
Accumulated Depreciation $ 297      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Chandler, AZ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 5,318      
Buildings 27,551      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 5,318      
Buildings 27,551      
Total 32,869      
Accumulated Depreciation $ 2,203      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Warehouse facility in University Park, IL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 7,962      
Buildings 32,756      
Cost Capitalized Subsequent to Acquisition 221      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 7,962      
Buildings 32,977      
Total 40,939      
Accumulated Depreciation $ 2,486      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Stavanger, Norway        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 10,296      
Buildings 91,744      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (28,513)      
Gross Amount at which Carried at Close of Period        
Land 7,490      
Buildings 66,037      
Total 73,527      
Accumulated Depreciation $ 4,037      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Westborough, MA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 3,409      
Buildings 37,914      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,409      
Buildings 37,914      
Total 41,323      
Accumulated Depreciation $ 2,490      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Andover, MA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 3,980      
Buildings 45,120      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,980      
Buildings 45,120      
Total 49,100      
Accumulated Depreciation $ 2,684      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Newport, United Kingdom        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 0      
Buildings 22,587      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (5,293)      
Gross Amount at which Carried at Close of Period        
Land 0      
Buildings 17,294      
Total 17,294      
Accumulated Depreciation $ 981      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Industrial facilities located throughout Australia        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 30,455      
Buildings 94,724      
Cost Capitalized Subsequent to Acquisition 10,007      
Increase (Decrease) in Net Investments (22,044)      
Gross Amount at which Carried at Close of Period        
Land 24,974      
Buildings 88,168      
Total 113,142      
Accumulated Depreciation 11,235      
Real Estate Subject To Operating Lease | Industrial facility in Lewisburg, OH        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 1,627      
Buildings 13,721      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 1,627      
Buildings 13,721      
Total 15,348      
Accumulated Depreciation $ 834      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Industrial facility in Opole, Poland        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,151      
Buildings 21,438      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (3,591)      
Gross Amount at which Carried at Close of Period        
Land 1,824      
Buildings 18,174      
Total 19,998      
Accumulated Depreciation $ 1,094      
Life on which Depreciation in Latest Statement of Income is Computed 38 years      
Real Estate Subject To Operating Lease | Office facilities located throughout Spain        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 51,778      
Buildings 257,624      
Cost Capitalized Subsequent to Acquisition 10      
Increase (Decrease) in Net Investments (42,401)      
Gross Amount at which Carried at Close of Period        
Land 47,382      
Buildings 219,629      
Total 267,011      
Accumulated Depreciation 11,612      
Real Estate Subject To Operating Lease | Retail facilities located throughout the United Kingdom        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 66,319      
Buildings 230,113      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (55,893)      
Gross Amount at which Carried at Close of Period        
Land 53,814      
Buildings 186,725      
Total 240,539      
Accumulated Depreciation $ 11,936      
Real Estate Subject To Operating Lease | Retail facilities located throughout the United Kingdom | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 20 years      
Real Estate Subject To Operating Lease | Retail facilities located throughout the United Kingdom | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Warehouse facility in Rotterdam, Netherlands        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 0      
Buildings 33,935      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (2,417)      
Gross Amount at which Carried at Close of Period        
Land 0      
Buildings 31,518      
Total 31,518      
Accumulated Depreciation $ 1,594      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Retail facility in Bad Fischau, Austria        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,855      
Buildings 18,829      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (472)      
Gross Amount at which Carried at Close of Period        
Land 2,793      
Buildings 18,419      
Total 21,212      
Accumulated Depreciation $ 1,039      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Industrial facility in Oskarshamn, Sweden        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 3,090      
Buildings 18,262      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,886)      
Gross Amount at which Carried at Close of Period        
Land 2,817      
Buildings 16,649      
Total 19,466      
Accumulated Depreciation $ 706      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Sunderland, United Kingdom        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 2,912      
Buildings 30,140      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (6,940)      
Gross Amount at which Carried at Close of Period        
Land 2,300      
Buildings 23,812      
Total 26,112      
Accumulated Depreciation $ 971      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Industrial facilities in Gersthofen and Senden, Germany and Leopoldsdorf, Austria        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 9,449      
Buildings 15,838      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,343)      
Gross Amount at which Carried at Close of Period        
Land 8,947      
Buildings 14,997      
Total 23,944      
Accumulated Depreciation $ 724      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Hotels in Clive, IA; Baton Rouge, LA; St. Louis, MO; Greensboro, NC; Mount Laurel, NJ; and Fort Worth, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 0      
Buildings 49,190      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 0      
Buildings 49,190      
Total 49,190      
Accumulated Depreciation $ 1,760      
Real Estate Subject To Operating Lease | Hotels in Clive, IA; Baton Rouge, LA; St. Louis, MO; Greensboro, NC; Mount Laurel, NJ; and Fort Worth, TX | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 38 years      
Real Estate Subject To Operating Lease | Hotels in Clive, IA; Baton Rouge, LA; St. Louis, MO; Greensboro, NC; Mount Laurel, NJ; and Fort Worth, TX | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Retail facilities in Almere, Amsterdam, Eindhoven, Houten, Nieuwegein, Utrecht, Veghel, and Zwaag, Netherlands        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 5,698      
Buildings 38,130      
Cost Capitalized Subsequent to Acquisition 79      
Increase (Decrease) in Net Investments (817)      
Gross Amount at which Carried at Close of Period        
Land 5,592      
Buildings 37,498      
Total 43,090      
Accumulated Depreciation $ 1,325      
Real Estate Subject To Operating Lease | Retail facilities in Almere, Amsterdam, Eindhoven, Houten, Nieuwegein, Utrecht, Veghel, and Zwaag, Netherlands | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 30 years      
Real Estate Subject To Operating Lease | Retail facilities in Almere, Amsterdam, Eindhoven, Houten, Nieuwegein, Utrecht, Veghel, and Zwaag, Netherlands | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Irvine, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 7,626      
Buildings 16,137      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 7,626      
Buildings 16,137      
Total 23,763      
Accumulated Depreciation $ 435      
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Education facility in Windermere, FL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 5,090      
Buildings 34,721      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 5,090      
Buildings 34,721      
Total 39,811      
Accumulated Depreciation $ 1,234      
Life on which Depreciation in Latest Statement of Income is Computed 38 years      
Real Estate Subject To Operating Lease | Industrial facilities located throughout the United States        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 66,845      
Buildings 87,575      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 66,845      
Buildings 87,575      
Total 154,420      
Accumulated Depreciation 4,891      
Real Estate Subject To Operating Lease | Industrial facilities in North Dumfries, Ottawa, Saint-Eustache, Uxbridge, and Whitchurch-Stouffville, Canada        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 17,155      
Buildings 10,665      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (3,686)      
Gross Amount at which Carried at Close of Period        
Land 14,292      
Buildings 9,842      
Total 24,134      
Accumulated Depreciation 703      
Real Estate Subject To Operating Lease | Education facilities in Coconut Creek, FL and Houston, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 15,550      
Buildings 83,862      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 15,550      
Buildings 83,862      
Total 99,412      
Accumulated Depreciation $ 1,688      
Real Estate Subject To Operating Lease | Education facilities in Coconut Creek, FL and Houston, TX | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 37 years      
Real Estate Subject To Operating Lease | Education facilities in Coconut Creek, FL and Houston, TX | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Real Estate Subject To Operating Lease | Office facility in Southfield, MI and warehouse facilities in London, KY and Gallatin, TN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 3,585      
Buildings 17,254      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,585      
Buildings 17,254      
Total 20,839      
Accumulated Depreciation $ 72      
Real Estate Subject To Operating Lease | Office facility in Southfield, MI and warehouse facilities in London, KY and Gallatin, TN | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 35 years      
Real Estate Subject To Operating Lease | Office facility in Southfield, MI and warehouse facilities in London, KY and Gallatin, TN | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 36 years      
Real Estate Subject To Operating Lease | Industrial facilities in Brampton, Toronto, and Vaughan, Canada        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 28,759      
Buildings 13,998      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 28,759      
Buildings 13,998      
Total 42,757      
Accumulated Depreciation $ 70      
Real Estate Subject To Operating Lease | Industrial facilities in Brampton, Toronto, and Vaughan, Canada | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Industrial facilities in Brampton, Toronto, and Vaughan, Canada | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 35 years      
Real Estate Subject To Operating Lease | Industrial facilities in Queretaro and San Juan del Rio, Mexico        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 0      
Initial Cost to Company        
Land 5,152      
Buildings 12,614      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 13      
Gross Amount at which Carried at Close of Period        
Land 5,156      
Buildings 12,623      
Total 17,779      
Accumulated Depreciation $ 30      
Real Estate Subject To Operating Lease | Industrial facilities in Queretaro and San Juan del Rio, Mexico | Minimum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 28 years      
Real Estate Subject To Operating Lease | Industrial facilities in Queretaro and San Juan del Rio, Mexico | Maximum        
Gross Amount at which Carried at Close of Period        
Life on which Depreciation in Latest Statement of Income is Computed 40 years      
Direct Financing Method        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 95,062      
Initial Cost to Company        
Land 95,070      
Buildings 726,945      
Cost Capitalized Subsequent to Acquisition 9      
Increase (Decrease) in Net Investments (137,965)      
Gross Amount at which Carried at Close of Period        
Total 684,059      
Direct Financing Method | Retail facilities in Jacksonville and Panama City, Florida; Baton Rouge and Hammond, Louisiana; St. Peters, Missouri; and Kannapolis, Morgantown, and Shelby, North Carolina        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 0      
Buildings 16,416      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (13,903)      
Gross Amount at which Carried at Close of Period        
Total 2,513      
Direct Financing Method | Industrial facilities in Glendora, CA and Romulus, MI        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 454      
Buildings 13,251      
Cost Capitalized Subsequent to Acquisition 9      
Increase (Decrease) in Net Investments (3,907)      
Gross Amount at which Carried at Close of Period        
Total 9,807      
Direct Financing Method | Industrial facilities in Irving and Houston, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 0      
Buildings 27,599      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (3,976)      
Gross Amount at which Carried at Close of Period        
Total 23,623      
Direct Financing Method | Retail facility in Freehold, NJ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 7,897      
Initial Cost to Company        
Land 0      
Buildings 17,067      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (146)      
Gross Amount at which Carried at Close of Period        
Total 16,921      
Direct Financing Method | Office facilities in Corpus Christi, Odessa, San Marcos, and Waco, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 3,838      
Initial Cost to Company        
Land 2,089      
Buildings 14,211      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (455)      
Gross Amount at which Carried at Close of Period        
Total 15,845      
Direct Financing Method | Retail facilities in Arnstadt, Borken, Bünde, Dorsten, Duisburg, Freiberg, Gütersloh, Leimbach-Kaiserro, Monheim, Oberhausen, Osnabrück, Rodewisch, Sankt Augustin, Schmalkalden, Stendal, and Wuppertal Germany        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 28,734      
Buildings 145,854      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (31,861)      
Gross Amount at which Carried at Close of Period        
Total 142,727      
Direct Financing Method | Warehouse facility in Brierley Hill, United Kingdom        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 2,147      
Buildings 12,357      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (2,791)      
Gross Amount at which Carried at Close of Period        
Total 11,713      
Direct Financing Method | Industrial and warehouse facility in Mesquite, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 6,148      
Initial Cost to Company        
Land 2,851      
Buildings 15,899      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,468)      
Gross Amount at which Carried at Close of Period        
Total 17,282      
Direct Financing Method | Industrial facility in Rochester, MN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 3,645      
Initial Cost to Company        
Land 881      
Buildings 17,039      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,666)      
Gross Amount at which Carried at Close of Period        
Total 16,254      
Direct Financing Method | Office facility in Irvine, CA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 6,287      
Initial Cost to Company        
Land 0      
Buildings 17,027      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (823)      
Gross Amount at which Carried at Close of Period        
Total 16,204      
Direct Financing Method | Industrial facility in Brownwood, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 722      
Buildings 6,268      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1)      
Gross Amount at which Carried at Close of Period        
Total 6,989      
Direct Financing Method | Office facility in Scottsdale, AZ        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 19,926      
Initial Cost to Company        
Land 0      
Buildings 43,570      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (494)      
Gross Amount at which Carried at Close of Period        
Total 43,076      
Direct Financing Method | Retail facilities in El Paso and Fabens, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 4,777      
Buildings 17,823      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (17)      
Gross Amount at which Carried at Close of Period        
Total 22,583      
Direct Financing Method | Industrial facility in Dallas, TX        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 3,190      
Buildings 10,010      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 62      
Gross Amount at which Carried at Close of Period        
Total 13,262      
Direct Financing Method | Industrial facility in Eagan, MN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 6,938      
Initial Cost to Company        
Land 0      
Buildings 11,548      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (141)      
Gross Amount at which Carried at Close of Period        
Total 11,407      
Direct Financing Method | Industrial facilities in Albemarle and Old Fort, NC; Holmesville, OH; and Springfield, TN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 8,677      
Initial Cost to Company        
Land 6,542      
Buildings 20,668      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,360)      
Gross Amount at which Carried at Close of Period        
Total 25,850      
Direct Financing Method | Movie theater in Midlothian, VA        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 0      
Buildings 16,546      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 166      
Gross Amount at which Carried at Close of Period        
Total 16,712      
Direct Financing Method | Industrial facilities located throughout France        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 0      
Buildings 27,270      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (5,470)      
Gross Amount at which Carried at Close of Period        
Total 21,800      
Direct Financing Method | Retail facility in Gronau, Germany        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 5,503      
Initial Cost to Company        
Land 281      
Buildings 4,401      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,056)      
Gross Amount at which Carried at Close of Period        
Total 3,626      
Direct Financing Method | Industrial and office facility in Marktheidenfeld, Germany        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 1,629      
Buildings 22,396      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (6,194)      
Gross Amount at which Carried at Close of Period        
Total 17,831      
Direct Financing Method | Industrial and warehouse facility in Newbridge, United Kingdom        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 9,748      
Initial Cost to Company        
Land 6,851      
Buildings 22,868      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (8,140)      
Gross Amount at which Carried at Close of Period        
Total 21,579      
Direct Financing Method | Education facility in Mooresville, NC        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 3,359      
Initial Cost to Company        
Land 1,795      
Buildings 15,955      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 2      
Gross Amount at which Carried at Close of Period        
Total 17,752      
Direct Financing Method | Industrial facility in Mount Carmel, IL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 135      
Buildings 3,265      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (34)      
Gross Amount at which Carried at Close of Period        
Total 3,366      
Direct Financing Method | Retail facility in Vantaa, Finland        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 5,291      
Buildings 15,522      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (4,695)      
Gross Amount at which Carried at Close of Period        
Total 16,118      
Direct Financing Method | Retail facility in Linköping, Sweden        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 1,484      
Buildings 9,402      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (3,083)      
Gross Amount at which Carried at Close of Period        
Total 7,803      
Direct Financing Method | Industrial facility in Calgary, Canada        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 0      
Buildings 7,076      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (1,195)      
Gross Amount at which Carried at Close of Period        
Total 5,881      
Direct Financing Method | Industrial facilities in Kearney, MO; Fair Bluff, NC; York, NE; Walbridge, OH; Middlesex Township, PA; Rocky Mount, VA; and Martinsburg, WV        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 9,880      
Initial Cost to Company        
Land 5,780      
Buildings 40,860      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (160)      
Gross Amount at which Carried at Close of Period        
Total 46,480      
Direct Financing Method | Industrial and office facility in Leeds, United Kingdom        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 2,712      
Buildings 16,501      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (17,569)      
Gross Amount at which Carried at Close of Period        
Total 1,644      
Direct Financing Method | Movie theater in Pensacola, FL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 0      
Buildings 13,034      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (492)      
Gross Amount at which Carried at Close of Period        
Total 12,542      
Direct Financing Method | Industrial facility in Monheim, Germany        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 2,939      
Buildings 7,379      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (2,452)      
Gross Amount at which Carried at Close of Period        
Total 7,866      
Direct Financing Method | Industrial facility in Göppingen, Germany        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 10,717      
Buildings 60,120      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (16,978)      
Gross Amount at which Carried at Close of Period        
Total 53,859      
Direct Financing Method | Warehouse facility in Elk Grove Village, IL        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 3,216      
Initial Cost to Company        
Land 0      
Buildings 7,863      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments 1      
Gross Amount at which Carried at Close of Period        
Total 7,864      
Direct Financing Method | Industrial facility in Sankt Ingbert, Germany        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 2,786      
Buildings 26,902      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (7,082)      
Gross Amount at which Carried at Close of Period        
Total 22,606      
Direct Financing Method | Industrial facility in McKees Hill, Australia        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 283      
Buildings 2,978      
Cost Capitalized Subsequent to Acquisition 0      
Increase (Decrease) in Net Investments (587)      
Gross Amount at which Carried at Close of Period        
Total 2,674      
Operating Real Estate        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 26,486      
Initial Cost to Company        
Land 5,930      
Buildings 65,720      
Cost Capitalized Subsequent to Acquisition 2,792      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 6,041      
Buildings 67,617      
Total 81,711 82,749 84,885 6,024
Accumulated Depreciation 12,143 $ 8,794 $ 4,866 $ 882
Real Estate And Accumulated Depreciation Initial Cost Of Personal Property 7,269      
Real Estate And Accumulated Depreciation Carrying Amount Of Personal Property 8,053      
Operating Real Estate | Hotel in Bloomington, MN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances 0      
Initial Cost to Company        
Land 3,810      
Buildings 29,126      
Cost Capitalized Subsequent to Acquisition 1,834      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 3,874      
Buildings 30,313      
Total 38,392      
Accumulated Depreciation 4,928      
Real Estate And Accumulated Depreciation Initial Cost Of Personal Property 3,622      
Real Estate And Accumulated Depreciation Carrying Amount Of Personal Property $ 4,205      
Life on which Depreciation in Latest Statement of Income is Computed 34 years      
Operating Real Estate | Hotel in Memphis, TN        
SEC Schedule III, Real Estate and Accumulated Depreciation        
Encumbrances $ 26,486      
Initial Cost to Company        
Land 2,120      
Buildings 36,594      
Cost Capitalized Subsequent to Acquisition 958      
Increase (Decrease) in Net Investments 0      
Gross Amount at which Carried at Close of Period        
Land 2,167      
Buildings 37,304      
Total 43,319      
Accumulated Depreciation 7,215      
Real Estate And Accumulated Depreciation Initial Cost Of Personal Property 3,647      
Real Estate And Accumulated Depreciation Carrying Amount Of Personal Property $ 3,848      
Life on which Depreciation in Latest Statement of Income is Computed 22 years