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Schedule III - Real Estate and Accumulated Depreciation (Triple-net) (Details) - USD ($)
$ in Thousands
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]        
Initial Cost of Encumbrances $ 2,993,341      
Initial Cost of Land 3,428,034      
Initial Cost of Building & Improvements 30,427,473      
Cost Capitalized Subsequent to Acquisition 2,583,182      
Carrying Amount of Land 3,486,620      
Carrying Amount of Building and Improvements 32,541,295      
Accumulated Depreciation 5,715,459 $ 5,499,958 $ 4,838,370 $ 4,093,494
Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 306,038      
Initial Cost of Land 1,036,151      
Initial Cost of Building & Improvements 7,894,992      
Cost Capitalized Subsequent to Acquisition 351,136      
Carrying Amount of Land 1,057,708      
Carrying Amount of Building and Improvements 8,224,571      
Accumulated Depreciation 1,272,903      
Triple-net | Abilene, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 950      
Initial Cost of Building & Improvements 20,987      
Cost Capitalized Subsequent to Acquisition 11,660      
Carrying Amount of Land 950      
Carrying Amount of Building and Improvements 32,647      
Accumulated Depreciation 3,442      
Triple-net | Abilene, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 990      
Initial Cost of Building & Improvements 8,187      
Cost Capitalized Subsequent to Acquisition 1,089      
Carrying Amount of Land 990      
Carrying Amount of Building and Improvements 9,276      
Accumulated Depreciation 1,262      
Triple-net | Aboite Twp, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,770      
Initial Cost of Building & Improvements 19,930      
Cost Capitalized Subsequent to Acquisition 1,601      
Carrying Amount of Land 1,770      
Carrying Amount of Building and Improvements 21,531      
Accumulated Depreciation 5,178      
Triple-net | Agawam, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 880      
Initial Cost of Building & Improvements 16,112      
Cost Capitalized Subsequent to Acquisition 2,134      
Carrying Amount of Land 880      
Carrying Amount of Building and Improvements 18,246      
Accumulated Depreciation 8,476      
Triple-net | Akron, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 633      
Initial Cost of Building & Improvements 3,003      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 633      
Carrying Amount of Building and Improvements 3,003      
Accumulated Depreciation 121      
Triple-net | Alexandria, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,452      
Initial Cost of Building & Improvements 6,829      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,452      
Carrying Amount of Building and Improvements 6,829      
Accumulated Depreciation 267      
Triple-net | Alhambra, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 600      
Initial Cost of Building & Improvements 6,305      
Cost Capitalized Subsequent to Acquisition 8,847      
Carrying Amount of Land 600      
Carrying Amount of Building and Improvements 15,152      
Accumulated Depreciation 2,322      
Triple-net | Allen Park, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,767      
Initial Cost of Building & Improvements 5,027      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,767      
Carrying Amount of Building and Improvements 5,027      
Accumulated Depreciation 199      
Triple-net | Allentown, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 494      
Initial Cost of Building & Improvements 11,849      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 494      
Carrying Amount of Building and Improvements 11,849      
Accumulated Depreciation 457      
Triple-net | Allentown, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,491      
Initial Cost of Building & Improvements 4,823      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,491      
Carrying Amount of Building and Improvements 4,823      
Accumulated Depreciation 195      
Triple-net | Ames, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 330      
Initial Cost of Building & Improvements 8,870      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 330      
Carrying Amount of Building and Improvements 8,870      
Accumulated Depreciation 2,314      
Triple-net | Ann Arbor, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,172      
Initial Cost of Building & Improvements 11,127      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,172      
Carrying Amount of Building and Improvements 11,127      
Accumulated Depreciation 463      
Triple-net | Annandale, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,687      
Initial Cost of Building & Improvements 18,980      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,687      
Carrying Amount of Building and Improvements 18,980      
Accumulated Depreciation 716      
Triple-net | Arlington, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,016      
Initial Cost of Building & Improvements 8,805      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,016      
Carrying Amount of Building and Improvements 8,805      
Accumulated Depreciation 339      
Triple-net | Asheboro, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 290      
Initial Cost of Building & Improvements 5,032      
Cost Capitalized Subsequent to Acquisition 261      
Carrying Amount of Land 290      
Carrying Amount of Building and Improvements 5,293      
Accumulated Depreciation 2,265      
Triple-net | Asheville, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 204      
Initial Cost of Building & Improvements 3,489      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 204      
Carrying Amount of Building and Improvements 3,489      
Accumulated Depreciation 1,938      
Triple-net | Asheville, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 280      
Initial Cost of Building & Improvements 1,955      
Cost Capitalized Subsequent to Acquisition 518      
Carrying Amount of Land 280      
Carrying Amount of Building and Improvements 2,473      
Accumulated Depreciation 1,086      
Triple-net | Atchison, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 140      
Initial Cost of Building & Improvements 5,610      
Cost Capitalized Subsequent to Acquisition 23      
Carrying Amount of Land 140      
Carrying Amount of Building and Improvements 5,633      
Accumulated Depreciation 634      
Triple-net | Aurora, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,440      
Initial Cost of Building & Improvements 28,172      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,440      
Carrying Amount of Building and Improvements 28,172      
Accumulated Depreciation 12,556      
Triple-net | Austin, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,691      
Initial Cost of Building & Improvements 5,006      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,691      
Carrying Amount of Building and Improvements 5,006      
Accumulated Depreciation 257      
Triple-net | Avon, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,830      
Initial Cost of Building & Improvements 14,470      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,830      
Carrying Amount of Building and Improvements 14,470      
Accumulated Depreciation 3,942      
Triple-net | Avon, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 900      
Initial Cost of Building & Improvements 19,444      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 900      
Carrying Amount of Building and Improvements 19,444      
Accumulated Depreciation 2,896      
Triple-net | Avon, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,132      
Initial Cost of Building & Improvements 7,627      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,132      
Carrying Amount of Building and Improvements 7,627      
Accumulated Depreciation 359      
Triple-net | Azusa, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 570      
Initial Cost of Building & Improvements 3,141      
Cost Capitalized Subsequent to Acquisition 7,429      
Carrying Amount of Land 570      
Carrying Amount of Building and Improvements 10,570      
Accumulated Depreciation 3,172      
Triple-net | Baldwin City, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 190      
Initial Cost of Building & Improvements 4,810      
Cost Capitalized Subsequent to Acquisition 55      
Carrying Amount of Land 190      
Carrying Amount of Building and Improvements 4,865      
Accumulated Depreciation 560      
Triple-net | Baltimore, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,306      
Initial Cost of Building & Improvements 4,305      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,306      
Carrying Amount of Building and Improvements 4,305      
Accumulated Depreciation 181      
Triple-net | Baltimore, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,069      
Initial Cost of Building & Improvements 3,150      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,069      
Carrying Amount of Building and Improvements 3,150      
Accumulated Depreciation 141      
Triple-net | Barberton, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,307      
Initial Cost of Building & Improvements 9,313      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,307      
Carrying Amount of Building and Improvements 9,313      
Accumulated Depreciation 356      
Triple-net | Bartlesville, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 100      
Initial Cost of Building & Improvements 1,380      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 100      
Carrying Amount of Building and Improvements 1,380      
Accumulated Depreciation 860      
Triple-net | Battle Creek, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 857      
Initial Cost of Building & Improvements 1,822      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 857      
Carrying Amount of Building and Improvements 1,822      
Accumulated Depreciation 99      
Triple-net | Bay City, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 633      
Initial Cost of Building & Improvements 2,620      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 633      
Carrying Amount of Building and Improvements 2,620      
Accumulated Depreciation 115      
Triple-net | Bedford, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 637      
Initial Cost of Building & Improvements 4,434      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 637      
Carrying Amount of Building and Improvements 4,434      
Accumulated Depreciation 201      
Triple-net | Belmont, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,000      
Initial Cost of Building & Improvements 23,526      
Cost Capitalized Subsequent to Acquisition 1,653      
Carrying Amount of Land 3,000      
Carrying Amount of Building and Improvements 25,179      
Accumulated Depreciation 6,778      
Triple-net | Belvidere, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,001      
Initial Cost of Building & Improvements 26,191      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,001      
Carrying Amount of Building and Improvements 26,191      
Accumulated Depreciation 771      
Triple-net | Benbrook, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,550      
Initial Cost of Building & Improvements 13,553      
Cost Capitalized Subsequent to Acquisition 2,747      
Carrying Amount of Land 1,550      
Carrying Amount of Building and Improvements 16,300      
Accumulated Depreciation 3,242      
Triple-net | Berkeley, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 11,947      
Initial Cost of Land 3,050      
Initial Cost of Building & Improvements 32,677      
Cost Capitalized Subsequent to Acquisition 4,982      
Carrying Amount of Land 3,050      
Carrying Amount of Building and Improvements 37,659      
Accumulated Depreciation 5,614      
Triple-net | Bethel Park, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,700      
Initial Cost of Building & Improvements 16,007      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,700      
Carrying Amount of Building and Improvements 16,007      
Accumulated Depreciation 4,712      
Triple-net | Bethel Park, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,008      
Initial Cost of Building & Improvements 6,742      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,008      
Carrying Amount of Building and Improvements 6,742      
Accumulated Depreciation 276      
Triple-net | Bethesda, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,218      
Initial Cost of Building & Improvements 6,871      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,218      
Carrying Amount of Building and Improvements 6,871      
Accumulated Depreciation 259      
Triple-net | Bethlehem, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,191      
Initial Cost of Building & Improvements 16,892      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,191      
Carrying Amount of Building and Improvements 16,892      
Accumulated Depreciation 620      
Triple-net | Bethlehem, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,143      
Initial Cost of Building & Improvements 13,592      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,143      
Carrying Amount of Building and Improvements 13,592      
Accumulated Depreciation 502      
Triple-net | Beverly Hills, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 6,000      
Initial Cost of Building & Improvements 13,385      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 6,000      
Carrying Amount of Building and Improvements 13,385      
Accumulated Depreciation 1,761      
Triple-net | Bexleyheath, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,750      
Initial Cost of Building & Improvements 10,807      
Cost Capitalized Subsequent to Acquisition 1,101      
Carrying Amount of Land 4,034      
Carrying Amount of Building and Improvements 11,624      
Accumulated Depreciation 1,567      
Triple-net | Bingham Farms, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 781      
Initial Cost of Building & Improvements 15,676      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 781      
Carrying Amount of Building and Improvements 15,676      
Accumulated Depreciation 597      
Triple-net | Birmingham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,647      
Initial Cost of Building & Improvements 14,853      
Cost Capitalized Subsequent to Acquisition 1,246      
Carrying Amount of Land 1,771      
Carrying Amount of Building and Improvements 15,975      
Accumulated Depreciation 1,964      
Triple-net | Birmingham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,591      
Initial Cost of Building & Improvements 19,092      
Cost Capitalized Subsequent to Acquisition 1,564      
Carrying Amount of Land 1,712      
Carrying Amount of Building and Improvements 20,535      
Accumulated Depreciation 2,488      
Triple-net | Birmingham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,462      
Initial Cost of Building & Improvements 9,056      
Cost Capitalized Subsequent to Acquisition 794      
Carrying Amount of Land 1,572      
Carrying Amount of Building and Improvements 9,740      
Accumulated Depreciation 1,216      
Triple-net | Birmingham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,184      
Initial Cost of Building & Improvements 10,085      
Cost Capitalized Subsequent to Acquisition 852      
Carrying Amount of Land 1,274      
Carrying Amount of Building and Improvements 10,847      
Accumulated Depreciation 1,324      
Triple-net | Bloomington, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 670      
Initial Cost of Building & Improvements 17,423      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 670      
Carrying Amount of Building and Improvements 17,423      
Accumulated Depreciation 2,146      
Triple-net | Boca Raton, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,200      
Initial Cost of Building & Improvements 4,976      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,200      
Carrying Amount of Building and Improvements 4,976      
Accumulated Depreciation 247      
Triple-net | Boca Raton, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,826      
Initial Cost of Building & Improvements 4,063      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,826      
Carrying Amount of Building and Improvements 4,063      
Accumulated Depreciation 180      
Triple-net | Boulder, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,601      
Initial Cost of Building & Improvements 21,371      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,601      
Carrying Amount of Building and Improvements 21,371      
Accumulated Depreciation 870      
Triple-net | Bournemouth, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,589      
Initial Cost of Building & Improvements 15,984      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,589      
Carrying Amount of Building and Improvements 15,984      
Accumulated Depreciation 44      
Triple-net | Boynton Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,138      
Initial Cost of Building & Improvements 10,204      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,138      
Carrying Amount of Building and Improvements 10,204      
Accumulated Depreciation 425      
Triple-net | Boynton Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,804      
Initial Cost of Building & Improvements 14,226      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,804      
Carrying Amount of Building and Improvements 14,226      
Accumulated Depreciation 541      
Triple-net | Bracknell, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,081      
Initial Cost of Building & Improvements 11,470      
Cost Capitalized Subsequent to Acquisition 217      
Carrying Amount of Land 4,246      
Carrying Amount of Building and Improvements 11,522      
Accumulated Depreciation 713      
Triple-net | Bradenton, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 252      
Initial Cost of Building & Improvements 3,298      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 252      
Carrying Amount of Building and Improvements 3,298      
Accumulated Depreciation 2,068      
Triple-net | Bradenton, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 480      
Initial Cost of Building & Improvements 9,953      
Cost Capitalized Subsequent to Acquisition 110      
Carrying Amount of Land 480      
Carrying Amount of Building and Improvements 10,063      
Accumulated Depreciation 1,978      
Triple-net | Braintree, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 170      
Initial Cost of Building & Improvements 7,157      
Cost Capitalized Subsequent to Acquisition 1,290      
Carrying Amount of Land 170      
Carrying Amount of Building and Improvements 8,447      
Accumulated Depreciation 8,444      
Triple-net | Braintree, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 13,296      
Cost Capitalized Subsequent to Acquisition 1,005      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 14,301      
Accumulated Depreciation 2,010      
Triple-net | Brecksville, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 990      
Initial Cost of Building & Improvements 19,353      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 990      
Carrying Amount of Building and Improvements 19,353      
Accumulated Depreciation 2,872      
Triple-net | Brentwood, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 34,515      
Initial Cost of Land 8,537      
Initial Cost of Building & Improvements 45,869      
Cost Capitalized Subsequent to Acquisition 4,443      
Carrying Amount of Land 9,182      
Carrying Amount of Building and Improvements 49,667      
Accumulated Depreciation 3,992      
Triple-net | Brick, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,290      
Initial Cost of Building & Improvements 25,247      
Cost Capitalized Subsequent to Acquisition 1,330      
Carrying Amount of Land 1,290      
Carrying Amount of Building and Improvements 26,577      
Accumulated Depreciation 5,851      
Triple-net | Bridgewater, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,800      
Initial Cost of Building & Improvements 31,810      
Cost Capitalized Subsequent to Acquisition 1,678      
Carrying Amount of Land 1,800      
Carrying Amount of Building and Improvements 33,488      
Accumulated Depreciation 7,340      
Triple-net | Bristol, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,256      
Initial Cost of Building & Improvements 17,962      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,256      
Carrying Amount of Building and Improvements 17,962      
Accumulated Depreciation 411      
Triple-net | Bristol, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,270      
Initial Cost of Building & Improvements 13,030      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,270      
Carrying Amount of Building and Improvements 13,030      
Accumulated Depreciation 183      
Triple-net | Brooks, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 1,747      
Initial Cost of Land 376      
Initial Cost of Building & Improvements 4,951      
Cost Capitalized Subsequent to Acquisition 370      
Carrying Amount of Land 401      
Carrying Amount of Building and Improvements 5,296      
Accumulated Depreciation 768      
Triple-net | Bucyrus, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,119      
Initial Cost of Building & Improvements 2,612      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,119      
Carrying Amount of Building and Improvements 2,612      
Accumulated Depreciation 122      
Triple-net | Burleson, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 670      
Initial Cost of Building & Improvements 13,985      
Cost Capitalized Subsequent to Acquisition 2,457      
Carrying Amount of Land 670      
Carrying Amount of Building and Improvements 16,442      
Accumulated Depreciation 3,430      
Triple-net | Burlington, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 280      
Initial Cost of Building & Improvements 4,297      
Cost Capitalized Subsequent to Acquisition 835      
Carrying Amount of Land 280      
Carrying Amount of Building and Improvements 5,132      
Accumulated Depreciation 2,157      
Triple-net | Burlington, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 460      
Initial Cost of Building & Improvements 5,467      
Cost Capitalized Subsequent to Acquisition 53      
Carrying Amount of Land 460      
Carrying Amount of Building and Improvements 5,520      
Accumulated Depreciation 2,400      
Triple-net | Burlington, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,700      
Initial Cost of Building & Improvements 12,554      
Cost Capitalized Subsequent to Acquisition 501      
Carrying Amount of Land 1,700      
Carrying Amount of Building and Improvements 13,055      
Accumulated Depreciation 3,652      
Triple-net | Burlington, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,170      
Initial Cost of Building & Improvements 19,205      
Cost Capitalized Subsequent to Acquisition 172      
Carrying Amount of Land 1,170      
Carrying Amount of Building and Improvements 19,377      
Accumulated Depreciation 4,657      
Triple-net | Burnaby, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 7,292      
Initial Cost of Land 7,623      
Initial Cost of Building & Improvements 13,844      
Cost Capitalized Subsequent to Acquisition 1,463      
Carrying Amount of Land 8,139      
Carrying Amount of Building and Improvements 14,791      
Accumulated Depreciation 2,177      
Triple-net | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 14,841      
Initial Cost of Land 2,341      
Initial Cost of Building & Improvements 42,768      
Cost Capitalized Subsequent to Acquisition 3,122      
Carrying Amount of Land 2,500      
Carrying Amount of Building and Improvements 45,731      
Accumulated Depreciation 6,386      
Triple-net | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 24,614      
Initial Cost of Land 4,569      
Initial Cost of Building & Improvements 70,199      
Cost Capitalized Subsequent to Acquisition 5,069      
Carrying Amount of Land 4,878      
Carrying Amount of Building and Improvements 74,959      
Accumulated Depreciation 10,375      
Triple-net | Camberley, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 9,974      
Initial Cost of Building & Improvements 39,168      
Cost Capitalized Subsequent to Acquisition 1,984      
Carrying Amount of Land 10,376      
Carrying Amount of Building and Improvements 40,750      
Accumulated Depreciation 2,725      
Triple-net | Camp Hill, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 517      
Initial Cost of Building & Improvements 3,597      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 517      
Carrying Amount of Building and Improvements 3,597      
Accumulated Depreciation 142      
Triple-net | Canonsburg, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 911      
Initial Cost of Building & Improvements 4,830      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 911      
Carrying Amount of Building and Improvements 4,830      
Accumulated Depreciation 207      
Triple-net | Canton, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 300      
Initial Cost of Building & Improvements 2,098      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 300      
Carrying Amount of Building and Improvements 2,098      
Accumulated Depreciation 1,165      
Triple-net | Canton, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,399      
Initial Cost of Building & Improvements 16,971      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,399      
Carrying Amount of Building and Improvements 16,971      
Accumulated Depreciation 644      
Triple-net | Cape Coral, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 530      
Initial Cost of Building & Improvements 3,281      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 530      
Carrying Amount of Building and Improvements 3,281      
Accumulated Depreciation 1,551      
Triple-net | Cape Coral, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 8,135      
Initial Cost of Land 760      
Initial Cost of Building & Improvements 18,868      
Cost Capitalized Subsequent to Acquisition 106      
Carrying Amount of Land 760      
Carrying Amount of Building and Improvements 18,974      
Accumulated Depreciation 3,788      
Triple-net | Cape May Court House, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,440      
Initial Cost of Building & Improvements 17,002      
Cost Capitalized Subsequent to Acquisition 1,775      
Carrying Amount of Land 1,440      
Carrying Amount of Building and Improvements 18,777      
Accumulated Depreciation 2,784      
Triple-net | Carlisle, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 978      
Initial Cost of Building & Improvements 8,207      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 978      
Carrying Amount of Building and Improvements 8,207      
Accumulated Depreciation 331      
Triple-net | Carmel, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,700      
Initial Cost of Building & Improvements 19,491      
Cost Capitalized Subsequent to Acquisition 1      
Carrying Amount of Land 1,700      
Carrying Amount of Building and Improvements 19,492      
Accumulated Depreciation 2,521      
Triple-net | Carmel, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,583      
Initial Cost of Building & Improvements 6,071      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,583      
Carrying Amount of Building and Improvements 6,071      
Accumulated Depreciation 263      
Triple-net | Carmel, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 2,296      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 2,296      
Accumulated Depreciation 82      
Triple-net | Carrollton, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,010      
Initial Cost of Building & Improvements 19,549      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,010      
Carrying Amount of Building and Improvements 19,549      
Accumulated Depreciation 1,724      
Triple-net | Cary, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,500      
Initial Cost of Building & Improvements 4,350      
Cost Capitalized Subsequent to Acquisition 1,051      
Carrying Amount of Land 1,500      
Carrying Amount of Building and Improvements 5,401      
Accumulated Depreciation 2,827      
Triple-net | Castleton, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 920      
Initial Cost of Building & Improvements 15,137      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 920      
Carrying Amount of Building and Improvements 15,137      
Accumulated Depreciation 2,343      
Triple-net | Cedar Grove, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,850      
Initial Cost of Building & Improvements 27,737      
Cost Capitalized Subsequent to Acquisition 20      
Carrying Amount of Land 2,850      
Carrying Amount of Building and Improvements 27,757      
Accumulated Depreciation 6,753      
Triple-net | Cedar Rapids, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 596      
Initial Cost of Building & Improvements 9,354      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 596      
Carrying Amount of Building and Improvements 9,354      
Accumulated Depreciation 348      
Triple-net | Centerville, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 920      
Initial Cost of Building & Improvements 3,960      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 920      
Carrying Amount of Building and Improvements 3,960      
Accumulated Depreciation 228      
Triple-net | Chagrin Falls, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 832      
Initial Cost of Building & Improvements 10,841      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 832      
Carrying Amount of Building and Improvements 10,841      
Accumulated Depreciation 431      
Triple-net | Chambersburg, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,373      
Initial Cost of Building & Improvements 8,864      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,373      
Carrying Amount of Building and Improvements 8,864      
Accumulated Depreciation 370      
Triple-net | Chapel Hill, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 354      
Initial Cost of Building & Improvements 2,646      
Cost Capitalized Subsequent to Acquisition 1,034      
Carrying Amount of Land 354      
Carrying Amount of Building and Improvements 3,680      
Accumulated Depreciation 1,587      
Triple-net | Charleston, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,333      
Initial Cost of Building & Improvements 5,556      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,333      
Carrying Amount of Building and Improvements 5,556      
Accumulated Depreciation 220      
Triple-net | Charleston, WV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 440      
Initial Cost of Building & Improvements 17,575      
Cost Capitalized Subsequent to Acquisition 306      
Carrying Amount of Land 440      
Carrying Amount of Building and Improvements 17,881      
Accumulated Depreciation 4,158      
Triple-net | Chatham, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 320      
Initial Cost of Building & Improvements 14,039      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 320      
Carrying Amount of Building and Improvements 14,039      
Accumulated Depreciation 2,222      
Triple-net | Cherry Hill, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,416      
Initial Cost of Building & Improvements 9,874      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,416      
Carrying Amount of Building and Improvements 9,874      
Accumulated Depreciation 408      
Triple-net | Chester, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,320      
Initial Cost of Building & Improvements 18,127      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,320      
Carrying Amount of Building and Improvements 18,127      
Accumulated Depreciation 2,844      
Triple-net | Chevy Chase, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,515      
Initial Cost of Building & Improvements 8,688      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,515      
Carrying Amount of Building and Improvements 8,688      
Accumulated Depreciation 338      
Triple-net | Chickasha, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 85      
Initial Cost of Building & Improvements 1,395      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 85      
Carrying Amount of Building and Improvements 1,395      
Accumulated Depreciation 863      
Triple-net | Chillicothe, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,145      
Initial Cost of Building & Improvements 8,997      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,145      
Carrying Amount of Building and Improvements 8,997      
Accumulated Depreciation 348      
Triple-net | Cincinnati, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 912      
Initial Cost of Building & Improvements 14,014      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 912      
Carrying Amount of Building and Improvements 14,014      
Accumulated Depreciation 550      
Triple-net | Citrus Heights, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,207      
Initial Cost of Building & Improvements 31,725      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 5,207      
Carrying Amount of Building and Improvements 31,725      
Accumulated Depreciation 1,172      
Triple-net | Claremore, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 155      
Initial Cost of Building & Improvements 1,427      
Cost Capitalized Subsequent to Acquisition 6,130      
Carrying Amount of Land 155      
Carrying Amount of Building and Improvements 7,557      
Accumulated Depreciation 1,783      
Triple-net | Clarksville, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 330      
Initial Cost of Building & Improvements 2,292      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 330      
Carrying Amount of Building and Improvements 2,292      
Accumulated Depreciation 1,267      
Triple-net | Clayton, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 520      
Initial Cost of Building & Improvements 15,733      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 520      
Carrying Amount of Building and Improvements 15,733      
Accumulated Depreciation 2,204      
Triple-net | Cleburne, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 520      
Initial Cost of Building & Improvements 5,369      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 520      
Carrying Amount of Building and Improvements 5,369      
Accumulated Depreciation 1,814      
Triple-net | Clevedon, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,838      
Initial Cost of Building & Improvements 16,927      
Cost Capitalized Subsequent to Acquisition 1,493      
Carrying Amount of Land 3,052      
Carrying Amount of Building and Improvements 18,206      
Accumulated Depreciation 2,558      
Triple-net | Cloquet, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 340      
Initial Cost of Building & Improvements 4,660      
Cost Capitalized Subsequent to Acquisition 120      
Carrying Amount of Land 340      
Carrying Amount of Building and Improvements 4,780      
Accumulated Depreciation 1,104      
Triple-net | Cobham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 9,808      
Initial Cost of Building & Improvements 24,991      
Cost Capitalized Subsequent to Acquisition 2,629      
Carrying Amount of Land 10,549      
Carrying Amount of Building and Improvements 26,879      
Accumulated Depreciation 4,507      
Triple-net | Colchester, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 980      
Initial Cost of Building & Improvements 4,860      
Cost Capitalized Subsequent to Acquisition 544      
Carrying Amount of Land 980      
Carrying Amount of Building and Improvements 5,404      
Accumulated Depreciation 1,636      
Triple-net | Colorado Springs, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,280      
Initial Cost of Building & Improvements 62,168      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,280      
Carrying Amount of Building and Improvements 62,168      
Accumulated Depreciation 6,926      
Triple-net | Colorado Springs, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,730      
Initial Cost of Building & Improvements 25,493      
Cost Capitalized Subsequent to Acquisition 693      
Carrying Amount of Land 1,730      
Carrying Amount of Building and Improvements 26,186      
Accumulated Depreciation 2,760      
Triple-net | Columbia, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 341      
Initial Cost of Building & Improvements 2,295      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 341      
Carrying Amount of Building and Improvements 2,295      
Accumulated Depreciation 1,271      
Triple-net | Columbia, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,699      
Initial Cost of Building & Improvements 2,320      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,699      
Carrying Amount of Building and Improvements 2,320      
Accumulated Depreciation 100      
Triple-net | Columbia Heights, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 825      
Initial Cost of Building & Improvements 14,175      
Cost Capitalized Subsequent to Acquisition 163      
Carrying Amount of Land 825      
Carrying Amount of Building and Improvements 14,338      
Accumulated Depreciation 3,117      
Triple-net | Columbus, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 610      
Initial Cost of Building & Improvements 3,190      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 610      
Carrying Amount of Building and Improvements 3,190      
Accumulated Depreciation 852      
Triple-net | Concord, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 550      
Initial Cost of Building & Improvements 3,921      
Cost Capitalized Subsequent to Acquisition 270      
Carrying Amount of Land 550      
Carrying Amount of Building and Improvements 4,191      
Accumulated Depreciation 1,871      
Triple-net | Concord, NH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,760      
Initial Cost of Building & Improvements 43,179      
Cost Capitalized Subsequent to Acquisition 634      
Carrying Amount of Land 1,760      
Carrying Amount of Building and Improvements 43,813      
Accumulated Depreciation 10,199      
Triple-net | Congleton, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,036      
Initial Cost of Building & Improvements 5,120      
Cost Capitalized Subsequent to Acquisition 540      
Carrying Amount of Land 2,189      
Carrying Amount of Building and Improvements 5,507      
Accumulated Depreciation 744      
Triple-net | Conroe, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 980      
Initial Cost of Building & Improvements 7,771      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 980      
Carrying Amount of Building and Improvements 7,771      
Accumulated Depreciation 2,193      
Triple-net | Coppell, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,550      
Initial Cost of Building & Improvements 8,386      
Cost Capitalized Subsequent to Acquisition 169      
Carrying Amount of Land 1,550      
Carrying Amount of Building and Improvements 8,555      
Accumulated Depreciation 1,609      
Triple-net | Corby, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,228      
Initial Cost of Building & Improvements 5,144      
Cost Capitalized Subsequent to Acquisition 672      
Carrying Amount of Land 1,204      
Carrying Amount of Building and Improvements 5,840      
Accumulated Depreciation 418      
Triple-net | Costa Mesa, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,050      
Initial Cost of Building & Improvements 19,969      
Cost Capitalized Subsequent to Acquisition 969      
Carrying Amount of Land 2,050      
Carrying Amount of Building and Improvements 20,938      
Accumulated Depreciation 5,806      
Triple-net | Coventry, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,962      
Initial Cost of Building & Improvements 13,830      
Cost Capitalized Subsequent to Acquisition 1,193      
Carrying Amount of Land 2,110      
Carrying Amount of Building and Improvements 14,875      
Accumulated Depreciation 1,885      
Triple-net | Crawfordsville, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 720      
Initial Cost of Building & Improvements 17,239      
Cost Capitalized Subsequent to Acquisition 1,426      
Carrying Amount of Land 720      
Carrying Amount of Building and Improvements 18,665      
Accumulated Depreciation 2,794      
Triple-net | Dallastown, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,377      
Initial Cost of Building & Improvements 16,802      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,377      
Carrying Amount of Building and Improvements 16,802      
Accumulated Depreciation 661      
Triple-net | Danville, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 410      
Initial Cost of Building & Improvements 3,954      
Cost Capitalized Subsequent to Acquisition 829      
Carrying Amount of Land 410      
Carrying Amount of Building and Improvements 4,783      
Accumulated Depreciation 2,072      
Triple-net | Danville, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 240      
Initial Cost of Building & Improvements 8,436      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 240      
Carrying Amount of Building and Improvements 8,436      
Accumulated Depreciation 1,352      
Triple-net | Daphne, AL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,880      
Initial Cost of Building & Improvements 8,670      
Cost Capitalized Subsequent to Acquisition 384      
Carrying Amount of Land 2,880      
Carrying Amount of Building and Improvements 9,054      
Accumulated Depreciation 1,884      
Triple-net | Davenport, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 566      
Initial Cost of Building & Improvements 2,017      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 566      
Carrying Amount of Building and Improvements 2,017      
Accumulated Depreciation 81      
Triple-net | Davenport, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 910      
Initial Cost of Building & Improvements 20,043      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 910      
Carrying Amount of Building and Improvements 20,043      
Accumulated Depreciation 766      
Triple-net | Dayton, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,188      
Initial Cost of Building & Improvements 5,414      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,188      
Carrying Amount of Building and Improvements 5,414      
Accumulated Depreciation 227      
Triple-net | Dearborn Heights, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,197      
Initial Cost of Building & Improvements 3,396      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,197      
Carrying Amount of Building and Improvements 3,396      
Accumulated Depreciation 157      
Triple-net | Decatur, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,413      
Initial Cost of Building & Improvements 13,800      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,413      
Carrying Amount of Building and Improvements 13,800      
Accumulated Depreciation 505      
Triple-net | Delray Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,158      
Initial Cost of Building & Improvements 13,576      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,158      
Carrying Amount of Building and Improvements 13,576      
Accumulated Depreciation 537      
Triple-net | Delray Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,125      
Initial Cost of Building & Improvements 11,844      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,125      
Carrying Amount of Building and Improvements 11,844      
Accumulated Depreciation 482      
Triple-net | Denton, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,760      
Initial Cost of Building & Improvements 8,305      
Cost Capitalized Subsequent to Acquisition 175      
Carrying Amount of Land 1,760      
Carrying Amount of Building and Improvements 8,480      
Accumulated Depreciation 2,060      
Triple-net | Denver, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,222      
Initial Cost of Building & Improvements 24,811      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,222      
Carrying Amount of Building and Improvements 24,811      
Accumulated Depreciation 912      
Triple-net | Derby, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,359      
Initial Cost of Building & Improvements 8,539      
Cost Capitalized Subsequent to Acquisition 441      
Carrying Amount of Land 2,455      
Carrying Amount of Building and Improvements 8,884      
Accumulated Depreciation 963      
Triple-net | Dover, DE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 600      
Initial Cost of Building & Improvements 22,266      
Cost Capitalized Subsequent to Acquisition 141      
Carrying Amount of Land 600      
Carrying Amount of Building and Improvements 22,407      
Accumulated Depreciation 5,331      
Triple-net | Dublin, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,393      
Initial Cost of Building & Improvements 2,912      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,393      
Carrying Amount of Building and Improvements 2,912      
Accumulated Depreciation 139      
Triple-net | Dubuque, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 568      
Initial Cost of Building & Improvements 8,904      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 568      
Carrying Amount of Building and Improvements 8,904      
Accumulated Depreciation 332      
Triple-net | Dunedin, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,883      
Initial Cost of Building & Improvements 13,329      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,883      
Carrying Amount of Building and Improvements 13,329      
Accumulated Depreciation 500      
Triple-net | Durham, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,476      
Initial Cost of Building & Improvements 10,659      
Cost Capitalized Subsequent to Acquisition 2,587      
Carrying Amount of Land 1,476      
Carrying Amount of Building and Improvements 13,246      
Accumulated Depreciation 12,451      
Triple-net | Eagan, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 16,186      
Initial Cost of Land 2,260      
Initial Cost of Building & Improvements 31,643      
Cost Capitalized Subsequent to Acquisition 300      
Carrying Amount of Land 2,260      
Carrying Amount of Building and Improvements 31,943      
Accumulated Depreciation 3,572      
Triple-net | East Brunswick, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,380      
Initial Cost of Building & Improvements 34,229      
Cost Capitalized Subsequent to Acquisition 1,093      
Carrying Amount of Land 1,380      
Carrying Amount of Building and Improvements 35,322      
Accumulated Depreciation 7,664      
Triple-net | Eastbourne, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,071      
Initial Cost of Building & Improvements 24,438      
Cost Capitalized Subsequent to Acquisition 2,154      
Carrying Amount of Land 4,379      
Carrying Amount of Building and Improvements 26,284      
Accumulated Depreciation 3,646      
Triple-net | Easton, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,109      
Initial Cost of Building & Improvements 7,502      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,109      
Carrying Amount of Building and Improvements 7,502      
Accumulated Depreciation 384      
Triple-net | Easton, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,430      
Initial Cost of Building & Improvements 13,400      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,430      
Carrying Amount of Building and Improvements 13,400      
Accumulated Depreciation 529      
Triple-net | Easton, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,620      
Initial Cost of Building & Improvements 10,052      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,620      
Carrying Amount of Building and Improvements 10,052      
Accumulated Depreciation 469      
Triple-net | Eden, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 390      
Initial Cost of Building & Improvements 4,877      
Cost Capitalized Subsequent to Acquisition 20      
Carrying Amount of Land 390      
Carrying Amount of Building and Improvements 4,897      
Accumulated Depreciation 2,162      
Triple-net | Edmond, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 410      
Initial Cost of Building & Improvements 8,388      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 410      
Carrying Amount of Building and Improvements 8,388      
Accumulated Depreciation 1,766      
Triple-net | Edmond, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,810      
Initial Cost of Building & Improvements 14,849      
Cost Capitalized Subsequent to Acquisition 3,260      
Carrying Amount of Land 1,810      
Carrying Amount of Building and Improvements 18,109      
Accumulated Depreciation 2,425      
Triple-net | Edmond, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,650      
Initial Cost of Building & Improvements 25,167      
Cost Capitalized Subsequent to Acquisition 1,700      
Carrying Amount of Land 1,650      
Carrying Amount of Building and Improvements 26,867      
Accumulated Depreciation 2,103      
Triple-net | Elizabeth City, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 200      
Initial Cost of Building & Improvements 2,760      
Cost Capitalized Subsequent to Acquisition 2,165      
Carrying Amount of Land 200      
Carrying Amount of Building and Improvements 4,925      
Accumulated Depreciation 2,376      
Triple-net | Elk Grove Village, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,344      
Initial Cost of Building & Improvements 7,076      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,344      
Carrying Amount of Building and Improvements 7,076      
Accumulated Depreciation 292      
Triple-net | Elk Grove Village, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,733      
Initial Cost of Building & Improvements 18,751      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,733      
Carrying Amount of Building and Improvements 18,751      
Accumulated Depreciation 685      
Triple-net | Encinitas, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,460      
Initial Cost of Building & Improvements 7,721      
Cost Capitalized Subsequent to Acquisition 1,987      
Carrying Amount of Land 1,460      
Carrying Amount of Building and Improvements 9,708      
Accumulated Depreciation 4,196      
Triple-net | Englewood, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 930      
Initial Cost of Building & Improvements 4,514      
Cost Capitalized Subsequent to Acquisition 26      
Carrying Amount of Land 930      
Carrying Amount of Building and Improvements 4,540      
Accumulated Depreciation 1,215      
Triple-net | Epsom, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 33,969      
Initial Cost of Land 20,159      
Initial Cost of Building & Improvements 34,803      
Cost Capitalized Subsequent to Acquisition 4,554      
Carrying Amount of Land 21,682      
Carrying Amount of Building and Improvements 37,834      
Accumulated Depreciation 3,062      
Triple-net | Escondido, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,520      
Initial Cost of Building & Improvements 24,024      
Cost Capitalized Subsequent to Acquisition 785      
Carrying Amount of Land 1,520      
Carrying Amount of Building and Improvements 24,809      
Accumulated Depreciation 6,863      
Triple-net | Eureka, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 50      
Initial Cost of Building & Improvements 3,950      
Cost Capitalized Subsequent to Acquisition 71      
Carrying Amount of Land 50      
Carrying Amount of Building and Improvements 4,021      
Accumulated Depreciation 453      
Triple-net | Everett, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,400      
Initial Cost of Building & Improvements 5,476      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,400      
Carrying Amount of Building and Improvements 5,476      
Accumulated Depreciation 2,950      
Triple-net | Exton, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,600      
Initial Cost of Building & Improvements 27,267      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,600      
Carrying Amount of Building and Improvements 27,267      
Accumulated Depreciation 1,193      
Triple-net | Fairfax, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,827      
Initial Cost of Building & Improvements 17,309      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,827      
Carrying Amount of Building and Improvements 17,309      
Accumulated Depreciation 690      
Triple-net | Fairfax, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,099      
Initial Cost of Building & Improvements 17,620      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,099      
Carrying Amount of Building and Improvements 17,620      
Accumulated Depreciation 687      
Triple-net | Fairhope, AL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 570      
Initial Cost of Building & Improvements 9,119      
Cost Capitalized Subsequent to Acquisition 112      
Carrying Amount of Land 570      
Carrying Amount of Building and Improvements 9,231      
Accumulated Depreciation 1,910      
Triple-net | Fall River, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 620      
Initial Cost of Building & Improvements 5,829      
Cost Capitalized Subsequent to Acquisition 4,856      
Carrying Amount of Land 620      
Carrying Amount of Building and Improvements 10,685      
Accumulated Depreciation 5,715      
Triple-net | Fanwood, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,850      
Initial Cost of Building & Improvements 55,175      
Cost Capitalized Subsequent to Acquisition 1,467      
Carrying Amount of Land 2,850      
Carrying Amount of Building and Improvements 56,642      
Accumulated Depreciation 12,133      
Triple-net | Faribault, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 780      
Initial Cost of Building & Improvements 11,539      
Cost Capitalized Subsequent to Acquisition 300      
Carrying Amount of Land 780      
Carrying Amount of Building and Improvements 11,839      
Accumulated Depreciation 1,269      
Triple-net | Farmington, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,693      
Initial Cost of Building & Improvements 10,459      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,693      
Carrying Amount of Building and Improvements 10,459      
Accumulated Depreciation 425      
Triple-net | Farnborough, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,036      
Initial Cost of Building & Improvements 5,737      
Cost Capitalized Subsequent to Acquisition 586      
Carrying Amount of Land 2,189      
Carrying Amount of Building and Improvements 6,170      
Accumulated Depreciation 810      
Triple-net | Fayetteville, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,150      
Initial Cost of Building & Improvements 32,951      
Cost Capitalized Subsequent to Acquisition 2,468      
Carrying Amount of Land 2,150      
Carrying Amount of Building and Improvements 35,419      
Accumulated Depreciation 4,037      
Triple-net | Fayetteville, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 410      
Initial Cost of Building & Improvements 3,962      
Cost Capitalized Subsequent to Acquisition 500      
Carrying Amount of Land 410      
Carrying Amount of Building and Improvements 4,462      
Accumulated Depreciation 2,080      
Triple-net | Findlay, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 200      
Initial Cost of Building & Improvements 1,800      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 200      
Carrying Amount of Building and Improvements 1,800      
Accumulated Depreciation 1,061      
Triple-net | Fishers, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,500      
Initial Cost of Building & Improvements 14,500      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,500      
Carrying Amount of Building and Improvements 14,500      
Accumulated Depreciation 3,949      
Triple-net | Fishersville, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 788      
Initial Cost of Building & Improvements 2,101      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 788      
Carrying Amount of Building and Improvements 2,101      
Accumulated Depreciation 672      
Triple-net | Flint, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,271      
Initial Cost of Building & Improvements 18,056      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,271      
Carrying Amount of Building and Improvements 18,056      
Accumulated Depreciation 668      
Triple-net | Florence, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 300      
Initial Cost of Building & Improvements 2,978      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 300      
Carrying Amount of Building and Improvements 2,978      
Accumulated Depreciation 1,403      
Triple-net | Flourtown, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,800      
Initial Cost of Building & Improvements 14,830      
Cost Capitalized Subsequent to Acquisition 266      
Carrying Amount of Land 1,800      
Carrying Amount of Building and Improvements 15,096      
Accumulated Depreciation 3,728      
Triple-net | Flower Mound, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,800      
Initial Cost of Building & Improvements 8,414      
Cost Capitalized Subsequent to Acquisition 174      
Carrying Amount of Land 1,800      
Carrying Amount of Building and Improvements 8,588      
Accumulated Depreciation 1,803      
Triple-net | Floyd, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 680      
Initial Cost of Building & Improvements 3,618      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 680      
Carrying Amount of Building and Improvements 3,618      
Accumulated Depreciation 463      
Triple-net | Flushing, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 690      
Initial Cost of Building & Improvements 1,702      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 690      
Carrying Amount of Building and Improvements 1,702      
Accumulated Depreciation 105      
Triple-net | Flushing, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,415      
Initial Cost of Building & Improvements 8,536      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,415      
Carrying Amount of Building and Improvements 8,536      
Accumulated Depreciation 347      
Triple-net | Forest City, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 320      
Initial Cost of Building & Improvements 4,497      
Cost Capitalized Subsequent to Acquisition 38      
Carrying Amount of Land 320      
Carrying Amount of Building and Improvements 4,535      
Accumulated Depreciation 2,007      
Triple-net | Fort Ashby, WV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 330      
Initial Cost of Building & Improvements 19,566      
Cost Capitalized Subsequent to Acquisition 356      
Carrying Amount of Land 330      
Carrying Amount of Building and Improvements 19,922      
Accumulated Depreciation 4,597      
Triple-net | Fort Collins, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,680      
Initial Cost of Building & Improvements 58,608      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,680      
Carrying Amount of Building and Improvements 58,608      
Accumulated Depreciation 6,508      
Triple-net | Fort Collins, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 890      
Initial Cost of Building & Improvements 4,532      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 890      
Carrying Amount of Building and Improvements 4,532      
Accumulated Depreciation 376      
Triple-net | Fort Worth, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 450      
Initial Cost of Building & Improvements 13,615      
Cost Capitalized Subsequent to Acquisition 5,086      
Carrying Amount of Land 450      
Carrying Amount of Building and Improvements 18,701      
Accumulated Depreciation 4,812      
Triple-net | Fountain Valley, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,259      
Initial Cost of Building & Improvements 9,379      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 5,259      
Carrying Amount of Building and Improvements 9,379      
Accumulated Depreciation 365      
Triple-net | Franconia, NH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 360      
Initial Cost of Building & Improvements 11,320      
Cost Capitalized Subsequent to Acquisition 70      
Carrying Amount of Land 360      
Carrying Amount of Building and Improvements 11,390      
Accumulated Depreciation 2,748      
Triple-net | Fredericksburg, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,000      
Initial Cost of Building & Improvements 20,000      
Cost Capitalized Subsequent to Acquisition 2,070      
Carrying Amount of Land 1,000      
Carrying Amount of Building and Improvements 22,070      
Accumulated Depreciation 7,918      
Triple-net | Fredericksburg, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,130      
Initial Cost of Building & Improvements 23,202      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,130      
Carrying Amount of Building and Improvements 23,202      
Accumulated Depreciation 3,363      
Triple-net | Ft. Myers, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,110      
Initial Cost of Building & Improvements 10,562      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,110      
Carrying Amount of Building and Improvements 10,562      
Accumulated Depreciation 422      
Triple-net | Ft. Myers, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,139      
Initial Cost of Building & Improvements 18,240      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,139      
Carrying Amount of Building and Improvements 18,240      
Accumulated Depreciation 713      
Triple-net | Ft. Myers, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,502      
Initial Cost of Building & Improvements 9,744      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,502      
Carrying Amount of Building and Improvements 9,744      
Accumulated Depreciation 461      
Triple-net | Gainesville, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,374      
Initial Cost of Building & Improvements 29,088      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,374      
Carrying Amount of Building and Improvements 29,088      
Accumulated Depreciation 75      
Triple-net | Galesburg, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,708      
Initial Cost of Building & Improvements 3,841      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,708      
Carrying Amount of Building and Improvements 3,841      
Accumulated Depreciation 152      
Triple-net | Gardner, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 200      
Initial Cost of Building & Improvements 2,800      
Cost Capitalized Subsequent to Acquisition 93      
Carrying Amount of Land 200      
Carrying Amount of Building and Improvements 2,893      
Accumulated Depreciation 346      
Triple-net | Gastonia, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 470      
Initial Cost of Building & Improvements 6,129      
Cost Capitalized Subsequent to Acquisition 17      
Carrying Amount of Land 470      
Carrying Amount of Building and Improvements 6,146      
Accumulated Depreciation 2,680      
Triple-net | Gastonia, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 310      
Initial Cost of Building & Improvements 3,096      
Cost Capitalized Subsequent to Acquisition 36      
Carrying Amount of Land 310      
Carrying Amount of Building and Improvements 3,132      
Accumulated Depreciation 1,426      
Triple-net | Gastonia, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 400      
Initial Cost of Building & Improvements 5,029      
Cost Capitalized Subsequent to Acquisition 202      
Carrying Amount of Land 400      
Carrying Amount of Building and Improvements 5,231      
Accumulated Depreciation 2,264      
Triple-net | Geneva, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,502      
Initial Cost of Building & Improvements 16,198      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,502      
Carrying Amount of Building and Improvements 16,198      
Accumulated Depreciation 631      
Triple-net | Georgetown, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 200      
Initial Cost of Building & Improvements 2,100      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 200      
Carrying Amount of Building and Improvements 2,100      
Accumulated Depreciation 1,227      
Triple-net | Gig Harbor, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,000      
Initial Cost of Building & Improvements 4,463      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,000      
Carrying Amount of Building and Improvements 4,463      
Accumulated Depreciation 213      
Triple-net | Glen Ellyn, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,496      
Initial Cost of Building & Improvements 6,636      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,496      
Carrying Amount of Building and Improvements 6,636      
Accumulated Depreciation 288      
Triple-net | Granbury, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,550      
Initial Cost of Building & Improvements 2,940      
Cost Capitalized Subsequent to Acquisition 777      
Carrying Amount of Land 2,550      
Carrying Amount of Building and Improvements 3,717      
Accumulated Depreciation 876      
Triple-net | Granger, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,670      
Initial Cost of Building & Improvements 21,280      
Cost Capitalized Subsequent to Acquisition 2,401      
Carrying Amount of Land 1,670      
Carrying Amount of Building and Improvements 23,681      
Accumulated Depreciation 5,629      
Triple-net | Grapevine, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,220      
Initial Cost of Building & Improvements 17,648      
Cost Capitalized Subsequent to Acquisition 69      
Carrying Amount of Land 2,220      
Carrying Amount of Building and Improvements 17,717      
Accumulated Depreciation 2,003      
Triple-net | Greeley, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,077      
Initial Cost of Building & Improvements 18,051      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,077      
Carrying Amount of Building and Improvements 18,051      
Accumulated Depreciation 1,341      
Triple-net | Greensboro, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 330      
Initial Cost of Building & Improvements 2,970      
Cost Capitalized Subsequent to Acquisition 594      
Carrying Amount of Land 330      
Carrying Amount of Building and Improvements 3,564      
Accumulated Depreciation 1,587      
Triple-net | Greensboro, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 560      
Initial Cost of Building & Improvements 5,507      
Cost Capitalized Subsequent to Acquisition 1,332      
Carrying Amount of Land 560      
Carrying Amount of Building and Improvements 6,839      
Accumulated Depreciation 2,921      
Triple-net | Greenville, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 310      
Initial Cost of Building & Improvements 4,750      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 310      
Carrying Amount of Building and Improvements 4,750      
Accumulated Depreciation 2,034      
Triple-net | Greenville, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,751      
Initial Cost of Building & Improvements 8,774      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,751      
Carrying Amount of Building and Improvements 8,774      
Accumulated Depreciation 351      
Triple-net | Greenville, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 947      
Initial Cost of Building & Improvements 1,445      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 947      
Carrying Amount of Building and Improvements 1,445      
Accumulated Depreciation 97      
Triple-net | Greenville, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 290      
Initial Cost of Building & Improvements 4,393      
Cost Capitalized Subsequent to Acquisition 236      
Carrying Amount of Land 290      
Carrying Amount of Building and Improvements 4,629      
Accumulated Depreciation 1,989      
Triple-net | Greenwood, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,550      
Initial Cost of Building & Improvements 22,770      
Cost Capitalized Subsequent to Acquisition 81      
Carrying Amount of Land 1,550      
Carrying Amount of Building and Improvements 22,851      
Accumulated Depreciation 5,530      
Triple-net | Grosse Pointe, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 867      
Initial Cost of Building & Improvements 2,386      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 867      
Carrying Amount of Building and Improvements 2,386      
Accumulated Depreciation 100      
Triple-net | Groton, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,430      
Initial Cost of Building & Improvements 19,941      
Cost Capitalized Subsequent to Acquisition 968      
Carrying Amount of Land 2,430      
Carrying Amount of Building and Improvements 20,909      
Accumulated Depreciation 5,411      
Triple-net | Hamilton, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 440      
Initial Cost of Building & Improvements 4,469      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 440      
Carrying Amount of Building and Improvements 4,469      
Accumulated Depreciation 2,098      
Triple-net | Hanahan, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,934      
Initial Cost of Building & Improvements 3,988      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,934      
Carrying Amount of Building and Improvements 3,988      
Accumulated Depreciation 190      
Triple-net | Hanford, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,382      
Initial Cost of Building & Improvements 9,829      
Cost Capitalized Subsequent to Acquisition 846      
Carrying Amount of Land 1,486      
Carrying Amount of Building and Improvements 10,571      
Accumulated Depreciation 1,791      
Triple-net | Harrisburg, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 569      
Initial Cost of Building & Improvements 12,826      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 569      
Carrying Amount of Building and Improvements 12,826      
Accumulated Depreciation 497      
Triple-net | Harrow, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 7,402      
Initial Cost of Building & Improvements 8,266      
Cost Capitalized Subsequent to Acquisition 1,183      
Carrying Amount of Land 7,961      
Carrying Amount of Building and Improvements 8,890      
Accumulated Depreciation 1,248      
Triple-net | Hatboro, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 28,112      
Cost Capitalized Subsequent to Acquisition 1,771      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 29,883      
Accumulated Depreciation 6,894      
Triple-net | Hatboro, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,192      
Initial Cost of Building & Improvements 7,611      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,192      
Carrying Amount of Building and Improvements 7,611      
Accumulated Depreciation 402      
Triple-net | Hatfield, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,924      
Initial Cost of Building & Improvements 7,527      
Cost Capitalized Subsequent to Acquisition 789      
Carrying Amount of Land 3,145      
Carrying Amount of Building and Improvements 8,095      
Accumulated Depreciation 1,382      
Triple-net | Hattiesburg, MS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 450      
Initial Cost of Building & Improvements 13,469      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 450      
Carrying Amount of Building and Improvements 13,469      
Accumulated Depreciation 3,099      
Triple-net | Hemet, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 6,224      
Initial Cost of Building & Improvements 8,414      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 6,224      
Carrying Amount of Building and Improvements 8,414      
Accumulated Depreciation 339      
Triple-net | Henry, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,860      
Initial Cost of Building & Improvements 3,689      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,860      
Carrying Amount of Building and Improvements 3,689      
Accumulated Depreciation 141      
Triple-net | Hermitage, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,500      
Initial Cost of Building & Improvements 9,943      
Cost Capitalized Subsequent to Acquisition 540      
Carrying Amount of Land 1,500      
Carrying Amount of Building and Improvements 10,483      
Accumulated Depreciation 2,212      
Triple-net | Herne Bay, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,900      
Initial Cost of Building & Improvements 24,353      
Cost Capitalized Subsequent to Acquisition 2,726      
Carrying Amount of Land 2,043      
Carrying Amount of Building and Improvements 26,936      
Accumulated Depreciation 4,843      
Triple-net | Hiawatha, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 40      
Initial Cost of Building & Improvements 4,210      
Cost Capitalized Subsequent to Acquisition 29      
Carrying Amount of Land 40      
Carrying Amount of Building and Improvements 4,239      
Accumulated Depreciation 495      
Triple-net | Hickory, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 290      
Initial Cost of Building & Improvements 987      
Cost Capitalized Subsequent to Acquisition 312      
Carrying Amount of Land 290      
Carrying Amount of Building and Improvements 1,299      
Accumulated Depreciation 673      
Triple-net | High Point, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 560      
Initial Cost of Building & Improvements 4,443      
Cost Capitalized Subsequent to Acquisition 848      
Carrying Amount of Land 560      
Carrying Amount of Building and Improvements 5,291      
Accumulated Depreciation 2,327      
Triple-net | High Point, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 370      
Initial Cost of Building & Improvements 2,185      
Cost Capitalized Subsequent to Acquisition 451      
Carrying Amount of Land 370      
Carrying Amount of Building and Improvements 2,636      
Accumulated Depreciation 1,207      
Triple-net | High Point, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 330      
Initial Cost of Building & Improvements 3,395      
Cost Capitalized Subsequent to Acquisition 108      
Carrying Amount of Land 330      
Carrying Amount of Building and Improvements 3,503      
Accumulated Depreciation 1,530      
Triple-net | High Point, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 430      
Initial Cost of Building & Improvements 4,143      
Cost Capitalized Subsequent to Acquisition 36      
Carrying Amount of Land 430      
Carrying Amount of Building and Improvements 4,179      
Accumulated Depreciation 1,840      
Triple-net | Highlands Ranch, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 940      
Initial Cost of Building & Improvements 3,721      
Cost Capitalized Subsequent to Acquisition 4,983      
Carrying Amount of Land 940      
Carrying Amount of Building and Improvements 8,704      
Accumulated Depreciation 2,516      
Triple-net | Hillsboro, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,792      
Initial Cost of Building & Improvements 6,341      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,792      
Carrying Amount of Building and Improvements 6,341      
Accumulated Depreciation 347      
Triple-net | Hinckley, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,159      
Initial Cost of Building & Improvements 4,194      
Cost Capitalized Subsequent to Acquisition 480      
Carrying Amount of Land 2,322      
Carrying Amount of Building and Improvements 4,511      
Accumulated Depreciation 843      
Triple-net | Hindhead, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 39,141      
Initial Cost of Land 17,852      
Initial Cost of Building & Improvements 48,645      
Cost Capitalized Subsequent to Acquisition 5,405      
Carrying Amount of Land 19,200      
Carrying Amount of Building and Improvements 52,702      
Accumulated Depreciation 4,171      
Triple-net | Hinsdale, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,033      
Initial Cost of Building & Improvements 24,287      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,033      
Carrying Amount of Building and Improvements 24,287      
Accumulated Depreciation 894      
Triple-net | Hockessin, DE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,120      
Initial Cost of Building & Improvements 6,308      
Cost Capitalized Subsequent to Acquisition 1,247      
Carrying Amount of Land 1,120      
Carrying Amount of Building and Improvements 7,555      
Accumulated Depreciation 1,163      
Triple-net | Holton, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 40      
Initial Cost of Building & Improvements 7,460      
Cost Capitalized Subsequent to Acquisition 13      
Carrying Amount of Land 40      
Carrying Amount of Building and Improvements 7,473      
Accumulated Depreciation 814      
Triple-net | Homewood, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,395      
Initial Cost of Building & Improvements 7,652      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,395      
Carrying Amount of Building and Improvements 7,652      
Accumulated Depreciation 288      
Triple-net | Howard, WI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 579      
Initial Cost of Building & Improvements 32,122      
Cost Capitalized Subsequent to Acquisition 10      
Carrying Amount of Land 579      
Carrying Amount of Building and Improvements 32,132      
Accumulated Depreciation 2,040      
Triple-net | Huntingdon Valley, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,150      
Initial Cost of Building & Improvements 3,730      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,150      
Carrying Amount of Building and Improvements 3,730      
Accumulated Depreciation 209      
Triple-net | Hutchinson, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 600      
Initial Cost of Building & Improvements 10,590      
Cost Capitalized Subsequent to Acquisition 194      
Carrying Amount of Land 600      
Carrying Amount of Building and Improvements 10,784      
Accumulated Depreciation 4,242      
Triple-net | Independence, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,082      
Initial Cost of Building & Improvements 6,767      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,082      
Carrying Amount of Building and Improvements 6,767      
Accumulated Depreciation 829      
Triple-net | Indianapolis, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 870      
Initial Cost of Building & Improvements 14,688      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 870      
Carrying Amount of Building and Improvements 14,688      
Accumulated Depreciation 2,283      
Triple-net | Indianapolis, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,105      
Initial Cost of Building & Improvements 6,645      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,105      
Carrying Amount of Building and Improvements 6,645      
Accumulated Depreciation 252      
Triple-net | Jackson, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 6,500      
Initial Cost of Building & Improvements 26,405      
Cost Capitalized Subsequent to Acquisition 3,107      
Carrying Amount of Land 6,500      
Carrying Amount of Building and Improvements 29,512      
Accumulated Depreciation 5,334      
Triple-net | Jacksonville, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 750      
Initial Cost of Building & Improvements 25,231      
Cost Capitalized Subsequent to Acquisition 111      
Carrying Amount of Land 750      
Carrying Amount of Building and Improvements 25,342      
Accumulated Depreciation 2,303      
Triple-net | Jacksonville, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 26,381      
Cost Capitalized Subsequent to Acquisition 1,801      
Carrying Amount of Land 1,691      
Carrying Amount of Building and Improvements 26,491      
Accumulated Depreciation 2,403      
Triple-net | Jacksonville, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,752      
Initial Cost of Building & Improvements 2,553      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,752      
Carrying Amount of Building and Improvements 2,553      
Accumulated Depreciation 102      
Triple-net | Jacksonville, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,182      
Initial Cost of Building & Improvements 9,491      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,182      
Carrying Amount of Building and Improvements 9,491      
Accumulated Depreciation 406      
Triple-net | Jefferson Hills, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,265      
Initial Cost of Building & Improvements 13,618      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,265      
Carrying Amount of Building and Improvements 13,618      
Accumulated Depreciation 771      
Triple-net | Jersey Shore, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 600      
Initial Cost of Building & Improvements 8,107      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 600      
Carrying Amount of Building and Improvements 8,107      
Accumulated Depreciation 294      
Triple-net | Kansas City, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 700      
Initial Cost of Building & Improvements 20,115      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 700      
Carrying Amount of Building and Improvements 20,115      
Accumulated Depreciation 2,322      
Triple-net | Katy, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,778      
Initial Cost of Building & Improvements 22,622      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,778      
Carrying Amount of Building and Improvements 22,622      
Accumulated Depreciation 1,707      
Triple-net | Kensington, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,753      
Initial Cost of Building & Improvements 18,626      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,753      
Carrying Amount of Building and Improvements 18,626      
Accumulated Depreciation 699      
Triple-net | Kenwood, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 821      
Initial Cost of Building & Improvements 11,043      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 821      
Carrying Amount of Building and Improvements 11,043      
Accumulated Depreciation 428      
Triple-net | Kettering, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,229      
Initial Cost of Building & Improvements 4,703      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,229      
Carrying Amount of Building and Improvements 4,703      
Accumulated Depreciation 207      
Triple-net | King of Prussia, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 720      
Initial Cost of Building & Improvements 14,780      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 720      
Carrying Amount of Building and Improvements 14,780      
Accumulated Depreciation 594      
Triple-net | King of Prussia, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,205      
Initial Cost of Building & Improvements 4,727      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,205      
Carrying Amount of Building and Improvements 4,727      
Accumulated Depreciation 225      
Triple-net | Kingsford, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,362      
Initial Cost of Building & Improvements 10,598      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,362      
Carrying Amount of Building and Improvements 10,598      
Accumulated Depreciation 428      
Triple-net | Kingston, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 986      
Initial Cost of Building & Improvements 5,711      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 986      
Carrying Amount of Building and Improvements 5,711      
Accumulated Depreciation 225      
Triple-net | Kingston upon Thames, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 71,089      
Initial Cost of Land 33,063      
Initial Cost of Building & Improvements 46,696      
Cost Capitalized Subsequent to Acquisition 6,439      
Carrying Amount of Land 35,561      
Carrying Amount of Building and Improvements 50,637      
Accumulated Depreciation 4,056      
Triple-net | Kirkstall, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,437      
Initial Cost of Building & Improvements 9,414      
Cost Capitalized Subsequent to Acquisition 896      
Carrying Amount of Land 2,621      
Carrying Amount of Building and Improvements 10,126      
Accumulated Depreciation 1,720      
Triple-net | Kokomo, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 710      
Initial Cost of Building & Improvements 16,044      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 710      
Carrying Amount of Building and Improvements 16,044      
Accumulated Depreciation 2,488      
Triple-net | Lacey, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,582      
Initial Cost of Building & Improvements 18,180      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,582      
Carrying Amount of Building and Improvements 18,180      
Accumulated Depreciation 692      
Triple-net | Lafayette, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,420      
Initial Cost of Building & Improvements 20,192      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,420      
Carrying Amount of Building and Improvements 20,192      
Accumulated Depreciation 2,572      
Triple-net | Lafayette, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 670      
Initial Cost of Building & Improvements 16,833      
Cost Capitalized Subsequent to Acquisition 1      
Carrying Amount of Land 670      
Carrying Amount of Building and Improvements 16,834      
Accumulated Depreciation 2,368      
Triple-net | Lakeway, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,142      
Initial Cost of Building & Improvements 23,203      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 5,142      
Carrying Amount of Building and Improvements 23,203      
Accumulated Depreciation 3,995      
Triple-net | Lakewood, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,160      
Initial Cost of Building & Improvements 28,091      
Cost Capitalized Subsequent to Acquisition 62      
Carrying Amount of Land 2,160      
Carrying Amount of Building and Improvements 28,153      
Accumulated Depreciation 4,299      
Triple-net | Lakewood Ranch, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 650      
Initial Cost of Building & Improvements 6,714      
Cost Capitalized Subsequent to Acquisition 1,988      
Carrying Amount of Land 650      
Carrying Amount of Building and Improvements 8,702      
Accumulated Depreciation 1,726      
Triple-net | Lakewood Ranch, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,000      
Initial Cost of Building & Improvements 22,388      
Cost Capitalized Subsequent to Acquisition 86      
Carrying Amount of Land 1,000      
Carrying Amount of Building and Improvements 22,474      
Accumulated Depreciation 4,410      
Triple-net | Lancaster, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,680      
Initial Cost of Building & Improvements 14,039      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,680      
Carrying Amount of Building and Improvements 14,039      
Accumulated Depreciation 1,159      
Triple-net | Lancaster, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,011      
Initial Cost of Building & Improvements 7,504      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,011      
Carrying Amount of Building and Improvements 7,504      
Accumulated Depreciation 296      
Triple-net | Largo, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,166      
Initial Cost of Building & Improvements 3,427      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,166      
Carrying Amount of Building and Improvements 3,427      
Accumulated Depreciation 175      
Triple-net | Las Vegas, NV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 580      
Initial Cost of Building & Improvements 23,420      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 580      
Carrying Amount of Building and Improvements 23,420      
Accumulated Depreciation 5,220      
Triple-net | Laureldale, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,171      
Initial Cost of Building & Improvements 14,424      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,171      
Carrying Amount of Building and Improvements 14,424      
Accumulated Depreciation 549      
Triple-net | Lawrence, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 250      
Initial Cost of Building & Improvements 8,716      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 250      
Carrying Amount of Building and Improvements 8,716      
Accumulated Depreciation 1,697      
Triple-net | Lebanon, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 728      
Initial Cost of Building & Improvements 10,370      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 728      
Carrying Amount of Building and Improvements 10,370      
Accumulated Depreciation 432      
Triple-net | Lebanon, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,214      
Initial Cost of Building & Improvements 5,962      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,214      
Carrying Amount of Building and Improvements 5,962      
Accumulated Depreciation 278      
Triple-net | Lee, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 290      
Initial Cost of Building & Improvements 18,135      
Cost Capitalized Subsequent to Acquisition 926      
Carrying Amount of Land 290      
Carrying Amount of Building and Improvements 19,061      
Accumulated Depreciation 8,860      
Triple-net | Lee, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,974      
Initial Cost of Building & Improvements 13,239      
Cost Capitalized Subsequent to Acquisition 1,149      
Carrying Amount of Land 2,123      
Carrying Amount of Building and Improvements 14,239      
Accumulated Depreciation 1,728      
Triple-net | Leicester, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,060      
Initial Cost of Building & Improvements 24,410      
Cost Capitalized Subsequent to Acquisition 2,075      
Carrying Amount of Land 3,291      
Carrying Amount of Building and Improvements 26,254      
Accumulated Depreciation 4,798      
Triple-net | Lenoir, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 190      
Initial Cost of Building & Improvements 3,748      
Cost Capitalized Subsequent to Acquisition 718      
Carrying Amount of Land 190      
Carrying Amount of Building and Improvements 4,466      
Accumulated Depreciation 1,945      
Triple-net | Lethbridge, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 1,305      
Initial Cost of Land 1,214      
Initial Cost of Building & Improvements 2,750      
Cost Capitalized Subsequent to Acquisition 279      
Carrying Amount of Land 1,296      
Carrying Amount of Building and Improvements 2,947      
Accumulated Depreciation 554      
Triple-net | Lexana, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 480      
Initial Cost of Building & Improvements 1,770      
Cost Capitalized Subsequent to Acquisition 152      
Carrying Amount of Land 480      
Carrying Amount of Building and Improvements 1,922      
Accumulated Depreciation 247      
Triple-net | Lexington, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 200      
Initial Cost of Building & Improvements 3,900      
Cost Capitalized Subsequent to Acquisition 1,090      
Carrying Amount of Land 200      
Carrying Amount of Building and Improvements 4,990      
Accumulated Depreciation 2,243      
Triple-net | Libertyville, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 6,500      
Initial Cost of Building & Improvements 40,024      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 6,500      
Carrying Amount of Building and Improvements 40,024      
Accumulated Depreciation 9,587      
Triple-net | Libertyville, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,993      
Initial Cost of Building & Improvements 11,550      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,993      
Carrying Amount of Building and Improvements 11,550      
Accumulated Depreciation 431      
Triple-net | Lichfield, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,382      
Initial Cost of Building & Improvements 30,324      
Cost Capitalized Subsequent to Acquisition 2,395      
Carrying Amount of Land 1,486      
Carrying Amount of Building and Improvements 32,615      
Accumulated Depreciation 3,979      
Triple-net | Lillington, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 470      
Initial Cost of Building & Improvements 17,579      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 470      
Carrying Amount of Building and Improvements 17,579      
Accumulated Depreciation 2,626      
Triple-net | Lillington, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 500      
Initial Cost of Building & Improvements 16,451      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 500      
Carrying Amount of Building and Improvements 16,451      
Accumulated Depreciation 2,307      
Triple-net | Lincoln, NE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 390      
Initial Cost of Building & Improvements 13,807      
Cost Capitalized Subsequent to Acquisition 95      
Carrying Amount of Land 390      
Carrying Amount of Building and Improvements 13,902      
Accumulated Depreciation 3,519      
Triple-net | Lititz, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,200      
Initial Cost of Building & Improvements 13,836      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,200      
Carrying Amount of Building and Improvements 13,836      
Accumulated Depreciation 1,144      
Triple-net | Livermore, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,100      
Initial Cost of Building & Improvements 24,996      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,100      
Carrying Amount of Building and Improvements 24,996      
Accumulated Depreciation 3,276      
Triple-net | Livonia, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 985      
Initial Cost of Building & Improvements 13,558      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 985      
Carrying Amount of Building and Improvements 13,558      
Accumulated Depreciation 544      
Triple-net | Livonia, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,836      
Initial Cost of Building & Improvements 2,278      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,836      
Carrying Amount of Building and Improvements 2,278      
Accumulated Depreciation 109      
Triple-net | Longview, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 610      
Initial Cost of Building & Improvements 5,520      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 610      
Carrying Amount of Building and Improvements 5,520      
Accumulated Depreciation 1,873      
Triple-net | Longwood, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,260      
Initial Cost of Building & Improvements 6,445      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,260      
Carrying Amount of Building and Improvements 6,445      
Accumulated Depreciation 1,552      
Triple-net | Los Angeles, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 11,430      
Cost Capitalized Subsequent to Acquisition 1,050      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 12,480      
Accumulated Depreciation 3,242      
Triple-net | Louisburg, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 280      
Initial Cost of Building & Improvements 4,320      
Cost Capitalized Subsequent to Acquisition 44      
Carrying Amount of Land 280      
Carrying Amount of Building and Improvements 4,364      
Accumulated Depreciation 481      
Triple-net | Louisville, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 490      
Initial Cost of Building & Improvements 10,010      
Cost Capitalized Subsequent to Acquisition 2,768      
Carrying Amount of Land 490      
Carrying Amount of Building and Improvements 12,778      
Accumulated Depreciation 5,144      
Triple-net | Loxley, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,369      
Initial Cost of Building & Improvements 15,668      
Cost Capitalized Subsequent to Acquisition 1,288      
Carrying Amount of Land 1,473      
Carrying Amount of Building and Improvements 16,852      
Accumulated Depreciation 3,003      
Triple-net | Lutherville, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,100      
Initial Cost of Building & Improvements 19,786      
Cost Capitalized Subsequent to Acquisition 1,744      
Carrying Amount of Land 1,100      
Carrying Amount of Building and Improvements 21,530      
Accumulated Depreciation 5,068      
Triple-net | Lynchburg, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 340      
Initial Cost of Building & Improvements 16,114      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 340      
Carrying Amount of Building and Improvements 16,114      
Accumulated Depreciation 2,444      
Triple-net | Lynchburg, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,904      
Initial Cost of Building & Improvements 3,697      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,904      
Carrying Amount of Building and Improvements 3,697      
Accumulated Depreciation 144      
Triple-net | Lynnwood, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,302      
Initial Cost of Building & Improvements 5,634      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,302      
Carrying Amount of Building and Improvements 5,634      
Accumulated Depreciation 222      
Triple-net | Macomb, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,586      
Initial Cost of Building & Improvements 4,059      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,586      
Carrying Amount of Building and Improvements 4,059      
Accumulated Depreciation 153      
Triple-net | Macungie, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 960      
Initial Cost of Building & Improvements 29,033      
Cost Capitalized Subsequent to Acquisition 84      
Carrying Amount of Land 960      
Carrying Amount of Building and Improvements 29,117      
Accumulated Depreciation 6,833      
Triple-net | Manalapan, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 900      
Initial Cost of Building & Improvements 22,624      
Cost Capitalized Subsequent to Acquisition 760      
Carrying Amount of Land 900      
Carrying Amount of Building and Improvements 23,384      
Accumulated Depreciation 5,094      
Triple-net | Manassas, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 750      
Initial Cost of Building & Improvements 7,446      
Cost Capitalized Subsequent to Acquisition 1,069      
Carrying Amount of Land 750      
Carrying Amount of Building and Improvements 8,515      
Accumulated Depreciation 3,285      
Triple-net | Mankato, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,460      
Initial Cost of Building & Improvements 32,104      
Cost Capitalized Subsequent to Acquisition 300      
Carrying Amount of Land 1,460      
Carrying Amount of Building and Improvements 32,404      
Accumulated Depreciation 3,451      
Triple-net | Mansfield, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 660      
Initial Cost of Building & Improvements 5,251      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 660      
Carrying Amount of Building and Improvements 5,251      
Accumulated Depreciation 1,802      
Triple-net | Marietta, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,149      
Initial Cost of Building & Improvements 9,376      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,149      
Carrying Amount of Building and Improvements 9,376      
Accumulated Depreciation 362      
Triple-net | Marietta, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,406      
Initial Cost of Building & Improvements 12,233      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,406      
Carrying Amount of Building and Improvements 12,233      
Accumulated Depreciation 462      
Triple-net | Marietta, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,050      
Initial Cost of Building & Improvements 13,633      
Cost Capitalized Subsequent to Acquisition 463      
Carrying Amount of Land 1,050      
Carrying Amount of Building and Improvements 14,096      
Accumulated Depreciation 1,585      
Triple-net | Marion, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 720      
Initial Cost of Building & Improvements 12,750      
Cost Capitalized Subsequent to Acquisition 1,136      
Carrying Amount of Land 720      
Carrying Amount of Building and Improvements 13,886      
Accumulated Depreciation 2,086      
Triple-net | Marion, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 990      
Initial Cost of Building & Improvements 9,190      
Cost Capitalized Subsequent to Acquisition 824      
Carrying Amount of Land 990      
Carrying Amount of Building and Improvements 10,014      
Accumulated Depreciation 1,782      
Triple-net | Marion, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,768      
Initial Cost of Building & Improvements 17,420      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,768      
Carrying Amount of Building and Improvements 17,420      
Accumulated Depreciation 856      
Triple-net | Marlborough, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,677      
Initial Cost of Building & Improvements 6,822      
Cost Capitalized Subsequent to Acquisition 718      
Carrying Amount of Land 2,879      
Carrying Amount of Building and Improvements 7,338      
Accumulated Depreciation 1,006      
Triple-net | Marlow, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 9,068      
Initial Cost of Building & Improvements 39,720      
Cost Capitalized Subsequent to Acquisition 1,970      
Carrying Amount of Land 9,434      
Carrying Amount of Building and Improvements 41,324      
Accumulated Depreciation 4,037      
Triple-net | Martinsville, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 349      
Initial Cost of Building & Improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 349      
Carrying Amount of Building and Improvements 0      
Accumulated Depreciation 0      
Triple-net | Matawan, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,830      
Initial Cost of Building & Improvements 20,618      
Cost Capitalized Subsequent to Acquisition 166      
Carrying Amount of Land 1,830      
Carrying Amount of Building and Improvements 20,784      
Accumulated Depreciation 4,764      
Triple-net | Matthews, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 560      
Initial Cost of Building & Improvements 4,738      
Cost Capitalized Subsequent to Acquisition 39      
Carrying Amount of Land 560      
Carrying Amount of Building and Improvements 4,777      
Accumulated Depreciation 2,141      
Triple-net | McHenry, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,576      
Initial Cost of Building & Improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,576      
Carrying Amount of Building and Improvements 0      
Accumulated Depreciation 0      
Triple-net | McKinney, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,570      
Initial Cost of Building & Improvements 7,389      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,570      
Carrying Amount of Building and Improvements 7,389      
Accumulated Depreciation 2,096      
Triple-net | McMurray, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,440      
Initial Cost of Building & Improvements 15,805      
Cost Capitalized Subsequent to Acquisition 3,894      
Carrying Amount of Land 1,440      
Carrying Amount of Building and Improvements 19,699      
Accumulated Depreciation 4,190      
Triple-net | Medicine Hat, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 2,144      
Initial Cost of Land 932      
Initial Cost of Building & Improvements 5,566      
Cost Capitalized Subsequent to Acquisition 450      
Carrying Amount of Land 995      
Carrying Amount of Building and Improvements 5,953      
Accumulated Depreciation 889      
Triple-net | Mentor, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,827      
Initial Cost of Building & Improvements 9,941      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,827      
Carrying Amount of Building and Improvements 9,941      
Accumulated Depreciation 389      
Triple-net | Mercerville, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 860      
Initial Cost of Building & Improvements 9,929      
Cost Capitalized Subsequent to Acquisition 173      
Carrying Amount of Land 860      
Carrying Amount of Building and Improvements 10,102      
Accumulated Depreciation 2,619      
Triple-net | Meriden, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,300      
Initial Cost of Building & Improvements 1,472      
Cost Capitalized Subsequent to Acquisition 233      
Carrying Amount of Land 1,300      
Carrying Amount of Building and Improvements 1,705      
Accumulated Depreciation 848      
Triple-net | Miamisburg, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 786      
Initial Cost of Building & Improvements 3,233      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 786      
Carrying Amount of Building and Improvements 3,233      
Accumulated Depreciation 178      
Triple-net | Middleburg Heights, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 960      
Initial Cost of Building & Improvements 7,780      
Cost Capitalized Subsequent to Acquisition 427      
Carrying Amount of Land 960      
Carrying Amount of Building and Improvements 8,207      
Accumulated Depreciation 3,134      
Triple-net | Middleton, WI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 420      
Initial Cost of Building & Improvements 4,006      
Cost Capitalized Subsequent to Acquisition 600      
Carrying Amount of Land 420      
Carrying Amount of Building and Improvements 4,606      
Accumulated Depreciation 2,028      
Triple-net | Milton Keynes, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,826      
Initial Cost of Building & Improvements 18,654      
Cost Capitalized Subsequent to Acquisition 1,547      
Carrying Amount of Land 1,964      
Carrying Amount of Building and Improvements 20,063      
Accumulated Depreciation 2,520      
Triple-net | Minnetonka, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,080      
Initial Cost of Building & Improvements 24,360      
Cost Capitalized Subsequent to Acquisition 1,554      
Carrying Amount of Land 2,080      
Carrying Amount of Building and Improvements 25,914      
Accumulated Depreciation 6,078      
Triple-net | Mishawaka, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 740      
Initial Cost of Building & Improvements 16,113      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 740      
Carrying Amount of Building and Improvements 16,113      
Accumulated Depreciation 2,565      
Triple-net | Moline, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,946      
Initial Cost of Building & Improvements 18,677      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,946      
Carrying Amount of Building and Improvements 18,677      
Accumulated Depreciation 682      
Triple-net | Monmouth Junction, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 720      
Initial Cost of Building & Improvements 6,209      
Cost Capitalized Subsequent to Acquisition 86      
Carrying Amount of Land 720      
Carrying Amount of Building and Improvements 6,295      
Accumulated Depreciation 1,721      
Triple-net | Monroe, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 470      
Initial Cost of Building & Improvements 3,681      
Cost Capitalized Subsequent to Acquisition 788      
Carrying Amount of Land 470      
Carrying Amount of Building and Improvements 4,469      
Accumulated Depreciation 1,950      
Triple-net | Monroe, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 310      
Initial Cost of Building & Improvements 4,799      
Cost Capitalized Subsequent to Acquisition 883      
Carrying Amount of Land 310      
Carrying Amount of Building and Improvements 5,682      
Accumulated Depreciation 2,450      
Triple-net | Monroe, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 450      
Initial Cost of Building & Improvements 4,021      
Cost Capitalized Subsequent to Acquisition 154      
Carrying Amount of Land 450      
Carrying Amount of Building and Improvements 4,175      
Accumulated Depreciation 1,860      
Triple-net | Monroe Township, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,250      
Initial Cost of Building & Improvements 27,771      
Cost Capitalized Subsequent to Acquisition 765      
Carrying Amount of Land 3,250      
Carrying Amount of Building and Improvements 28,536      
Accumulated Depreciation 2,966      
Triple-net | Monroeville, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,216      
Initial Cost of Building & Improvements 12,753      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,216      
Carrying Amount of Building and Improvements 12,753      
Accumulated Depreciation 593      
Triple-net | Monroeville, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,237      
Initial Cost of Building & Improvements 3,642      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,237      
Carrying Amount of Building and Improvements 3,642      
Accumulated Depreciation 225      
Triple-net | Montgomeryville, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,176      
Initial Cost of Building & Improvements 9,827      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,176      
Carrying Amount of Building and Improvements 9,827      
Accumulated Depreciation 404      
Triple-net | Montville, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,500      
Initial Cost of Building & Improvements 31,002      
Cost Capitalized Subsequent to Acquisition 1,699      
Carrying Amount of Land 3,500      
Carrying Amount of Building and Improvements 32,701      
Accumulated Depreciation 7,173      
Triple-net | Moorestown, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,143      
Initial Cost of Building & Improvements 23,902      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,143      
Carrying Amount of Building and Improvements 23,902      
Accumulated Depreciation 3,947      
Triple-net | Morehead City, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 200      
Initial Cost of Building & Improvements 3,104      
Cost Capitalized Subsequent to Acquisition 1,701      
Carrying Amount of Land 200      
Carrying Amount of Building and Improvements 4,805      
Accumulated Depreciation 2,371      
Triple-net | Morrison, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,720      
Initial Cost of Building & Improvements 16,261      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,720      
Carrying Amount of Building and Improvements 16,261      
Accumulated Depreciation 1,359      
Triple-net | Moulton, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,695      
Initial Cost of Building & Improvements 12,510      
Cost Capitalized Subsequent to Acquisition 1,611      
Carrying Amount of Land 1,662      
Carrying Amount of Building and Improvements 14,154      
Accumulated Depreciation 960      
Triple-net | Mountainside, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,097      
Initial Cost of Building & Improvements 7,810      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,097      
Carrying Amount of Building and Improvements 7,810      
Accumulated Depreciation 309      
Triple-net | Nacogdoches, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 390      
Initial Cost of Building & Improvements 5,754      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 390      
Carrying Amount of Building and Improvements 5,754      
Accumulated Depreciation 1,948      
Triple-net | Naperville, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,470      
Initial Cost of Building & Improvements 29,547      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,470      
Carrying Amount of Building and Improvements 29,547      
Accumulated Depreciation 7,214      
Triple-net | Naples, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,222      
Initial Cost of Building & Improvements 10,642      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,222      
Carrying Amount of Building and Improvements 10,642      
Accumulated Depreciation 441      
Triple-net | Naples, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,672      
Initial Cost of Building & Improvements 23,126      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,672      
Carrying Amount of Building and Improvements 23,126      
Accumulated Depreciation 1,068      
Triple-net | Naples, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,854      
Initial Cost of Building & Improvements 12,402      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,854      
Carrying Amount of Building and Improvements 12,402      
Accumulated Depreciation 463      
Triple-net | Nashville, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,910      
Initial Cost of Building & Improvements 29,590      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,910      
Carrying Amount of Building and Improvements 29,590      
Accumulated Depreciation 9,113      
Triple-net | Naugatuck, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,200      
Initial Cost of Building & Improvements 15,826      
Cost Capitalized Subsequent to Acquisition 199      
Carrying Amount of Land 1,200      
Carrying Amount of Building and Improvements 16,025      
Accumulated Depreciation 3,931      
Triple-net | Needham, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,610      
Initial Cost of Building & Improvements 12,667      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,610      
Carrying Amount of Building and Improvements 12,667      
Accumulated Depreciation 5,644      
Triple-net | New Lenox, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,225      
Initial Cost of Building & Improvements 21,575      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,225      
Carrying Amount of Building and Improvements 21,575      
Accumulated Depreciation 429      
Triple-net | New Moston, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,480      
Initial Cost of Building & Improvements 4,378      
Cost Capitalized Subsequent to Acquisition 443      
Carrying Amount of Land 1,592      
Carrying Amount of Building and Improvements 4,709      
Accumulated Depreciation 833      
Triple-net | Newark, DE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 560      
Initial Cost of Building & Improvements 21,220      
Cost Capitalized Subsequent to Acquisition 2,422      
Carrying Amount of Land 560      
Carrying Amount of Building and Improvements 23,642      
Accumulated Depreciation 8,621      
Triple-net | Newcastle Under Lyme, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,110      
Initial Cost of Building & Improvements 5,655      
Cost Capitalized Subsequent to Acquisition 512      
Carrying Amount of Land 1,194      
Carrying Amount of Building and Improvements 6,083      
Accumulated Depreciation 1,028      
Triple-net | Newcastle-under-Lyme, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,125      
Initial Cost of Building & Improvements 5,537      
Cost Capitalized Subsequent to Acquisition 503      
Carrying Amount of Land 1,210      
Carrying Amount of Building and Improvements 5,955      
Accumulated Depreciation 817      
Triple-net | Newport News, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 839      
Initial Cost of Building & Improvements 6,077      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 839      
Carrying Amount of Building and Improvements 6,077      
Accumulated Depreciation 739      
Triple-net | Norman, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 55      
Initial Cost of Building & Improvements 1,484      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 55      
Carrying Amount of Building and Improvements 1,484      
Accumulated Depreciation 969      
Triple-net | Norman, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,480      
Initial Cost of Building & Improvements 33,330      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,480      
Carrying Amount of Building and Improvements 33,330      
Accumulated Depreciation 6,428      
Triple-net | North Augusta, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 332      
Initial Cost of Building & Improvements 2,558      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 332      
Carrying Amount of Building and Improvements 2,558      
Accumulated Depreciation 1,407      
Triple-net | Northampton, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,182      
Initial Cost of Building & Improvements 17,348      
Cost Capitalized Subsequent to Acquisition 1,702      
Carrying Amount of Land 5,573      
Carrying Amount of Building and Improvements 18,659      
Accumulated Depreciation 3,277      
Triple-net | Northampton, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,013      
Initial Cost of Building & Improvements 6,257      
Cost Capitalized Subsequent to Acquisition 626      
Carrying Amount of Land 2,166      
Carrying Amount of Building and Improvements 6,730      
Accumulated Depreciation 869      
Triple-net | Northbrook, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,298      
Initial Cost of Building & Improvements 13,341      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,298      
Carrying Amount of Building and Improvements 13,341      
Accumulated Depreciation 510      
Triple-net | Nuneaton, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,325      
Initial Cost of Building & Improvements 8,983      
Cost Capitalized Subsequent to Acquisition 929      
Carrying Amount of Land 3,576      
Carrying Amount of Building and Improvements 9,661      
Accumulated Depreciation 1,634      
Triple-net | Nuthall, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,628      
Initial Cost of Building & Improvements 6,263      
Cost Capitalized Subsequent to Acquisition 597      
Carrying Amount of Land 1,752      
Carrying Amount of Building and Improvements 6,736      
Accumulated Depreciation 856      
Triple-net | Nuthall, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,498      
Initial Cost of Building & Improvements 10,436      
Cost Capitalized Subsequent to Acquisition 977      
Carrying Amount of Land 2,687      
Carrying Amount of Building and Improvements 11,224      
Accumulated Depreciation 1,917      
Triple-net | Oak Lawn, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,418      
Initial Cost of Building & Improvements 5,428      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,418      
Carrying Amount of Building and Improvements 5,428      
Accumulated Depreciation 206      
Triple-net | Oak Lawn, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,876      
Initial Cost of Building & Improvements 7,988      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,876      
Carrying Amount of Building and Improvements 7,988      
Accumulated Depreciation 315      
Triple-net | Oakland, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,760      
Initial Cost of Building & Improvements 16,143      
Cost Capitalized Subsequent to Acquisition 109      
Carrying Amount of Land 4,760      
Carrying Amount of Building and Improvements 16,252      
Accumulated Depreciation 2,372      
Triple-net | Ocala, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,340      
Initial Cost of Building & Improvements 10,564      
Cost Capitalized Subsequent to Acquisition 102      
Carrying Amount of Land 1,340      
Carrying Amount of Building and Improvements 10,666      
Accumulated Depreciation 3,067      
Triple-net | Oklahoma City, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 590      
Initial Cost of Building & Improvements 7,513      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 590      
Carrying Amount of Building and Improvements 7,513      
Accumulated Depreciation 2,382      
Triple-net | Oklahoma City, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 760      
Initial Cost of Building & Improvements 7,017      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 760      
Carrying Amount of Building and Improvements 7,017      
Accumulated Depreciation 2,197      
Triple-net | Oklahoma City, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,590      
Initial Cost of Building & Improvements 16,272      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,590      
Carrying Amount of Building and Improvements 16,272      
Accumulated Depreciation 44      
Triple-net | Olathe, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,930      
Initial Cost of Building & Improvements 19,765      
Cost Capitalized Subsequent to Acquisition 553      
Carrying Amount of Land 1,930      
Carrying Amount of Building and Improvements 20,318      
Accumulated Depreciation 2,378      
Triple-net | Omaha, NE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 370      
Initial Cost of Building & Improvements 10,230      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 370      
Carrying Amount of Building and Improvements 10,230      
Accumulated Depreciation 2,643      
Triple-net | Omaha, NE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 380      
Initial Cost of Building & Improvements 8,769      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 380      
Carrying Amount of Building and Improvements 8,769      
Accumulated Depreciation 2,392      
Triple-net | Ona, WV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 950      
Initial Cost of Building & Improvements 15,998      
Cost Capitalized Subsequent to Acquisition 390      
Carrying Amount of Land 950      
Carrying Amount of Building and Improvements 16,388      
Accumulated Depreciation 1,820      
Triple-net | Oneonta, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 80      
Initial Cost of Building & Improvements 5,020      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 80      
Carrying Amount of Building and Improvements 5,020      
Accumulated Depreciation 1,570      
Triple-net | Orange Park, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,201      
Initial Cost of Building & Improvements 4,018      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,201      
Carrying Amount of Building and Improvements 4,018      
Accumulated Depreciation 212      
Triple-net | Orem, UT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,150      
Initial Cost of Building & Improvements 24,107      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,150      
Carrying Amount of Building and Improvements 24,107      
Accumulated Depreciation 2,642      
Triple-net | Osage City, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 50      
Initial Cost of Building & Improvements 1,700      
Cost Capitalized Subsequent to Acquisition 142      
Carrying Amount of Land 50      
Carrying Amount of Building and Improvements 1,842      
Accumulated Depreciation 247      
Triple-net | Osawatomie, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 130      
Initial Cost of Building & Improvements 2,970      
Cost Capitalized Subsequent to Acquisition 136      
Carrying Amount of Land 130      
Carrying Amount of Building and Improvements 3,106      
Accumulated Depreciation 380      
Triple-net | Ottawa, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 160      
Initial Cost of Building & Improvements 6,590      
Cost Capitalized Subsequent to Acquisition 44      
Carrying Amount of Land 160      
Carrying Amount of Building and Improvements 6,634      
Accumulated Depreciation 742      
Triple-net | Overland Park, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,500      
Initial Cost of Building & Improvements 29,105      
Cost Capitalized Subsequent to Acquisition 38,441      
Carrying Amount of Land 8,230      
Carrying Amount of Building and Improvements 63,816      
Accumulated Depreciation 17,220      
Triple-net | Overland Park, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 410      
Initial Cost of Building & Improvements 2,840      
Cost Capitalized Subsequent to Acquisition 92      
Carrying Amount of Land 410      
Carrying Amount of Building and Improvements 2,932      
Accumulated Depreciation 374      
Triple-net | Overland Park, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,300      
Initial Cost of Building & Improvements 25,311      
Cost Capitalized Subsequent to Acquisition 677      
Carrying Amount of Land 1,300      
Carrying Amount of Building and Improvements 25,988      
Accumulated Depreciation 2,995      
Triple-net | Owasso, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 215      
Initial Cost of Building & Improvements 1,380      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 215      
Carrying Amount of Building and Improvements 1,380      
Accumulated Depreciation 834      
Triple-net | Owensboro, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 225      
Initial Cost of Building & Improvements 13,275      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 225      
Carrying Amount of Building and Improvements 13,275      
Accumulated Depreciation 5,428      
Triple-net | Owenton, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 100      
Initial Cost of Building & Improvements 2,400      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 100      
Carrying Amount of Building and Improvements 2,400      
Accumulated Depreciation 1,157      
Triple-net | Palestine, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 180      
Initial Cost of Building & Improvements 4,320      
Cost Capitalized Subsequent to Acquisition 1,300      
Carrying Amount of Land 180      
Carrying Amount of Building and Improvements 5,620      
Accumulated Depreciation 1,949      
Triple-net | Palm Beach Gardens, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,082      
Initial Cost of Building & Improvements 6,624      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,082      
Carrying Amount of Building and Improvements 6,624      
Accumulated Depreciation 289      
Triple-net | Palm Coast, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 870      
Initial Cost of Building & Improvements 10,957      
Cost Capitalized Subsequent to Acquisition 98      
Carrying Amount of Land 870      
Carrying Amount of Building and Improvements 11,055      
Accumulated Depreciation 3,040      
Triple-net | Palm Desert, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 6,195      
Initial Cost of Building & Improvements 8,922      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 6,195      
Carrying Amount of Building and Improvements 8,922      
Accumulated Depreciation 353      
Triple-net | Palm Harbor, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,306      
Initial Cost of Building & Improvements 13,811      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,306      
Carrying Amount of Building and Improvements 13,811      
Accumulated Depreciation 567      
Triple-net | Palm Harbor, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,281      
Initial Cost of Building & Improvements 22,457      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,281      
Carrying Amount of Building and Improvements 22,457      
Accumulated Depreciation 904      
Triple-net | Palos Heights, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,225      
Initial Cost of Building & Improvements 12,457      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,225      
Carrying Amount of Building and Improvements 12,457      
Accumulated Depreciation 468      
Triple-net | Palos Heights, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,431      
Initial Cost of Building & Improvements 28,812      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,431      
Carrying Amount of Building and Improvements 28,812      
Accumulated Depreciation 1,046      
Triple-net | Palos Heights, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,590      
Initial Cost of Building & Improvements 7,647      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,590      
Carrying Amount of Building and Improvements 7,647      
Accumulated Depreciation 288      
Triple-net | Panama City Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 900      
Initial Cost of Building & Improvements 6,402      
Cost Capitalized Subsequent to Acquisition 734      
Carrying Amount of Land 900      
Carrying Amount of Building and Improvements 7,136      
Accumulated Depreciation 1,340      
Triple-net | Paola, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 190      
Initial Cost of Building & Improvements 5,610      
Cost Capitalized Subsequent to Acquisition 59      
Carrying Amount of Land 190      
Carrying Amount of Building and Improvements 5,669      
Accumulated Depreciation 646      
Triple-net | Paris, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 490      
Initial Cost of Building & Improvements 5,452      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 490      
Carrying Amount of Building and Improvements 5,452      
Accumulated Depreciation 4,784      
Triple-net | Parma, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 960      
Initial Cost of Building & Improvements 12,722      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 960      
Carrying Amount of Building and Improvements 12,722      
Accumulated Depreciation 512      
Triple-net | Parma, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,833      
Initial Cost of Building & Improvements 10,318      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,833      
Carrying Amount of Building and Improvements 10,318      
Accumulated Depreciation 468      
Triple-net | Paulsboro, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,264      
Initial Cost of Building & Improvements 8,026      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,264      
Carrying Amount of Building and Improvements 8,026      
Accumulated Depreciation 327      
Triple-net | Perrysburg, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,456      
Initial Cost of Building & Improvements 5,433      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,456      
Carrying Amount of Building and Improvements 5,433      
Accumulated Depreciation 224      
Triple-net | Perrysburg, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,213      
Initial Cost of Building & Improvements 7,110      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,213      
Carrying Amount of Building and Improvements 7,110      
Accumulated Depreciation 271      
Triple-net | Philadelphia, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,930      
Initial Cost of Building & Improvements 10,433      
Cost Capitalized Subsequent to Acquisition 3,536      
Carrying Amount of Land 2,930      
Carrying Amount of Building and Improvements 13,969      
Accumulated Depreciation 3,647      
Triple-net | Phillipsburg, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 800      
Initial Cost of Building & Improvements 21,175      
Cost Capitalized Subsequent to Acquisition 238      
Carrying Amount of Land 800      
Carrying Amount of Building and Improvements 21,413      
Accumulated Depreciation 5,254      
Triple-net | Phillipsburg, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 300      
Initial Cost of Building & Improvements 8,114      
Cost Capitalized Subsequent to Acquisition 101      
Carrying Amount of Land 300      
Carrying Amount of Building and Improvements 8,215      
Accumulated Depreciation 2,015      
Triple-net | Pikesville, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 2,488      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 2,488      
Accumulated Depreciation 89      
Triple-net | Pikesville, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,247      
Initial Cost of Building & Improvements 8,383      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,247      
Carrying Amount of Building and Improvements 8,383      
Accumulated Depreciation 357      
Triple-net | Pinehurst, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 290      
Initial Cost of Building & Improvements 2,690      
Cost Capitalized Subsequent to Acquisition 517      
Carrying Amount of Land 290      
Carrying Amount of Building and Improvements 3,207      
Accumulated Depreciation 1,463      
Triple-net | Piqua, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 204      
Initial Cost of Building & Improvements 1,885      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 204      
Carrying Amount of Building and Improvements 1,885      
Accumulated Depreciation 1,069      
Triple-net | Piscataway, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,100      
Initial Cost of Building & Improvements 33,501      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,100      
Carrying Amount of Building and Improvements 33,501      
Accumulated Depreciation 2,369      
Triple-net | Pittsburgh, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 603      
Initial Cost of Building & Improvements 11,357      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 603      
Carrying Amount of Building and Improvements 11,357      
Accumulated Depreciation 455      
Triple-net | Pittsburgh, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,005      
Initial Cost of Building & Improvements 15,164      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,005      
Carrying Amount of Building and Improvements 15,164      
Accumulated Depreciation 584      
Triple-net | Pittsburgh, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,140      
Initial Cost of Building & Improvements 3,166      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,140      
Carrying Amount of Building and Improvements 3,166      
Accumulated Depreciation 123      
Triple-net | Pittsburgh, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 994      
Initial Cost of Building & Improvements 3,790      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 994      
Carrying Amount of Building and Improvements 3,790      
Accumulated Depreciation 210      
Triple-net | Pittsburgh, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 761      
Initial Cost of Building & Improvements 4,214      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 761      
Carrying Amount of Building and Improvements 4,214      
Accumulated Depreciation 157      
Triple-net | Pittsburgh, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,480      
Initial Cost of Building & Improvements 9,715      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,480      
Carrying Amount of Building and Improvements 9,715      
Accumulated Depreciation 423      
Triple-net | Pittsburgh, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,139      
Initial Cost of Building & Improvements 5,846      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,139      
Carrying Amount of Building and Improvements 5,846      
Accumulated Depreciation 249      
Triple-net | Pittsburgh, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,750      
Initial Cost of Building & Improvements 8,572      
Cost Capitalized Subsequent to Acquisition 6,320      
Carrying Amount of Land 1,750      
Carrying Amount of Building and Improvements 14,892      
Accumulated Depreciation 3,701      
Triple-net | Plainview, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,990      
Initial Cost of Building & Improvements 11,969      
Cost Capitalized Subsequent to Acquisition 1,713      
Carrying Amount of Land 3,990      
Carrying Amount of Building and Improvements 13,682      
Accumulated Depreciation 3,235      
Triple-net | Plano, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,840      
Initial Cost of Building & Improvements 20,152      
Cost Capitalized Subsequent to Acquisition 560      
Carrying Amount of Land 1,840      
Carrying Amount of Building and Improvements 20,712      
Accumulated Depreciation 2,190      
Triple-net | Plattsmouth, NE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 250      
Initial Cost of Building & Improvements 5,650      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 250      
Carrying Amount of Building and Improvements 5,650      
Accumulated Depreciation 1,535      
Triple-net | Poole, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,416      
Initial Cost of Building & Improvements 17,171      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,416      
Carrying Amount of Building and Improvements 17,171      
Accumulated Depreciation 50      
Triple-net | Potomac, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,448      
Initial Cost of Building & Improvements 14,626      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,448      
Carrying Amount of Building and Improvements 14,626      
Accumulated Depreciation 553      
Triple-net | Potomac, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,119      
Initial Cost of Building & Improvements 14,921      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,119      
Carrying Amount of Building and Improvements 14,921      
Accumulated Depreciation 583      
Triple-net | Pottstown, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 984      
Initial Cost of Building & Improvements 4,565      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 984      
Carrying Amount of Building and Improvements 4,565      
Accumulated Depreciation 191      
Triple-net | Pottsville, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 171      
Initial Cost of Building & Improvements 3,560      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 171      
Carrying Amount of Building and Improvements 3,560      
Accumulated Depreciation 140      
Triple-net | Prior Lake, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 13,567      
Initial Cost of Land 1,870      
Initial Cost of Building & Improvements 29,849      
Cost Capitalized Subsequent to Acquisition 300      
Carrying Amount of Land 1,870      
Carrying Amount of Building and Improvements 30,149      
Accumulated Depreciation 3,208      
Triple-net | Raleigh, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 7,598      
Initial Cost of Building & Improvements 88,870      
Cost Capitalized Subsequent to Acquisition 493      
Carrying Amount of Land 7,598      
Carrying Amount of Building and Improvements 89,363      
Accumulated Depreciation 6,542      
Triple-net | Raleigh, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,530      
Initial Cost of Building & Improvements 59,589      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,530      
Carrying Amount of Building and Improvements 59,589      
Accumulated Depreciation 11,396      
Triple-net | Raleigh, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,580      
Initial Cost of Building & Improvements 16,837      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,580      
Carrying Amount of Building and Improvements 16,837      
Accumulated Depreciation 3,433      
Triple-net | Reading, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 980      
Initial Cost of Building & Improvements 19,906      
Cost Capitalized Subsequent to Acquisition 140      
Carrying Amount of Land 980      
Carrying Amount of Building and Improvements 20,046      
Accumulated Depreciation 4,850      
Triple-net | Red Bank, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,050      
Initial Cost of Building & Improvements 21,275      
Cost Capitalized Subsequent to Acquisition 1,158      
Carrying Amount of Land 1,050      
Carrying Amount of Building and Improvements 22,433      
Accumulated Depreciation 4,785      
Triple-net | Redondo Beach, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 9,557      
Cost Capitalized Subsequent to Acquisition 653      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 10,210      
Accumulated Depreciation 6,913      
Triple-net | Reidsville, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 170      
Initial Cost of Building & Improvements 3,830      
Cost Capitalized Subsequent to Acquisition 907      
Carrying Amount of Land 170      
Carrying Amount of Building and Improvements 4,737      
Accumulated Depreciation 2,155      
Triple-net | Richardson, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,468      
Initial Cost of Building & Improvements 12,979      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,468      
Carrying Amount of Building and Improvements 12,979      
Accumulated Depreciation 511      
Triple-net | Richmond, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 700      
Initial Cost of Building & Improvements 14,222      
Cost Capitalized Subsequent to Acquisition 393      
Carrying Amount of Land 700      
Carrying Amount of Building and Improvements 14,615      
Accumulated Depreciation 1,699      
Triple-net | Richmond, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,261      
Initial Cost of Building & Improvements 17,980      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,261      
Carrying Amount of Building and Improvements 17,980      
Accumulated Depreciation 672      
Triple-net | Richmond, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,046      
Initial Cost of Building & Improvements 8,235      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,046      
Carrying Amount of Building and Improvements 8,235      
Accumulated Depreciation 330      
Triple-net | Roanoke, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 748      
Initial Cost of Building & Improvements 4,483      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 748      
Carrying Amount of Building and Improvements 4,483      
Accumulated Depreciation 715      
Triple-net | Rockville Centre, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,290      
Initial Cost of Building & Improvements 20,310      
Cost Capitalized Subsequent to Acquisition 1,379      
Carrying Amount of Land 4,290      
Carrying Amount of Building and Improvements 21,689      
Accumulated Depreciation 4,889      
Triple-net | Rockwall, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,220      
Initial Cost of Building & Improvements 17,650      
Cost Capitalized Subsequent to Acquisition 69      
Carrying Amount of Land 2,220      
Carrying Amount of Building and Improvements 17,719      
Accumulated Depreciation 2,049      
Triple-net | Romeoville, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,895      
Initial Cost of Building & Improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,895      
Carrying Amount of Building and Improvements 0      
Accumulated Depreciation 0      
Triple-net | Roseville, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,140      
Initial Cost of Building & Improvements 24,679      
Cost Capitalized Subsequent to Acquisition 100      
Carrying Amount of Land 2,140      
Carrying Amount of Building and Improvements 24,779      
Accumulated Depreciation 2,677      
Triple-net | Rugeley, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,900      
Initial Cost of Building & Improvements 10,262      
Cost Capitalized Subsequent to Acquisition 918      
Carrying Amount of Land 2,043      
Carrying Amount of Building and Improvements 11,037      
Accumulated Depreciation 1,976      
Triple-net | Ruston, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 710      
Initial Cost of Building & Improvements 9,790      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 710      
Carrying Amount of Building and Improvements 9,790      
Accumulated Depreciation 2,424      
Triple-net | S Holland, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,423      
Initial Cost of Building & Improvements 8,910      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,423      
Carrying Amount of Building and Improvements 8,910      
Accumulated Depreciation 359      
Triple-net | Salem, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 449      
Initial Cost of Building & Improvements 5,171      
Cost Capitalized Subsequent to Acquisition 1      
Carrying Amount of Land 449      
Carrying Amount of Building and Improvements 5,172      
Accumulated Depreciation 2,828      
Triple-net | Salisbury, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 370      
Initial Cost of Building & Improvements 5,697      
Cost Capitalized Subsequent to Acquisition 196      
Carrying Amount of Land 370      
Carrying Amount of Building and Improvements 5,893      
Accumulated Depreciation 2,561      
Triple-net | San Angelo, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 260      
Initial Cost of Building & Improvements 8,800      
Cost Capitalized Subsequent to Acquisition 425      
Carrying Amount of Land 260      
Carrying Amount of Building and Improvements 9,225      
Accumulated Depreciation 3,572      
Triple-net | San Angelo, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,050      
Initial Cost of Building & Improvements 24,689      
Cost Capitalized Subsequent to Acquisition 1,221      
Carrying Amount of Land 1,050      
Carrying Amount of Building and Improvements 25,910      
Accumulated Depreciation 3,682      
Triple-net | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,499      
Initial Cost of Building & Improvements 12,662      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,499      
Carrying Amount of Building and Improvements 12,662      
Accumulated Depreciation 493      
Triple-net | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 17,303      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 17,303      
Accumulated Depreciation 8,455      
Triple-net | San Diego, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 22,003      
Cost Capitalized Subsequent to Acquisition 1,845      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 23,848      
Accumulated Depreciation 6,664      
Triple-net | San Juan Capistrano, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,390      
Initial Cost of Building & Improvements 6,942      
Cost Capitalized Subsequent to Acquisition 1,434      
Carrying Amount of Land 1,390      
Carrying Amount of Building and Improvements 8,376      
Accumulated Depreciation 3,500      
Triple-net | Sand Springs, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 910      
Initial Cost of Building & Improvements 19,654      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 910      
Carrying Amount of Building and Improvements 19,654      
Accumulated Depreciation 3,861      
Triple-net | Sarasota, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 475      
Initial Cost of Building & Improvements 3,175      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 475      
Carrying Amount of Building and Improvements 3,175      
Accumulated Depreciation 1,991      
Triple-net | Sarasota, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,101      
Initial Cost of Building & Improvements 11,208      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,101      
Carrying Amount of Building and Improvements 11,208      
Accumulated Depreciation 701      
Triple-net | Sarasota, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,370      
Initial Cost of Building & Improvements 4,084      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,370      
Carrying Amount of Building and Improvements 4,084      
Accumulated Depreciation 164      
Triple-net | Sarasota, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,792      
Initial Cost of Building & Improvements 11,177      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,792      
Carrying Amount of Building and Improvements 11,177      
Accumulated Depreciation 434      
Triple-net | Sarasota, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,360      
Initial Cost of Building & Improvements 19,140      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,360      
Carrying Amount of Building and Improvements 19,140      
Accumulated Depreciation 4,182      
Triple-net | Sarasota, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 443      
Initial Cost of Building & Improvements 8,895      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 443      
Carrying Amount of Building and Improvements 8,895      
Accumulated Depreciation 382      
Triple-net | Scranton, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 440      
Initial Cost of Building & Improvements 17,609      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 440      
Carrying Amount of Building and Improvements 17,609      
Accumulated Depreciation 2,530      
Triple-net | Scranton, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 320      
Initial Cost of Building & Improvements 12,144      
Cost Capitalized Subsequent to Acquisition 1      
Carrying Amount of Land 320      
Carrying Amount of Building and Improvements 12,145      
Accumulated Depreciation 1,741      
Triple-net | Seminole, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,165      
Initial Cost of Building & Improvements 8,977      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,165      
Carrying Amount of Building and Improvements 8,977      
Accumulated Depreciation 373      
Triple-net | Seven Fields, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 484      
Initial Cost of Building & Improvements 4,663      
Cost Capitalized Subsequent to Acquisition 59      
Carrying Amount of Land 484      
Carrying Amount of Building and Improvements 4,722      
Accumulated Depreciation 2,585      
Triple-net | Sewell, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,127      
Initial Cost of Building & Improvements 14,095      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,127      
Carrying Amount of Building and Improvements 14,095      
Accumulated Depreciation 624      
Triple-net | Shawnee, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 80      
Initial Cost of Building & Improvements 1,400      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 80      
Carrying Amount of Building and Improvements 1,400      
Accumulated Depreciation 870      
Triple-net | Shelbyville, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 630      
Initial Cost of Building & Improvements 3,870      
Cost Capitalized Subsequent to Acquisition 630      
Carrying Amount of Land 630      
Carrying Amount of Building and Improvements 4,500      
Accumulated Depreciation 1,684      
Triple-net | Sherman, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 700      
Initial Cost of Building & Improvements 5,221      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 700      
Carrying Amount of Building and Improvements 5,221      
Accumulated Depreciation 1,838      
Triple-net | Silver Spring, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,469      
Initial Cost of Building & Improvements 10,395      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,469      
Carrying Amount of Building and Improvements 10,395      
Accumulated Depreciation 405      
Triple-net | Silver Spring, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,678      
Initial Cost of Building & Improvements 11,683      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,678      
Carrying Amount of Building and Improvements 11,683      
Accumulated Depreciation 485      
Triple-net | Silvis, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 880      
Initial Cost of Building & Improvements 16,420      
Cost Capitalized Subsequent to Acquisition 139      
Carrying Amount of Land 880      
Carrying Amount of Building and Improvements 16,559      
Accumulated Depreciation 4,135      
Triple-net | Sinking Spring, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,393      
Initial Cost of Building & Improvements 19,848      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,393      
Carrying Amount of Building and Improvements 19,848      
Accumulated Depreciation 764      
Triple-net | Sittingbourne, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,357      
Initial Cost of Building & Improvements 6,539      
Cost Capitalized Subsequent to Acquisition 597      
Carrying Amount of Land 1,460      
Carrying Amount of Building and Improvements 7,033      
Accumulated Depreciation 926      
Triple-net | Smithfield, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 290      
Initial Cost of Building & Improvements 5,680      
Cost Capitalized Subsequent to Acquisition 455      
Carrying Amount of Land 290      
Carrying Amount of Building and Improvements 6,135      
Accumulated Depreciation 2,497      
Triple-net | Smithfield, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 360      
Initial Cost of Building & Improvements 8,216      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 360      
Carrying Amount of Building and Improvements 8,216      
Accumulated Depreciation 1,177      
Triple-net | South Bend, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 670      
Initial Cost of Building & Improvements 17,770      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 670      
Carrying Amount of Building and Improvements 17,770      
Accumulated Depreciation 2,652      
Triple-net | South Point, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,135      
Initial Cost of Building & Improvements 9,390      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,135      
Carrying Amount of Building and Improvements 9,390      
Accumulated Depreciation 362      
Triple-net | Southampton, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,519      
Initial Cost of Building & Improvements 16,041      
Cost Capitalized Subsequent to Acquisition 710      
Carrying Amount of Land 1,581      
Carrying Amount of Building and Improvements 16,689      
Accumulated Depreciation 1,013      
Triple-net | Southbury, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,860      
Initial Cost of Building & Improvements 23,613      
Cost Capitalized Subsequent to Acquisition 958      
Carrying Amount of Land 1,860      
Carrying Amount of Building and Improvements 24,571      
Accumulated Depreciation 5,579      
Triple-net | Spokane, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,649      
Initial Cost of Building & Improvements 11,703      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,649      
Carrying Amount of Building and Improvements 11,703      
Accumulated Depreciation 456      
Triple-net | Springfield, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 990      
Initial Cost of Building & Improvements 13,378      
Cost Capitalized Subsequent to Acquisition 1,085      
Carrying Amount of Land 990      
Carrying Amount of Building and Improvements 14,463      
Accumulated Depreciation 2,121      
Triple-net | St. Louis, MO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,890      
Initial Cost of Building & Improvements 12,390      
Cost Capitalized Subsequent to Acquisition 837      
Carrying Amount of Land 1,890      
Carrying Amount of Building and Improvements 13,227      
Accumulated Depreciation 3,028      
Triple-net | St. Paul, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,100      
Initial Cost of Building & Improvements 33,019      
Cost Capitalized Subsequent to Acquisition 100      
Carrying Amount of Land 2,100      
Carrying Amount of Building and Improvements 33,119      
Accumulated Depreciation 3,546      
Triple-net | Stafford, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,009      
Initial Cost of Building & Improvements 8,238      
Cost Capitalized Subsequent to Acquisition 414      
Carrying Amount of Land 2,090      
Carrying Amount of Building and Improvements 8,571      
Accumulated Depreciation 750      
Triple-net | Stamford, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,820      
Initial Cost of Building & Improvements 3,238      
Cost Capitalized Subsequent to Acquisition 382      
Carrying Amount of Land 1,957      
Carrying Amount of Building and Improvements 3,483      
Accumulated Depreciation 489      
Triple-net | Statesville, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 150      
Initial Cost of Building & Improvements 1,447      
Cost Capitalized Subsequent to Acquisition 338      
Carrying Amount of Land 150      
Carrying Amount of Building and Improvements 1,785      
Accumulated Depreciation 788      
Triple-net | Statesville, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 310      
Initial Cost of Building & Improvements 6,183      
Cost Capitalized Subsequent to Acquisition 61      
Carrying Amount of Land 310      
Carrying Amount of Building and Improvements 6,244      
Accumulated Depreciation 2,662      
Triple-net | Statesville, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 140      
Initial Cost of Building & Improvements 3,627      
Cost Capitalized Subsequent to Acquisition 9      
Carrying Amount of Land 140      
Carrying Amount of Building and Improvements 3,636      
Accumulated Depreciation 1,589      
Triple-net | Staunton, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 899      
Initial Cost of Building & Improvements 6,391      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 899      
Carrying Amount of Building and Improvements 6,391      
Accumulated Depreciation 792      
Triple-net | Sterling Heights, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 790      
Initial Cost of Building & Improvements 10,787      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 790      
Carrying Amount of Building and Improvements 10,787      
Accumulated Depreciation 423      
Triple-net | Sterling Heights, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,583      
Initial Cost of Building & Improvements 15,639      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,583      
Carrying Amount of Building and Improvements 15,639      
Accumulated Depreciation 622      
Triple-net | Stillwater, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 80      
Initial Cost of Building & Improvements 1,400      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 80      
Carrying Amount of Building and Improvements 1,400      
Accumulated Depreciation 872      
Triple-net | Stratford-upon-Avon, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 790      
Initial Cost of Building & Improvements 14,508      
Cost Capitalized Subsequent to Acquisition 1,155      
Carrying Amount of Land 849      
Carrying Amount of Building and Improvements 15,604      
Accumulated Depreciation 1,901      
Triple-net | Stroudsburg, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 340      
Initial Cost of Building & Improvements 16,313      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 340      
Carrying Amount of Building and Improvements 16,313      
Accumulated Depreciation 2,619      
Triple-net | Summit, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,080      
Initial Cost of Building & Improvements 14,152      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,080      
Carrying Amount of Building and Improvements 14,152      
Accumulated Depreciation 3,422      
Triple-net | Sunbury, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 695      
Initial Cost of Building & Improvements 7,246      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 695      
Carrying Amount of Building and Improvements 7,246      
Accumulated Depreciation 273      
Triple-net | Sunninghill, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 11,632      
Initial Cost of Building & Improvements 42,233      
Cost Capitalized Subsequent to Acquisition 2,174      
Carrying Amount of Land 12,101      
Carrying Amount of Building and Improvements 43,938      
Accumulated Depreciation 2,925      
Triple-net | Sunnyvale, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,946      
Initial Cost of Building & Improvements 22,131      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,946      
Carrying Amount of Building and Improvements 22,131      
Accumulated Depreciation 829      
Triple-net | Superior, WI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,020      
Initial Cost of Building & Improvements 13,735      
Cost Capitalized Subsequent to Acquisition 6,159      
Carrying Amount of Land 1,020      
Carrying Amount of Building and Improvements 19,894      
Accumulated Depreciation 3,457      
Triple-net | Tacoma, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,522      
Initial Cost of Building & Improvements 8,576      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,522      
Carrying Amount of Building and Improvements 8,576      
Accumulated Depreciation 328      
Triple-net | Tampa, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,315      
Initial Cost of Building & Improvements 6,913      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,315      
Carrying Amount of Building and Improvements 6,913      
Accumulated Depreciation 313      
Triple-net | Terre Haute, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,370      
Initial Cost of Building & Improvements 18,016      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,370      
Carrying Amount of Building and Improvements 18,016      
Accumulated Depreciation 2,463      
Triple-net | Texarkana, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 192      
Initial Cost of Building & Improvements 1,403      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 192      
Carrying Amount of Building and Improvements 1,403      
Accumulated Depreciation 847      
Triple-net | The Villages, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,035      
Initial Cost of Building & Improvements 7,446      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,035      
Carrying Amount of Building and Improvements 7,446      
Accumulated Depreciation 1,327      
Triple-net | Thomasville, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 530      
Initial Cost of Building & Improvements 12,520      
Cost Capitalized Subsequent to Acquisition 1,347      
Carrying Amount of Land 530      
Carrying Amount of Building and Improvements 13,867      
Accumulated Depreciation 2,429      
Triple-net | Three Rivers, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,255      
Initial Cost of Building & Improvements 2,761      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,255      
Carrying Amount of Building and Improvements 2,761      
Accumulated Depreciation 142      
Triple-net | Tomball, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,050      
Initial Cost of Building & Improvements 13,300      
Cost Capitalized Subsequent to Acquisition 840      
Carrying Amount of Land 1,050      
Carrying Amount of Building and Improvements 14,140      
Accumulated Depreciation 3,171      
Triple-net | Toms River, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,466      
Initial Cost of Building & Improvements 23,311      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,466      
Carrying Amount of Building and Improvements 23,311      
Accumulated Depreciation 832      
Triple-net | Tonganoxie, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 310      
Initial Cost of Building & Improvements 3,690      
Cost Capitalized Subsequent to Acquisition 76      
Carrying Amount of Land 310      
Carrying Amount of Building and Improvements 3,766      
Accumulated Depreciation 473      
Triple-net | Topeka, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 260      
Initial Cost of Building & Improvements 12,712      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 260      
Carrying Amount of Building and Improvements 12,712      
Accumulated Depreciation 2,579      
Triple-net | Towson, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,715      
Initial Cost of Building & Improvements 13,115      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,715      
Carrying Amount of Building and Improvements 13,115      
Accumulated Depreciation 510      
Triple-net | Towson, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,100      
Initial Cost of Building & Improvements 6,468      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,100      
Carrying Amount of Building and Improvements 6,468      
Accumulated Depreciation 240      
Triple-net | Towson, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,527      
Initial Cost of Building & Improvements 3,128      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,527      
Carrying Amount of Building and Improvements 3,128      
Accumulated Depreciation 147      
Triple-net | Troy, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,381      
Initial Cost of Building & Improvements 24,452      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,381      
Carrying Amount of Building and Improvements 24,452      
Accumulated Depreciation 909      
Triple-net | Troy, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 200      
Initial Cost of Building & Improvements 2,000      
Cost Capitalized Subsequent to Acquisition 4,254      
Carrying Amount of Land 200      
Carrying Amount of Building and Improvements 6,254      
Accumulated Depreciation 2,345      
Triple-net | Trumbull, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,440      
Initial Cost of Building & Improvements 43,384      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,440      
Carrying Amount of Building and Improvements 43,384      
Accumulated Depreciation 10,012      
Triple-net | Tulsa, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,390      
Initial Cost of Building & Improvements 7,110      
Cost Capitalized Subsequent to Acquisition 1,102      
Carrying Amount of Land 1,390      
Carrying Amount of Building and Improvements 8,212      
Accumulated Depreciation 2,264      
Triple-net | Tulsa, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,320      
Initial Cost of Building & Improvements 10,087      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,320      
Carrying Amount of Building and Improvements 10,087      
Accumulated Depreciation 2,121      
Triple-net | Tulsa, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,100      
Initial Cost of Building & Improvements 27,007      
Cost Capitalized Subsequent to Acquisition 2,233      
Carrying Amount of Land 1,100      
Carrying Amount of Building and Improvements 29,240      
Accumulated Depreciation 2,334      
Triple-net | Tulsa, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 13,000      
Initial Cost of Land 1,752      
Initial Cost of Building & Improvements 28,421      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,752      
Carrying Amount of Building and Improvements 28,421      
Accumulated Depreciation 2,023      
Triple-net | Tulsa, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 890      
Initial Cost of Building & Improvements 9,410      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 890      
Carrying Amount of Building and Improvements 9,410      
Accumulated Depreciation 572      
Triple-net | Tustin, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 840      
Initial Cost of Building & Improvements 15,299      
Cost Capitalized Subsequent to Acquisition 537      
Carrying Amount of Land 840      
Carrying Amount of Building and Improvements 15,836      
Accumulated Depreciation 3,986      
Triple-net | Twinsburg, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,446      
Initial Cost of Building & Improvements 5,921      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,446      
Carrying Amount of Building and Improvements 5,921      
Accumulated Depreciation 255      
Triple-net | Tyler, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 650      
Initial Cost of Building & Improvements 5,268      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 650      
Carrying Amount of Building and Improvements 5,268      
Accumulated Depreciation 1,794      
Triple-net | Union, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,932      
Initial Cost of Building & Improvements 2,374      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,932      
Carrying Amount of Building and Improvements 2,374      
Accumulated Depreciation 142      
Triple-net | Valparaiso, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 112      
Initial Cost of Building & Improvements 2,558      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 112      
Carrying Amount of Building and Improvements 2,558      
Accumulated Depreciation 1,266      
Triple-net | Valparaiso, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 108      
Initial Cost of Building & Improvements 2,962      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 108      
Carrying Amount of Building and Improvements 2,962      
Accumulated Depreciation 1,449      
Triple-net | Vancouver, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,503      
Initial Cost of Building & Improvements 28,401      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,503      
Carrying Amount of Building and Improvements 28,401      
Accumulated Depreciation 1,047      
Triple-net | Venice, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,150      
Initial Cost of Building & Improvements 10,674      
Cost Capitalized Subsequent to Acquisition 108      
Carrying Amount of Land 1,150      
Carrying Amount of Building and Improvements 10,782      
Accumulated Depreciation 3,019      
Triple-net | Venice, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,246      
Initial Cost of Building & Improvements 10,097      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,246      
Carrying Amount of Building and Improvements 10,097      
Accumulated Depreciation 418      
Triple-net | Vero Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 263      
Initial Cost of Building & Improvements 3,187      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 263      
Carrying Amount of Building and Improvements 3,187      
Accumulated Depreciation 1,550      
Triple-net | Vero Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 297      
Initial Cost of Building & Improvements 3,263      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 297      
Carrying Amount of Building and Improvements 3,263      
Accumulated Depreciation 1,596      
Triple-net | Virginia Beach, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,540      
Initial Cost of Building & Improvements 22,593      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,540      
Carrying Amount of Building and Improvements 22,593      
Accumulated Depreciation 3,282      
Triple-net | Voorhees, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,800      
Initial Cost of Building & Improvements 37,299      
Cost Capitalized Subsequent to Acquisition 671      
Carrying Amount of Land 1,800      
Carrying Amount of Building and Improvements 37,970      
Accumulated Depreciation 9,153      
Triple-net | Voorhees, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,100      
Initial Cost of Building & Improvements 25,950      
Cost Capitalized Subsequent to Acquisition 26      
Carrying Amount of Land 3,100      
Carrying Amount of Building and Improvements 25,976      
Accumulated Depreciation 5,244      
Triple-net | Voorhees, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,193      
Initial Cost of Building & Improvements 6,992      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,193      
Carrying Amount of Building and Improvements 6,992      
Accumulated Depreciation 301      
Triple-net | W Palm Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,175      
Initial Cost of Building & Improvements 8,297      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,175      
Carrying Amount of Building and Improvements 8,297      
Accumulated Depreciation 350      
Triple-net | W Palm Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,921      
Initial Cost of Building & Improvements 5,733      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,921      
Carrying Amount of Building and Improvements 5,733      
Accumulated Depreciation 234      
Triple-net | Wabash, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 670      
Initial Cost of Building & Improvements 14,588      
Cost Capitalized Subsequent to Acquisition 1      
Carrying Amount of Land 670      
Carrying Amount of Building and Improvements 14,589      
Accumulated Depreciation 2,269      
Triple-net | Waconia, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 890      
Initial Cost of Building & Improvements 14,726      
Cost Capitalized Subsequent to Acquisition 4,495      
Carrying Amount of Land 890      
Carrying Amount of Building and Improvements 19,221      
Accumulated Depreciation 4,086      
Triple-net | Wake Forest, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 200      
Initial Cost of Building & Improvements 3,003      
Cost Capitalized Subsequent to Acquisition 2,039      
Carrying Amount of Land 200      
Carrying Amount of Building and Improvements 5,042      
Accumulated Depreciation 2,420      
Triple-net | Wallingford, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,356      
Initial Cost of Building & Improvements 6,489      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,356      
Carrying Amount of Building and Improvements 6,489      
Accumulated Depreciation 285      
Triple-net | Walnut Creek, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,358      
Initial Cost of Building & Improvements 18,413      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,358      
Carrying Amount of Building and Improvements 18,413      
Accumulated Depreciation 708      
Triple-net | Walnut Creek, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,394      
Initial Cost of Building & Improvements 39,096      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 5,394      
Carrying Amount of Building and Improvements 39,096      
Accumulated Depreciation 1,429      
Triple-net | Walsall, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,184      
Initial Cost of Building & Improvements 8,562      
Cost Capitalized Subsequent to Acquisition 737      
Carrying Amount of Land 1,274      
Carrying Amount of Building and Improvements 9,209      
Accumulated Depreciation 1,189      
Triple-net | Wamego, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 40      
Initial Cost of Building & Improvements 2,510      
Cost Capitalized Subsequent to Acquisition 57      
Carrying Amount of Land 40      
Carrying Amount of Building and Improvements 2,567      
Accumulated Depreciation 298      
Triple-net | Wareham, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 875      
Initial Cost of Building & Improvements 10,313      
Cost Capitalized Subsequent to Acquisition 1,701      
Carrying Amount of Land 875      
Carrying Amount of Building and Improvements 12,014      
Accumulated Depreciation 5,798      
Triple-net | Warren, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,000      
Initial Cost of Building & Improvements 30,810      
Cost Capitalized Subsequent to Acquisition 1,337      
Carrying Amount of Land 2,000      
Carrying Amount of Building and Improvements 32,147      
Accumulated Depreciation 6,904      
Triple-net | Waterloo, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 605      
Initial Cost of Building & Improvements 3,031      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 605      
Carrying Amount of Building and Improvements 3,031      
Accumulated Depreciation 129      
Triple-net | Waxahachie, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 650      
Initial Cost of Building & Improvements 5,763      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 650      
Carrying Amount of Building and Improvements 5,763      
Accumulated Depreciation 1,838      
Triple-net | Wayne, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,427      
Initial Cost of Building & Improvements 15,679      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,427      
Carrying Amount of Building and Improvements 15,679      
Accumulated Depreciation 766      
Triple-net | Weatherford, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 660      
Initial Cost of Building & Improvements 5,261      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 660      
Carrying Amount of Building and Improvements 5,261      
Accumulated Depreciation 1,805      
Triple-net | Wellingborough, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,480      
Initial Cost of Building & Improvements 5,724      
Cost Capitalized Subsequent to Acquisition 544      
Carrying Amount of Land 1,592      
Carrying Amount of Building and Improvements 6,156      
Accumulated Depreciation 890      
Triple-net | West Bend, WI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 620      
Initial Cost of Building & Improvements 17,790      
Cost Capitalized Subsequent to Acquisition 38      
Carrying Amount of Land 620      
Carrying Amount of Building and Improvements 17,828      
Accumulated Depreciation 3,783      
Triple-net | West Des Moines, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 828      
Initial Cost of Building & Improvements 5,104      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 828      
Carrying Amount of Building and Improvements 5,104      
Accumulated Depreciation 219      
Triple-net | West Milford, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,960      
Initial Cost of Building & Improvements 24,614      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,960      
Carrying Amount of Building and Improvements 24,614      
Accumulated Depreciation 672      
Triple-net | West Orange, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,347      
Initial Cost of Building & Improvements 19,395      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,347      
Carrying Amount of Building and Improvements 19,395      
Accumulated Depreciation 888      
Triple-net | West Reading, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 890      
Initial Cost of Building & Improvements 12,122      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 890      
Carrying Amount of Building and Improvements 12,122      
Accumulated Depreciation 441      
Triple-net | Westerville, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 740      
Initial Cost of Building & Improvements 8,287      
Cost Capitalized Subsequent to Acquisition 4,076      
Carrying Amount of Land 740      
Carrying Amount of Building and Improvements 12,363      
Accumulated Depreciation 10,273      
Triple-net | Westerville, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,420      
Initial Cost of Building & Improvements 5,373      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,420      
Carrying Amount of Building and Improvements 5,373      
Accumulated Depreciation 218      
Triple-net | Westerville, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,582      
Initial Cost of Building & Improvements 10,282      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,582      
Carrying Amount of Building and Improvements 10,282      
Accumulated Depreciation 424      
Triple-net | Westfield, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 890      
Initial Cost of Building & Improvements 15,964      
Cost Capitalized Subsequent to Acquisition 1      
Carrying Amount of Land 890      
Carrying Amount of Building and Improvements 15,965      
Accumulated Depreciation 2,462      
Triple-net | Westlake, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 855      
Initial Cost of Building & Improvements 11,966      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 855      
Carrying Amount of Building and Improvements 11,966      
Accumulated Depreciation 474      
Triple-net | Weston Super Mare, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,517      
Initial Cost of Building & Improvements 7,054      
Cost Capitalized Subsequent to Acquisition 723      
Carrying Amount of Land 2,707      
Carrying Amount of Building and Improvements 7,587      
Accumulated Depreciation 1,290      
Triple-net | Wheaton, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,864      
Initial Cost of Building & Improvements 3,790      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,864      
Carrying Amount of Building and Improvements 3,790      
Accumulated Depreciation 159      
Triple-net | Whippany, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,571      
Initial Cost of Building & Improvements 14,982      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,571      
Carrying Amount of Building and Improvements 14,982      
Accumulated Depreciation 597      
Triple-net | Wichita, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,400      
Initial Cost of Building & Improvements 11,000      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,400      
Carrying Amount of Building and Improvements 11,000      
Accumulated Depreciation 5,288      
Triple-net | Wichita, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 860      
Initial Cost of Building & Improvements 8,873      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 860      
Carrying Amount of Building and Improvements 8,873      
Accumulated Depreciation 2,058      
Triple-net | Wichita, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 12,545      
Initial Cost of Land 630      
Initial Cost of Building & Improvements 19,747      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 630      
Carrying Amount of Building and Improvements 19,747      
Accumulated Depreciation 3,840      
Triple-net | Wichita, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 260      
Initial Cost of Building & Improvements 2,240      
Cost Capitalized Subsequent to Acquisition 129      
Carrying Amount of Land 260      
Carrying Amount of Building and Improvements 2,369      
Accumulated Depreciation 277      
Triple-net | Wichita, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 900      
Initial Cost of Building & Improvements 10,134      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 900      
Carrying Amount of Building and Improvements 10,134      
Accumulated Depreciation 2,218      
Triple-net | Wilkes-Barre, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 753      
Initial Cost of Building & Improvements 3,457      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 753      
Carrying Amount of Building and Improvements 3,457      
Accumulated Depreciation 160      
Triple-net | Williamsburg, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,187      
Initial Cost of Building & Improvements 5,728      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,187      
Carrying Amount of Building and Improvements 5,728      
Accumulated Depreciation 722      
Triple-net | Williamsport, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 919      
Initial Cost of Building & Improvements 6,926      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 919      
Carrying Amount of Building and Improvements 6,926      
Accumulated Depreciation 276      
Triple-net | Williamsport, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 780      
Initial Cost of Building & Improvements 1,899      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 780      
Carrying Amount of Building and Improvements 1,899      
Accumulated Depreciation 100      
Triple-net | Williamstown, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 70      
Initial Cost of Building & Improvements 6,430      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 70      
Carrying Amount of Building and Improvements 6,430      
Accumulated Depreciation 2,649      
Triple-net | Willoughby, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,774      
Initial Cost of Building & Improvements 8,655      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,774      
Carrying Amount of Building and Improvements 8,655      
Accumulated Depreciation 349      
Triple-net | Wilmington, DE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 800      
Initial Cost of Building & Improvements 9,494      
Cost Capitalized Subsequent to Acquisition 114      
Carrying Amount of Land 800      
Carrying Amount of Building and Improvements 9,608      
Accumulated Depreciation 2,481      
Triple-net | Wilmington, DE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,376      
Initial Cost of Building & Improvements 13,454      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,376      
Carrying Amount of Building and Improvements 13,454      
Accumulated Depreciation 525      
Triple-net | Wilmington, DE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,843      
Initial Cost of Building & Improvements 36,959      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,843      
Carrying Amount of Building and Improvements 36,959      
Accumulated Depreciation 1,388      
Triple-net | Wilmington, DE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,266      
Initial Cost of Building & Improvements 9,503      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,266      
Carrying Amount of Building and Improvements 9,503      
Accumulated Depreciation 381      
Triple-net | Wilmington, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 210      
Initial Cost of Building & Improvements 2,991      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 210      
Carrying Amount of Building and Improvements 2,991      
Accumulated Depreciation 1,630      
Triple-net | Wilmington, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 400      
Initial Cost of Building & Improvements 15,355      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 400      
Carrying Amount of Building and Improvements 15,355      
Accumulated Depreciation 2,307      
Triple-net | Windsor, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,148      
Initial Cost of Building & Improvements 6,514      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,148      
Carrying Amount of Building and Improvements 6,514      
Accumulated Depreciation 828      
Triple-net | Winston-Salem, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 360      
Initial Cost of Building & Improvements 2,514      
Cost Capitalized Subsequent to Acquisition 488      
Carrying Amount of Land 360      
Carrying Amount of Building and Improvements 3,002      
Accumulated Depreciation 1,337      
Triple-net | Winter Garden, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,110      
Initial Cost of Building & Improvements 7,937      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,110      
Carrying Amount of Building and Improvements 7,937      
Accumulated Depreciation 1,618      
Triple-net | Winter Springs, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,152      
Initial Cost of Building & Improvements 14,826      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,152      
Carrying Amount of Building and Improvements 14,826      
Accumulated Depreciation 573      
Triple-net | Witherwack, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 944      
Initial Cost of Building & Improvements 6,915      
Cost Capitalized Subsequent to Acquisition 593      
Carrying Amount of Land 1,015      
Carrying Amount of Building and Improvements 7,437      
Accumulated Depreciation 1,265      
Triple-net | Wolverhampton, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,573      
Initial Cost of Building & Improvements 6,678      
Cost Capitalized Subsequent to Acquisition 624      
Carrying Amount of Land 1,692      
Carrying Amount of Building and Improvements 7,183      
Accumulated Depreciation 1,232      
Triple-net | Woodbury, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,317      
Initial Cost of Building & Improvements 20,935      
Cost Capitalized Subsequent to Acquisition 298      
Carrying Amount of Land 1,317      
Carrying Amount of Building and Improvements 21,233      
Accumulated Depreciation 1,665      
Triple-net | Woodstock, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 594      
Initial Cost of Building & Improvements 5,108      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 594      
Carrying Amount of Building and Improvements 5,108      
Accumulated Depreciation 594      
Triple-net | Worcester, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,500      
Initial Cost of Building & Improvements 54,099      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,500      
Carrying Amount of Building and Improvements 54,099      
Accumulated Depreciation 14,483      
Triple-net | Worcester, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,300      
Initial Cost of Building & Improvements 9,060      
Cost Capitalized Subsequent to Acquisition 6,000      
Carrying Amount of Land 2,300      
Carrying Amount of Building and Improvements 15,060      
Accumulated Depreciation 4,863      
Triple-net | Yardley, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 773      
Initial Cost of Building & Improvements 14,918      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 773      
Carrying Amount of Building and Improvements 14,918      
Accumulated Depreciation 609      
Triple-net | Yardley, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,561      
Initial Cost of Building & Improvements 9,442      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,561      
Carrying Amount of Building and Improvements 9,442      
Accumulated Depreciation 459      
Triple-net | Yeadon, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,075      
Initial Cost of Building & Improvements 10,694      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,075      
Carrying Amount of Building and Improvements 10,694      
Accumulated Depreciation 401      
Triple-net | York, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 976      
Initial Cost of Building & Improvements 9,357      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 976      
Carrying Amount of Building and Improvements 9,357      
Accumulated Depreciation 372      
Triple-net | York, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,050      
Initial Cost of Building & Improvements 4,212      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,050      
Carrying Amount of Building and Improvements 4,212      
Accumulated Depreciation 198      
Triple-net | York, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,121      
Initial Cost of Building & Improvements 7,586      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,121      
Carrying Amount of Building and Improvements 7,586      
Accumulated Depreciation 322      
Triple-net | York, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,961      
Initial Cost of Building & Improvements 8,266      
Cost Capitalized Subsequent to Acquisition 848      
Carrying Amount of Land 3,185      
Carrying Amount of Building and Improvements 8,890      
Accumulated Depreciation 1,225      
Triple-net | Youngsville, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 380      
Initial Cost of Building & Improvements 10,686      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 380      
Carrying Amount of Building and Improvements 10,686      
Accumulated Depreciation 1,563      
Triple-net | Zephyrhills, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,131      
Initial Cost of Building & Improvements 6,671      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,131      
Carrying Amount of Building and Improvements 6,671      
Accumulated Depreciation 297      
Triple-net | Zionsville, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,610      
Initial Cost of Building & Improvements 22,400      
Cost Capitalized Subsequent to Acquisition 1,683      
Carrying Amount of Land 1,609      
Carrying Amount of Building and Improvements 24,084      
Accumulated Depreciation $ 5,782