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Schedule III Real Estate and Accumulated Depreciation Schedule III Real Estate and Accumulated Depreciation (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation $ 18,873,000 $ 11,648,000
Real Estate and Accumulated Depreciation, Amount of Encumbrances 141,000  
Land 34,345,000 18,489,000
Buildings, fixtures and improvements 205,930,000 107,340,000
Real Estate, Federal Income Tax Basis 0  
Real Estate, Gross 240,221,000  
Gains (Losses) on Sales of Other Real Estate 114,392,000  
Business Acquisition, Purchase Price Allocation, Tangible Assets 240,221,000 125,829,000
Real Estate Accumulated Depreciation, Depreciation Expense 7,225,000  
Real Estate Investments, Acquired Intangible Assets, Total 17,400,000  
Finite-Lived Intangible Assets, Accumulated Amortization 5,400,000  
Business Acquisition, Cost of Acquired Entity, Purchase Price 1,200,000  
Caro, Mi [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 40,000  
Real Estate, Gross 782,000  
Charlotte, MI [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 42,000  
Real Estate, Federal Income Tax Basis 0  
Real Estate, Gross 820,000  
Flint, MI [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 32,000  
Real Estate, Gross 667,000  
Livonia, MI [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 38,000  
Real Estate, Gross 839,000  
Livonia, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 281,000  
Real Estate, Gross 1,737,000  
SS Marie, MI [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 41,000  
Real Estate, Gross 746,000  
Ypsilanti, MI [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 29,000  
Real Estate, Gross 568,000  
Alton, TX [Member] | Advance Auto II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 9,000  
Real Estate, Gross 1,127,000  
Bardstown, KY [Member] | Advance Auto III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 5,000  
Real Estate, Gross 1,362,000  
Brandenburg, KY [Member] | Advance Auto III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 3,000  
Real Estate, Gross 928,000  
Hardinsburg, KY [Member] | Advance Auto III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 4,000  
Real Estate, Gross 939,000  
Leitchfield, KY [Member] | Advance Auto III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 4,000  
Real Estate, Gross 1,043,000  
Albany, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 0  
Real Estate, Gross 839,000  
Hazlehurst, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 0  
Real Estate, Gross 564,000  
Hinesville, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 0  
Real Estate, Gross 782,000  
Thomasville, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 0  
Real Estate, Gross 628,000  
Dothan, AL [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 0  
Real Estate, Gross 652,000  
Enterprise, AL [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 0  
Real Estate, Gross 700,000  
Perry, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 0  
Real Estate, Gross 696,000  
Cairo, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 0  
Real Estate, Gross 465,000  
Springfield, OH [Member] | Advance Auto V [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 0  
Real Estate, Gross 1,534,000  
Higganum, CT [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 178,000  
Real Estate, Gross 1,142,000  
New London, CT [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 98,000  
Real Estate, Gross 628,000  
Smyrna, DE [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 171,000  
Real Estate, Gross 1,219,000  
Wilmington, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 268,000  
Real Estate, Gross 2,202,000  
Chicago, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 276,000  
Real Estate, Gross 1,778,000  
Chicago II, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 198,000  
Real Estate, Gross 1,273,000  
Lyons, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 222,000  
Real Estate, Gross 1,426,000  
Elmwood Park, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 376,000  
Real Estate, Gross 2,872,000  
Alsip, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 234,000  
Real Estate, Gross 1,506,000  
Evergreen Park, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 173,000  
Real Estate, Gross 1,111,000  
Clinton Township, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 606,000  
Real Estate, Gross 3,824,000  
Southfield, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 299,000  
Real Estate, Gross 1,888,000  
Richmond, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 181,000  
Real Estate, Gross 1,119,000  
St. Clair Shores, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 332,000  
Real Estate, Gross 2,057,000  
Lathrup Village, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 293,000  
Real Estate, Gross 1,885,000  
Warren, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 184,000  
Real Estate, Gross 1,187,000  
Warren, MI [Member] | Walgreens III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 15,000  
Real Estate, Gross 3,739,000  
Dearborn, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 353,000  
Real Estate, Gross 2,895,000  
Dearborn II, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 313,000  
Real Estate, Gross 2,569,000  
Detroit, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 121,000  
Real Estate, Gross 748,000  
Detroit, MI [Member] | Family Dollar III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 5,000  
Real Estate, Gross 1,299,000  
Highland Park, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 161,000  
Real Estate, Gross 998,000  
Detroit II, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 220,000  
Real Estate, Gross 1,363,000  
Harper Woods, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 222,000  
Real Estate, Gross 1,378,000  
Grosse Pointe, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 408,000  
Real Estate, Gross 2,732,000  
Utica, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 375,000  
Real Estate, Gross 2,509,000  
Pittsfield, NH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 166,000  
Real Estate, Gross 1,068,000  
Rollinsford, NH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 81,000  
Real Estate, Gross 522,000  
Albany, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 189,000  
Real Estate, Gross 1,547,000  
Johnstown, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 132,000  
Real Estate, Gross 1,086,000  
Schenectady, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 237,000  
Real Estate, Gross 1,947,000  
Vails Gate, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 231,000  
Real Estate, Gross 1,894,000  
Whitehall, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 86,000  
Real Estate, Gross 706,000  
Greene, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 176,000  
Real Estate, Gross 1,443,000  
Whitesboro, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 106,000  
Real Estate, Gross 869,000  
Amherst (Buffalo), NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 208,000  
Real Estate, Gross 1,586,000  
East Aurora, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 142,000  
Real Estate, Gross 1,081,000  
Rochester, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 145,000  
Real Estate, Gross 1,109,000  
Port Jervis, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 134,000  
Real Estate, Gross 954,000  
Mentor, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 185,000  
Real Estate, Gross 1,189,000  
Northfield, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 329,000  
Real Estate, Gross 2,114,000  
Willoughby, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 409,000  
Real Estate, Gross 2,634,000  
Cleveland, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 263,000  
Real Estate, Gross 1,596,000  
Cleveland II, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 230,000  
Real Estate, Gross 1,400,000  
Cleveland III, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 200,000  
Real Estate, Gross 1,213,000  
Lakewood, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 159,000  
Real Estate, Gross 1,307,000  
Rocky River, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 230,000  
Real Estate, Federal Income Tax Basis 0  
Real Estate, Gross 1,885,000  
Broadview Heights, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 188,000  
Real Estate, Gross 1,341,000  
Boardman, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 308,000  
Real Estate, Gross 1,869,000  
Brunswick, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 205,000  
Real Estate, Gross 1,243,000  
Wadsworth, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 173,000  
Real Estate, Gross 1,051,000  
Alliance, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 224,000  
Real Estate, Gross 1,360,000  
Louisville, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 209,000  
Real Estate, Gross 1,271,000  
Massillon, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 314,000  
Real Estate, Gross 1,911,000  
Massillon II, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 233,000  
Real Estate, Gross 1,414,000  
Ambridge, PA [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 175,000  
Real Estate, Gross 1,432,000  
Monesson, PA [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 161,000  
Real Estate, Gross 1,321,000  
Narberth, PA [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 341,000  
Real Estate, Gross 2,801,000  
Poultney, VT [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 140,000  
Real Estate, Gross 996,000  
St. Albans, VT [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 132,000  
Real Estate, Gross 939,000  
White River Junction, VT [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 171,000  
Real Estate, Gross 1,222,000  
Alpharetta, GA [Member] | CVS [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 13,000  
Real Estate, Gross 1,430,000  
Vidalia, GA [Member] | CVS [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 17,000  
Real Estate, Gross 1,473,000  
Nashville, TN [Member] | CVS [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 17,000  
Real Estate, Gross 1,351,000  
Bella Vista, AR [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 20,000  
Real Estate, Gross 431,000  
Carlisle, AR [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 16,000  
Real Estate, Gross 258,000  
Green Forest, AR [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 19,000  
Real Estate, Gross 345,000  
Jonesboro, IL [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 20,000  
Real Estate, Gross 386,000  
Appleton City, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 8,000  
Real Estate, Gross 146,000  
Ash Grove, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 21,000  
Real Estate, Gross 350,000  
Ashland, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 26,000  
Real Estate, Gross 468,000  
Bernie, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 21,000  
Real Estate, Gross 349,000  
Bloomfield, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 14,000  
Real Estate, Gross 232,000  
Carterville, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 13,000  
Real Estate, Gross 202,000  
Clarkton, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 23,000  
Real Estate, Gross 373,000  
Diamond, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 11,000  
Real Estate, Gross 219,000  
Ellisnore, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 38,000  
Real Estate, Gross 609,000  
Hallsville, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 17,000  
Real Estate, Gross 292,000  
Lawson, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 11,000  
Real Estate, Gross 191,000  
Linbourne, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 36,000  
Real Estate, Gross 616,000  
Qulin, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 38,000  
Real Estate, Gross 603,000  
Steele, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 39,000  
Real Estate, Gross 629,000  
Strafford, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 30,000  
Real Estate, Gross 512,000  
Commerce, OK [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 22,000  
Real Estate, Gross 379,000  
Ash Flat, AR [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 4,000  
Real Estate, Gross 176,000  
Flippin, AZ [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 2,000  
Real Estate, Gross 117,000  
Panama City [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 7,000  
Real Estate, Gross 397,000  
Caney, KS [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 5,000  
Real Estate, Gross 209,000  
Clever, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 15,000  
Real Estate, Gross 678,000  
Concordia, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 5,000  
Real Estate, Gross 201,000  
Greenfield, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 11,000  
Real Estate, Gross 420,000  
Humansville, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 8,000  
Real Estate, Gross 346,000  
Oak Grove, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 3,000  
Real Estate, Gross 133,000  
Palmya, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 6,000  
Real Estate, Federal Income Tax Basis 0  
Real Estate, Gross 265,000  
Senath, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 16,000  
Real Estate, Gross 613,000  
Seneca, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 5,000  
Real Estate, Gross 236,000  
St. James, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 7,000  
Real Estate, Gross 325,000  
Willow Springs, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 6,000  
Real Estate, Gross 237,000  
Winona, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 4,000  
Real Estate, Gross 207,000  
Nowata, OK [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 4,000  
Real Estate, Gross 171,000  
Brookston, IN [Member] | Family Dollar [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 10,000  
Real Estate, Gross 841,000  
Lenox, GA [Member] | Family Dollar II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 8,000  
Real Estate, Gross 899,000  
Chillicothe, OH [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 46,000  
Real Estate, Gross 1,427,000  
Evansville, IN [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 95,000  
Real Estate, Gross 3,326,000  
Kankakee, IL [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 39,000  
Real Estate, Gross 1,298,000  
London, KY [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 38,000  
Real Estate, Gross 1,272,000  
Mt. Vernon, IL [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 45,000  
Real Estate, Gross 1,481,000  
Mt. Pleasant, PA [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 65,000  
Real Estate, Gross 2,268,000  
Chico, CA [Member] | Fedex II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 28,000  
Real Estate, Gross 3,084,000  
Warsaw, NC [Member] | Frensenius [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 11,000  
Real Estate, Gross 1,503,000  
Freeport, NY [Member] | GSA I [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 185,000  
Real Estate, Gross 4,215,000  
Plattsburg, NY [Member] | GSA, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 126,000  
Real Estate, Gross 5,080,000  
Mobile, AL [Member] | GSA III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 140,000  
Real Estate, Gross 5,363,000  
Warren, PA [Member] | GSA IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 84,000  
Real Estate, Gross 3,407,000  
Gloucester, VA [Member] | GSA V [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 45,000  
Real Estate, Gross 1,915,000  
Columbia, SC [Member] | Home Depot [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 2,088,000  
Real Estate and Accumulated Depreciation, Amount of Encumbrances 13,850  
Real Estate, Federal Income Tax Basis 0  
Real Estate, Gross 18,374,000  
Columbus, OH [Member] | Iron Mountian [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 56,000  
Real Estate, Gross 4,047,000  
Davenport, IA [Member] | John Deere [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 785,000  
Real Estate, Gross 23,213,000  
Dallas, TX [Member] | Mrs. Baird's [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 124,000  
Real Estate, Gross 4,530,000  
Chester, NJ [Member] | Reckitt Benckiser [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 128,000  
Real Estate, Gross 8,858,000  
Tampa, FL [Member] | Reckitt Benckiser [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate and Accumulated Depreciation, Amount of Encumbrances 5,500  
Tampa, FL [Member] | Synovus Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 0  
Real Estate, Gross 3,282,000  
Rio Grande City, TX [Member] | Tractor Supply [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 26,000  
Real Estate, Gross 1,564,000  
Myrtle Beach, SC [Member] | Walgreens [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 125,000  
Real Estate, Gross 2,077,000  
Eastpointe, MI [Member] | Walgreens II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 147,000  
Real Estate, Gross 3,340,000  
Troy, MI [Member] | Walgreens IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate Accumulated Depreciation 9,000  
Real Estate, Gross 1,896,000  
Assets at cost [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 34,345,000  
Buildings, fixtures and improvements 205,876,000  
Assets at cost [Member] | Caro, Mi [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 117,000  
Buildings, fixtures and improvements 665,000  
Assets at cost [Member] | Charlotte, MI [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 123,000  
Buildings, fixtures and improvements 697,000  
Assets at cost [Member] | Flint, MI [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 133,000  
Buildings, fixtures and improvements 534,000  
Assets at cost [Member] | Livonia, MI [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 210,000  
Buildings, fixtures and improvements 629,000  
Assets at cost [Member] | Livonia, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 261,000  
Buildings, fixtures and improvements 1,476,000  
Assets at cost [Member] | SS Marie, MI [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 75,000  
Buildings, fixtures and improvements 671,000  
Assets at cost [Member] | Ypsilanti, MI [Member] | Advance Auto [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 85,000  
Buildings, fixtures and improvements 483,000  
Assets at cost [Member] | Alton, TX [Member] | Advance Auto II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 169,000  
Buildings, fixtures and improvements 958,000  
Assets at cost [Member] | Bardstown, KY [Member] | Advance Auto III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 272,000  
Buildings, fixtures and improvements 1,090,000  
Assets at cost [Member] | Brandenburg, KY [Member] | Advance Auto III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 186,000  
Buildings, fixtures and improvements 742,000  
Assets at cost [Member] | Hardinsburg, KY [Member] | Advance Auto III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 94,000  
Buildings, fixtures and improvements 845,000  
Assets at cost [Member] | Leitchfield, KY [Member] | Advance Auto III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 104,000  
Buildings, fixtures and improvements 939,000  
Assets at cost [Member] | Albany, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 210,000  
Buildings, fixtures and improvements 629,000  
Assets at cost [Member] | Hazlehurst, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 113,000  
Buildings, fixtures and improvements 451,000  
Assets at cost [Member] | Hinesville, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 352,000  
Buildings, fixtures and improvements 430,000  
Assets at cost [Member] | Thomasville, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 251,000  
Buildings, fixtures and improvements 377,000  
Assets at cost [Member] | Dothan, AL [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 326,000  
Buildings, fixtures and improvements 326,000  
Assets at cost [Member] | Enterprise, AL [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 280,000  
Buildings, fixtures and improvements 420,000  
Assets at cost [Member] | Perry, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 209,000  
Buildings, fixtures and improvements 487,000  
Assets at cost [Member] | Cairo, GA [Member] | Advance Auto IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 140,000  
Buildings, fixtures and improvements 325,000  
Assets at cost [Member] | Springfield, OH [Member] | Advance Auto V [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 460,000  
Buildings, fixtures and improvements 1,074,000  
Assets at cost [Member] | Higganum, CT [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 171,000  
Buildings, fixtures and improvements 971,000  
Assets at cost [Member] | New London, CT [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 94,000  
Buildings, fixtures and improvements 534,000  
Assets at cost [Member] | Smyrna, DE [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 183,000  
Buildings, fixtures and improvements 1,036,000  
Assets at cost [Member] | Wilmington, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 330,000  
Buildings, fixtures and improvements 1,872,000  
Assets at cost [Member] | Chicago, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 267,000  
Buildings, fixtures and improvements 1,511,000  
Assets at cost [Member] | Chicago II, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 191,000  
Buildings, fixtures and improvements 1,082,000  
Assets at cost [Member] | Lyons, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 214,000  
Buildings, fixtures and improvements 1,212,000  
Assets at cost [Member] | Elmwood Park, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 431,000  
Buildings, fixtures and improvements 2,441,000  
Assets at cost [Member] | Alsip, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 226,000  
Buildings, fixtures and improvements 1,280,000  
Assets at cost [Member] | Evergreen Park, IL [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 167,000  
Buildings, fixtures and improvements 944,000  
Assets at cost [Member] | Clinton Township, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 574,000  
Buildings, fixtures and improvements 3,250,000  
Assets at cost [Member] | Southfield, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 283,000  
Buildings, fixtures and improvements 1,605,000  
Assets at cost [Member] | Richmond, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 168,000  
Buildings, fixtures and improvements 951,000  
Assets at cost [Member] | St. Clair Shores, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 309,000  
Buildings, fixtures and improvements 1,748,000  
Assets at cost [Member] | Lathrup Village, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 283,000  
Buildings, fixtures and improvements 1,602,000  
Assets at cost [Member] | Warren, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 178,000  
Buildings, fixtures and improvements 1,009,000  
Assets at cost [Member] | Warren, MI [Member] | Walgreens III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 748,000  
Buildings, fixtures and improvements 2,991,000  
Assets at cost [Member] | Dearborn, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 434,000  
Buildings, fixtures and improvements 2,461,000  
Assets at cost [Member] | Dearborn II, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 385,000  
Buildings, fixtures and improvements 2,184,000  
Assets at cost [Member] | Detroit, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 112,000  
Buildings, fixtures and improvements 636,000  
Assets at cost [Member] | Detroit, MI [Member] | Family Dollar III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 130,000  
Buildings, fixtures and improvements 1,169,000  
Assets at cost [Member] | Highland Park, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 150,000  
Buildings, fixtures and improvements 848,000  
Assets at cost [Member] | Detroit II, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 204,000  
Buildings, fixtures and improvements 1,159,000  
Assets at cost [Member] | Harper Woods, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 207,000  
Buildings, fixtures and improvements 1,171,000  
Assets at cost [Member] | Grosse Pointe, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 410,000  
Buildings, fixtures and improvements 2,322,000  
Assets at cost [Member] | Utica, MI [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 376,000  
Buildings, fixtures and improvements 2,133,000  
Assets at cost [Member] | Pittsfield, NH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 160,000  
Buildings, fixtures and improvements 908,000  
Assets at cost [Member] | Rollinsford, NH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 78,000  
Buildings, fixtures and improvements 444,000  
Assets at cost [Member] | Albany, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 232,000  
Buildings, fixtures and improvements 1,315,000  
Assets at cost [Member] | Johnstown, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 163,000  
Buildings, fixtures and improvements 923,000  
Assets at cost [Member] | Schenectady, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 292,000  
Buildings, fixtures and improvements 1,655,000  
Assets at cost [Member] | Vails Gate, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 284,000  
Buildings, fixtures and improvements 1,610,000  
Assets at cost [Member] | Whitehall, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 106,000  
Buildings, fixtures and improvements 600,000  
Assets at cost [Member] | Greene, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 216,000  
Buildings, fixtures and improvements 1,227,000  
Assets at cost [Member] | Whitesboro, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 130,000  
Buildings, fixtures and improvements 739,000  
Assets at cost [Member] | Amherst (Buffalo), NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 238,000  
Buildings, fixtures and improvements 1,348,000  
Assets at cost [Member] | East Aurora, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 162,000  
Buildings, fixtures and improvements 919,000  
Assets at cost [Member] | Rochester, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 166,000  
Buildings, fixtures and improvements 943,000  
Assets at cost [Member] | Port Jervis, NY [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 143,000  
Buildings, fixtures and improvements 811,000  
Assets at cost [Member] | Mentor, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 178,000  
Buildings, fixtures and improvements 1,011,000  
Assets at cost [Member] | Northfield, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 317,000  
Buildings, fixtures and improvements 1,797,000  
Assets at cost [Member] | Willoughby, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 395,000  
Buildings, fixtures and improvements 2,239,000  
Assets at cost [Member] | Cleveland, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 239,000  
Buildings, fixtures and improvements 1,357,000  
Assets at cost [Member] | Cleveland II, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 210,000  
Buildings, fixtures and improvements 1,190,000  
Assets at cost [Member] | Cleveland III, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 182,000  
Buildings, fixtures and improvements 1,031,000  
Assets at cost [Member] | Lakewood, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 196,000  
Buildings, fixtures and improvements 1,111,000  
Assets at cost [Member] | Rocky River, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 283,000  
Buildings, fixtures and improvements 1,602,000  
Assets at cost [Member] | Broadview Heights, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 201,000  
Buildings, fixtures and improvements 1,140,000  
Assets at cost [Member] | Boardman, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 280,000  
Buildings, fixtures and improvements 1,589,000  
Assets at cost [Member] | Brunswick, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 186,000  
Buildings, fixtures and improvements 1,057,000  
Assets at cost [Member] | Wadsworth, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 158,000  
Buildings, fixtures and improvements 893,000  
Assets at cost [Member] | Alliance, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 204,000  
Buildings, fixtures and improvements 1,156,000  
Assets at cost [Member] | Louisville, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 191,000  
Buildings, fixtures and improvements 1,080,000  
Assets at cost [Member] | Massillon, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 287,000  
Buildings, fixtures and improvements 1,624,000  
Assets at cost [Member] | Massillon II, OH [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 212,000  
Buildings, fixtures and improvements 1,202,000  
Assets at cost [Member] | Ambridge, PA [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 215,000  
Buildings, fixtures and improvements 1,217,000  
Assets at cost [Member] | Monesson, PA [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 198,000  
Buildings, fixtures and improvements 1,123,000  
Assets at cost [Member] | Narberth, PA [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 420,000  
Buildings, fixtures and improvements 2,381,000  
Assets at cost [Member] | Poultney, VT [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 149,000  
Buildings, fixtures and improvements 847,000  
Assets at cost [Member] | St. Albans, VT [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 141,000  
Buildings, fixtures and improvements 798,000  
Assets at cost [Member] | White River Junction, VT [Member] | Citizens Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 183,000  
Buildings, fixtures and improvements 1,039,000  
Assets at cost [Member] | Alpharetta, GA [Member] | CVS [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 572,000  
Buildings, fixtures and improvements 858,000  
Assets at cost [Member] | Vidalia, GA [Member] | CVS [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 368,000  
Buildings, fixtures and improvements 1,105,000  
Assets at cost [Member] | Nashville, TN [Member] | CVS [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 203,000  
Buildings, fixtures and improvements 1,148,000  
Assets at cost [Member] | Bella Vista, AR [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 129,000  
Buildings, fixtures and improvements 302,000  
Assets at cost [Member] | Carlisle, AR [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 13,000  
Buildings, fixtures and improvements 245,000  
Assets at cost [Member] | Green Forest, AR [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 52,000  
Buildings, fixtures and improvements 293,000  
Assets at cost [Member] | Jonesboro, IL [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 77,000  
Buildings, fixtures and improvements 309,000  
Assets at cost [Member] | Appleton City, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 22,000  
Buildings, fixtures and improvements 124,000  
Assets at cost [Member] | Ash Grove, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 35,000  
Buildings, fixtures and improvements 315,000  
Assets at cost [Member] | Ashland, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 70,000  
Buildings, fixtures and improvements 398,000  
Assets at cost [Member] | Bernie, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 35,000  
Buildings, fixtures and improvements 314,000  
Assets at cost [Member] | Bloomfield, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 23,000  
Buildings, fixtures and improvements 209,000  
Assets at cost [Member] | Carterville, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 10,000  
Buildings, fixtures and improvements 192,000  
Assets at cost [Member] | Clarkton, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 19,000  
Buildings, fixtures and improvements 354,000  
Assets at cost [Member] | Diamond, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 44,000  
Buildings, fixtures and improvements 175,000  
Assets at cost [Member] | Ellisnore, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 30,000  
Buildings, fixtures and improvements 579,000  
Assets at cost [Member] | Hallsville, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 29,000  
Buildings, fixtures and improvements 263,000  
Assets at cost [Member] | Lawson, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 29,000  
Buildings, fixtures and improvements 162,000  
Assets at cost [Member] | Linbourne, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 62,000  
Buildings, fixtures and improvements 554,000  
Assets at cost [Member] | Qulin, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 30,000  
Buildings, fixtures and improvements 573,000  
Assets at cost [Member] | Steele, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 31,000  
Buildings, fixtures and improvements 598,000  
Assets at cost [Member] | Strafford, MO [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 51,000  
Buildings, fixtures and improvements 461,000  
Assets at cost [Member] | Commerce, OK [Member] | Dollar General [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 38,000  
Buildings, fixtures and improvements 341,000  
Assets at cost [Member] | Ash Flat, AR [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 44,000  
Buildings, fixtures and improvements 132,000  
Assets at cost [Member] | Flippin, AZ [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 53,000  
Buildings, fixtures and improvements 64,000  
Assets at cost [Member] | Panama City [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 139,000  
Buildings, fixtures and improvements 258,000  
Assets at cost [Member] | Caney, KS [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 31,000  
Buildings, fixtures and improvements 178,000  
Assets at cost [Member] | Clever, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 136,000  
Buildings, fixtures and improvements 542,000  
Assets at cost [Member] | Concordia, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 40,000  
Buildings, fixtures and improvements 161,000  
Assets at cost [Member] | Greenfield, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 42,000  
Buildings, fixtures and improvements 378,000  
Assets at cost [Member] | Humansville, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 69,000  
Buildings, fixtures and improvements 277,000  
Assets at cost [Member] | Oak Grove, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 27,000  
Buildings, fixtures and improvements 106,000  
Assets at cost [Member] | Palmya, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 40,000  
Buildings, fixtures and improvements 225,000  
Assets at cost [Member] | Senath, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 61,000  
Buildings, fixtures and improvements 552,000  
Assets at cost [Member] | Seneca, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 47,000  
Buildings, fixtures and improvements 189,000  
Assets at cost [Member] | St. James, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 81,000  
Buildings, fixtures and improvements 244,000  
Assets at cost [Member] | Willow Springs, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 24,000  
Buildings, fixtures and improvements 213,000  
Assets at cost [Member] | Winona, MO [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 52,000  
Buildings, fixtures and improvements 155,000  
Assets at cost [Member] | Nowata, OK [Member] | Dollar General, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 43,000  
Buildings, fixtures and improvements 128,000  
Assets at cost [Member] | Brookston, IN [Member] | Family Dollar [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 126,000  
Buildings, fixtures and improvements 715,000  
Assets at cost [Member] | Lenox, GA [Member] | Family Dollar II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 90,000  
Buildings, fixtures and improvements 809,000  
Assets at cost [Member] | Chillicothe, OH [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 143,000  
Buildings, fixtures and improvements 1,284,000  
Assets at cost [Member] | Evansville, IN [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 665,000  
Buildings, fixtures and improvements 2,661,000  
Assets at cost [Member] | Kankakee, IL [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 195,000  
Buildings, fixtures and improvements 1,103,000  
Assets at cost [Member] | London, KY [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 191,000  
Buildings, fixtures and improvements 1,081,000  
Assets at cost [Member] | Mt. Vernon, IL [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 222,000  
Buildings, fixtures and improvements 1,259,000  
Assets at cost [Member] | Mt. Pleasant, PA [Member] | FedEx [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 454,000  
Buildings, fixtures and improvements 1,814,000  
Assets at cost [Member] | Chico, CA [Member] | Fedex II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 308,000  
Buildings, fixtures and improvements 2,776,000  
Assets at cost [Member] | Warsaw, NC [Member] | Frensenius [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 75,000  
Buildings, fixtures and improvements 1,428,000  
Assets at cost [Member] | Freeport, NY [Member] | GSA I [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 843,000  
Buildings, fixtures and improvements 3,372,000  
Assets at cost [Member] | Plattsburg, NY [Member] | GSA, II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 508,000  
Buildings, fixtures and improvements 4,572,000  
Assets at cost [Member] | Mobile, AL [Member] | GSA III [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 268,000  
Buildings, fixtures and improvements 5,095,000  
Assets at cost [Member] | Warren, PA [Member] | GSA IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 341,000  
Buildings, fixtures and improvements 3,066,000  
Assets at cost [Member] | Gloucester, VA [Member] | GSA V [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 287,000  
Buildings, fixtures and improvements 1,628,000  
Assets at cost [Member] | Columbia, SC [Member] | Home Depot [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 2,911,000  
Buildings, fixtures and improvements 15,463,000  
Assets at cost [Member] | Columbus, OH [Member] | Iron Mountian [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 405,000  
Buildings, fixtures and improvements 3,642,000  
Assets at cost [Member] | Davenport, IA [Member] | John Deere [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 1,161,000  
Buildings, fixtures and improvements 22,052,000  
Assets at cost [Member] | Dallas, TX [Member] | Mrs. Baird's [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 453,000  
Buildings, fixtures and improvements 4,077,000  
Assets at cost [Member] | Chester, NJ [Member] | Reckitt Benckiser [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 886,000  
Buildings, fixtures and improvements 7,972,000  
Assets at cost [Member] | Tampa, FL [Member] | Synovus Bank [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 985,000  
Buildings, fixtures and improvements 2,297,000  
Assets at cost [Member] | Rio Grande City, TX [Member] | Tractor Supply [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 469,000  
Buildings, fixtures and improvements 1,095,000  
Assets at cost [Member] | Myrtle Beach, SC [Member] | Walgreens [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 0  
Buildings, fixtures and improvements 2,077,000  
Assets at cost [Member] | Eastpointe, MI [Member] | Walgreens II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 668,000  
Buildings, fixtures and improvements 2,672,000  
Assets at cost [Member] | Troy, MI [Member] | Walgreens IV [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Land 0  
Buildings, fixtures and improvements 1,896,000  
Line of Credit [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity 150,000,000  
Real Estate and Accumulated Depreciation, Amount of Encumbrances 124,600,000  
Mortgage Notes Payable [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate and Accumulated Depreciation, Amount of Encumbrances 160,000  
Mortgage Notes Payable [Member] | Multi Tenant [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate and Accumulated Depreciation, Amount of Encumbrances 4,500,000  
Mortgage Notes Payable [Member] | Multi Tenant II [Member]
    
Real Estate and Accumulated Depreciation [Line Items]    
Real Estate and Accumulated Depreciation, Amount of Encumbrances $ 11,900,000