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Schedule III - Real Estate and Accumulated Depreciation Section 8 (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 $ 1,529,057,000      
Land 2,786,282,000      
Buildings, Fixtures and Improvements 10,186,554,000      
Costs Capitalized Subsequent to Acquisition (33,607,000)      
Gross Amount Carried at December 31, 2019 12,939,229,000 $ 13,592,440,000 $ 13,577,700,000 $ 13,539,921,000
Accumulated Depreciation (2,727,099,000) $ (2,622,879,000) $ (2,217,108,000) $ (1,766,006,000)
Fresenius Medical Care [Member] | Fairmont, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 201,000      
Buildings, Fixtures and Improvements 1,819,000      
Costs Capitalized Subsequent to Acquisition 7,000      
Gross Amount Carried at December 31, 2019 2,027,000      
Accumulated Depreciation (508,000)      
Fresenius Medical Care [Member] | Fayetteville, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 420,000      
Buildings, Fixtures and Improvements 2,379,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,799,000      
Accumulated Depreciation (665,000)      
Fresenius Medical Care [Member] | Fayetteville, NC 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 134,000      
Buildings, Fixtures and Improvements 2,551,000      
Costs Capitalized Subsequent to Acquisition 87,000      
Gross Amount Carried at December 31, 2019 2,772,000      
Accumulated Depreciation (714,000)      
Fresenius Medical Care [Member] | Fayetteville, NC 3 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 178,000      
Buildings, Fixtures and Improvements 3,379,000      
Costs Capitalized Subsequent to Acquisition 99,000      
Gross Amount Carried at December 31, 2019 3,656,000      
Accumulated Depreciation (945,000)      
Fresenius Medical Care [Member] | Lumberton, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 117,000      
Buildings, Fixtures and Improvements 2,216,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,333,000      
Accumulated Depreciation (620,000)      
Fresenius Medical Care [Member] | Pembroke, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 81,000      
Buildings, Fixtures and Improvements 1,547,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,628,000      
Accumulated Depreciation (433,000)      
Fresenius Medical Care [Member] | Red Springs, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 101,000      
Buildings, Fixtures and Improvements 1,913,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,014,000      
Accumulated Depreciation (535,000)      
Fresenius Medical Care [Member] | Roseboro, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 74,000      
Buildings, Fixtures and Improvements 1,404,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,478,000      
Accumulated Depreciation (393,000)      
Fresenius Medical Care [Member] | St. Pauls, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 73,000      
Buildings, Fixtures and Improvements 1,389,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,462,000      
Accumulated Depreciation (388,000)      
Fresenius Medical Care [Member] | Fairhope, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 0      
Buildings, Fixtures and Improvements 2,035,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,035,000      
Accumulated Depreciation (564,000)      
Fresenius Medical Care [Member] | Foley, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 287,000      
Buildings, Fixtures and Improvements 2,580,000      
Costs Capitalized Subsequent to Acquisition (9,000)      
Gross Amount Carried at December 31, 2019 2,858,000      
Accumulated Depreciation (715,000)      
Fresenius Medical Care [Member] | Mobile, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 278,000      
Buildings, Fixtures and Improvements 2,505,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,783,000      
Accumulated Depreciation (695,000)      
Fresenius Medical Care [Member] | Defuniak Springs, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 115,000      
Buildings, Fixtures and Improvements 2,180,000      
Costs Capitalized Subsequent to Acquisition 9,000      
Gross Amount Carried at December 31, 2019 2,304,000      
Accumulated Depreciation (605,000)      
Fresenius Medical Care [Member] | Dallas, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 377,000      
Buildings, Fixtures and Improvements 1,132,000      
Costs Capitalized Subsequent to Acquisition 80,000      
Gross Amount Carried at December 31, 2019 1,589,000      
Accumulated Depreciation (319,000)      
Kum & Go [Member] | Gillette, WY [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 878,000      
Buildings, Fixtures and Improvements 2,048,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,926,000      
Accumulated Depreciation (664,000)      
Kum & Go [Member] | Muskogee, OK [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 423,000      
Buildings, Fixtures and Improvements 1,691,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,114,000      
Accumulated Depreciation (544,000)      
Dollar General [Member] | Fayetteville, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 300,000      
Land 216,000      
Buildings, Fixtures and Improvements 647,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 863,000      
Accumulated Depreciation (234,000)      
Dollar General [Member] | Bastrop, LA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 148,000      
Buildings, Fixtures and Improvements 838,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 986,000      
Accumulated Depreciation (270,000)      
Dollar General [Member] | Powhatan Point, OH [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 138,000      
Buildings, Fixtures and Improvements 784,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 922,000      
Accumulated Depreciation (252,000)      
Dollar General [Member] | Millwood, WV [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 98,000      
Buildings, Fixtures and Improvements 881,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 979,000      
Accumulated Depreciation (284,000)      
Dollar General [Member] | West Union, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 46,000      
Buildings, Fixtures and Improvements 868,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 914,000      
Accumulated Depreciation (280,000)      
Dollar General [Member] | Mobile, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 207,000      
Buildings, Fixtures and Improvements 1,039,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,246,000      
Accumulated Depreciation (314,000)      
Dollar General [Member] | Eagle Grove, IA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 100,000      
Buildings, Fixtures and Improvements 902,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,002,000      
Accumulated Depreciation (290,000)      
Dollar General [Member] | San Antonio, TX 6 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 220,000      
Buildings, Fixtures and Improvements 880,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,100,000      
Accumulated Depreciation (283,000)      
Dollar General [Member] | Farmington, NM 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 224,000      
Buildings, Fixtures and Improvements 898,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,122,000      
Accumulated Depreciation (289,000)      
Dollar General [Member] | Amarillo, TX 3 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 198,000      
Buildings, Fixtures and Improvements 794,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 992,000      
Accumulated Depreciation (256,000)      
Dollar General [Member] | Edinburg, TX 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 102,000      
Buildings, Fixtures and Improvements 914,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,016,000      
Accumulated Depreciation (294,000)      
Dollar General [Member] | Batesville, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 32,000      
Buildings, Fixtures and Improvements 285,000      
Costs Capitalized Subsequent to Acquisition 7,000      
Gross Amount Carried at December 31, 2019 324,000      
Accumulated Depreciation (92,000)      
Dollar General [Member] | Batesville, AR 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 42,000      
Buildings, Fixtures and Improvements 374,000      
Costs Capitalized Subsequent to Acquisition 78,000      
Gross Amount Carried at December 31, 2019 494,000      
Accumulated Depreciation (126,000)      
Dollar General [Member] | Beebe, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 51,000      
Buildings, Fixtures and Improvements 478,000      
Costs Capitalized Subsequent to Acquisition 52,000      
Gross Amount Carried at December 31, 2019 581,000      
Accumulated Depreciation (155,000)      
Dollar General [Member] | Blytheville, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 30,000      
Buildings, Fixtures and Improvements 285,000      
Costs Capitalized Subsequent to Acquisition 50,000      
Gross Amount Carried at December 31, 2019 365,000      
Accumulated Depreciation (96,000)      
Dollar General [Member] | Des Arc, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 56,000      
Buildings, Fixtures and Improvements 508,000      
Costs Capitalized Subsequent to Acquisition 53,000      
Gross Amount Carried at December 31, 2019 617,000      
Accumulated Depreciation (171,000)      
Dollar General [Member] | Dumas, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 46,000      
Buildings, Fixtures and Improvements 412,000      
Costs Capitalized Subsequent to Acquisition 23,000      
Gross Amount Carried at December 31, 2019 481,000      
Accumulated Depreciation (134,000)      
Dollar General [Member] | Gassville, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 54,000      
Buildings, Fixtures and Improvements 325,000      
Costs Capitalized Subsequent to Acquisition 21,000      
Gross Amount Carried at December 31, 2019 400,000      
Accumulated Depreciation (106,000)      
Dollar General [Member] | Higden, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 52,000      
Buildings, Fixtures and Improvements 469,000      
Costs Capitalized Subsequent to Acquisition 80,000      
Gross Amount Carried at December 31, 2019 601,000      
Accumulated Depreciation (159,000)      
Dollar General [Member] | Lake Village, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 64,000      
Buildings, Fixtures and Improvements 362,000      
Costs Capitalized Subsequent to Acquisition 29,000      
Gross Amount Carried at December 31, 2019 455,000      
Accumulated Depreciation (120,000)      
Dollar General [Member] | Lepanto, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 43,000      
Buildings, Fixtures and Improvements 389,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 432,000      
Accumulated Depreciation (125,000)      
Dollar General [Member] | Little Rock, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 73,000      
Buildings, Fixtures and Improvements 412,000      
Costs Capitalized Subsequent to Acquisition 13,000      
Gross Amount Carried at December 31, 2019 498,000      
Accumulated Depreciation (133,000)      
Dollar General [Member] | Marvell, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 40,000      
Buildings, Fixtures and Improvements 364,000      
Costs Capitalized Subsequent to Acquisition 107,000      
Gross Amount Carried at December 31, 2019 511,000      
Accumulated Depreciation (129,000)      
Dollar General [Member] | Mcgehee, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 25,000      
Buildings, Fixtures and Improvements 228,000      
Costs Capitalized Subsequent to Acquisition 29,000      
Gross Amount Carried at December 31, 2019 282,000      
Accumulated Depreciation (77,000)      
Dollar General [Member] | Quitman, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 45,000      
Buildings, Fixtures and Improvements 426,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 471,000      
Accumulated Depreciation (133,000)      
Dollar General [Member] | Searcy, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 29,000      
Buildings, Fixtures and Improvements 263,000      
Costs Capitalized Subsequent to Acquisition 66,000      
Gross Amount Carried at December 31, 2019 358,000      
Accumulated Depreciation (90,000)      
Dollar General [Member] | Tuckerman, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 49,000      
Buildings, Fixtures and Improvements 280,000      
Costs Capitalized Subsequent to Acquisition 81,000      
Gross Amount Carried at December 31, 2019 410,000      
Accumulated Depreciation (101,000)      
Dollar General [Member] | White Hall, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 43,000      
Buildings, Fixtures and Improvements 388,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 431,000      
Accumulated Depreciation (125,000)      
Dollar General [Member] | Adams, MA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 254,000      
Buildings, Fixtures and Improvements 1,016,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,270,000      
Accumulated Depreciation (320,000)      
Dollar General [Member] | Lake Charles, LA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 102,000      
Buildings, Fixtures and Improvements 919,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,021,000      
Accumulated Depreciation (332,000)      
Dollar General [Member] | Lake Charles, LA 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 406,000      
Buildings, Fixtures and Improvements 770,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,176,000      
Accumulated Depreciation (237,000)      
Dollar General [Member] | Kansas City, MO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 313,000      
Buildings, Fixtures and Improvements 731,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,044,000      
Accumulated Depreciation (253,000)      
Dollar General [Member] | Amarillo, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 97,000      
Buildings, Fixtures and Improvements 877,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 974,000      
Accumulated Depreciation (280,000)      
Dollar General [Member] | Texarkana, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 136,000      
Buildings, Fixtures and Improvements 772,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 908,000      
Accumulated Depreciation (243,000)      
Dollar General [Member] | San Antonio, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 252,000      
Buildings, Fixtures and Improvements 756,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,008,000      
Accumulated Depreciation (259,000)      
Dollar General [Member] | Sandusky, OH [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 210,000      
Buildings, Fixtures and Improvements 1,700,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,910,000      
Accumulated Depreciation (493,000)      
Dollar General [Member] | Phenix City, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 267,000      
Buildings, Fixtures and Improvements 929,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,196,000      
Accumulated Depreciation (279,000)      
Dollar General [Member] | Lakeland, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 413,000      
Buildings, Fixtures and Improvements 1,810,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,223,000      
Accumulated Depreciation (536,000)      
Dollar Tree/Family Dollar [Member] | Fayetteville, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 267,000      
Buildings, Fixtures and Improvements 682,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 949,000      
Accumulated Depreciation (210,000)      
Dollar Tree/Family Dollar [Member] | Lumberton, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 151,000      
Buildings, Fixtures and Improvements 603,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 754,000      
Accumulated Depreciation (191,000)      
Dollar Tree/Family Dollar [Member] | Gretna, VA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 131,000      
Buildings, Fixtures and Improvements 744,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 875,000      
Accumulated Depreciation (240,000)      
Dollar Tree/Family Dollar [Member] | Columbia, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 429,000      
Buildings, Fixtures and Improvements 719,000      
Costs Capitalized Subsequent to Acquisition (35,000)      
Gross Amount Carried at December 31, 2019 1,113,000      
Accumulated Depreciation (221,000)      
Dollar Tree/Family Dollar [Member] | San Antonio, TX 6 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 214,000      
Buildings, Fixtures and Improvements 911,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,125,000      
Accumulated Depreciation (265,000)      
Dollar Tree/Family Dollar [Member] | Mount Vernon, IL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 117,000      
Buildings, Fixtures and Improvements 1,050,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,167,000      
Accumulated Depreciation (338,000)      
Dollar Tree/Family Dollar [Member] | Birch Run, MI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 81,000      
Buildings, Fixtures and Improvements 729,000      
Costs Capitalized Subsequent to Acquisition 86,000      
Gross Amount Carried at December 31, 2019 896,000      
Accumulated Depreciation (253,000)      
Dollar Tree/Family Dollar [Member] | Crosby, MN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 49,000      
Buildings, Fixtures and Improvements 928,000      
Costs Capitalized Subsequent to Acquisition 39,000      
Gross Amount Carried at December 31, 2019 1,016,000      
Accumulated Depreciation (299,000)      
Dollar Tree/Family Dollar [Member] | Toledo, OH 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 226,000      
Buildings, Fixtures and Improvements 905,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,131,000      
Accumulated Depreciation (291,000)      
Dollar Tree/Family Dollar [Member] | Webster, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 43,000      
Buildings, Fixtures and Improvements 808,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 851,000      
Accumulated Depreciation (260,000)      
Dollar Tree/Family Dollar [Member] | Alderson, WV [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 166,000      
Buildings, Fixtures and Improvements 663,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 829,000      
Accumulated Depreciation (214,000)      
Dollar Tree/Family Dollar [Member] | Harrison, TN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 74,000      
Buildings, Fixtures and Improvements 420,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 494,000      
Accumulated Depreciation (135,000)      
Dollar Tree/Family Dollar [Member] | Nashville, TN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 334,000      
Buildings, Fixtures and Improvements 1,275,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,609,000      
Accumulated Depreciation (312,000)      
Dollar Tree/Family Dollar [Member] | Little Rock, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 125,000      
Buildings, Fixtures and Improvements 629,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 754,000      
Accumulated Depreciation (178,000)      
Dollar Tree/Family Dollar [Member] | Burton, MI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 131,000      
Buildings, Fixtures and Improvements 1,164,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,295,000      
Accumulated Depreciation (349,000)      
Dollar Tree/Family Dollar [Member] | Orlando, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 349,000      
Buildings, Fixtures and Improvements 1,294,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,643,000      
Accumulated Depreciation (283,000)      
Dollar Tree/Family Dollar [Member] | Memphis, TN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 248,000      
Buildings, Fixtures and Improvements 1,039,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,287,000      
Accumulated Depreciation (305,000)      
Dollar Tree/Family Dollar [Member] | Memphis, TN 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 215,000      
Buildings, Fixtures and Improvements 811,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,026,000      
Accumulated Depreciation (239,000)      
Dollar Tree/Family Dollar [Member] | Memphis, TN 3 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 1,251,000      
Land 376,000      
Buildings, Fixtures and Improvements 1,508,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,884,000      
Accumulated Depreciation (452,000)      
Dollar Tree/Family Dollar [Member] | Memphis, TN 4 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 973,000      
Land 336,000      
Buildings, Fixtures and Improvements 1,156,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,492,000      
Accumulated Depreciation (343,000)      
Dollar Tree/Family Dollar [Member] | Kansas City, MO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 277,000      
Buildings, Fixtures and Improvements 812,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,089,000      
Accumulated Depreciation (238,000)      
Dollar Tree/Family Dollar [Member] | Phoenix, AZ [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 303,000      
Buildings, Fixtures and Improvements 712,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,015,000      
Accumulated Depreciation (185,000)      
Dollar Tree/Family Dollar [Member] | Dallas, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 627,000      
Land 292,000      
Buildings, Fixtures and Improvements 676,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 968,000      
Accumulated Depreciation (208,000)      
Dollar Tree/Family Dollar [Member] | Jacksonville, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 271,000      
Buildings, Fixtures and Improvements 1,121,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,392,000      
Accumulated Depreciation (309,000)      
Dollar Tree/Family Dollar [Member] | Tulsa, OK [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 220,000      
Buildings, Fixtures and Improvements 878,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,098,000      
Accumulated Depreciation (307,000)      
Dollar Tree/Family Dollar [Member] | Houston, TX 4 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 138,000      
Buildings, Fixtures and Improvements 1,052,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,190,000      
Accumulated Depreciation (301,000)      
Dollar Tree/Family Dollar [Member] | Houston, TX 5 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 128,000      
Buildings, Fixtures and Improvements 769,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 897,000      
Accumulated Depreciation (207,000)      
Dollar Tree/Family Dollar [Member] | Houston, TX 6 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 277,000      
Buildings, Fixtures and Improvements 1,144,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,421,000      
Accumulated Depreciation (329,000)      
Dollar Tree/Family Dollar [Member] | Tampa, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 1,005,000      
Land 531,000      
Buildings, Fixtures and Improvements 1,062,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,593,000      
Accumulated Depreciation (317,000)      
Dollar Tree/Family Dollar [Member] | Detroit, MI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 130,000      
Buildings, Fixtures and Improvements 1,169,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,299,000      
Accumulated Depreciation (398,000)      
Dollar Tree/Family Dollar [Member] | Lakeland, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 339,000      
Buildings, Fixtures and Improvements 785,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,124,000      
Accumulated Depreciation (239,000)      
Dollar Tree/Family Dollar [Member] | Largo, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 844,000      
Buildings, Fixtures and Improvements 962,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,806,000      
Accumulated Depreciation (294,000)      
Dollar Tree/Family Dollar [Member] | St. Petersburg, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 1,093,000      
Land 690,000      
Buildings, Fixtures and Improvements 1,000,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,690,000      
Accumulated Depreciation (309,000)      
Dollar Tree/Family Dollar [Member] | Winter Haven, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 534,000      
Buildings, Fixtures and Improvements 942,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,476,000      
Accumulated Depreciation (144,000)      
Dollar Tree/Family Dollar [Member] | Roswell, NM [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 766,000      
Land 140,000      
Buildings, Fixtures and Improvements 953,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,093,000      
Accumulated Depreciation (289,000)      
Walgreens [Member] | Denver, CO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 3,350,000      
Land 0      
Buildings, Fixtures and Improvements 4,050,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,050,000      
Accumulated Depreciation (1,392,000)      
Walgreens [Member] | Castle Rock, CO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 3,953,000      
Land 1,581,000      
Buildings, Fixtures and Improvements 3,689,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 5,270,000      
Accumulated Depreciation (1,268,000)      
Walgreens [Member] | Adams, MA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 300,000      
Buildings, Fixtures and Improvements 1,200,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,500,000      
Accumulated Depreciation (412,000)      
Walgreens [Member] | Wilson, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 573,000      
Buildings, Fixtures and Improvements 1,337,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,910,000      
Accumulated Depreciation (459,000)      
Walgreens [Member] | Orlando, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,007,000      
Buildings, Fixtures and Improvements 1,869,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,876,000      
Accumulated Depreciation (633,000)      
Walgreens [Member] | Memphis, TN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 896,000      
Buildings, Fixtures and Improvements 2,687,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,583,000      
Accumulated Depreciation (984,000)      
Walgreens [Member] | Tucson, AZ [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,234,000      
Buildings, Fixtures and Improvements 5,143,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 6,377,000      
Accumulated Depreciation (1,521,000)      
Walgreens [Member] | Tulsa, OK [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,147,000      
Buildings, Fixtures and Improvements 2,904,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,051,000      
Accumulated Depreciation (869,000)      
Walgreens [Member] | Huntington, WV [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 964,000      
Buildings, Fixtures and Improvements 2,250,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,214,000      
Accumulated Depreciation (819,000)      
Walgreens [Member] | Anderson, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 835,000      
Buildings, Fixtures and Improvements 3,342,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,177,000      
Accumulated Depreciation (1,291,000)      
Walgreens [Member] | Spartanburg, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 894,000      
Buildings, Fixtures and Improvements 3,575,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,469,000      
Accumulated Depreciation (1,133,000)      
CVS [Member] | Columbia, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 2,278,000      
Land 0      
Buildings, Fixtures and Improvements 2,811,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,811,000      
Accumulated Depreciation (822,000)      
CVS [Member] | Eden, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 836,000      
Buildings, Fixtures and Improvements 1,450,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,286,000      
Accumulated Depreciation (436,000)      
CVS [Member] | Nashville, TN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 203,000      
Buildings, Fixtures and Improvements 1,148,000      
Costs Capitalized Subsequent to Acquisition 82,000      
Gross Amount Carried at December 31, 2019 1,433,000      
Accumulated Depreciation (425,000)      
CVS [Member] | Mishawaka, IN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 2,258,000      
Land 409,000      
Buildings, Fixtures and Improvements 4,532,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,941,000      
Accumulated Depreciation (1,363,000)      
CVS [Member] | Metairie, LA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 4,121,000      
Land 1,895,000      
Buildings, Fixtures and Improvements 3,519,000      
Costs Capitalized Subsequent to Acquisition 16,000      
Gross Amount Carried at December 31, 2019 5,430,000      
Accumulated Depreciation (1,186,000)      
CVS [Member] | Phoenix, AZ [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 5,025,000      
Land 1,511,000      
Buildings, Fixtures and Improvements 4,533,000      
Costs Capitalized Subsequent to Acquisition 4,000      
Gross Amount Carried at December 31, 2019 6,048,000      
Accumulated Depreciation (1,527,000)      
CVS [Member] | Henrietta, NY [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 965,000      
Buildings, Fixtures and Improvements 1,180,000      
Costs Capitalized Subsequent to Acquisition 63,000      
Gross Amount Carried at December 31, 2019 2,208,000      
Accumulated Depreciation (431,000)      
CVS [Member] | Jacksonville, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 3,715,000      
Land 2,240,000      
Buildings, Fixtures and Improvements 4,323,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 6,563,000      
Accumulated Depreciation (1,310,000)      
CVS [Member] | Sacramento, CA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 4,724,000      
Land 2,163,000      
Buildings, Fixtures and Improvements 4,016,000      
Costs Capitalized Subsequent to Acquisition 19,000      
Gross Amount Carried at December 31, 2019 6,198,000      
Accumulated Depreciation (1,353,000)      
CVS [Member] | San Antonio, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 3,806,000      
Land 1,996,000      
Buildings, Fixtures and Improvements 2,993,000      
Costs Capitalized Subsequent to Acquisition 16,000      
Gross Amount Carried at December 31, 2019 5,005,000      
Accumulated Depreciation (1,009,000)      
CVS [Member] | Tulsa, OK [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 2,446,000      
Land 950,000      
Buildings, Fixtures and Improvements 2,216,000      
Costs Capitalized Subsequent to Acquisition 16,000      
Gross Amount Carried at December 31, 2019 3,182,000      
Accumulated Depreciation (748,000)      
CVS [Member] | Detroit, MI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 270,000      
Buildings, Fixtures and Improvements 2,427,000      
Costs Capitalized Subsequent to Acquisition (2,234,000)      
Gross Amount Carried at December 31, 2019 463,000      
Accumulated Depreciation 0      
CVS [Member] | Anderson, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 623,000      
Buildings, Fixtures and Improvements 1,389,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,012,000      
Accumulated Depreciation (402,000)      
CVS [Member] | Greenville, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 169,000      
Buildings, Fixtures and Improvements 1,520,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,689,000      
Accumulated Depreciation (541,000)      
CVS [Member] | Lakeland, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 2,258,000      
Land 587,000      
Buildings, Fixtures and Improvements 2,347,000      
Costs Capitalized Subsequent to Acquisition 16,000      
Gross Amount Carried at December 31, 2019 2,950,000      
Accumulated Depreciation (792,000)      
CVS [Member] | New Port Richey, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 1,570,000      
Land 1,149,000      
Buildings, Fixtures and Improvements 2,966,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,115,000      
Accumulated Depreciation (886,000)      
Advance Auto Parts [Member] | Eden, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 320,000      
Buildings, Fixtures and Improvements 746,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,066,000      
Accumulated Depreciation (240,000)      
Advance Auto Parts [Member] | Mishawaka, IN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 429,000      
Buildings, Fixtures and Improvements 1,373,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,802,000      
Accumulated Depreciation (382,000)      
Advance Auto Parts [Member] | Fort Wayne, IN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 193,000      
Buildings, Fixtures and Improvements 450,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 643,000      
Accumulated Depreciation (150,000)      
Advance Auto Parts [Member] | Houston, TX 4 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 285,000      
Buildings, Fixtures and Improvements 1,405,000      
Costs Capitalized Subsequent to Acquisition (8,000)      
Gross Amount Carried at December 31, 2019 1,682,000      
Accumulated Depreciation (376,000)      
Advance Auto Parts [Member] | Houston, TX 5 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 225,000      
Buildings, Fixtures and Improvements 1,293,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,518,000      
Accumulated Depreciation (346,000)      
Advance Auto Parts [Member] | Houston, TX 6 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 189,000      
Buildings, Fixtures and Improvements 1,666,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,855,000      
Accumulated Depreciation (442,000)      
Monro Muffler [Member] | Waukesha, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 228,000      
Buildings, Fixtures and Improvements 684,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 912,000      
Accumulated Depreciation (234,000)      
Sun Trust Bank [Member] | Annapolis, MD [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 2,653,000      
Buildings, Fixtures and Improvements 2,170,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,823,000      
Accumulated Depreciation (669,000)      
Sun Trust Bank [Member] | Nashville, TN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 567,000      
Buildings, Fixtures and Improvements 305,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 872,000      
Accumulated Depreciation (94,000)      
Sun Trust Bank [Member] | Port Orange, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 590,000      
Buildings, Fixtures and Improvements 1,095,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,685,000      
Accumulated Depreciation (347,000)      
Sun Trust Bank [Member] | Lakeland, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 598,000      
Buildings, Fixtures and Improvements 1,110,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,708,000      
Accumulated Depreciation (350,000)      
FedEx [Member] | Melbourne, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 159,000      
Buildings, Fixtures and Improvements 1,433,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,592,000      
Accumulated Depreciation (514,000)      
FedEx [Member] | Tulsa, OK [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 458,000      
Buildings, Fixtures and Improvements 8,695,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 9,153,000      
Accumulated Depreciation (3,577,000)      
Rite Aid [Member] | Burton, MI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 128,000      
Buildings, Fixtures and Improvements 2,541,000      
Costs Capitalized Subsequent to Acquisition 24,000      
Gross Amount Carried at December 31, 2019 2,693,000      
Accumulated Depreciation (870,000)      
Rite Aid [Member] | Memphis, TN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 266,000      
Buildings, Fixtures and Improvements 1,062,000      
Costs Capitalized Subsequent to Acquisition 54,000      
Gross Amount Carried at December 31, 2019 1,382,000      
Accumulated Depreciation (362,000)      
Rubbermaid [Member] | Bowling Green, OH [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 714,000      
Buildings, Fixtures and Improvements 13,564,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 14,278,000      
Accumulated Depreciation (4,869,000)      
Vacant [Member] | Mobile, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 127,000      
Buildings, Fixtures and Improvements 276,000      
Costs Capitalized Subsequent to Acquisition (388,000)      
Gross Amount Carried at December 31, 2019 15,000      
Accumulated Depreciation 0      
Vacant [Member] | Melbourne, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 464,000      
Buildings, Fixtures and Improvements 1,392,000      
Costs Capitalized Subsequent to Acquisition (1,131,000)      
Gross Amount Carried at December 31, 2019 725,000      
Accumulated Depreciation (14,000)      
Vacant [Member] | Mishawaka, IN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 375,000      
Buildings, Fixtures and Improvements 1,500,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,875,000      
Accumulated Depreciation (483,000)      
Vacant [Member] | Rochester, NY [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 128,000      
Buildings, Fixtures and Improvements 384,000      
Costs Capitalized Subsequent to Acquisition (337,000)      
Gross Amount Carried at December 31, 2019 175,000      
Accumulated Depreciation 0      
Vacant [Member] | Memphis, TN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 100,000      
Buildings, Fixtures and Improvements 283,000      
Costs Capitalized Subsequent to Acquisition 167,000      
Gross Amount Carried at December 31, 2019 550,000      
Accumulated Depreciation 0      
Vacant [Member] | Killeen, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 534,000      
Buildings, Fixtures and Improvements 992,000      
Costs Capitalized Subsequent to Acquisition (803,000)      
Gross Amount Carried at December 31, 2019 723,000      
Accumulated Depreciation (115,000)      
Vacant [Member] | Dallas, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 810,000      
Buildings, Fixtures and Improvements 1,656,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,466,000      
Accumulated Depreciation (550,000)      
Vacant [Member] | Shamokin, PA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 54,000      
Buildings, Fixtures and Improvements 217,000      
Costs Capitalized Subsequent to Acquisition (131,000)      
Gross Amount Carried at December 31, 2019 140,000      
Accumulated Depreciation (4,000)      
Vacant [Member] | Schofield, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 106,000      
Buildings, Fixtures and Improvements 196,000      
Costs Capitalized Subsequent to Acquisition (177,000)      
Gross Amount Carried at December 31, 2019 125,000      
Accumulated Depreciation (2,000)      
Vacant [Member] | Indiana, PA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 676,000      
Buildings, Fixtures and Improvements 1,255,000      
Costs Capitalized Subsequent to Acquisition (1,119,000)      
Gross Amount Carried at December 31, 2019 812,000      
Accumulated Depreciation (10,000)      
Vacant [Member] | Cocoa, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 249,000      
Buildings, Fixtures and Improvements 567,000      
Costs Capitalized Subsequent to Acquisition (591,000)      
Gross Amount Carried at December 31, 2019 225,000      
Accumulated Depreciation 0      
Vacant [Member] | The Dalles, OR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 201,000      
Buildings, Fixtures and Improvements 802,000      
Costs Capitalized Subsequent to Acquisition (486,000)      
Gross Amount Carried at December 31, 2019 517,000      
Accumulated Depreciation (238,000)      
Vacant [Member] | Auburn, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,111,000      
Buildings, Fixtures and Improvements 933,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,044,000      
Accumulated Depreciation (313,000)      
Vacant [Member] | Augusta, GA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 178,000      
Buildings, Fixtures and Improvements 533,000      
Costs Capitalized Subsequent to Acquisition (591,000)      
Gross Amount Carried at December 31, 2019 120,000      
Accumulated Depreciation (9,000)      
Vacant [Member] | Lake Oswego, OR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 590,000      
Buildings, Fixtures and Improvements 1,693,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,283,000      
Accumulated Depreciation (563,000)      
Applebee's [Member] | Fall River, MA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 275,000      
Buildings, Fixtures and Improvements 1,558,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,833,000      
Accumulated Depreciation (535,000)      
Applebee's [Member] | Savannah, GA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,329,000      
Buildings, Fixtures and Improvements 2,468,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,797,000      
Accumulated Depreciation (848,000)      
Applebee's [Member] | San Antonio, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 732,000      
Buildings, Fixtures and Improvements 1,796,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,528,000      
Accumulated Depreciation (601,000)      
Applebee's [Member] | Greenville, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 600,000      
Buildings, Fixtures and Improvements 2,166,000      
Costs Capitalized Subsequent to Acquisition (1,528,000)      
Gross Amount Carried at December 31, 2019 1,238,000      
Accumulated Depreciation (108,000)      
Applebee's [Member] | Auburn, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,155,000      
Buildings, Fixtures and Improvements 1,732,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,887,000      
Accumulated Depreciation (595,000)      
Applebee's [Member] | Phenix City, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,488,000      
Buildings, Fixtures and Improvements 2,232,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,720,000      
Accumulated Depreciation (766,000)      
Applebee's [Member] | Arvada, CO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 754,000      
Buildings, Fixtures and Improvements 1,760,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,514,000      
Accumulated Depreciation (604,000)      
Applebee's [Member] | Brighton, CO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 657,000      
Buildings, Fixtures and Improvements 1,972,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,629,000      
Accumulated Depreciation (677,000)      
Applebee's [Member] | Colorado Springs, CO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 499,000      
Buildings, Fixtures and Improvements 1,996,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,495,000      
Accumulated Depreciation (685,000)      
Applebee's [Member] | Colorado Springs, CO 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 629,000      
Buildings, Fixtures and Improvements 1,888,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,517,000      
Accumulated Depreciation (648,000)      
Applebee's [Member] | Greeley, CO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 559,000      
Buildings, Fixtures and Improvements 2,235,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,794,000      
Accumulated Depreciation (767,000)      
Applebee's [Member] | Northglenn, CO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 578,000      
Buildings, Fixtures and Improvements 1,734,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,312,000      
Accumulated Depreciation (595,000)      
Applebee's [Member] | Pueblo, CO 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 960,000      
Buildings, Fixtures and Improvements 2,879,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,839,000      
Accumulated Depreciation (989,000)      
Applebee's [Member] | Bradenton, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 2,475,000      
Buildings, Fixtures and Improvements 3,713,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 6,188,000      
Accumulated Depreciation (1,275,000)      
Applebee's [Member] | Crestview, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 943,000      
Buildings, Fixtures and Improvements 1,752,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,695,000      
Accumulated Depreciation (602,000)      
Applebee's [Member] | Crystal River, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,328,000      
Buildings, Fixtures and Improvements 2,467,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,795,000      
Accumulated Depreciation (847,000)      
Applebee's [Member] | Davenport, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,506,000      
Buildings, Fixtures and Improvements 4,517,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 6,023,000      
Accumulated Depreciation (1,551,000)      
Applebee's [Member] | Inverness, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,977,000      
Buildings, Fixtures and Improvements 2,965,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,942,000      
Accumulated Depreciation (1,018,000)      
Applebee's [Member] | Lakeland, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,283,000      
Buildings, Fixtures and Improvements 2,383,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,666,000      
Accumulated Depreciation (818,000)      
Applebee's [Member] | Lakeland, FL 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,959,000      
Buildings, Fixtures and Improvements 3,638,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 5,597,000      
Accumulated Depreciation (1,249,000)      
Applebee's [Member] | Largo, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 2,334,000      
Buildings, Fixtures and Improvements 3,501,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 5,835,000      
Accumulated Depreciation (1,202,000)      
Applebee's [Member] | New Port Richey, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,695,000      
Buildings, Fixtures and Improvements 3,147,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,842,000      
Accumulated Depreciation (1,081,000)      
Applebee's [Member] | Riverview, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,849,000      
Buildings, Fixtures and Improvements 3,434,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 5,283,000      
Accumulated Depreciation (1,180,000)      
Applebee's [Member] | St. Petersburg, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 2,329,000      
Buildings, Fixtures and Improvements 3,493,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 5,822,000      
Accumulated Depreciation (1,200,000)      
Applebee's [Member] | Temple Terrace, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 2,396,000      
Buildings, Fixtures and Improvements 3,594,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 5,990,000      
Accumulated Depreciation (1,234,000)      
Applebee's [Member] | Wesley Chapel, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 3,272,000      
Buildings, Fixtures and Improvements 3,272,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 6,544,000      
Accumulated Depreciation (1,124,000)      
Applebee's [Member] | Winter Haven, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 2,130,000      
Buildings, Fixtures and Improvements 2,603,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,733,000      
Accumulated Depreciation (894,000)      
Applebee's [Member] | Augusta, GA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,254,000      
Buildings, Fixtures and Improvements 2,329,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,583,000      
Accumulated Depreciation (800,000)      
Applebee's [Member] | Dublin, GA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,171,000      
Buildings, Fixtures and Improvements 1,431,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,602,000      
Accumulated Depreciation (491,000)      
Applebee's [Member] | Evans, GA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,426,000      
Buildings, Fixtures and Improvements 2,649,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,075,000      
Accumulated Depreciation (910,000)      
Applebee's [Member] | Milledgeville, GA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,174,000      
Buildings, Fixtures and Improvements 1,761,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,935,000      
Accumulated Depreciation (605,000)      
Applebee's [Member] | Boise, ID [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 948,000      
Buildings, Fixtures and Improvements 1,761,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,709,000      
Accumulated Depreciation (605,000)      
Applebee's [Member] | Nampa, ID [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 729,000      
Buildings, Fixtures and Improvements 2,915,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,644,000      
Accumulated Depreciation (1,001,000)      
Applebee's [Member] | Pocatello, ID [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 612,000      
Buildings, Fixtures and Improvements 1,837,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,449,000      
Accumulated Depreciation (631,000)      
Applebee's [Member] | Hobbs, NM [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 600,000      
Buildings, Fixtures and Improvements 3,401,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,001,000      
Accumulated Depreciation (1,168,000)      
Applebee's [Member] | Rio Rancho, NM [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 645,000      
Buildings, Fixtures and Improvements 3,654,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,299,000      
Accumulated Depreciation (1,255,000)      
Applebee's [Member] | Roswell, NM [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 405,000      
Buildings, Fixtures and Improvements 2,295,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,700,000      
Accumulated Depreciation (788,000)      
Applebee's [Member] | Clackamas, OR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 901,000      
Buildings, Fixtures and Improvements 2,103,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,004,000      
Accumulated Depreciation (722,000)      
Applebee's [Member] | Lake Oswego, OR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,352,000      
Buildings, Fixtures and Improvements 1,652,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,004,000      
Accumulated Depreciation (568,000)      
Arby's [Member] | Fayetteville, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 420,000      
Buildings, Fixtures and Improvements 2,001,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,421,000      
Accumulated Depreciation (658,000)      
Arby's [Member] | Mount Vernon, IL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 911,000      
Buildings, Fixtures and Improvements 764,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,675,000      
Accumulated Depreciation (254,000)      
Arby's [Member] | Merritt Island, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 297,000      
Buildings, Fixtures and Improvements 552,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 849,000      
Accumulated Depreciation (175,000)      
Arby's [Member] | Orlando, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 251,000      
Buildings, Fixtures and Improvements 585,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 836,000      
Accumulated Depreciation (186,000)      
Arby's [Member] | Rockledge, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 381,000      
Buildings, Fixtures and Improvements 571,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 952,000      
Accumulated Depreciation (181,000)      
Arby's [Member] | Savannah, GA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 293,000      
Buildings, Fixtures and Improvements 293,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 586,000      
Accumulated Depreciation (93,000)      
Arby's [Member] | Fort Wayne, IN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 529,000      
Buildings, Fixtures and Improvements 647,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,176,000      
Accumulated Depreciation (205,000)      
Arby's [Member] | Winchester, IN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 341,000      
Buildings, Fixtures and Improvements 511,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 852,000      
Accumulated Depreciation (162,000)      
Arby's [Member] | Memphis, TN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 449,000      
Buildings, Fixtures and Improvements 835,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,284,000      
Accumulated Depreciation (265,000)      
Arby's [Member] | Amarillo, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 260,000      
Buildings, Fixtures and Improvements 627,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 887,000      
Accumulated Depreciation (206,000)      
Arby's [Member] | Phoenix, AZ [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 559,000      
Buildings, Fixtures and Improvements 618,000      
Costs Capitalized Subsequent to Acquisition 200,000      
Gross Amount Carried at December 31, 2019 1,377,000      
Accumulated Depreciation (219,000)      
Arby's [Member] | Arvada, CO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 190,000      
Buildings, Fixtures and Improvements 1,465,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,655,000      
Accumulated Depreciation (482,000)      
N/A - Billboard [Member] | Memphis, TN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 33,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 33,000      
Accumulated Depreciation 0      
N/A - Billboard [Member] | Memphis, TN 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 63,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 63,000      
Accumulated Depreciation 0      
N/A - Billboard [Member] | Memphis, TN 3 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 73,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 73,000      
Accumulated Depreciation 0      
N/A - Billboard [Member] | Memphis, TN 4 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 90,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 90,000      
Accumulated Depreciation 0      
Burger King [Member] | Denver, CO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 872,000      
Buildings, Fixtures and Improvements 1,242,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,114,000      
Accumulated Depreciation (412,000)      
Burger King [Member] | Defuniak Springs, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 362,000      
Buildings, Fixtures and Improvements 1,087,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,449,000      
Accumulated Depreciation (345,000)      
Burger King [Member] | Sierra Vista, AZ [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 260,000      
Buildings, Fixtures and Improvements 1,041,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,301,000      
Accumulated Depreciation (330,000)      
Burger King [Member] | Cut Off, LA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 726,000      
Buildings, Fixtures and Improvements 1,088,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,814,000      
Accumulated Depreciation (345,000)      
Burger King [Member] | Gonzales, LA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 380,000      
Buildings, Fixtures and Improvements 465,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 845,000      
Accumulated Depreciation (148,000)      
Burger King [Member] | Lake Charles, LA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 456,000      
Buildings, Fixtures and Improvements 456,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 912,000      
Accumulated Depreciation (145,000)      
Burger King [Member] | Lake Charles, LA 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 610,000      
Buildings, Fixtures and Improvements 746,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,356,000      
Accumulated Depreciation (237,000)      
Burger King [Member] | Metairie, LA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 728,000      
Buildings, Fixtures and Improvements 392,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,120,000      
Accumulated Depreciation (124,000)      
Burger King [Member] | Opelousas, LA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 964,000      
Buildings, Fixtures and Improvements 964,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,928,000      
Accumulated Depreciation (306,000)      
Burger King [Member] | Raceland, LA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 356,000      
Buildings, Fixtures and Improvements 533,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 889,000      
Accumulated Depreciation (169,000)      
Burger King [Member] | Belding, MI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 221,000      
Buildings, Fixtures and Improvements 411,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 632,000      
Accumulated Depreciation (130,000)      
Burger King [Member] | Warren, MI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 248,000      
Buildings, Fixtures and Improvements 745,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 993,000      
Accumulated Depreciation (237,000)      
Burger King [Member] | Kansas City, MO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 444,000      
Buildings, Fixtures and Improvements 1,036,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,480,000      
Accumulated Depreciation (329,000)      
Burger King [Member] | Asheville, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 728,000      
Buildings, Fixtures and Improvements 595,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,323,000      
Accumulated Depreciation (189,000)      
Burger King [Member] | Irondequoit, NY [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 988,000      
Buildings, Fixtures and Improvements 659,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,647,000      
Accumulated Depreciation (209,000)      
Burger King [Member] | Syracuse, NY [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 606,000      
Buildings, Fixtures and Improvements 606,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,212,000      
Accumulated Depreciation (192,000)      
Burger King [Member] | Mansfield, OH [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 191,000      
Buildings, Fixtures and Improvements 766,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 957,000      
Accumulated Depreciation (243,000)      
Burger King [Member] | New Philadelphia, OH [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 419,000      
Buildings, Fixtures and Improvements 779,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,198,000      
Accumulated Depreciation (247,000)      
Burger King [Member] | Tucson, AZ [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 300,000      
Buildings, Fixtures and Improvements 1,307,000      
Costs Capitalized Subsequent to Acquisition 250,000      
Gross Amount Carried at December 31, 2019 1,857,000      
Accumulated Depreciation (446,000)      
Burger King [Member] | Grenada, MS [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 536,000      
Buildings, Fixtures and Improvements 805,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,341,000      
Accumulated Depreciation (255,000)      
Burger King [Member] | Detroit, MI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 614,000      
Buildings, Fixtures and Improvements 331,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 945,000      
Accumulated Depreciation (105,000)      
Burger King [Member] | Greenville, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 420,000      
Buildings, Fixtures and Improvements 571,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 991,000      
Accumulated Depreciation (188,000)      
Burger King [Member] | Largo, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 683,000      
Buildings, Fixtures and Improvements 412,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,095,000      
Accumulated Depreciation (137,000)      
Burger King [Member] | Augusta, GA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 693,000      
Buildings, Fixtures and Improvements 2,080,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,773,000      
Accumulated Depreciation (660,000)      
Cashland [Member] | Celina, OH [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 108,000      
Buildings, Fixtures and Improvements 132,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 240,000      
Accumulated Depreciation (45,000)      
Checkers [Member] | Orlando, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,033,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,033,000      
Accumulated Depreciation 0      
Checkers [Member] | Miami, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 621,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 621,000      
Accumulated Depreciation 0      
Checkers [Member] | Jacksonville, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 731,000      
Buildings, Fixtures and Improvements 1,096,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,827,000      
Accumulated Depreciation (348,000)      
Checkers [Member] | Tampa, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 736,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 736,000      
Accumulated Depreciation 0      
Jeremiah's Italian Ice [Member] | Winter Springs, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 734,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 734,000      
Accumulated Depreciation 0      
Chili's [Member] | Amarillo, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 811,000      
Buildings, Fixtures and Improvements 1,893,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,704,000      
Accumulated Depreciation (650,000)      
Denny's [Member] | Mesa, AZ [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,089,000      
Buildings, Fixtures and Improvements 891,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,980,000      
Accumulated Depreciation (306,000)      
Denny's [Member] | Phoenix, AZ [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 825,000      
Buildings, Fixtures and Improvements 1,237,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,062,000      
Accumulated Depreciation (425,000)      
Denny's [Member] | Tempe, AZ 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,567,000      
Buildings, Fixtures and Improvements 844,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,411,000      
Accumulated Depreciation (290,000)      
Denny's [Member] | Henrietta, NY [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 361,000      
Buildings, Fixtures and Improvements 241,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 602,000      
Accumulated Depreciation (83,000)      
Denny's [Member] | Greenville, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 570,000      
Buildings, Fixtures and Improvements 554,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,124,000      
Accumulated Depreciation (184,000)      
Denny's [Member] | Bloomington, MN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,184,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,184,000      
Accumulated Depreciation 0      
Eegee's [Member] | Tucson, AZ [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 357,000      
Buildings, Fixtures and Improvements 436,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 793,000      
Accumulated Depreciation (138,000)      
Golden Corral [Member] | Texarkana, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 758,000      
Buildings, Fixtures and Improvements 3,031,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 3,789,000      
Accumulated Depreciation (962,000)      
Golden Corral [Member] | Tulsa, OK [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 280,000      
Buildings, Fixtures and Improvements 3,890,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 4,170,000      
Accumulated Depreciation (1,293,000)      
Golden Corral [Member] | Beckley, WV [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,248,000      
Buildings, Fixtures and Improvements 2,258,000      
Costs Capitalized Subsequent to Acquisition (2,508,000)      
Gross Amount Carried at December 31, 2019 998,000      
Accumulated Depreciation (151,000)      
Grandy's [Member] | Dallas, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 725,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 725,000      
Accumulated Depreciation 0      
Grandy's [Member] | Dallas, TX 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 357,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 357,000      
Accumulated Depreciation 0      
Grandy's [Member] | Greenville, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 847,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 847,000      
Accumulated Depreciation 0      
Hardee's [Member] | Jacksonville, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 875,000      
Buildings, Fixtures and Improvements 583,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,458,000      
Accumulated Depreciation (185,000)      
Hardee's [Member] | Chester, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 586,000      
Buildings, Fixtures and Improvements 563,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,149,000      
Accumulated Depreciation (157,000)      
IHOP [Member] | Castle Rock, CO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 320,000      
Buildings, Fixtures and Improvements 2,334,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,654,000      
Accumulated Depreciation (776,000)      
IHOP [Member] | Kansas City, MO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 630,000      
Buildings, Fixtures and Improvements 1,002,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,632,000      
Accumulated Depreciation (333,000)      
IHOP [Member] | Killeen, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 380,000      
Buildings, Fixtures and Improvements 1,028,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,408,000      
Accumulated Depreciation (342,000)      
IHOP [Member] | Corpus Christi, TX 2 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,176,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,176,000      
Accumulated Depreciation 0      
IHOP [Member] | Anderson, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 0      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 1,000      
Gross Amount Carried at December 31, 2019 1,000      
Accumulated Depreciation 0      
IHOP [Member] | Greenville, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 610,000      
Buildings, Fixtures and Improvements 1,551,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,161,000      
Accumulated Depreciation (516,000)      
IHOP [Member] | Greeley, CO [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 120,000      
Buildings, Fixtures and Improvements 1,538,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,658,000      
Accumulated Depreciation (511,000)      
Jack in the Box [Member] | Sacramento, CA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 476,000      
Buildings, Fixtures and Improvements 1,110,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,586,000      
Accumulated Depreciation (352,000)      
Jack in the Box [Member] | San Antonio, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 400,000      
Buildings, Fixtures and Improvements 1,244,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,644,000      
Accumulated Depreciation (409,000)      
Jack in the Box [Member] | Houston, TX 4 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 390,000      
Buildings, Fixtures and Improvements 1,172,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,562,000      
Accumulated Depreciation (385,000)      
Jack in the Box [Member] | Houston, TX 5 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 330,000      
Buildings, Fixtures and Improvements 1,845,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,175,000      
Accumulated Depreciation (606,000)      
Jack in the Box [Member] | Houston, TX 6 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 410,000      
Buildings, Fixtures and Improvements 1,621,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,031,000      
Accumulated Depreciation (533,000)      
Taqueria El Rodeo de Jalisco [Member] | San Antonio, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 168,000      
Buildings, Fixtures and Improvements 206,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 374,000      
Accumulated Depreciation (65,000)      
Mattress Firm [Member] | Johnstown, PA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 389,000      
Buildings, Fixtures and Improvements 906,000      
Costs Capitalized Subsequent to Acquisition 745,000      
Gross Amount Carried at December 31, 2019 2,040,000      
Accumulated Depreciation (364,000)      
Monterey's Tex Mex [Member] | Tulsa, OK [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 135,000      
Buildings, Fixtures and Improvements 406,000      
Costs Capitalized Subsequent to Acquisition (326,000)      
Gross Amount Carried at December 31, 2019 215,000      
Accumulated Depreciation (28,000)      
Mezcal Mexican Restaurant [Member] | Grafton, OH [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 64,000      
Buildings, Fixtures and Improvements 191,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 255,000      
Accumulated Depreciation (66,000)      
Pizza Hut/WingStreet [Member] | Columbia, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 881,000      
Buildings, Fixtures and Improvements 588,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,469,000      
Accumulated Depreciation (186,000)      
Pizza Hut/WingStreet [Member] | Bowling Green, OH [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 141,000      
Buildings, Fixtures and Improvements 262,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 403,000      
Accumulated Depreciation (83,000)      
Pizza Hut/WingStreet [Member] | Amarillo, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 339,000      
Buildings, Fixtures and Improvements 1,016,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,355,000      
Accumulated Depreciation (323,000)      
Pizza Hut/WingStreet [Member] | Page, AZ [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 66,000      
Buildings, Fixtures and Improvements 263,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 329,000      
Accumulated Depreciation (84,000)      
Pizza Hut/WingStreet [Member] | Dearborn, MI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 284,000      
Buildings, Fixtures and Improvements 528,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 812,000      
Accumulated Depreciation (168,000)      
Pizza Hut/WingStreet [Member] | Beckley, WV [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 160,000      
Buildings, Fixtures and Improvements 131,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 291,000      
Accumulated Depreciation (42,000)      
Pizza Hut/WingStreet [Member] | Waupaca, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 61,000      
Buildings, Fixtures and Improvements 91,000      
Costs Capitalized Subsequent to Acquisition 35,000      
Gross Amount Carried at December 31, 2019 187,000      
Accumulated Depreciation (44,000)      
Pizza Hut/WingStreet [Member] | Huntington, WV [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 190,000      
Buildings, Fixtures and Improvements 4,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 194,000      
Accumulated Depreciation (1,000)      
Pizza Hut/WingStreet [Member] | Middleburg Heights, OH [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 128,000      
Buildings, Fixtures and Improvements 156,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 284,000      
Accumulated Depreciation (50,000)      
Pizza Hut/WingStreet [Member] | Sandusky, OH [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 140,000      
Buildings, Fixtures and Improvements 171,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 311,000      
Accumulated Depreciation (54,000)      
Pizza Hut/WingStreet [Member] | Stamford, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 38,000      
Buildings, Fixtures and Improvements 115,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 153,000      
Accumulated Depreciation (36,000)      
Pizza Hut/WingStreet [Member] | Kanab, UT [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 52,000      
Buildings, Fixtures and Improvements 210,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 262,000      
Accumulated Depreciation (67,000)      
Pizza Hut/WingStreet [Member] | Abbotsford, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 159,000      
Buildings, Fixtures and Improvements 195,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 354,000      
Accumulated Depreciation (62,000)      
Pizza Hut/WingStreet [Member] | Antigo, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 45,000      
Buildings, Fixtures and Improvements 252,000      
Costs Capitalized Subsequent to Acquisition 100,000      
Gross Amount Carried at December 31, 2019 397,000      
Accumulated Depreciation (102,000)      
Pizza Hut/WingStreet [Member] | Clintonville, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 208,000      
Buildings, Fixtures and Improvements 69,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 277,000      
Accumulated Depreciation (22,000)      
Pizza Hut/WingStreet [Member] | Eagle River, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 28,000      
Buildings, Fixtures and Improvements 159,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 187,000      
Accumulated Depreciation (50,000)      
Pizza Hut/WingStreet [Member] | Hayward, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 51,000      
Buildings, Fixtures and Improvements 205,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 256,000      
Accumulated Depreciation (65,000)      
Pizza Hut/WingStreet [Member] | Merrill, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 83,000      
Buildings, Fixtures and Improvements 531,000      
Costs Capitalized Subsequent to Acquisition (100,000)      
Gross Amount Carried at December 31, 2019 514,000      
Accumulated Depreciation (130,000)      
Pizza Hut/WingStreet [Member] | Neillsville, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 35,000      
Buildings, Fixtures and Improvements 106,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 141,000      
Accumulated Depreciation (34,000)      
Pizza Hut/WingStreet [Member] | Plover, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 85,000      
Buildings, Fixtures and Improvements 199,000      
Costs Capitalized Subsequent to Acquisition 100,000      
Gross Amount Carried at December 31, 2019 384,000      
Accumulated Depreciation (84,000)      
Pizza Hut/WingStreet [Member] | Stevens Point, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 130,000      
Buildings, Fixtures and Improvements 390,000      
Costs Capitalized Subsequent to Acquisition 100,000      
Gross Amount Carried at December 31, 2019 620,000      
Accumulated Depreciation (148,000)      
Pizza Hut/WingStreet [Member] | Tomahawk, WI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 35,000      
Buildings, Fixtures and Improvements 81,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 116,000      
Accumulated Depreciation (26,000)      
Popeyes [Member] | Orlando, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 782,000      
Buildings, Fixtures and Improvements 955,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,737,000      
Accumulated Depreciation (303,000)      
Popeyes [Member] | Miami, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 220,000      
Buildings, Fixtures and Improvements 330,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 550,000      
Accumulated Depreciation (105,000)      
Popeyes [Member] | Jacksonville, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 781,000      
Buildings, Fixtures and Improvements 955,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,736,000      
Accumulated Depreciation (303,000)      
Popeyes [Member] | Houston, TX 4 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 295,000      
Buildings, Fixtures and Improvements 241,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 536,000      
Accumulated Depreciation (76,000)      
Popeyes [Member] | Houston, TX 5 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 111,000      
Buildings, Fixtures and Improvements 166,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 277,000      
Accumulated Depreciation (53,000)      
Popeyes [Member] | Houston, TX 6 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 278,000      
Buildings, Fixtures and Improvements 227,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 505,000      
Accumulated Depreciation (72,000)      
Popeyes [Member] | Grenada, MS [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 77,000      
Buildings, Fixtures and Improvements 458,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 535,000      
Accumulated Depreciation (144,000)      
Popeyes [Member] | Tampa, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 216,000      
Buildings, Fixtures and Improvements 508,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 724,000      
Accumulated Depreciation (160,000)      
Popeyes [Member] | Lakeland, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 830,000      
Buildings, Fixtures and Improvements 830,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,660,000      
Accumulated Depreciation (263,000)      
Popeyes [Member] | Winter Haven, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 484,000      
Buildings, Fixtures and Improvements 1,001,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,485,000      
Accumulated Depreciation (332,000)      
Quincy's Family Steakhouse [Member] | Monroe, NC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 560,000      
Buildings, Fixtures and Improvements 458,000      
Costs Capitalized Subsequent to Acquisition (246,000)      
Gross Amount Carried at December 31, 2019 772,000      
Accumulated Depreciation (83,000)      
Mr. & Mrs. Crab Seafood [Member] | Orlando, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,286,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition (114,000)      
Gross Amount Carried at December 31, 2019 1,172,000      
Accumulated Depreciation (31,000)      
Shoney's [Member] | Grenada, MS [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 270,000      
Buildings, Fixtures and Improvements 809,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,079,000      
Accumulated Depreciation (257,000)      
Steak 'n Shake [Member] | Tampa, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 951,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 785,000      
Gross Amount Carried at December 31, 2019 1,736,000      
Accumulated Depreciation (107,000)      
Taco Bell [Member] | Foley, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 360,000      
Buildings, Fixtures and Improvements 1,460,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,820,000      
Accumulated Depreciation (480,000)      
Taco Bell [Member] | Mobile, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 160,000      
Buildings, Fixtures and Improvements 1,973,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,133,000      
Accumulated Depreciation (648,000)      
Taco Bell [Member] | Dallas, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 400,000      
Buildings, Fixtures and Improvements 1,225,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,625,000      
Accumulated Depreciation (403,000)      
Taco Bell [Member] | Jacksonville, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 440,000      
Buildings, Fixtures and Improvements 1,167,000      
Costs Capitalized Subsequent to Acquisition (1,020,000)      
Gross Amount Carried at December 31, 2019 587,000      
Accumulated Depreciation 0      
Taco Bell [Member] | Detroit, MI [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 124,000      
Buildings, Fixtures and Improvements 704,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 828,000      
Accumulated Depreciation (223,000)      
Taco Bell [Member] | Augusta, GA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 220,000      
Buildings, Fixtures and Improvements 1,292,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,512,000      
Accumulated Depreciation (425,000)      
Waffle House [Member] | Cocoa, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 150,000      
Buildings, Fixtures and Improvements 279,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 429,000      
Accumulated Depreciation (89,000)      
Wendy's [Member] | Columbia, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,368,000      
Buildings, Fixtures and Improvements 0      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,368,000      
Accumulated Depreciation (76,000)      
Wendy's [Member] | San Antonio, TX 6 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 703,000      
Buildings, Fixtures and Improvements 45,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 748,000      
Accumulated Depreciation (26,000)      
Wendy's [Member] | Nashville, TN [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 592,000      
Buildings, Fixtures and Improvements 1,100,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,692,000      
Accumulated Depreciation (349,000)      
Wendy's [Member] | Batesville, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 155,000      
Buildings, Fixtures and Improvements 878,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,033,000      
Accumulated Depreciation (279,000)      
Wendy's [Member] | Little Rock, AR [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 278,000      
Buildings, Fixtures and Improvements 878,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,156,000      
Accumulated Depreciation (291,000)      
Wendy's [Member] | Melbourne, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 550,000      
Buildings, Fixtures and Improvements 680,000      
Costs Capitalized Subsequent to Acquisition 1,000      
Gross Amount Carried at December 31, 2019 1,231,000      
Accumulated Depreciation (226,000)      
Wendy's [Member] | Bowling Green, OH [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 502,000      
Buildings, Fixtures and Improvements 932,000      
Costs Capitalized Subsequent to Acquisition (926,000)      
Gross Amount Carried at December 31, 2019 508,000      
Accumulated Depreciation (67,000)      
Wendy's [Member] | Merritt Island, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 720,000      
Buildings, Fixtures and Improvements 589,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,309,000      
Accumulated Depreciation (187,000)      
Wendy's [Member] | Savannah, GA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 720,000      
Buildings, Fixtures and Improvements 720,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,440,000      
Accumulated Depreciation (229,000)      
Wendy's [Member] | San Antonio, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 268,000      
Buildings, Fixtures and Improvements 630,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 898,000      
Accumulated Depreciation (209,000)      
Wendy's [Member] | Little Rock, AR 4 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 501,000      
Buildings, Fixtures and Improvements 500,000      
Costs Capitalized Subsequent to Acquisition 1,000      
Gross Amount Carried at December 31, 2019 1,002,000      
Accumulated Depreciation (159,000)      
Wendy's [Member] | Little Rock, AR 5 [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 773,000      
Buildings, Fixtures and Improvements 773,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,546,000      
Accumulated Depreciation (245,000)      
Wendy's [Member] | Groton, CT [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,099,000      
Buildings, Fixtures and Improvements 900,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,999,000      
Accumulated Depreciation (285,000)      
Wendy's [Member] | Anderson, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 734,000      
Buildings, Fixtures and Improvements 897,000      
Costs Capitalized Subsequent to Acquisition (1,169,000)      
Gross Amount Carried at December 31, 2019 462,000      
Accumulated Depreciation (34,000)      
Wendy's [Member] | Greenville, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 516,000      
Buildings, Fixtures and Improvements 631,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,147,000      
Accumulated Depreciation (200,000)      
Wendy's [Member] | N. Myrtle Beach, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 464,000      
Buildings, Fixtures and Improvements 861,000      
Costs Capitalized Subsequent to Acquisition 142,000      
Gross Amount Carried at December 31, 2019 1,467,000      
Accumulated Depreciation (273,000)      
Wendy's [Member] | Spartanburg, SC [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 699,000      
Buildings, Fixtures and Improvements 572,000      
Costs Capitalized Subsequent to Acquisition (818,000)      
Gross Amount Carried at December 31, 2019 453,000      
Accumulated Depreciation (13,000)      
Wendy's [Member] | Port Orange, FL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 695,000      
Buildings, Fixtures and Improvements 569,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,264,000      
Accumulated Depreciation (181,000)      
Wendy's [Member] | Fairburn, GA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,076,000      
Buildings, Fixtures and Improvements 1,316,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 2,392,000      
Accumulated Depreciation (418,000)      
Wendy's [Member] | Auburn, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 718,000      
Buildings, Fixtures and Improvements 1,333,000      
Costs Capitalized Subsequent to Acquisition 1,000      
Gross Amount Carried at December 31, 2019 2,052,000      
Accumulated Depreciation (423,000)      
Wendy's [Member] | Phenix City, AL [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 529,000      
Buildings, Fixtures and Improvements 1,178,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,707,000      
Accumulated Depreciation (391,000)      
Filiberto's [Member] | Payson, AZ [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 679,000      
Buildings, Fixtures and Improvements 829,000      
Costs Capitalized Subsequent to Acquisition (719,000)      
Gross Amount Carried at December 31, 2019 789,000      
Accumulated Depreciation (46,000)      
Whataburger [Member] | Ingleside, TX [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 1,106,000      
Buildings, Fixtures and Improvements 474,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,580,000      
Accumulated Depreciation (150,000)      
Long John Silver's / A&W [Member] | Penn Hills, PA [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances at December 31, 2019 0      
Land 438,000      
Buildings, Fixtures and Improvements 656,000      
Costs Capitalized Subsequent to Acquisition 0      
Gross Amount Carried at December 31, 2019 1,094,000      
Accumulated Depreciation $ (208,000)