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Schedule III - Real Estate and Accumulated Depreciation - Section 8 (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 $ 2,071,038      
Land 2,907,509      
Buildings, Fixtures and Improvements 10,769,845      
Costs Capitalized Subsequent to Acquisition (99,654)      
Gross Amount Carried at December 31, 2017 13,577,700 $ 13,539,921 $ 14,566,343 $ 15,857,507
Accumulated Depreciation (2,217,108) $ (1,766,006) $ (1,331,751) $ (775,050)
Dollar General [Member] | Soso, MS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 116      
Buildings, Fixtures and Improvements 658      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 774      
Accumulated Depreciation (198)      
Dollar General [Member] | Stonewall, MS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 116      
Buildings, Fixtures and Improvements 655      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 771      
Accumulated Depreciation (192)      
Dollar General [Member] | Stringer, MS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 116      
Buildings, Fixtures and Improvements 655      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 771      
Accumulated Depreciation (193)      
Dollar General [Member] | Walnut Grove, MS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 71      
Buildings, Fixtures and Improvements 641      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 712      
Accumulated Depreciation (199)      
Dollar General [Member] | Edenton, MS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 240      
Buildings, Fixtures and Improvements 1,025      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,265      
Accumulated Depreciation (225)      
Dollar General [Member] | Fayetteville, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 216      
Buildings, Fixtures and Improvements 647      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 863      
Accumulated Depreciation (198)      
Dollar General [Member] | Hendersonville, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 360      
Buildings, Fixtures and Improvements 1,034      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,394      
Accumulated Depreciation (224)      
Dollar General [Member] | Hickory, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 89      
Buildings, Fixtures and Improvements 804      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 893      
Accumulated Depreciation (234)      
Dollar General [Member] | Morganton, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 472      
Buildings, Fixtures and Improvements 1,108      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,580      
Accumulated Depreciation (243)      
Dollar General [Member] | Ocean Isle Beach, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 400      
Land 341      
Buildings, Fixtures and Improvements 633      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 974      
Accumulated Depreciation (193)      
Dollar General [Member] | Tryon, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 139      
Buildings, Fixtures and Improvements 789      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 928      
Accumulated Depreciation (230)      
Dollar General [Member] | Vass, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 226      
Buildings, Fixtures and Improvements 528      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 754      
Accumulated Depreciation (161)      
Dollar General [Member] | Farmington, NM [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 269      
Buildings, Fixtures and Improvements 807      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,076      
Accumulated Depreciation (233)      
Dollar General [Member] | Farmington, NM 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 224      
Buildings, Fixtures and Improvements 898      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,122      
Accumulated Depreciation (225)      
Dollar General [Member] | Modena, NY [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 249      
Buildings, Fixtures and Improvements 996      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,245      
Accumulated Depreciation (235)      
Dollar General [Member] | Fairfield, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 131      
Buildings, Fixtures and Improvements 1,272      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,403      
Accumulated Depreciation (262)      
Dollar General [Member] | Forest, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 76      
Buildings, Fixtures and Improvements 681      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 757      
Accumulated Depreciation (214)      
Dollar General [Member] | Gratis, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 161      
Buildings, Fixtures and Improvements 1,042      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,203      
Accumulated Depreciation (229)      
Dollar General [Member] | Greenfield, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 400      
Land 110      
Buildings, Fixtures and Improvements 986      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,096      
Accumulated Depreciation (301)      
Dollar General [Member] | Hicksville, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 156      
Buildings, Fixtures and Improvements 1,490      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,646      
Accumulated Depreciation (309)      
Dollar General [Member] | Loudonville, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 236      
Buildings, Fixtures and Improvements 945      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,181      
Accumulated Depreciation (280)      
Dollar General [Member] | Lowell, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 157      
Buildings, Fixtures and Improvements 1,114      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,271      
Accumulated Depreciation (232)      
Dollar General [Member] | Lucasville, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 223      
Buildings, Fixtures and Improvements 893      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,116      
Accumulated Depreciation (267)      
Dollar General [Member] | New Charlisle, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 215      
Buildings, Fixtures and Improvements 860      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,075      
Accumulated Depreciation (253)      
Dollar General [Member] | New Matamoras, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 123      
Buildings, Fixtures and Improvements 696      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 819      
Accumulated Depreciation (219)      
Dollar General [Member] | Payne, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 81      
Buildings, Fixtures and Improvements 729      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 810      
Accumulated Depreciation (230)      
Dollar General [Member] | Pemberville, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 146      
Buildings, Fixtures and Improvements 1,059      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,205      
Accumulated Depreciation (224)      
Dollar General [Member] | Pleasant City, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 131      
Buildings, Fixtures and Improvements 740      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 871      
Accumulated Depreciation (233)      
Dollar General [Member] | Powhatan Point, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 138      
Buildings, Fixtures and Improvements 784      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 922      
Accumulated Depreciation (196)      
Dollar General [Member] | Sandusky, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 210      
Buildings, Fixtures and Improvements 1,700      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,910      
Accumulated Depreciation (353)      
Dollar General [Member] | Toledo, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 252      
Buildings, Fixtures and Improvements 1,149      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,401      
Accumulated Depreciation (241)      
Dollar General [Member] | Wheelersburg, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 395      
Buildings, Fixtures and Improvements 1,132      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,527      
Accumulated Depreciation (247)      
Dollar General [Member] | Broken Bow, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 331      
Buildings, Fixtures and Improvements 1,325      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,656      
Accumulated Depreciation (242)      
Dollar General [Member] | Calera, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 136      
Buildings, Fixtures and Improvements 770      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 906      
Accumulated Depreciation (224)      
Dollar General [Member] | Commerce, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 38      
Buildings, Fixtures and Improvements 341      
Costs Capitalized Subsequent to Acquisition (6)      
Gross Amount Carried at December 31, 2017 373      
Accumulated Depreciation (106)      
Dollar General [Member] | Hartshorne, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 100      
Buildings, Fixtures and Improvements 898      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 998      
Accumulated Depreciation (262)      
Dollar General [Member] | Lexington, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 85      
Buildings, Fixtures and Improvements 761      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 846      
Accumulated Depreciation (222)      
Dollar General [Member] | Maud, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 76      
Buildings, Fixtures and Improvements 688      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 764      
Accumulated Depreciation (200)      
Dollar General [Member] | Maysville, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 41      
Buildings, Fixtures and Improvements 785      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 826      
Accumulated Depreciation (229)      
Dollar General [Member] | Ponca City, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 145      
Buildings, Fixtures and Improvements 1,161      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,306      
Accumulated Depreciation (240)      
Dollar General [Member] | Rush Spring, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 87      
Buildings, Fixtures and Improvements 779      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 866      
Accumulated Depreciation (227)      
Dollar General [Member] | Sand Springs, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 143      
Buildings, Fixtures and Improvements 811      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 954      
Accumulated Depreciation (196)      
Dollar General [Member] | Sand Springs, OK 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 43      
Buildings, Fixtures and Improvements 819      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 862      
Accumulated Depreciation (197)      
Dollar General [Member] | Sand Springs, OK 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 198      
Buildings, Fixtures and Improvements 791      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 989      
Accumulated Depreciation (191)      
Dollar General [Member] | Tahlequah, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 123      
Buildings, Fixtures and Improvements 1,101      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,224      
Accumulated Depreciation (227)      
Dollar General [Member] | Wagoner, OK [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 31      
Buildings, Fixtures and Improvements 1,076      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,107      
Accumulated Depreciation (223)      
Dollar General [Member] | Pleasantville, PA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 163      
Buildings, Fixtures and Improvements 941      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,104      
Accumulated Depreciation (201)      
Dollar General [Member] | Sykesville, PA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 68      
Buildings, Fixtures and Improvements 1,075      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,143      
Accumulated Depreciation (229)      
Dollar General [Member] | Wattsburg, PA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 96      
Buildings, Fixtures and Improvements 1,031      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,127      
Accumulated Depreciation (220)      
Dollar General [Member] | Holly Hill, SC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 1,983      
Land 259      
Buildings, Fixtures and Improvements 2,333      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 2,592      
Accumulated Depreciation (628)      
Dollar General [Member] | West Union, SC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 46      
Buildings, Fixtures and Improvements 868      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 914      
Accumulated Depreciation (217)      
Dollar General [Member] | Doyle, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 75      
Buildings, Fixtures and Improvements 679      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 754      
Accumulated Depreciation (198)      
Dollar General [Member] | Manchester, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 114      
Buildings, Fixtures and Improvements 646      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 760      
Accumulated Depreciation (190)      
Dollar General [Member] | Mcminnville, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 120      
Buildings, Fixtures and Improvements 679      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 799      
Accumulated Depreciation (199)      
Dollar General [Member] | Pleasant Hill, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 39      
Buildings, Fixtures and Improvements 747      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 786      
Accumulated Depreciation (232)      
Dollar General [Member] | Adkins, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 157      
Buildings, Fixtures and Improvements 889      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,046      
Accumulated Depreciation (251)      
Dollar General [Member] | Amarillo, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 97      
Buildings, Fixtures and Improvements 877      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 974      
Accumulated Depreciation (215)      
Dollar General [Member] | Amarillo, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 153      
Buildings, Fixtures and Improvements 866      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,019      
Accumulated Depreciation (213)      
Dollar General [Member] | Amarillo, TX 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 198      
Buildings, Fixtures and Improvements 794      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 992      
Accumulated Depreciation (199)      
Dollar General [Member] | Avinger, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 44      
Buildings, Fixtures and Improvements 830      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 874      
Accumulated Depreciation (204)      
Dollar General [Member] | Beeville, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 90      
Buildings, Fixtures and Improvements 810      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 900      
Accumulated Depreciation (230)      
Dollar General [Member] | Belton, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 89      
Buildings, Fixtures and Improvements 804      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 893      
Accumulated Depreciation (220)      
Dollar General [Member] | Belton, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 145      
Buildings, Fixtures and Improvements 821      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 966      
Accumulated Depreciation (237)      
Dollar General [Member] | Blessing, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 83      
Buildings, Fixtures and Improvements 745      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 828      
Accumulated Depreciation (210)      
Dollar General [Member] | Boling, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 92      
Buildings, Fixtures and Improvements 831      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 923      
Accumulated Depreciation (204)      
Dollar General [Member] | Brookeland, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 93      
Buildings, Fixtures and Improvements 840      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 933      
Accumulated Depreciation (207)      
Dollar General [Member] | Bryan, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 148      
Buildings, Fixtures and Improvements 840      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 988      
Accumulated Depreciation (243)      
Dollar General [Member] | Bryan, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 193      
Buildings, Fixtures and Improvements 772      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 965      
Accumulated Depreciation (223)      
Dollar General [Member] | Bryan, TX 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 185      
Buildings, Fixtures and Improvements 740      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 925      
Accumulated Depreciation (216)      
Dollar General [Member] | Buchanan Dam, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 145      
Buildings, Fixtures and Improvements 820      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 965      
Accumulated Depreciation (237)      
Dollar General [Member] | Canyon Lake, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 149      
Buildings, Fixtures and Improvements 843      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 992      
Accumulated Depreciation (242)      
Dollar General [Member] | Cedar Creek, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 291      
Buildings, Fixtures and Improvements 680      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 971      
Accumulated Depreciation (193)      
Dollar General [Member] | Como, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 76      
Buildings, Fixtures and Improvements 683      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 759      
Accumulated Depreciation (205)      
Dollar General [Member] | Corpus Christi, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 270      
Buildings, Fixtures and Improvements 809      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,079      
Accumulated Depreciation (228)      
Dollar General [Member] | Diana, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 186      
Buildings, Fixtures and Improvements 743      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 929      
Accumulated Depreciation (183)      
Dollar General [Member] | Donna, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 136      
Buildings, Fixtures and Improvements 768      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 904      
Accumulated Depreciation (222)      
Dollar General [Member] | Donna, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 200      
Buildings, Fixtures and Improvements 799      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 999      
Accumulated Depreciation (229)      
Dollar General [Member] | Donna, TX 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 145      
Buildings, Fixtures and Improvements 820      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 965      
Accumulated Depreciation (228)      
Dollar General [Member] | Edinburg, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 136      
Buildings, Fixtures and Improvements 769      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 905      
Accumulated Depreciation (222)      
Dollar General [Member] | Edinburg, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 102      
Buildings, Fixtures and Improvements 914      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,016      
Accumulated Depreciation (229)      
Dollar General [Member] | Elmendorf, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 94      
Buildings, Fixtures and Improvements 847      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 941      
Accumulated Depreciation (243)      
Dollar General [Member] | Ganado, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 95      
Buildings, Fixtures and Improvements 857      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 952      
Accumulated Depreciation (211)      
Dollar General [Member] | Gladewater, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 184      
Buildings, Fixtures and Improvements 736      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 920      
Accumulated Depreciation (214)      
Dollar General [Member] | Gordonville, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 38      
Buildings, Fixtures and Improvements 717      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 755      
Accumulated Depreciation (216)      
Dollar General [Member] | Kyle, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 132      
Buildings, Fixtures and Improvements 747      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 879      
Accumulated Depreciation (216)      
Dollar General [Member] | Kyle, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 101      
Buildings, Fixtures and Improvements 910      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,011      
Accumulated Depreciation (207)      
Dollar General [Member] | La Marque, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 102      
Buildings, Fixtures and Improvements 917      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,019      
Accumulated Depreciation (267)      
Dollar General [Member] | Lacy Lakeview, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 146      
Buildings, Fixtures and Improvements 826      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 972      
Accumulated Depreciation (235)      
Dollar General [Member] | Laredo, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 253      
Buildings, Fixtures and Improvements 758      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,011      
Accumulated Depreciation (223)      
Dollar General [Member] | Littleriver Acdmy, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 122      
Buildings, Fixtures and Improvements 693      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 815      
Accumulated Depreciation (209)      
Dollar General [Member] | Lubbock, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 267      
Buildings, Fixtures and Improvements 801      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,068      
Accumulated Depreciation (233)      
Dollar General [Member] | Lubbock, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 199      
Buildings, Fixtures and Improvements 796      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 995      
Accumulated Depreciation (196)      
Dollar General [Member] | Lubbock, TX 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 148      
Buildings, Fixtures and Improvements 841      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 989      
Accumulated Depreciation (219)      
Dollar General [Member] | Lubbock, TX 4 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 41      
Buildings, Fixtures and Improvements 825      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 866      
Accumulated Depreciation (180)      
Dollar General [Member] | Lyford, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 80      
Buildings, Fixtures and Improvements 724      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 804      
Accumulated Depreciation (225)      
Dollar General [Member] | Lytle, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 243      
Buildings, Fixtures and Improvements 971      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,214      
Accumulated Depreciation (230)      
Dollar General [Member] | Mercedes, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 215      
Buildings, Fixtures and Improvements 859      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,074      
Accumulated Depreciation (211)      
Dollar General [Member] | Mission, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 158      
Buildings, Fixtures and Improvements 894      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,052      
Accumulated Depreciation (241)      
Dollar General [Member] | Moody, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 41      
Buildings, Fixtures and Improvements 781      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 822      
Accumulated Depreciation (199)      
Dollar General [Member] | Mount Pleasant, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 214      
Buildings, Fixtures and Improvements 858      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,072      
Accumulated Depreciation (250)      
Dollar General [Member] | New Braunfels, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 205      
Buildings, Fixtures and Improvements 818      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,023      
Accumulated Depreciation (238)      
Dollar General [Member] | New Braunfels, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 95      
Buildings, Fixtures and Improvements 855      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 950      
Accumulated Depreciation (234)      
Dollar General [Member] | New Braunfels, TX 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 156      
Buildings, Fixtures and Improvements 883      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,039      
Accumulated Depreciation (209)      
Dollar General [Member] | Orange, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 277      
Buildings, Fixtures and Improvements 1,150      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,427      
Accumulated Depreciation (230)      
Dollar General [Member] | Poteet, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 400      
Land 96      
Buildings, Fixtures and Improvements 864      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 960      
Accumulated Depreciation (272)      
Dollar General [Member] | Presidio, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 72      
Buildings, Fixtures and Improvements 1,370      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,442      
Accumulated Depreciation (369)      
Dollar General [Member] | Progreso, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 400      
Land 169      
Buildings, Fixtures and Improvements 957      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,126      
Accumulated Depreciation (301)      
Dollar General [Member] | Rio Grande City, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 137      
Buildings, Fixtures and Improvements 779      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 916      
Accumulated Depreciation (245)      
Dollar General [Member] | Rio Grande City, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 163      
Buildings, Fixtures and Improvements 652      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 815      
Accumulated Depreciation (199)      
Dollar General [Member] | Roma, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 500      
Land 253      
Buildings, Fixtures and Improvements 1,010      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,263      
Accumulated Depreciation (318)      
Dollar General [Member] | San Antonio, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 252      
Buildings, Fixtures and Improvements 756      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,008      
Accumulated Depreciation (217)      
Dollar General [Member] | San Antonio, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 222      
Buildings, Fixtures and Improvements 888      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,110      
Accumulated Depreciation (255)      
Dollar General [Member] | San Antonio, TX 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 163      
Buildings, Fixtures and Improvements 926      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,089      
Accumulated Depreciation (254)      
Dollar General [Member] | San Antonio, TX 4 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 271      
Buildings, Fixtures and Improvements 812      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,083      
Accumulated Depreciation (211)      
Dollar General [Member] | San Antonio, TX 5 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 239      
Buildings, Fixtures and Improvements 956      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,195      
Accumulated Depreciation (257)      
Dollar General [Member] | San Antonio, TX 6 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 220      
Buildings, Fixtures and Improvements 880      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,100      
Accumulated Depreciation (220)      
Dollar General [Member] | San Antonio, TX 7 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 333      
Buildings, Fixtures and Improvements 776      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,109      
Accumulated Depreciation (191)      
Dollar General [Member] | San Benito, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 202      
Buildings, Fixtures and Improvements 807      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,009      
Accumulated Depreciation (198)      
Dollar General [Member] | San Juan, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 169      
Buildings, Fixtures and Improvements 956      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,125      
Accumulated Depreciation (222)      
Dollar General [Member] | San Leon, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 87      
Buildings, Fixtures and Improvements 786      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 873      
Accumulated Depreciation (227)      
Dollar General [Member] | Silsbee, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 43      
Buildings, Fixtures and Improvements 810      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 853      
Accumulated Depreciation (238)      
Dollar General [Member] | Skidmore, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 90      
Buildings, Fixtures and Improvements 811      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 901      
Accumulated Depreciation (222)      
Dollar General [Member] | Sullivan City, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 165      
Buildings, Fixtures and Improvements 876      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,041      
Accumulated Depreciation (191)      
Dollar General [Member] | Texarkana, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 136      
Buildings, Fixtures and Improvements 772      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 908      
Accumulated Depreciation (182)      
Dollar General [Member] | Troy, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 93      
Buildings, Fixtures and Improvements 841      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 934      
Accumulated Depreciation (243)      
Dollar General [Member] | Tyler, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 219      
Buildings, Fixtures and Improvements 875      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,094      
Accumulated Depreciation (255)      
Dollar General [Member] | Tyler, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 602      
Buildings, Fixtures and Improvements 956      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,558      
Accumulated Depreciation (212)      
Dollar General [Member] | Victoria, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 91      
Buildings, Fixtures and Improvements 817      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 908      
Accumulated Depreciation (228)      
Dollar General [Member] | Vidor, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 0      
Buildings, Fixtures and Improvements 1,182      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,182      
Accumulated Depreciation (237)      
Dollar General [Member] | Waco, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 192      
Buildings, Fixtures and Improvements 767      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 959      
Accumulated Depreciation (223)      
Dollar General [Member] | Weslaco, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 215      
Buildings, Fixtures and Improvements 862      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,077      
Accumulated Depreciation (249)      
Dollar General [Member] | Weslaco, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 205      
Buildings, Fixtures and Improvements 822      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,027      
Accumulated Depreciation (194)      
Dollar General [Member] | Burkeville, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 160      
Buildings, Fixtures and Improvements 906      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,066      
Accumulated Depreciation (270)      
Dollar General [Member] | Danville, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 155      
Buildings, Fixtures and Improvements 621      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 776      
Accumulated Depreciation (190)      
Dollar General [Member] | Hopewell, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 500      
Land 584      
Buildings, Fixtures and Improvements 713      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,297      
Accumulated Depreciation (218)      
Dollar General [Member] | Hot Springs, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 400      
Land 283      
Buildings, Fixtures and Improvements 661      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 944      
Accumulated Depreciation (202)      
Dollar General [Member] | Richmond, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 400      
Land 242      
Buildings, Fixtures and Improvements 726      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 968      
Accumulated Depreciation (222)      
Dollar General [Member] | Mellen, WI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 79      
Buildings, Fixtures and Improvements 711      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 790      
Accumulated Depreciation (221)      
Dollar General [Member] | Minong, WI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 38      
Buildings, Fixtures and Improvements 727      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 765      
Accumulated Depreciation (225)      
Dollar General [Member] | Solon Springs, WI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 300      
Land 76      
Buildings, Fixtures and Improvements 685      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 761      
Accumulated Depreciation (212)      
Dollar General [Member] | Chelyan, WV [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 273      
Buildings, Fixtures and Improvements 1,092      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,365      
Accumulated Depreciation (263)      
Dollar General [Member] | Cowen, WV [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 196      
Buildings, Fixtures and Improvements 783      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 979      
Accumulated Depreciation (218)      
Dollar General [Member] | Elkview, WV [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 274      
Buildings, Fixtures and Improvements 823      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,097      
Accumulated Depreciation (202)      
Dollar General [Member] | Mcmechen, WV [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 91      
Buildings, Fixtures and Improvements 819      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 910      
Accumulated Depreciation (228)      
Dollar General [Member] | Millwood, WV [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 98      
Buildings, Fixtures and Improvements 881      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 979      
Accumulated Depreciation (221)      
Dollar General [Member] | Oceana, WV [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 317      
Buildings, Fixtures and Improvements 1,023      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,340      
Accumulated Depreciation (146)      
Dollar General [Member] | St. Louis, MO [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 372      
Buildings, Fixtures and Improvements 692      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,064      
Accumulated Depreciation (202)      
Dollar General [Member] | Little Rock, AR [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 73      
Buildings, Fixtures and Improvements 412      
Costs Capitalized Subsequent to Acquisition 13      
Gross Amount Carried at December 31, 2017 498      
Accumulated Depreciation (103)      
Dollar Tree [Member] | Huntsville, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 476      
Buildings, Fixtures and Improvements 1,092      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,568      
Accumulated Depreciation (153)      
Dollar Tree [Member] | Beverly Hills, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 409      
Buildings, Fixtures and Improvements 965      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,374      
Accumulated Depreciation (141)      
Dollar Tree [Member] | Bonita Springs, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 672      
Buildings, Fixtures and Improvements 918      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,590      
Accumulated Depreciation (207)      
Dollar Tree [Member] | Chiefland, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 322      
Buildings, Fixtures and Improvements 1,123      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,445      
Accumulated Depreciation (239)      
Dollar Tree [Member] | Ormond Beach, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 573      
Buildings, Fixtures and Improvements 860      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,433      
Accumulated Depreciation (219)      
Dollar Tree [Member] | Oviedo, FL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 469      
Buildings, Fixtures and Improvements 848      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,317      
Accumulated Depreciation (186)      
Dollar Tree [Member] | Des Moines, IA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 152      
Buildings, Fixtures and Improvements 863      
Costs Capitalized Subsequent to Acquisition 6      
Gross Amount Carried at December 31, 2017 1,021      
Accumulated Depreciation (213)      
Dollar Tree [Member] | Lombard, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 1,008      
Buildings, Fixtures and Improvements 543      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,551      
Accumulated Depreciation (123)      
Dollar Tree [Member] | Baton Rouge, LA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 377      
Buildings, Fixtures and Improvements 716      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,093      
Accumulated Depreciation (160)      
Dollar Tree [Member] | Burton, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 866      
Land 131      
Buildings, Fixtures and Improvements 1,164      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,295      
Accumulated Depreciation (252)      
Dollar Tree [Member] | Winona, MS [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 146      
Buildings, Fixtures and Improvements 585      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 731      
Accumulated Depreciation (172)      
Dollar Tree [Member] | Hoosick Falls, NY [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 181      
Buildings, Fixtures and Improvements 724      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 905      
Accumulated Depreciation (191)      
Duluth Trading Co. [Member] | Avon, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 1,088      
Buildings, Fixtures and Improvements 3,671      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 4,759      
Accumulated Depreciation (27)      
Duluth Trading Co. [Member] | Waukesha, WI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 857      
Buildings, Fixtures and Improvements 4,067      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 4,924      
Accumulated Depreciation (5)      
Dunkin Donuts/Baskin-Robbins [Member] | Dearborn Heights, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 230      
Buildings, Fixtures and Improvements 846      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,076      
Accumulated Depreciation (209)      
Earhart Corporate Center [Member] | Ann Arbor, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 27,070      
Land 3,520      
Buildings, Fixtures and Improvements 39,639      
Costs Capitalized Subsequent to Acquisition (7,267)      
Gross Amount Carried at December 31, 2017 35,892      
Accumulated Depreciation (2,366)      
Eastchase Central [Member] | Montgomery, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 1,480      
Buildings, Fixtures and Improvements 9,117      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 10,597      
Accumulated Depreciation (39)      
Eegee's [Member] | Tucson, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 357      
Buildings, Fixtures and Improvements 436      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 793      
Accumulated Depreciation (102)      
Einstein Bros. Bagels [Member] | Dearborn, MI [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 190      
Buildings, Fixtures and Improvements 724      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 914      
Accumulated Depreciation (179)      
El Chico [Member] | Killeen, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 534      
Buildings, Fixtures and Improvements 992      
Costs Capitalized Subsequent to Acquisition (803)      
Gross Amount Carried at December 31, 2017 723      
Accumulated Depreciation (75)      
Elite Production Services [Member] | Cuero, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 127      
Buildings, Fixtures and Improvements 982      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,109      
Accumulated Depreciation (155)      
EMC Corporation [Member] | Bedford, MA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 51,345      
Land 16,594      
Buildings, Fixtures and Improvements 75,137      
Costs Capitalized Subsequent to Acquisition 203      
Gross Amount Carried at December 31, 2017 91,934      
Accumulated Depreciation (13,547)      
Emdeon Business Services [Member] | Nashville, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 4,700      
Land 688      
Buildings, Fixtures and Improvements 10,417      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 11,105      
Accumulated Depreciation (1,690)      
Energy Maintenance Services US [Member] | Pasadena, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 393      
Buildings, Fixtures and Improvements 2,878      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 3,271      
Accumulated Depreciation (454)      
Evans Exchange [Member] | Evans, GA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 6,517      
Land 3,452      
Buildings, Fixtures and Improvements 9,821      
Costs Capitalized Subsequent to Acquisition 18      
Gross Amount Carried at December 31, 2017 13,291      
Accumulated Depreciation (2,010)      
Experian [Member] | Schaumburg, IL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 5,935      
Buildings, Fixtures and Improvements 26,003      
Costs Capitalized Subsequent to Acquisition (5,777)      
Gross Amount Carried at December 31, 2017 26,161      
Accumulated Depreciation (1,911)      
Express Energy Services [Member] | Pleasanton, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 413      
Buildings, Fixtures and Improvements 5,541      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 5,954      
Accumulated Depreciation (877)      
Express Scripts [Member] | St. Louis, MO [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 5,706      
Buildings, Fixtures and Improvements 32,333      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 38,039      
Accumulated Depreciation (10,515)      
Exterran Energy Solutions [Member] | Fort Worth, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 1,360      
Buildings, Fixtures and Improvements 5,704      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 7,064      
Accumulated Depreciation (895)      
Family Dollar [Member] | Fayetteville, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 267      
Buildings, Fixtures and Improvements 682      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 949      
Accumulated Depreciation (147)      
Family Dollar [Member] | Hickory, NC [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 215      
Buildings, Fixtures and Improvements 785      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,000      
Accumulated Depreciation (115)      
Family Dollar [Member] | Toledo, OH [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 306      
Buildings, Fixtures and Improvements 917      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,223      
Accumulated Depreciation (251)      
Family Dollar [Member] | Avinger, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 40      
Buildings, Fixtures and Improvements 761      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 801      
Accumulated Depreciation (218)      
Family Dollar [Member] | Donna, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 194      
Buildings, Fixtures and Improvements 855      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,049      
Accumulated Depreciation (127)      
Family Dollar [Member] | San Antonio, TX 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 800      
Land 198      
Buildings, Fixtures and Improvements 1,018      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,216      
Accumulated Depreciation (215)      
Family Dollar [Member] | San Antonio, TX 3 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 864      
Land 299      
Buildings, Fixtures and Improvements 1,039      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,338      
Accumulated Depreciation (218)      
Family Dollar [Member] | San Antonio, TX 4 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 598      
Land 260      
Buildings, Fixtures and Improvements 653      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 913      
Accumulated Depreciation (140)      
Family Dollar [Member] | San Antonio, TX 5 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 506      
Land 211      
Buildings, Fixtures and Improvements 567      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 778      
Accumulated Depreciation (121)      
Family Dollar [Member] | San Antonio, TX 6 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 728      
Land 214      
Buildings, Fixtures and Improvements 911      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,125      
Accumulated Depreciation (191)      
Family Dollar [Member] | San Antonio, TX 7 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 1,143      
Land 117      
Buildings, Fixtures and Improvements 1,619      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,736      
Accumulated Depreciation (338)      
Family Dollar [Member] | San Benito, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 598      
Land 132      
Buildings, Fixtures and Improvements 772      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 904      
Accumulated Depreciation (164)      
Family Dollar [Member] | Tyler, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 416      
Land 132      
Buildings, Fixtures and Improvements 554      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 686      
Accumulated Depreciation (116)      
Family Dollar [Member] | Victoria, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 441      
Buildings, Fixtures and Improvements 144      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 585      
Accumulated Depreciation (38)      
Family Dollar [Member] | Waco, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 440      
Land 125      
Buildings, Fixtures and Improvements 544      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 669      
Accumulated Depreciation (116)      
Family Dollar [Member] | Hopewell, VA [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 430      
Buildings, Fixtures and Improvements 987      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,417      
Accumulated Depreciation (222)      
Family Dollar [Member] | Montgomery, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 218      
Buildings, Fixtures and Improvements 847      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,065      
Accumulated Depreciation (123)      
Family Dollar [Member] | Nashville, TN [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 334      
Buildings, Fixtures and Improvements 1,275      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,609      
Accumulated Depreciation (200)      
Family Dollar [Member] | St. Louis, MO [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 168      
Buildings, Fixtures and Improvements 671      
Costs Capitalized Subsequent to Acquisition (4)      
Gross Amount Carried at December 31, 2017 835      
Accumulated Depreciation (200)      
Family Dollar [Member] | Fort Worth, TX [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 276      
Buildings, Fixtures and Improvements 935      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,211      
Accumulated Depreciation (97)      
Family Dollar [Member] | Bessemer, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 295      
Buildings, Fixtures and Improvements 1,301      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,596      
Accumulated Depreciation (227)      
Family Dollar [Member] | Camden, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 137      
Buildings, Fixtures and Improvements 851      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 988      
Accumulated Depreciation (162)      
Family Dollar [Member] | Grove Hill, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 144      
Buildings, Fixtures and Improvements 741      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 885      
Accumulated Depreciation (108)      
Family Dollar [Member] | Hayneville, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 172      
Buildings, Fixtures and Improvements 722      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 894      
Accumulated Depreciation (148)      
Family Dollar [Member] | Hoover, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 368      
Buildings, Fixtures and Improvements 1,153      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,521      
Accumulated Depreciation (168)      
Family Dollar [Member] | Huntsville, AL 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 628      
Buildings, Fixtures and Improvements 924      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,552      
Accumulated Depreciation (115)      
Family Dollar [Member] | Jemison, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 757      
Land 143      
Buildings, Fixtures and Improvements 997      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,140      
Accumulated Depreciation (217)      
Family Dollar [Member] | Marion, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 247      
Buildings, Fixtures and Improvements 780      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,027      
Accumulated Depreciation (115)      
Family Dollar [Member] | Millbrook, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 316      
Buildings, Fixtures and Improvements 1,052      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,368      
Accumulated Depreciation (152)      
Family Dollar [Member] | Montgomery, AL 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 959      
Land 533      
Buildings, Fixtures and Improvements 936      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,469      
Accumulated Depreciation (208)      
Family Dollar [Member] | Wilmer, AL [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 221      
Buildings, Fixtures and Improvements 791      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,012      
Accumulated Depreciation (149)      
Family Dollar [Member] | El Dorado, AR [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 151      
Buildings, Fixtures and Improvements 806      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 957      
Accumulated Depreciation (136)      
Family Dollar [Member] | El Dorado, AR 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 663      
Land 49      
Buildings, Fixtures and Improvements 1,003      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,052      
Accumulated Depreciation (204)      
Family Dollar [Member] | Hot Springs, AR [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 247      
Buildings, Fixtures and Improvements 845      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,092      
Accumulated Depreciation (179)      
Family Dollar [Member] | Jacksonville, AR [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 571      
Land 155      
Buildings, Fixtures and Improvements 758      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 913      
Accumulated Depreciation (155)      
Family Dollar [Member] | Little Rock, AR [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 467      
Land 125      
Buildings, Fixtures and Improvements 629      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 754      
Accumulated Depreciation (128)      
Family Dollar [Member] | Ash Fork, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 123      
Buildings, Fixtures and Improvements 1,015      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,138      
Accumulated Depreciation (147)      
Family Dollar [Member] | Avondale, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 974      
Land 603      
Buildings, Fixtures and Improvements 882      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,485      
Accumulated Depreciation (197)      
Family Dollar [Member] | Casa Grande, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 454      
Buildings, Fixtures and Improvements 313      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 767      
Accumulated Depreciation (78)      
Family Dollar [Member] | Coolidge, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 603      
Land 126      
Buildings, Fixtures and Improvements 785      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 911      
Accumulated Depreciation (170)      
Family Dollar [Member] | Duncan, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 98      
Buildings, Fixtures and Improvements 895      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 993      
Accumulated Depreciation (130)      
Family Dollar [Member] | Fort Mohave, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 302      
Buildings, Fixtures and Improvements 571      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 873      
Accumulated Depreciation (131)      
Family Dollar [Member] | Golden Valley, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 110      
Buildings, Fixtures and Improvements 772      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 882      
Accumulated Depreciation (131)      
Family Dollar [Member] | Guadalupe, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 400      
Buildings, Fixtures and Improvements 584      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 984      
Accumulated Depreciation (134)      
Family Dollar [Member] | Mohave Valley, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 302      
Buildings, Fixtures and Improvements 281      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 583      
Accumulated Depreciation (70)      
Family Dollar [Member] | Phoenix, AZ [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 303      
Buildings, Fixtures and Improvements 712      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,015      
Accumulated Depreciation (118)      
Family Dollar [Member] | Phoenix, AZ 2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2017 0      
Land 416      
Buildings, Fixtures and Improvements 1,229      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2017 1,645      
Accumulated Depreciation $ (174)