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Schedule III - Real Estate and Accumulated Depreciation - Triple-net (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances $ 2,202,312      
Initial cost of land and land improvements 3,629,663      
Initial cost of building and improvements 28,865,012      
Cost Capitalized Subsequent to Acquisition 5,167,480      
Carrying amount of land and land improvements 3,968,430      
Carrying amount of building and improvements 33,637,317      
Accumulated depreciation 6,910,114 $ 6,104,297 $ 5,715,459 $ 5,499,958
Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 72,536      
Initial cost of land and land improvements 911,678      
Initial cost of building and improvements 7,485,316      
Cost Capitalized Subsequent to Acquisition 592,881      
Carrying amount of land and land improvements 955,620      
Carrying amount of building and improvements 8,034,255      
Accumulated depreciation 1,459,518      
Abilene, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 950      
Initial cost of building and improvements 20,987      
Cost Capitalized Subsequent to Acquisition 11,660      
Carrying amount of land and land improvements 950      
Carrying amount of building and improvements 32,647      
Accumulated depreciation 5,156      
Abilene, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 990      
Initial cost of building and improvements 8,187      
Cost Capitalized Subsequent to Acquisition 1,089      
Carrying amount of land and land improvements 990      
Carrying amount of building and improvements 9,276      
Accumulated depreciation 1,784      
Agawam, MA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 880      
Initial cost of building and improvements 13,130      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 880      
Carrying amount of building and improvements 13,130      
Accumulated depreciation 9,152      
Akron, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 633      
Initial cost of building and improvements 3,002      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 633      
Carrying amount of building and improvements 3,002      
Accumulated depreciation 291      
Alexandria, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,452      
Initial cost of building and improvements 6,826      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,452      
Carrying amount of building and improvements 6,826      
Accumulated depreciation 639      
Alhambra, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 600      
Initial cost of building and improvements 6,305      
Cost Capitalized Subsequent to Acquisition 8,847      
Carrying amount of land and land improvements 600      
Carrying amount of building and improvements 15,152      
Accumulated depreciation 3,181      
Allen Park, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,767      
Initial cost of building and improvements 5,025      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,767      
Carrying amount of building and improvements 5,025      
Accumulated depreciation 476      
Allentown, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 494      
Initial cost of building and improvements 11,845      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 494      
Carrying amount of building and improvements 11,845      
Accumulated depreciation 1,094      
Allentown, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,491      
Initial cost of building and improvements 4,822      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,491      
Carrying amount of building and improvements 4,822      
Accumulated depreciation 467      
Alma, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,267      
Initial cost of building and improvements 6,543      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,267      
Carrying amount of building and improvements 6,543      
Accumulated depreciation 326      
Ames, IA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 330      
Initial cost of building and improvements 8,870      
Cost Capitalized Subsequent to Acquisition 758      
Carrying amount of land and land improvements 330      
Carrying amount of building and improvements 9,628      
Accumulated depreciation 2,799      
Ann Arbor, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,172      
Initial cost of building and improvements 11,123      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,172      
Carrying amount of building and improvements 11,123      
Accumulated depreciation 1,109      
Annandale, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,687      
Initial cost of building and improvements 18,974      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,687      
Carrying amount of building and improvements 18,974      
Accumulated depreciation 1,714      
Arlington, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,016      
Initial cost of building and improvements 8,801      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,016      
Carrying amount of building and improvements 8,801      
Accumulated depreciation 811      
Asheboro, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 290      
Initial cost of building and improvements 5,032      
Cost Capitalized Subsequent to Acquisition 312      
Carrying amount of land and land improvements 290      
Carrying amount of building and improvements 5,344      
Accumulated depreciation 2,511      
Asheville, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 204      
Initial cost of building and improvements 3,489      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 204      
Carrying amount of building and improvements 3,489      
Accumulated depreciation 2,099      
Asheville, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 280      
Initial cost of building and improvements 1,955      
Cost Capitalized Subsequent to Acquisition 671      
Carrying amount of land and land improvements 280      
Carrying amount of building and improvements 2,626      
Accumulated depreciation 1,188      
Atchison, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 140      
Initial cost of building and improvements 5,610      
Cost Capitalized Subsequent to Acquisition 23      
Carrying amount of land and land improvements 140      
Carrying amount of building and improvements 5,633      
Accumulated depreciation 951      
Austin, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,691      
Initial cost of building and improvements 5,005      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,691      
Carrying amount of building and improvements 5,005      
Accumulated depreciation 616      
Avon, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,830      
Initial cost of building and improvements 14,470      
Cost Capitalized Subsequent to Acquisition 1,201      
Carrying amount of land and land improvements 1,830      
Carrying amount of building and improvements 15,671      
Accumulated depreciation 4,763      
Avon, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 900      
Initial cost of building and improvements 19,444      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 900      
Carrying amount of building and improvements 19,444      
Accumulated depreciation 4,031      
Avon, CT | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,132      
Initial cost of building and improvements 7,624      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,132      
Carrying amount of building and improvements 7,624      
Accumulated depreciation 861      
Azusa, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 570      
Initial cost of building and improvements 3,141      
Cost Capitalized Subsequent to Acquisition 7,430      
Carrying amount of land and land improvements 570      
Carrying amount of building and improvements 10,571      
Accumulated depreciation 4,041      
Bad Axe, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,317      
Initial cost of building and improvements 5,972      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,317      
Carrying amount of building and improvements 5,972      
Accumulated depreciation 333      
Baldwin City, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 190      
Initial cost of building and improvements 4,810      
Cost Capitalized Subsequent to Acquisition 55      
Carrying amount of land and land improvements 190      
Carrying amount of building and improvements 4,865      
Accumulated depreciation 842      
Baltimore, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,306      
Initial cost of building and improvements 4,303      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,306      
Carrying amount of building and improvements 4,303      
Accumulated depreciation 434      
Baltimore, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,069      
Initial cost of building and improvements 3,148      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,069      
Carrying amount of building and improvements 3,148      
Accumulated depreciation 338      
Barberton, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,307      
Initial cost of building and improvements 9,310      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,307      
Carrying amount of building and improvements 9,310      
Accumulated depreciation 853      
Bartlesville, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 100      
Initial cost of building and improvements 1,380      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 100      
Carrying amount of building and improvements 1,380      
Accumulated depreciation 924      
Bay City, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 633      
Initial cost of building and improvements 2,619      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 633      
Carrying amount of building and improvements 2,619      
Accumulated depreciation 274      
Bedford, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 637      
Initial cost of building and improvements 4,432      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 637      
Carrying amount of building and improvements 4,432      
Accumulated depreciation 481      
Belmont, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,000      
Initial cost of building and improvements 23,526      
Cost Capitalized Subsequent to Acquisition 1,728      
Carrying amount of land and land improvements 3,000      
Carrying amount of building and improvements 25,254      
Accumulated depreciation 8,439      
Belvidere, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,001      
Initial cost of building and improvements 26,191      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,001      
Carrying amount of building and improvements 26,191      
Accumulated depreciation 2,457      
Benbrook, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,550      
Initial cost of building and improvements 13,553      
Cost Capitalized Subsequent to Acquisition 2,747      
Carrying amount of land and land improvements 1,550      
Carrying amount of building and improvements 16,300      
Accumulated depreciation 4,093      
Berkeley, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,421      
Initial cost of land and land improvements 3,050      
Initial cost of building and improvements 32,677      
Cost Capitalized Subsequent to Acquisition 5,008      
Carrying amount of land and land improvements 3,050      
Carrying amount of building and improvements 37,685      
Accumulated depreciation 8,017      
Bethel Park, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,700      
Initial cost of building and improvements 16,007      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,700      
Carrying amount of building and improvements 16,007      
Accumulated depreciation 5,546      
Bethel Park, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,008      
Initial cost of building and improvements 6,740      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,008      
Carrying amount of building and improvements 6,740      
Accumulated depreciation 662      
Bethesda, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,218      
Initial cost of building and improvements 6,869      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,218      
Carrying amount of building and improvements 6,869      
Accumulated depreciation 621      
Bethlehem, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,191      
Initial cost of building and improvements 16,887      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,191      
Carrying amount of building and improvements 16,887      
Accumulated depreciation 1,485      
Bethlehem, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,143      
Initial cost of building and improvements 13,588      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,143      
Carrying amount of building and improvements 13,588      
Accumulated depreciation 1,202      
Beverly, MA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,879      
Initial cost of building and improvements 10,378      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 5,879      
Carrying amount of building and improvements 10,378      
Accumulated depreciation 0      
Beverly Hills, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,000      
Initial cost of building and improvements 13,385      
Cost Capitalized Subsequent to Acquisition 203      
Carrying amount of land and land improvements 6,000      
Carrying amount of building and improvements 13,588      
Accumulated depreciation 2,442      
Bexleyheath, UKI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,750      
Initial cost of building and improvements 10,807      
Cost Capitalized Subsequent to Acquisition 1,373      
Carrying amount of land and land improvements 4,104      
Carrying amount of building and improvements 11,826      
Accumulated depreciation 2,222      
Bingham Farms, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 781      
Initial cost of building and improvements 15,671      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 781      
Carrying amount of building and improvements 15,671      
Accumulated depreciation 1,429      
Birmingham, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,647      
Initial cost of building and improvements 14,853      
Cost Capitalized Subsequent to Acquisition 1,555      
Carrying amount of land and land improvements 1,802      
Carrying amount of building and improvements 16,253      
Accumulated depreciation 2,839      
Birmingham, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,591      
Initial cost of building and improvements 19,092      
Cost Capitalized Subsequent to Acquisition 1,951      
Carrying amount of land and land improvements 1,742      
Carrying amount of building and improvements 20,892      
Accumulated depreciation 3,596      
Birmingham, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,462      
Initial cost of building and improvements 9,056      
Cost Capitalized Subsequent to Acquisition 992      
Carrying amount of land and land improvements 1,600      
Carrying amount of building and improvements 9,910      
Accumulated depreciation 1,757      
Birmingham, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,184      
Initial cost of building and improvements 10,085      
Cost Capitalized Subsequent to Acquisition 1,063      
Carrying amount of land and land improvements 1,296      
Carrying amount of building and improvements 11,036      
Accumulated depreciation 1,914      
Bloomington, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 670      
Initial cost of building and improvements 17,423      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 670      
Carrying amount of building and improvements 17,423      
Accumulated depreciation 3,136      
Boca Raton, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,200      
Initial cost of building and improvements 4,974      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,200      
Carrying amount of building and improvements 4,974      
Accumulated depreciation 591      
Boca Raton, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,826      
Initial cost of building and improvements 4,061      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,826      
Carrying amount of building and improvements 4,061      
Accumulated depreciation 431      
Bossier City, LA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,009      
Initial cost of building and improvements 31,198      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,009      
Carrying amount of building and improvements 31,198      
Accumulated depreciation 0      
Boulder, CO | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,601      
Initial cost of building and improvements 21,364      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,601      
Carrying amount of building and improvements 21,364      
Accumulated depreciation 2,084      
Bournemouth, UKK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,636      
Initial cost of building and improvements 18,273      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,636      
Carrying amount of building and improvements 18,273      
Accumulated depreciation 1,198      
Boynton Beach, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,138      
Initial cost of building and improvements 10,201      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,138      
Carrying amount of building and improvements 10,201      
Accumulated depreciation 1,018      
Boynton Beach, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,804      
Initial cost of building and improvements 14,222      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,804      
Carrying amount of building and improvements 14,222      
Accumulated depreciation 1,296      
Bracknell, UKJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,081      
Initial cost of building and improvements 11,470      
Cost Capitalized Subsequent to Acquisition 491      
Carrying amount of land and land improvements 4,320      
Carrying amount of building and improvements 11,722      
Accumulated depreciation 1,347      
Bradenton, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 252      
Initial cost of building and improvements 3,298      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 252      
Carrying amount of building and improvements 3,298      
Accumulated depreciation 2,221      
Bradenton, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 480      
Initial cost of building and improvements 9,953      
Cost Capitalized Subsequent to Acquisition 157      
Carrying amount of land and land improvements 480      
Carrying amount of building and improvements 10,110      
Accumulated depreciation 2,511      
Braintree, UKH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 13,296      
Cost Capitalized Subsequent to Acquisition 1,254      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 14,550      
Accumulated depreciation 2,812      
Braintree, MA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 170      
Initial cost of building and improvements 7,157      
Cost Capitalized Subsequent to Acquisition 1,290      
Carrying amount of land and land improvements 170      
Carrying amount of building and improvements 8,447      
Accumulated depreciation 8,447      
Brecksville, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 990      
Initial cost of building and improvements 19,353      
Cost Capitalized Subsequent to Acquisition 451      
Carrying amount of land and land improvements 990      
Carrying amount of building and improvements 19,804      
Accumulated depreciation 3,977      
Brick, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,290      
Initial cost of building and improvements 25,247      
Cost Capitalized Subsequent to Acquisition 1,330      
Carrying amount of land and land improvements 1,290      
Carrying amount of building and improvements 26,577      
Accumulated depreciation 7,402      
Bridgewater, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,800      
Initial cost of building and improvements 31,810      
Cost Capitalized Subsequent to Acquisition 1,678      
Carrying amount of land and land improvements 1,800      
Carrying amount of building and improvements 33,488      
Accumulated depreciation 9,305      
Bristol, UKK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 22,605      
Carrying amount of land and land improvements 4,330      
Carrying amount of building and improvements 18,275      
Accumulated depreciation 2,414      
Bristol, UKK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 15,566      
Carrying amount of land and land improvements 2,309      
Carrying amount of building and improvements 13,257      
Accumulated depreciation 1,077      
Brooks, AB | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 376      
Initial cost of building and improvements 4,951      
Cost Capitalized Subsequent to Acquisition 453      
Carrying amount of land and land improvements 407      
Carrying amount of building and improvements 5,373      
Accumulated depreciation 1,079      
Broomfield, CO | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 28,980      
Carrying amount of land and land improvements 2,566      
Carrying amount of building and improvements 26,414      
Accumulated depreciation 0      
Bucyrus, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,119      
Initial cost of building and improvements 2,611      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,119      
Carrying amount of building and improvements 2,611      
Accumulated depreciation 293      
Burleson, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 670      
Initial cost of building and improvements 13,985      
Cost Capitalized Subsequent to Acquisition 2,457      
Carrying amount of land and land improvements 670      
Carrying amount of building and improvements 16,442      
Accumulated depreciation 4,365      
Burlington, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 280      
Initial cost of building and improvements 4,297      
Cost Capitalized Subsequent to Acquisition 849      
Carrying amount of land and land improvements 280      
Carrying amount of building and improvements 5,146      
Accumulated depreciation 2,397      
Burlington, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 460      
Initial cost of building and improvements 5,467      
Cost Capitalized Subsequent to Acquisition 110      
Carrying amount of land and land improvements 460      
Carrying amount of building and improvements 5,577      
Accumulated depreciation 2,659      
Burnaby, BC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,623      
Initial cost of building and improvements 13,844      
Cost Capitalized Subsequent to Acquisition 1,796      
Carrying amount of land and land improvements 8,257      
Carrying amount of building and improvements 15,006      
Accumulated depreciation 3,054      
Calgary, AB | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,341      
Initial cost of building and improvements 42,768      
Cost Capitalized Subsequent to Acquisition 3,820      
Carrying amount of land and land improvements 2,536      
Carrying amount of building and improvements 46,393      
Accumulated depreciation 8,976      
Calgary, AB | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,569      
Initial cost of building and improvements 70,199      
Cost Capitalized Subsequent to Acquisition 6,224      
Carrying amount of land and land improvements 4,948      
Carrying amount of building and improvements 76,044      
Accumulated depreciation 14,586      
Camp Hill, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 517      
Initial cost of building and improvements 3,596      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 517      
Carrying amount of building and improvements 3,596      
Accumulated depreciation 339      
Canonsburg, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 911      
Initial cost of building and improvements 4,828      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 911      
Carrying amount of building and improvements 4,828      
Accumulated depreciation 497      
Canton, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 300      
Initial cost of building and improvements 2,098      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 300      
Carrying amount of building and improvements 2,098      
Accumulated depreciation 1,264      
Canton, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,399      
Initial cost of building and improvements 16,966      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,399      
Carrying amount of building and improvements 16,966      
Accumulated depreciation 1,542      
Cape Coral, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 530      
Initial cost of building and improvements 3,281      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 530      
Carrying amount of building and improvements 3,281      
Accumulated depreciation 1,707      
Cape Coral, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,706      
Initial cost of land and land improvements 760      
Initial cost of building and improvements 18,868      
Cost Capitalized Subsequent to Acquisition 400      
Carrying amount of land and land improvements 760      
Carrying amount of building and improvements 19,268      
Accumulated depreciation 4,808      
Carlisle, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 978      
Initial cost of building and improvements 8,204      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 978      
Carrying amount of building and improvements 8,204      
Accumulated depreciation 793      
Carmel, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,222      
Initial cost of building and improvements 31,004      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,222      
Carrying amount of building and improvements 31,004      
Accumulated depreciation 647      
Carmel, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,700      
Initial cost of building and improvements 19,491      
Cost Capitalized Subsequent to Acquisition 1      
Carrying amount of land and land improvements 1,700      
Carrying amount of building and improvements 19,492      
Accumulated depreciation 3,620      
Carrollton, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,010      
Initial cost of building and improvements 19,549      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,010      
Carrying amount of building and improvements 19,549      
Accumulated depreciation 2,784      
Cary, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,500      
Initial cost of building and improvements 4,350      
Cost Capitalized Subsequent to Acquisition 1,366      
Carrying amount of land and land improvements 1,500      
Carrying amount of building and improvements 5,716      
Accumulated depreciation 3,084      
Castleton, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 920      
Initial cost of building and improvements 15,137      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 920      
Carrying amount of building and improvements 15,137      
Accumulated depreciation 3,259      
Cedar Rapids, IA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 596      
Initial cost of building and improvements 9,354      
Cost Capitalized Subsequent to Acquisition 16      
Carrying amount of land and land improvements 614      
Carrying amount of building and improvements 9,352      
Accumulated depreciation 835      
Centerville, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 920      
Initial cost of building and improvements 3,958      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 920      
Carrying amount of building and improvements 3,958      
Accumulated depreciation 547      
Chagrin Falls, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 832      
Initial cost of building and improvements 10,837      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 832      
Carrying amount of building and improvements 10,837      
Accumulated depreciation 1,032      
Chambersburg, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,373      
Initial cost of building and improvements 8,862      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,373      
Carrying amount of building and improvements 8,862      
Accumulated depreciation 887      
Chapel Hill, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 354      
Initial cost of building and improvements 2,646      
Cost Capitalized Subsequent to Acquisition 1,617      
Carrying amount of land and land improvements 354      
Carrying amount of building and improvements 4,263      
Accumulated depreciation 1,747      
Charlottesville, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,542      
Initial cost of building and improvements 40,746      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,542      
Carrying amount of building and improvements 40,746      
Accumulated depreciation 0      
Chatham, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 320      
Initial cost of building and improvements 14,039      
Cost Capitalized Subsequent to Acquisition 69      
Carrying amount of land and land improvements 320      
Carrying amount of building and improvements 14,108      
Accumulated depreciation 2,968      
Chattanooga, TN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,085      
Initial cost of building and improvements 11,837      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,085      
Carrying amount of building and improvements 11,837      
Accumulated depreciation 554      
Cherry Hill, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,416      
Initial cost of building and improvements 9,871      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,416      
Carrying amount of building and improvements 9,871      
Accumulated depreciation 978      
Chester, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,320      
Initial cost of building and improvements 18,127      
Cost Capitalized Subsequent to Acquisition 147      
Carrying amount of land and land improvements 1,320      
Carrying amount of building and improvements 18,274      
Accumulated depreciation 3,792      
Chevy Chase, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,515      
Initial cost of building and improvements 8,685      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,515      
Carrying amount of building and improvements 8,685      
Accumulated depreciation 810      
Chickasha, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 85      
Initial cost of building and improvements 1,395      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 85      
Carrying amount of building and improvements 1,395      
Accumulated depreciation 929      
Chillicothe, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,145      
Initial cost of building and improvements 8,994      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,145      
Carrying amount of building and improvements 8,994      
Accumulated depreciation 833      
Cincinnati, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 912      
Initial cost of building and improvements 14,010      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 912      
Carrying amount of building and improvements 14,010      
Accumulated depreciation 1,318      
Citrus Heights, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,207      
Initial cost of building and improvements 31,715      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 5,207      
Carrying amount of building and improvements 31,715      
Accumulated depreciation 2,807      
Claremore, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 155      
Initial cost of building and improvements 1,427      
Cost Capitalized Subsequent to Acquisition 6,130      
Carrying amount of land and land improvements 155      
Carrying amount of building and improvements 7,557      
Accumulated depreciation 2,157      
Clarksville, TN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 330      
Initial cost of building and improvements 2,292      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 330      
Carrying amount of building and improvements 2,292      
Accumulated depreciation 1,376      
Clayton, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 520      
Initial cost of building and improvements 15,733      
Cost Capitalized Subsequent to Acquisition 72      
Carrying amount of land and land improvements 520      
Carrying amount of building and improvements 15,805      
Accumulated depreciation 3,069      
Clevedon, UKK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,838      
Initial cost of building and improvements 16,927      
Cost Capitalized Subsequent to Acquisition 1,863      
Carrying amount of land and land improvements 3,105      
Carrying amount of building and improvements 18,523      
Accumulated depreciation 3,578      
Clifton, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,881      
Initial cost of building and improvements 34,941      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,881      
Carrying amount of building and improvements 34,941      
Accumulated depreciation 935      
Cloquet, MN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 340      
Initial cost of building and improvements 4,660      
Cost Capitalized Subsequent to Acquisition 120      
Carrying amount of land and land improvements 340      
Carrying amount of building and improvements 4,780      
Accumulated depreciation 1,374      
Cobham, UKJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 9,808      
Initial cost of building and improvements 24,991      
Cost Capitalized Subsequent to Acquisition 3,275      
Carrying amount of land and land improvements 10,727      
Carrying amount of building and improvements 27,347      
Accumulated depreciation 6,015      
Colorado Springs, CO | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,280      
Initial cost of building and improvements 62,168      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,280      
Carrying amount of building and improvements 62,168      
Accumulated depreciation 10,121      
Colorado Springs, CO | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,730      
Initial cost of building and improvements 25,493      
Cost Capitalized Subsequent to Acquisition 693      
Carrying amount of land and land improvements 1,730      
Carrying amount of building and improvements 26,186      
Accumulated depreciation 4,336      
Columbia, TN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 341      
Initial cost of building and improvements 2,295      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 341      
Carrying amount of building and improvements 2,295      
Accumulated depreciation 1,377      
Columbia, SC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,699      
Initial cost of building and improvements 2,319      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,699      
Carrying amount of building and improvements 2,319      
Accumulated depreciation 240      
Columbia Heights, MN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 825      
Initial cost of building and improvements 14,175      
Cost Capitalized Subsequent to Acquisition 163      
Carrying amount of land and land improvements 825      
Carrying amount of building and improvements 14,338      
Accumulated depreciation 3,875      
Concord, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 550      
Initial cost of building and improvements 3,921      
Cost Capitalized Subsequent to Acquisition 683      
Carrying amount of land and land improvements 550      
Carrying amount of building and improvements 4,604      
Accumulated depreciation 2,048      
Congleton, UKD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,036      
Initial cost of building and improvements 5,120      
Cost Capitalized Subsequent to Acquisition 675      
Carrying amount of land and land improvements 2,228      
Carrying amount of building and improvements 5,603      
Accumulated depreciation 1,055      
Coppell, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,550      
Initial cost of building and improvements 8,386      
Cost Capitalized Subsequent to Acquisition 376      
Carrying amount of land and land improvements 1,550      
Carrying amount of building and improvements 8,762      
Accumulated depreciation 2,137      
Corby, UKF | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,228      
Initial cost of building and improvements 5,144      
Cost Capitalized Subsequent to Acquisition 794      
Carrying amount of land and land improvements 1,225      
Carrying amount of building and improvements 5,941      
Accumulated depreciation 751      
Costa Mesa, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,050      
Initial cost of building and improvements 19,969      
Cost Capitalized Subsequent to Acquisition 969      
Carrying amount of land and land improvements 2,050      
Carrying amount of building and improvements 20,938      
Accumulated depreciation 7,087      
Coventry, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,962      
Initial cost of building and improvements 13,830      
Cost Capitalized Subsequent to Acquisition 1,489      
Carrying amount of land and land improvements 2,147      
Carrying amount of building and improvements 15,134      
Accumulated depreciation 2,724      
Crawfordsville, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 720      
Initial cost of building and improvements 17,239      
Cost Capitalized Subsequent to Acquisition 1,426      
Carrying amount of land and land improvements 720      
Carrying amount of building and improvements 18,665      
Accumulated depreciation 3,894      
Dallastown, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,377      
Initial cost of building and improvements 16,797      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,377      
Carrying amount of building and improvements 16,797      
Accumulated depreciation 1,582      
Danville, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 410      
Initial cost of building and improvements 3,954      
Cost Capitalized Subsequent to Acquisition 1,073      
Carrying amount of land and land improvements 410      
Carrying amount of building and improvements 5,027      
Accumulated depreciation 2,291      
Danville, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 240      
Initial cost of building and improvements 8,436      
Cost Capitalized Subsequent to Acquisition 653      
Carrying amount of land and land improvements 240      
Carrying amount of building and improvements 9,089      
Accumulated depreciation 1,801      
Daphne, AL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,880      
Initial cost of building and improvements 8,670      
Cost Capitalized Subsequent to Acquisition 384      
Carrying amount of land and land improvements 2,880      
Carrying amount of building and improvements 9,054      
Accumulated depreciation 2,402      
Davenport, IA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 566      
Initial cost of building and improvements 2,017      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 566      
Carrying amount of building and improvements 2,017      
Accumulated depreciation 195      
Davenport, IA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 910      
Initial cost of building and improvements 20,038      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 910      
Carrying amount of building and improvements 20,038      
Accumulated depreciation 1,835      
Dayton, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,188      
Initial cost of building and improvements 5,412      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,188      
Carrying amount of building and improvements 5,412      
Accumulated depreciation 544      
Dearborn Heights, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,197      
Initial cost of building and improvements 3,394      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,197      
Carrying amount of building and improvements 3,394      
Accumulated depreciation 375      
Decatur, GA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,413      
Initial cost of building and improvements 13,796      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,413      
Carrying amount of building and improvements 13,796      
Accumulated depreciation 1,209      
Delray Beach, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,158      
Initial cost of building and improvements 13,572      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,158      
Carrying amount of building and improvements 13,572      
Accumulated depreciation 1,286      
Delray Beach, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,125      
Initial cost of building and improvements 11,840      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,125      
Carrying amount of building and improvements 11,840      
Accumulated depreciation 1,154      
Denton, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,760      
Initial cost of building and improvements 8,305      
Cost Capitalized Subsequent to Acquisition 412      
Carrying amount of land and land improvements 1,760      
Carrying amount of building and improvements 8,717      
Accumulated depreciation 2,584      
Denver, CO | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,222      
Initial cost of building and improvements 24,804      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,222      
Carrying amount of building and improvements 24,804      
Accumulated depreciation 2,183      
Derby, UKF | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,359      
Initial cost of building and improvements 8,539      
Cost Capitalized Subsequent to Acquisition 638      
Carrying amount of land and land improvements 2,498      
Carrying amount of building and improvements 9,038      
Accumulated depreciation 1,431      
Dowagiac, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 825      
Initial cost of building and improvements 1,778      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 825      
Carrying amount of building and improvements 1,778      
Accumulated depreciation 149      
Droitwich, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 16,185      
Carrying amount of land and land improvements 3,848      
Carrying amount of building and improvements 12,337      
Accumulated depreciation 372      
Dublin, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,393      
Initial cost of building and improvements 2,911      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,393      
Carrying amount of building and improvements 2,911      
Accumulated depreciation 334      
Dubuque, IA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 568      
Initial cost of building and improvements 8,902      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 568      
Carrying amount of building and improvements 8,902      
Accumulated depreciation 796      
Dunedin, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,883      
Initial cost of building and improvements 13,325      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,883      
Carrying amount of building and improvements 13,325      
Accumulated depreciation 1,199      
Durham, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,476      
Initial cost of building and improvements 10,659      
Cost Capitalized Subsequent to Acquisition 3,168      
Carrying amount of land and land improvements 1,476      
Carrying amount of building and improvements 13,827      
Accumulated depreciation 12,675      
Eagan, MN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 15,580      
Initial cost of land and land improvements 2,260      
Initial cost of building and improvements 31,643      
Cost Capitalized Subsequent to Acquisition 300      
Carrying amount of land and land improvements 2,260      
Carrying amount of building and improvements 31,943      
Accumulated depreciation 5,222      
East Brunswick, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,380      
Initial cost of building and improvements 34,229      
Cost Capitalized Subsequent to Acquisition 1,093      
Carrying amount of land and land improvements 1,380      
Carrying amount of building and improvements 35,322      
Accumulated depreciation 9,607      
Eastbourne, UKJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,071      
Initial cost of building and improvements 24,438      
Cost Capitalized Subsequent to Acquisition 2,688      
Carrying amount of land and land improvements 4,455      
Carrying amount of building and improvements 26,742      
Accumulated depreciation 5,100      
Easton, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,109      
Initial cost of building and improvements 7,500      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,109      
Carrying amount of building and improvements 7,500      
Accumulated depreciation 919      
Easton, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,430      
Initial cost of building and improvements 13,396      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,430      
Carrying amount of building and improvements 13,396      
Accumulated depreciation 1,268      
Easton, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,620      
Initial cost of building and improvements 10,049      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,620      
Carrying amount of building and improvements 10,049      
Accumulated depreciation 1,123      
Eden, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 390      
Initial cost of building and improvements 4,877      
Cost Capitalized Subsequent to Acquisition 141      
Carrying amount of land and land improvements 390      
Carrying amount of building and improvements 5,018      
Accumulated depreciation 2,392      
Edmond, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,810      
Initial cost of building and improvements 14,849      
Cost Capitalized Subsequent to Acquisition 3,260      
Carrying amount of land and land improvements 1,810      
Carrying amount of building and improvements 18,109      
Accumulated depreciation 3,437      
Edmond, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,650      
Initial cost of building and improvements 25,167      
Cost Capitalized Subsequent to Acquisition 1,700      
Carrying amount of land and land improvements 1,650      
Carrying amount of building and improvements 26,867      
Accumulated depreciation 3,545      
Edmond, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 410      
Initial cost of building and improvements 8,388      
Cost Capitalized Subsequent to Acquisition 226      
Carrying amount of land and land improvements 410      
Carrying amount of building and improvements 8,614      
Accumulated depreciation 2,214      
Elizabeth City, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 200      
Initial cost of building and improvements 2,760      
Cost Capitalized Subsequent to Acquisition 2,837      
Carrying amount of land and land improvements 200      
Carrying amount of building and improvements 5,597      
Accumulated depreciation 2,599      
Elk Grove Village, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,344      
Initial cost of building and improvements 7,073      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,344      
Carrying amount of building and improvements 7,073      
Accumulated depreciation 700      
Elk Grove Village, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,733      
Initial cost of building and improvements 18,745      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,733      
Carrying amount of building and improvements 18,745      
Accumulated depreciation 1,642      
Encinitas, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,460      
Initial cost of building and improvements 7,721      
Cost Capitalized Subsequent to Acquisition 1,987      
Carrying amount of land and land improvements 1,460      
Carrying amount of building and improvements 9,708      
Accumulated depreciation 5,117      
Escondido, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,520      
Initial cost of building and improvements 24,024      
Cost Capitalized Subsequent to Acquisition 785      
Carrying amount of land and land improvements 1,520      
Carrying amount of building and improvements 24,809      
Accumulated depreciation 8,286      
Eureka, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 50      
Initial cost of building and improvements 3,950      
Cost Capitalized Subsequent to Acquisition 71      
Carrying amount of land and land improvements 50      
Carrying amount of building and improvements 4,021      
Accumulated depreciation 682      
Everett, WA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,400      
Initial cost of building and improvements 5,476      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,400      
Carrying amount of building and improvements 5,476      
Accumulated depreciation 3,210      
Exton, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,600      
Initial cost of building and improvements 27,267      
Cost Capitalized Subsequent to Acquisition 342      
Carrying amount of land and land improvements 3,600      
Carrying amount of building and improvements 27,609      
Accumulated depreciation 3,009      
Fairfax, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,827      
Initial cost of building and improvements 17,304      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,827      
Carrying amount of building and improvements 17,304      
Accumulated depreciation 1,652      
Fairfax, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,099      
Initial cost of building and improvements 17,614      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,099      
Carrying amount of building and improvements 17,614      
Accumulated depreciation 1,645      
Fairhope, AL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 570      
Initial cost of building and improvements 9,119      
Cost Capitalized Subsequent to Acquisition 112      
Carrying amount of land and land improvements 570      
Carrying amount of building and improvements 9,231      
Accumulated depreciation 2,418      
Fall River, MA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 620      
Initial cost of building and improvements 5,829      
Cost Capitalized Subsequent to Acquisition 4,856      
Carrying amount of land and land improvements 620      
Carrying amount of building and improvements 10,685      
Accumulated depreciation 6,218      
Fanwood, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,850      
Initial cost of building and improvements 55,175      
Cost Capitalized Subsequent to Acquisition 1,467      
Carrying amount of land and land improvements 2,850      
Carrying amount of building and improvements 56,642      
Accumulated depreciation 15,165      
Faribault, MN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 780      
Initial cost of building and improvements 11,539      
Cost Capitalized Subsequent to Acquisition 300      
Carrying amount of land and land improvements 780      
Carrying amount of building and improvements 11,839      
Accumulated depreciation 1,887      
Farmington, CT | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,693      
Initial cost of building and improvements 10,455      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,693      
Carrying amount of building and improvements 10,455      
Accumulated depreciation 1,018      
Farnborough, UKJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,036      
Initial cost of building and improvements 5,737      
Cost Capitalized Subsequent to Acquisition 733      
Carrying amount of land and land improvements 2,228      
Carrying amount of building and improvements 6,278      
Accumulated depreciation 1,149      
Fayetteville, NY | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 410      
Initial cost of building and improvements 3,962      
Cost Capitalized Subsequent to Acquisition 500      
Carrying amount of land and land improvements 410      
Carrying amount of building and improvements 4,462      
Accumulated depreciation 2,293      
Fayetteville, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,150      
Initial cost of building and improvements 20,221      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,150      
Carrying amount of building and improvements 20,221      
Accumulated depreciation 5,122      
Findlay, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 200      
Initial cost of building and improvements 1,800      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 200      
Carrying amount of building and improvements 1,800      
Accumulated depreciation 1,147      
Fishers, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,500      
Initial cost of building and improvements 14,500      
Cost Capitalized Subsequent to Acquisition 1,001      
Carrying amount of land and land improvements 1,500      
Carrying amount of building and improvements 15,501      
Accumulated depreciation 4,766      
Fishers, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,314      
Initial cost of building and improvements 33,731      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,314      
Carrying amount of building and improvements 33,731      
Accumulated depreciation 705      
Fishersville, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 788      
Initial cost of building and improvements 2,101      
Cost Capitalized Subsequent to Acquisition 3      
Carrying amount of land and land improvements 788      
Carrying amount of building and improvements 2,104      
Accumulated depreciation 1,143      
Flint, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,271      
Initial cost of building and improvements 18,050      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,271      
Carrying amount of building and improvements 18,050      
Accumulated depreciation 1,601      
Florence, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 300      
Initial cost of building and improvements 2,978      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 300      
Carrying amount of building and improvements 2,978      
Accumulated depreciation 1,545      
Flower Mound, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,800      
Initial cost of building and improvements 8,414      
Cost Capitalized Subsequent to Acquisition 375      
Carrying amount of land and land improvements 1,800      
Carrying amount of building and improvements 8,789      
Accumulated depreciation 2,331      
Floyd, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 680      
Initial cost of building and improvements 3,618      
Cost Capitalized Subsequent to Acquisition 4      
Carrying amount of land and land improvements 680      
Carrying amount of building and improvements 3,622      
Accumulated depreciation 894      
Forest City, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 320      
Initial cost of building and improvements 4,497      
Cost Capitalized Subsequent to Acquisition 226      
Carrying amount of land and land improvements 320      
Carrying amount of building and improvements 4,723      
Accumulated depreciation 2,218      
Fort Collins, CO | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,680      
Initial cost of building and improvements 58,608      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,680      
Carrying amount of building and improvements 58,608      
Accumulated depreciation 9,511      
Fort Wayne, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,770      
Initial cost of building and improvements 19,930      
Cost Capitalized Subsequent to Acquisition 1,652      
Carrying amount of land and land improvements 1,770      
Carrying amount of building and improvements 21,582      
Accumulated depreciation 6,308      
Fort Worth, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 450      
Initial cost of building and improvements 13,615      
Cost Capitalized Subsequent to Acquisition 5,086      
Carrying amount of land and land improvements 450      
Carrying amount of building and improvements 18,701      
Accumulated depreciation 6,010      
Fort Worth, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,781      
Initial cost of building and improvements 23,053      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,781      
Carrying amount of building and improvements 23,053      
Accumulated depreciation 0      
Fredericksburg, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,000      
Initial cost of building and improvements 20,000      
Cost Capitalized Subsequent to Acquisition 2,161      
Carrying amount of land and land improvements 1,000      
Carrying amount of building and improvements 22,161      
Accumulated depreciation 8,991      
Fredericksburg, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,130      
Initial cost of building and improvements 23,202      
Cost Capitalized Subsequent to Acquisition 182      
Carrying amount of land and land improvements 1,130      
Carrying amount of building and improvements 23,384      
Accumulated depreciation 4,681      
Ft. Myers, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,110      
Initial cost of building and improvements 10,559      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,110      
Carrying amount of building and improvements 10,559      
Accumulated depreciation 1,011      
Ft. Myers, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,139      
Initial cost of building and improvements 18,235      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,139      
Carrying amount of building and improvements 18,235      
Accumulated depreciation 1,708      
Ft. Myers, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,502      
Initial cost of building and improvements 9,741      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,502      
Carrying amount of building and improvements 9,741      
Accumulated depreciation 1,104      
Gahanna, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,432      
Initial cost of building and improvements 34,645      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,432      
Carrying amount of building and improvements 34,645      
Accumulated depreciation 375      
Gainesville, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 972      
Initial cost of building and improvements 8,809      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 972      
Carrying amount of building and improvements 8,809      
Accumulated depreciation 299      
Gainesville, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 31,503      
Carrying amount of land and land improvements 2,374      
Carrying amount of building and improvements 29,129      
Accumulated depreciation 1,853      
Galesburg, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,708      
Initial cost of building and improvements 3,839      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,708      
Carrying amount of building and improvements 3,839      
Accumulated depreciation 364      
Gardner, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 200      
Initial cost of building and improvements 2,800      
Cost Capitalized Subsequent to Acquisition 93      
Carrying amount of land and land improvements 200      
Carrying amount of building and improvements 2,893      
Accumulated depreciation 520      
Gastonia, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 470      
Initial cost of building and improvements 6,129      
Cost Capitalized Subsequent to Acquisition 77      
Carrying amount of land and land improvements 470      
Carrying amount of building and improvements 6,206      
Accumulated depreciation 2,971      
Gastonia, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 310      
Initial cost of building and improvements 3,096      
Cost Capitalized Subsequent to Acquisition 113      
Carrying amount of land and land improvements 310      
Carrying amount of building and improvements 3,209      
Accumulated depreciation 1,568      
Gastonia, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 400      
Initial cost of building and improvements 5,029      
Cost Capitalized Subsequent to Acquisition 807      
Carrying amount of land and land improvements 400      
Carrying amount of building and improvements 5,836      
Accumulated depreciation 2,506      
Geneva, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,502      
Initial cost of building and improvements 16,193      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,502      
Carrying amount of building and improvements 16,193      
Accumulated depreciation 1,511      
Georgetown, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 200      
Initial cost of building and improvements 2,100      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 200      
Carrying amount of building and improvements 2,100      
Accumulated depreciation 1,328      
Glen Ellyn, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,496      
Initial cost of building and improvements 6,634      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,496      
Carrying amount of building and improvements 6,634      
Accumulated depreciation 689      
Granbury, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,550      
Initial cost of building and improvements 2,940      
Cost Capitalized Subsequent to Acquisition 777      
Carrying amount of land and land improvements 2,550      
Carrying amount of building and improvements 3,717      
Accumulated depreciation 1,155      
Granger, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,670      
Initial cost of building and improvements 21,280      
Cost Capitalized Subsequent to Acquisition 2,455      
Carrying amount of land and land improvements 1,670      
Carrying amount of building and improvements 23,735      
Accumulated depreciation 6,867      
Grapevine, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,220      
Initial cost of building and improvements 17,648      
Cost Capitalized Subsequent to Acquisition 261      
Carrying amount of land and land improvements 2,220      
Carrying amount of building and improvements 17,909      
Accumulated depreciation 2,902      
Greeley, CO | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,077      
Initial cost of building and improvements 18,051      
Cost Capitalized Subsequent to Acquisition 310      
Carrying amount of land and land improvements 1,077      
Carrying amount of building and improvements 18,361      
Accumulated depreciation 2,413      
Greensboro, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 330      
Initial cost of building and improvements 2,970      
Cost Capitalized Subsequent to Acquisition 662      
Carrying amount of land and land improvements 330      
Carrying amount of building and improvements 3,632      
Accumulated depreciation 1,750      
Greensboro, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 560      
Initial cost of building and improvements 5,507      
Cost Capitalized Subsequent to Acquisition 1,813      
Carrying amount of land and land improvements 560      
Carrying amount of building and improvements 7,320      
Accumulated depreciation 3,224      
Greenville, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 290      
Initial cost of building and improvements 4,393      
Cost Capitalized Subsequent to Acquisition 353      
Carrying amount of land and land improvements 290      
Carrying amount of building and improvements 4,746      
Accumulated depreciation 2,205      
Greenville, SC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 310      
Initial cost of building and improvements 4,750      
Cost Capitalized Subsequent to Acquisition 394      
Carrying amount of land and land improvements 310      
Carrying amount of building and improvements 5,144      
Accumulated depreciation 2,253      
Greenville, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,490      
Initial cost of building and improvements 4,341      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,490      
Carrying amount of building and improvements 4,341      
Accumulated depreciation 285      
Greenville, SC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,751      
Initial cost of building and improvements 8,771      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,751      
Carrying amount of building and improvements 8,771      
Accumulated depreciation 840      
Greenville, SC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 947      
Initial cost of building and improvements 1,445      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 947      
Carrying amount of building and improvements 1,445      
Accumulated depreciation 232      
Greenwood, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,550      
Initial cost of building and improvements 22,770      
Cost Capitalized Subsequent to Acquisition 166      
Carrying amount of land and land improvements 1,550      
Carrying amount of building and improvements 22,936      
Accumulated depreciation 6,726      
Grosse Pointe, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 867      
Initial cost of building and improvements 2,385      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 867      
Carrying amount of building and improvements 2,385      
Accumulated depreciation 240      
Hamilton, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 440      
Initial cost of building and improvements 4,469      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 440      
Carrying amount of building and improvements 4,469      
Accumulated depreciation 2,313      
Hanford, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,382      
Initial cost of building and improvements 9,829      
Cost Capitalized Subsequent to Acquisition 1,056      
Carrying amount of land and land improvements 1,512      
Carrying amount of building and improvements 10,755      
Accumulated depreciation 2,390      
Harahan, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,628      
Initial cost of building and improvements 38,864      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,628      
Carrying amount of building and improvements 38,864      
Accumulated depreciation 0      
Harrisburg, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 569      
Initial cost of building and improvements 12,822      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 569      
Carrying amount of building and improvements 12,822      
Accumulated depreciation 1,191      
Harrow, UKI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,402      
Initial cost of building and improvements 8,266      
Cost Capitalized Subsequent to Acquisition 1,477      
Carrying amount of land and land improvements 8,100      
Carrying amount of building and improvements 9,045      
Accumulated depreciation 1,769      
Hastings, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,603      
Initial cost of building and improvements 6,519      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,603      
Carrying amount of building and improvements 6,519      
Accumulated depreciation 358      
Hatboro, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 28,112      
Cost Capitalized Subsequent to Acquisition 1,771      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 29,883      
Accumulated depreciation 8,489      
Hatboro, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,192      
Initial cost of building and improvements 7,608      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,192      
Carrying amount of building and improvements 7,608      
Accumulated depreciation 964      
Hatfield, UKH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,924      
Initial cost of building and improvements 7,527      
Cost Capitalized Subsequent to Acquisition 985      
Carrying amount of land and land improvements 3,200      
Carrying amount of building and improvements 8,236      
Accumulated depreciation 1,844      
Hattiesburg, MS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 450      
Initial cost of building and improvements 13,469      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 450      
Carrying amount of building and improvements 13,469      
Accumulated depreciation 3,834      
Haverhill, MA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,519      
Initial cost of building and improvements 19,554      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 5,519      
Carrying amount of building and improvements 19,554      
Accumulated depreciation 0      
Hermitage, TN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,500      
Initial cost of building and improvements 9,943      
Cost Capitalized Subsequent to Acquisition 540      
Carrying amount of land and land improvements 1,500      
Carrying amount of building and improvements 10,483      
Accumulated depreciation 2,742      
Herne Bay, UKJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,900      
Initial cost of building and improvements 24,353      
Cost Capitalized Subsequent to Acquisition 3,231      
Carrying amount of land and land improvements 2,079      
Carrying amount of building and improvements 27,405      
Accumulated depreciation 6,451      
Hiawatha, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 40      
Initial cost of building and improvements 4,210      
Cost Capitalized Subsequent to Acquisition 29      
Carrying amount of land and land improvements 40      
Carrying amount of building and improvements 4,239      
Accumulated depreciation 743      
Hickory, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 290      
Initial cost of building and improvements 987      
Cost Capitalized Subsequent to Acquisition 392      
Carrying amount of land and land improvements 290      
Carrying amount of building and improvements 1,379      
Accumulated depreciation 719      
High Point, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 560      
Initial cost of building and improvements 4,443      
Cost Capitalized Subsequent to Acquisition 1,406      
Carrying amount of land and land improvements 560      
Carrying amount of building and improvements 5,849      
Accumulated depreciation 2,572      
High Point, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 370      
Initial cost of building and improvements 2,185      
Cost Capitalized Subsequent to Acquisition 994      
Carrying amount of land and land improvements 370      
Carrying amount of building and improvements 3,179      
Accumulated depreciation 1,324      
High Point, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 330      
Initial cost of building and improvements 3,395      
Cost Capitalized Subsequent to Acquisition 142      
Carrying amount of land and land improvements 330      
Carrying amount of building and improvements 3,537      
Accumulated depreciation 1,689      
High Point, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 430      
Initial cost of building and improvements 4,143      
Cost Capitalized Subsequent to Acquisition 1,001      
Carrying amount of land and land improvements 430      
Carrying amount of building and improvements 5,144      
Accumulated depreciation 2,034      
Highlands Ranch, CO | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 940      
Initial cost of building and improvements 3,721      
Cost Capitalized Subsequent to Acquisition 4,983      
Carrying amount of land and land improvements 940      
Carrying amount of building and improvements 8,704      
Accumulated depreciation 2,941      
Hillsboro, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,792      
Initial cost of building and improvements 6,339      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,792      
Carrying amount of building and improvements 6,339      
Accumulated depreciation 830      
Hinckley, UKF | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,159      
Initial cost of building and improvements 4,194      
Cost Capitalized Subsequent to Acquisition 599      
Carrying amount of land and land improvements 2,363      
Carrying amount of building and improvements 4,589      
Accumulated depreciation 1,125      
Hinsdale, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,033      
Initial cost of building and improvements 24,280      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,033      
Carrying amount of building and improvements 24,280      
Accumulated depreciation 2,141      
Holton, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 40      
Initial cost of building and improvements 7,460      
Cost Capitalized Subsequent to Acquisition 13      
Carrying amount of land and land improvements 40      
Carrying amount of building and improvements 7,473      
Accumulated depreciation 1,222      
Homewood, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,395      
Initial cost of building and improvements 7,649      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,395      
Carrying amount of building and improvements 7,649      
Accumulated depreciation 690      
Howard, WI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 579      
Initial cost of building and improvements 32,122      
Cost Capitalized Subsequent to Acquisition 5,943      
Carrying amount of land and land improvements 684      
Carrying amount of building and improvements 37,960      
Accumulated depreciation 4,653      
Huntingdon Valley, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,150      
Initial cost of building and improvements 3,728      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,150      
Carrying amount of building and improvements 3,728      
Accumulated depreciation 501      
Huntsville, AL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,382      
Initial cost of building and improvements 14,286      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,382      
Carrying amount of building and improvements 14,286      
Accumulated depreciation 437      
Hutchinson, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 600      
Initial cost of building and improvements 10,590      
Cost Capitalized Subsequent to Acquisition 774      
Carrying amount of land and land improvements 600      
Carrying amount of building and improvements 11,364      
Accumulated depreciation 4,843      
Independence, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,082      
Initial cost of building and improvements 6,767      
Cost Capitalized Subsequent to Acquisition 7      
Carrying amount of land and land improvements 1,082      
Carrying amount of building and improvements 6,774      
Accumulated depreciation 1,612      
Indianapolis, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 870      
Initial cost of building and improvements 14,688      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 870      
Carrying amount of building and improvements 14,688      
Accumulated depreciation 3,175      
Jackson, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,500      
Initial cost of building and improvements 26,405      
Cost Capitalized Subsequent to Acquisition 4,240      
Carrying amount of land and land improvements 6,500      
Carrying amount of building and improvements 30,645      
Accumulated depreciation 6,848      
Jacksonville, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,932      
Initial cost of building and improvements 14,269      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,932      
Carrying amount of building and improvements 14,269      
Accumulated depreciation 465      
Jacksonville, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 750      
Initial cost of building and improvements 25,231      
Cost Capitalized Subsequent to Acquisition 163      
Carrying amount of land and land improvements 750      
Carrying amount of building and improvements 25,394      
Accumulated depreciation 3,623      
Jacksonville, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 26,381      
Cost Capitalized Subsequent to Acquisition 1,911      
Carrying amount of land and land improvements 1,691      
Carrying amount of building and improvements 26,601      
Accumulated depreciation 3,782      
Jefferson Hills, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,265      
Initial cost of building and improvements 13,614      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,265      
Carrying amount of building and improvements 13,614      
Accumulated depreciation 1,847      
Jersey Shore, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 600      
Initial cost of building and improvements 8,104      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 600      
Carrying amount of building and improvements 8,104      
Accumulated depreciation 704      
Kansas City, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 700      
Initial cost of building and improvements 20,115      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 700      
Carrying amount of building and improvements 20,115      
Accumulated depreciation 3,458      
Katy, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,778      
Initial cost of building and improvements 22,622      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,778      
Carrying amount of building and improvements 22,622      
Accumulated depreciation 3,026      
Kensington, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,753      
Initial cost of building and improvements 18,621      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,753      
Carrying amount of building and improvements 18,621      
Accumulated depreciation 1,674      
Kenwood, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 821      
Initial cost of building and improvements 11,040      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 821      
Carrying amount of building and improvements 11,040      
Accumulated depreciation 1,026      
Kettering, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,229      
Initial cost of building and improvements 4,701      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,229      
Carrying amount of building and improvements 4,701      
Accumulated depreciation 497      
King of Prussia, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 720      
Initial cost of building and improvements 14,776      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 720      
Carrying amount of building and improvements 14,776      
Accumulated depreciation 1,423      
King of Prussia, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,205      
Initial cost of building and improvements 4,725      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,205      
Carrying amount of building and improvements 4,725      
Accumulated depreciation 538      
Kingsford, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,362      
Initial cost of building and improvements 10,594      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,362      
Carrying amount of building and improvements 10,594      
Accumulated depreciation 1,025      
Kingsport, TN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,123      
Initial cost of building and improvements 33,130      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,123      
Carrying amount of building and improvements 33,130      
Accumulated depreciation 0      
Kirkstall, UKE | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,437      
Initial cost of building and improvements 9,414      
Cost Capitalized Subsequent to Acquisition 1,117      
Carrying amount of land and land improvements 2,666      
Carrying amount of building and improvements 10,302      
Accumulated depreciation 2,295      
Knoxville, TN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,207      
Initial cost of building and improvements 12,849      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,207      
Carrying amount of building and improvements 12,849      
Accumulated depreciation 606      
Kokomo, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 710      
Initial cost of building and improvements 16,044      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 710      
Carrying amount of building and improvements 16,044      
Accumulated depreciation 3,461      
Lacey, WA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,582      
Initial cost of building and improvements 18,175      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,582      
Carrying amount of building and improvements 18,175      
Accumulated depreciation 1,657      
Lafayette, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 670      
Initial cost of building and improvements 16,833      
Cost Capitalized Subsequent to Acquisition 1      
Carrying amount of land and land improvements 670      
Carrying amount of building and improvements 16,834      
Accumulated depreciation 3,364      
Lafayette, CO | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,420      
Initial cost of building and improvements 20,192      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,420      
Carrying amount of building and improvements 20,192      
Accumulated depreciation 3,714      
Lakeway, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,142      
Initial cost of building and improvements 23,203      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 5,142      
Carrying amount of building and improvements 23,203      
Accumulated depreciation 5,439      
Lakewood, CO | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,160      
Initial cost of building and improvements 28,091      
Cost Capitalized Subsequent to Acquisition 62      
Carrying amount of land and land improvements 2,160      
Carrying amount of building and improvements 28,153      
Accumulated depreciation 5,775      
Lakewood Ranch, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 650      
Initial cost of building and improvements 6,714      
Cost Capitalized Subsequent to Acquisition 2,010      
Carrying amount of land and land improvements 650      
Carrying amount of building and improvements 8,724      
Accumulated depreciation 2,153      
Lakewood Ranch, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,000      
Initial cost of building and improvements 22,388      
Cost Capitalized Subsequent to Acquisition 314      
Carrying amount of land and land improvements 1,000      
Carrying amount of building and improvements 22,702      
Accumulated depreciation 5,594      
Lancaster, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,680      
Initial cost of building and improvements 14,039      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,680      
Carrying amount of building and improvements 14,039      
Accumulated depreciation 1,954      
Lancaster, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,011      
Initial cost of building and improvements 7,502      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,011      
Carrying amount of building and improvements 7,502      
Accumulated depreciation 708      
Lapeer, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,827      
Initial cost of building and improvements 8,794      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,827      
Carrying amount of building and improvements 8,794      
Accumulated depreciation 453      
Largo, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,166      
Initial cost of building and improvements 3,426      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,166      
Carrying amount of building and improvements 3,426      
Accumulated depreciation 418      
Laureldale, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,171      
Initial cost of building and improvements 14,420      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,171      
Carrying amount of building and improvements 14,420      
Accumulated depreciation 1,314      
Lawrence, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 250      
Initial cost of building and improvements 8,716      
Cost Capitalized Subsequent to Acquisition 64      
Carrying amount of land and land improvements 250      
Carrying amount of building and improvements 8,780      
Accumulated depreciation 2,150      
Lebanon, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 728      
Initial cost of building and improvements 10,367      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 728      
Carrying amount of building and improvements 10,367      
Accumulated depreciation 1,035      
Lebanon, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,214      
Initial cost of building and improvements 5,960      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,214      
Carrying amount of building and improvements 5,960      
Accumulated depreciation 667      
Lee, MA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 290      
Initial cost of building and improvements 18,135      
Cost Capitalized Subsequent to Acquisition 926      
Carrying amount of land and land improvements 290      
Carrying amount of building and improvements 19,061      
Accumulated depreciation 9,773      
Leeds, UK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,974      
Initial cost of building and improvements 13,239      
Cost Capitalized Subsequent to Acquisition 1,434      
Carrying amount of land and land improvements 2,160      
Carrying amount of building and improvements 14,487      
Accumulated depreciation 2,511      
Leicester, UKF | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,060      
Initial cost of building and improvements 24,410      
Cost Capitalized Subsequent to Acquisition 2,589      
Carrying amount of land and land improvements 3,348      
Carrying amount of building and improvements 26,711      
Accumulated depreciation 6,276      
Lenoir, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 190      
Initial cost of building and improvements 3,748      
Cost Capitalized Subsequent to Acquisition 920      
Carrying amount of land and land improvements 190      
Carrying amount of building and improvements 4,668      
Accumulated depreciation 2,150      
Lethbridge, AB | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,214      
Initial cost of building and improvements 2,750      
Cost Capitalized Subsequent to Acquisition 340      
Carrying amount of land and land improvements 1,315      
Carrying amount of building and improvements 2,989      
Accumulated depreciation 771      
Lexana, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 480      
Initial cost of building and improvements 1,770      
Cost Capitalized Subsequent to Acquisition 152      
Carrying amount of land and land improvements 480      
Carrying amount of building and improvements 1,922      
Accumulated depreciation 375      
Lexington, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 200      
Initial cost of building and improvements 3,900      
Cost Capitalized Subsequent to Acquisition 1,153      
Carrying amount of land and land improvements 200      
Carrying amount of building and improvements 5,053      
Accumulated depreciation 2,475      
Libertyville, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,500      
Initial cost of building and improvements 40,024      
Cost Capitalized Subsequent to Acquisition 2,612      
Carrying amount of land and land improvements 6,500      
Carrying amount of building and improvements 42,636      
Accumulated depreciation 11,807      
Libertyville, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,993      
Initial cost of building and improvements 11,546      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,993      
Carrying amount of building and improvements 11,546      
Accumulated depreciation 1,033      
Lichfield, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,382      
Initial cost of building and improvements 30,324      
Cost Capitalized Subsequent to Acquisition 2,989      
Carrying amount of land and land improvements 1,512      
Carrying amount of building and improvements 33,183      
Accumulated depreciation 5,751      
Lillington, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 500      
Initial cost of building and improvements 16,451      
Cost Capitalized Subsequent to Acquisition 184      
Carrying amount of land and land improvements 500      
Carrying amount of building and improvements 16,635      
Accumulated depreciation 3,211      
Lillington, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 470      
Initial cost of building and improvements 17,579      
Cost Capitalized Subsequent to Acquisition 600      
Carrying amount of land and land improvements 470      
Carrying amount of building and improvements 18,179      
Accumulated depreciation 3,654      
Lititz, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,200      
Initial cost of building and improvements 13,836      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,200      
Carrying amount of building and improvements 13,836      
Accumulated depreciation 1,929      
Livermore, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,100      
Initial cost of building and improvements 24,996      
Cost Capitalized Subsequent to Acquisition 79      
Carrying amount of land and land improvements 4,100      
Carrying amount of building and improvements 25,075      
Accumulated depreciation 4,544      
Livonia, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 985      
Initial cost of building and improvements 13,555      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 985      
Carrying amount of building and improvements 13,555      
Accumulated depreciation 1,304      
Longwood, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,260      
Initial cost of building and improvements 6,445      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,260      
Carrying amount of building and improvements 6,445      
Accumulated depreciation 1,932      
Los Angeles, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 11,430      
Cost Capitalized Subsequent to Acquisition 1,058      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 12,488      
Accumulated depreciation 4,196      
Louisburg, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 280      
Initial cost of building and improvements 4,320      
Cost Capitalized Subsequent to Acquisition 44      
Carrying amount of land and land improvements 280      
Carrying amount of building and improvements 4,364      
Accumulated depreciation 721      
Loxley, UKE | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,369      
Initial cost of building and improvements 15,668      
Cost Capitalized Subsequent to Acquisition 2,404      
Carrying amount of land and land improvements 1,499      
Carrying amount of building and improvements 17,942      
Accumulated depreciation 3,965      
Lutherville, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,100      
Initial cost of building and improvements 19,786      
Cost Capitalized Subsequent to Acquisition 1,744      
Carrying amount of land and land improvements 1,100      
Carrying amount of building and improvements 21,530      
Accumulated depreciation 6,259      
Lynchburg, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 340      
Initial cost of building and improvements 16,114      
Cost Capitalized Subsequent to Acquisition 66      
Carrying amount of land and land improvements 340      
Carrying amount of building and improvements 16,180      
Accumulated depreciation 3,403      
Lynchburg, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,904      
Initial cost of building and improvements 3,696      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,904      
Carrying amount of building and improvements 3,696      
Accumulated depreciation 345      
Lynnwood, WA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,302      
Initial cost of building and improvements 5,632      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,302      
Carrying amount of building and improvements 5,632      
Accumulated depreciation 533      
Macungie, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 27,041      
Carrying amount of land and land improvements 2,558      
Carrying amount of building and improvements 24,483      
Accumulated depreciation 0      
Manalapan, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 900      
Initial cost of building and improvements 22,624      
Cost Capitalized Subsequent to Acquisition 760      
Carrying amount of land and land improvements 900      
Carrying amount of building and improvements 23,384      
Accumulated depreciation 6,395      
Manassas, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 750      
Initial cost of building and improvements 7,446      
Cost Capitalized Subsequent to Acquisition 1,103      
Carrying amount of land and land improvements 750      
Carrying amount of building and improvements 8,549      
Accumulated depreciation 3,691      
Mankato, MN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,460      
Initial cost of building and improvements 32,104      
Cost Capitalized Subsequent to Acquisition 300      
Carrying amount of land and land improvements 1,460      
Carrying amount of building and improvements 32,404      
Accumulated depreciation 5,119      
Mansfield, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 21,163      
Carrying amount of land and land improvements 2,807      
Carrying amount of building and improvements 18,356      
Accumulated depreciation 0      
Marietta, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,050      
Initial cost of building and improvements 13,633      
Cost Capitalized Subsequent to Acquisition 562      
Carrying amount of land and land improvements 1,050      
Carrying amount of building and improvements 14,195      
Accumulated depreciation 2,302      
Marietta, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,149      
Initial cost of building and improvements 9,373      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,149      
Carrying amount of building and improvements 9,373      
Accumulated depreciation 867      
Marietta, GA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,406      
Initial cost of building and improvements 12,229      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,406      
Carrying amount of building and improvements 12,229      
Accumulated depreciation 1,106      
Marion, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 720      
Initial cost of building and improvements 9,604      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 720      
Carrying amount of building and improvements 9,604      
Accumulated depreciation 2,750      
Marion, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 990      
Initial cost of building and improvements 9,190      
Cost Capitalized Subsequent to Acquisition 824      
Carrying amount of land and land improvements 990      
Carrying amount of building and improvements 10,014      
Accumulated depreciation 3,048      
Marion, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,768      
Initial cost of building and improvements 17,415      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,768      
Carrying amount of building and improvements 17,415      
Accumulated depreciation 2,050      
Marlborough, UKK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,677      
Initial cost of building and improvements 6,822      
Cost Capitalized Subsequent to Acquisition 897      
Carrying amount of land and land improvements 2,930      
Carrying amount of building and improvements 7,466      
Accumulated depreciation 1,426      
Martinsville, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 349      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 349      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Matthews, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 560      
Initial cost of building and improvements 4,738      
Cost Capitalized Subsequent to Acquisition 152      
Carrying amount of land and land improvements 560      
Carrying amount of building and improvements 4,890      
Accumulated depreciation 2,362      
McHenry, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,576      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,576      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
McKinney, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,314      
Initial cost of building and improvements 23,777      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,314      
Carrying amount of building and improvements 23,777      
Accumulated depreciation 0      
McMurray, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,440      
Initial cost of building and improvements 15,805      
Cost Capitalized Subsequent to Acquisition 3,894      
Carrying amount of land and land improvements 1,440      
Carrying amount of building and improvements 19,699      
Accumulated depreciation 5,287      
Medicine Hat, AB | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 932      
Initial cost of building and improvements 5,566      
Cost Capitalized Subsequent to Acquisition 551      
Carrying amount of land and land improvements 1,010      
Carrying amount of building and improvements 6,039      
Accumulated depreciation 1,246      
Mentor, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,827      
Initial cost of building and improvements 9,938      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,827      
Carrying amount of building and improvements 9,938      
Accumulated depreciation 931      
Mequon, WI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,238      
Initial cost of building and improvements 17,761      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,238      
Carrying amount of building and improvements 17,761      
Accumulated depreciation 159      
Miamisburg, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 786      
Initial cost of building and improvements 3,232      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 786      
Carrying amount of building and improvements 3,232      
Accumulated depreciation 427      
Middleburg Heights, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 960      
Initial cost of building and improvements 7,780      
Cost Capitalized Subsequent to Acquisition 472      
Carrying amount of land and land improvements 960      
Carrying amount of building and improvements 8,252      
Accumulated depreciation 3,526      
Middleton, WI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 420      
Initial cost of building and improvements 4,006      
Cost Capitalized Subsequent to Acquisition 600      
Carrying amount of land and land improvements 420      
Carrying amount of building and improvements 4,606      
Accumulated depreciation 2,254      
Midlothian, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,015      
Initial cost of building and improvements 8,602      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,015      
Carrying amount of building and improvements 8,602      
Accumulated depreciation 268      
Milton Keynes, UKJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,826      
Initial cost of building and improvements 18,654      
Cost Capitalized Subsequent to Acquisition 1,930      
Carrying amount of land and land improvements 1,998      
Carrying amount of building and improvements 20,412      
Accumulated depreciation 3,643      
Minnetonka, MN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,080      
Initial cost of building and improvements 24,360      
Cost Capitalized Subsequent to Acquisition 2,935      
Carrying amount of land and land improvements 2,080      
Carrying amount of building and improvements 27,295      
Accumulated depreciation 7,688      
Mishawaka, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 740      
Initial cost of building and improvements 10,698      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 740      
Carrying amount of building and improvements 10,698      
Accumulated depreciation 3,337      
Moline, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,946      
Initial cost of building and improvements 18,672      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,946      
Carrying amount of building and improvements 18,672      
Accumulated depreciation 1,634      
Monroe, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 470      
Initial cost of building and improvements 3,681      
Cost Capitalized Subsequent to Acquisition 839      
Carrying amount of land and land improvements 470      
Carrying amount of building and improvements 4,520      
Accumulated depreciation 2,150      
Monroe, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 310      
Initial cost of building and improvements 4,799      
Cost Capitalized Subsequent to Acquisition 922      
Carrying amount of land and land improvements 310      
Carrying amount of building and improvements 5,721      
Accumulated depreciation 2,720      
Monroe, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 450      
Initial cost of building and improvements 4,021      
Cost Capitalized Subsequent to Acquisition 417      
Carrying amount of land and land improvements 450      
Carrying amount of building and improvements 4,438      
Accumulated depreciation 2,050      
Monroe Township, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,250      
Initial cost of building and improvements 27,771      
Cost Capitalized Subsequent to Acquisition 765      
Carrying amount of land and land improvements 3,250      
Carrying amount of building and improvements 28,536      
Accumulated depreciation 4,568      
Monroeville, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,216      
Initial cost of building and improvements 12,749      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,216      
Carrying amount of building and improvements 12,749      
Accumulated depreciation 1,420      
Monroeville, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,237      
Initial cost of building and improvements 3,641      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,237      
Carrying amount of building and improvements 3,641      
Accumulated depreciation 540      
Montgomeryville, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,176      
Initial cost of building and improvements 9,824      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,176      
Carrying amount of building and improvements 9,824      
Accumulated depreciation 967      
Montville, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,500      
Initial cost of building and improvements 31,002      
Cost Capitalized Subsequent to Acquisition 1,699      
Carrying amount of land and land improvements 3,500      
Carrying amount of building and improvements 32,701      
Accumulated depreciation 9,078      
Moorestown, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,143      
Initial cost of building and improvements 23,902      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,143      
Carrying amount of building and improvements 23,902      
Accumulated depreciation 5,363      
Morehead City, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 200      
Initial cost of building and improvements 3,104      
Cost Capitalized Subsequent to Acquisition 2,039      
Carrying amount of land and land improvements 200      
Carrying amount of building and improvements 5,143      
Accumulated depreciation 2,594      
Moulton, UKF | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,695      
Initial cost of building and improvements 12,510      
Cost Capitalized Subsequent to Acquisition 1,886      
Carrying amount of land and land improvements 1,691      
Carrying amount of building and improvements 14,400      
Accumulated depreciation 1,726      
Mountainside, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,097      
Initial cost of building and improvements 7,807      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,097      
Carrying amount of building and improvements 7,807      
Accumulated depreciation 741      
Mt. Pleasant, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,863      
Initial cost of building and improvements 6,467      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,863      
Carrying amount of building and improvements 6,467      
Accumulated depreciation 399      
Naperville, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,470      
Initial cost of building and improvements 29,547      
Cost Capitalized Subsequent to Acquisition 3,457      
Carrying amount of land and land improvements 3,470      
Carrying amount of building and improvements 33,004      
Accumulated depreciation 8,883      
Naples, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,222      
Initial cost of building and improvements 10,639      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,222      
Carrying amount of building and improvements 10,639      
Accumulated depreciation 1,057      
Naples, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,672      
Initial cost of building and improvements 23,119      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,672      
Carrying amount of building and improvements 23,119      
Accumulated depreciation 2,558      
Naples, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,854      
Initial cost of building and improvements 12,398      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,854      
Carrying amount of building and improvements 12,398      
Accumulated depreciation 1,109      
Nashville, TN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,910      
Initial cost of building and improvements 29,590      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,910      
Carrying amount of building and improvements 29,590      
Accumulated depreciation 10,698      
Needham, MA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,610      
Initial cost of building and improvements 12,667      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,610      
Carrying amount of building and improvements 12,667      
Accumulated depreciation 6,277      
Needham, MA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,957      
Initial cost of building and improvements 71,163      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,957      
Carrying amount of building and improvements 71,163      
Accumulated depreciation 0      
New Lenox, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,225      
Initial cost of building and improvements 21,575      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,225      
Carrying amount of building and improvements 21,575      
Accumulated depreciation 1,706      
New Moston, UKD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,480      
Initial cost of building and improvements 4,378      
Cost Capitalized Subsequent to Acquisition 553      
Carrying amount of land and land improvements 1,620      
Carrying amount of building and improvements 4,791      
Accumulated depreciation 1,111      
Newark, DE | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 560      
Initial cost of building and improvements 21,220      
Cost Capitalized Subsequent to Acquisition 2,442      
Carrying amount of land and land improvements 560      
Carrying amount of building and improvements 23,662      
Accumulated depreciation 9,771      
Newcastle Under Lyme, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,110      
Initial cost of building and improvements 5,655      
Cost Capitalized Subsequent to Acquisition 638      
Carrying amount of land and land improvements 1,215      
Carrying amount of building and improvements 6,188      
Accumulated depreciation 1,371      
Newcastle-under-Lyme, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,125      
Initial cost of building and improvements 5,537      
Cost Capitalized Subsequent to Acquisition 628      
Carrying amount of land and land improvements 1,231      
Carrying amount of building and improvements 6,059      
Accumulated depreciation 1,158      
Newport News, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 839      
Initial cost of building and improvements 6,077      
Cost Capitalized Subsequent to Acquisition 6      
Carrying amount of land and land improvements 839      
Carrying amount of building and improvements 6,083      
Accumulated depreciation 1,402      
Norman, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 55      
Initial cost of building and improvements 1,484      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 55      
Carrying amount of building and improvements 1,484      
Accumulated depreciation 1,031      
Norman, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,480      
Initial cost of building and improvements 33,330      
Cost Capitalized Subsequent to Acquisition 604      
Carrying amount of land and land improvements 1,480      
Carrying amount of building and improvements 33,934      
Accumulated depreciation 8,152      
North Augusta, SC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 332      
Initial cost of building and improvements 2,558      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 332      
Carrying amount of building and improvements 2,558      
Accumulated depreciation 1,527      
Northampton, UKF | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,182      
Initial cost of building and improvements 17,348      
Cost Capitalized Subsequent to Acquisition 2,124      
Carrying amount of land and land improvements 5,670      
Carrying amount of building and improvements 18,984      
Accumulated depreciation 4,373      
Northampton, UKF | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,013      
Initial cost of building and improvements 6,257      
Cost Capitalized Subsequent to Acquisition 780      
Carrying amount of land and land improvements 2,203      
Carrying amount of building and improvements 6,847      
Accumulated depreciation 1,227      
Northbrook, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,298      
Initial cost of building and improvements 13,337      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,298      
Carrying amount of building and improvements 13,337      
Accumulated depreciation 1,222      
Nottingham, UKF | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,628      
Initial cost of building and improvements 6,263      
Cost Capitalized Subsequent to Acquisition 744      
Carrying amount of land and land improvements 1,782      
Carrying amount of building and improvements 6,853      
Accumulated depreciation 1,214      
Nuneaton, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,325      
Initial cost of building and improvements 8,983      
Cost Capitalized Subsequent to Acquisition 1,159      
Carrying amount of land and land improvements 3,638      
Carrying amount of building and improvements 9,829      
Accumulated depreciation 2,180      
Nuthall, UKF | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,498      
Initial cost of building and improvements 10,436      
Cost Capitalized Subsequent to Acquisition 1,220      
Carrying amount of land and land improvements 2,734      
Carrying amount of building and improvements 11,420      
Accumulated depreciation 2,559      
Oak Lawn, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,418      
Initial cost of building and improvements 5,426      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,418      
Carrying amount of building and improvements 5,426      
Accumulated depreciation 494      
Oak Lawn, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,876      
Initial cost of building and improvements 7,985      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,876      
Carrying amount of building and improvements 7,985      
Accumulated depreciation 754      
Oakland, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,760      
Initial cost of building and improvements 16,143      
Cost Capitalized Subsequent to Acquisition 282      
Carrying amount of land and land improvements 4,760      
Carrying amount of building and improvements 16,425      
Accumulated depreciation 3,244      
Ocala, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,340      
Initial cost of building and improvements 10,564      
Cost Capitalized Subsequent to Acquisition 206      
Carrying amount of land and land improvements 1,340      
Carrying amount of building and improvements 10,770      
Accumulated depreciation 3,659      
Oklahoma City, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 590      
Initial cost of building and improvements 7,513      
Cost Capitalized Subsequent to Acquisition 39      
Carrying amount of land and land improvements 590      
Carrying amount of building and improvements 7,552      
Accumulated depreciation 2,796      
Oklahoma City, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 760      
Initial cost of building and improvements 7,017      
Cost Capitalized Subsequent to Acquisition 98      
Carrying amount of land and land improvements 760      
Carrying amount of building and improvements 7,115      
Accumulated depreciation 2,575      
Oklahoma City, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 18,198      
Carrying amount of land and land improvements 1,590      
Carrying amount of building and improvements 16,608      
Accumulated depreciation 1,090      
Olathe, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,930      
Initial cost of building and improvements 19,765      
Cost Capitalized Subsequent to Acquisition 553      
Carrying amount of land and land improvements 1,930      
Carrying amount of building and improvements 20,318      
Accumulated depreciation 3,619      
Ona, WV | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 950      
Initial cost of building and improvements 7,558      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 950      
Carrying amount of building and improvements 7,558      
Accumulated depreciation 2,215      
Oneonta, NY | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 80      
Initial cost of building and improvements 5,020      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 80      
Carrying amount of building and improvements 5,020      
Accumulated depreciation 1,824      
Orem, UT | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,150      
Initial cost of building and improvements 24,107      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,150      
Carrying amount of building and improvements 24,107      
Accumulated depreciation 3,885      
Osage City, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 50      
Initial cost of building and improvements 1,700      
Cost Capitalized Subsequent to Acquisition 142      
Carrying amount of land and land improvements 50      
Carrying amount of building and improvements 1,842      
Accumulated depreciation 375      
Osawatomie, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 130      
Initial cost of building and improvements 2,970      
Cost Capitalized Subsequent to Acquisition 136      
Carrying amount of land and land improvements 130      
Carrying amount of building and improvements 3,106      
Accumulated depreciation 574      
Ottawa, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 160      
Initial cost of building and improvements 6,590      
Cost Capitalized Subsequent to Acquisition 44      
Carrying amount of land and land improvements 160      
Carrying amount of building and improvements 6,634      
Accumulated depreciation 1,114      
Overland Park, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 31,146      
Carrying amount of land and land improvements 3,730      
Carrying amount of building and improvements 27,416      
Accumulated depreciation 9,289      
Overland Park, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,500      
Initial cost of building and improvements 29,105      
Cost Capitalized Subsequent to Acquisition 7,295      
Carrying amount of land and land improvements 4,500      
Carrying amount of building and improvements 36,400      
Accumulated depreciation 11,615      
Overland Park, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 410      
Initial cost of building and improvements 2,840      
Cost Capitalized Subsequent to Acquisition 92      
Carrying amount of land and land improvements 410      
Carrying amount of building and improvements 2,932      
Accumulated depreciation 564      
Overland Park, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,300      
Initial cost of building and improvements 25,311      
Cost Capitalized Subsequent to Acquisition 677      
Carrying amount of land and land improvements 1,300      
Carrying amount of building and improvements 25,988      
Accumulated depreciation 4,526      
Owasso, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 215      
Initial cost of building and improvements 1,380      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 215      
Carrying amount of building and improvements 1,380      
Accumulated depreciation 898      
Palm Beach Gardens, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,082      
Initial cost of building and improvements 6,622      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,082      
Carrying amount of building and improvements 6,622      
Accumulated depreciation 692      
Palm Coast, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 870      
Initial cost of building and improvements 10,957      
Cost Capitalized Subsequent to Acquisition 233      
Carrying amount of land and land improvements 870      
Carrying amount of building and improvements 11,190      
Accumulated depreciation 3,663      
Palm Harbor, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,490      
Initial cost of building and improvements 23,901      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,490      
Carrying amount of building and improvements 23,901      
Accumulated depreciation 692      
Palm Harbor, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,306      
Initial cost of building and improvements 13,807      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,306      
Carrying amount of building and improvements 13,807      
Accumulated depreciation 1,357      
Palm Harbor, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,281      
Initial cost of building and improvements 22,450      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,281      
Carrying amount of building and improvements 22,450      
Accumulated depreciation 2,166      
Palos Heights, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,225      
Initial cost of building and improvements 12,453      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,225      
Carrying amount of building and improvements 12,453      
Accumulated depreciation 1,121      
Palos Heights, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,431      
Initial cost of building and improvements 28,803      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,431      
Carrying amount of building and improvements 28,803      
Accumulated depreciation 2,506      
Palos Heights, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,590      
Initial cost of building and improvements 7,644      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,590      
Carrying amount of building and improvements 7,644      
Accumulated depreciation 691      
Panama City Beach, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 900      
Initial cost of building and improvements 6,402      
Cost Capitalized Subsequent to Acquisition 734      
Carrying amount of land and land improvements 900      
Carrying amount of building and improvements 7,136      
Accumulated depreciation 1,715      
Paola, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 190      
Initial cost of building and improvements 5,610      
Cost Capitalized Subsequent to Acquisition 59      
Carrying amount of land and land improvements 190      
Carrying amount of building and improvements 5,669      
Accumulated depreciation 972      
Parma, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 960      
Initial cost of building and improvements 12,718      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 960      
Carrying amount of building and improvements 12,718      
Accumulated depreciation 1,227      
Parma, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,833      
Initial cost of building and improvements 10,314      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,833      
Carrying amount of building and improvements 10,314      
Accumulated depreciation 1,120      
Paulsboro, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,264      
Initial cost of building and improvements 8,023      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,264      
Carrying amount of building and improvements 8,023      
Accumulated depreciation 784      
Paw Paw, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,687      
Initial cost of building and improvements 5,602      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,687      
Carrying amount of building and improvements 5,602      
Accumulated depreciation 360      
Perrysburg, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,456      
Initial cost of building and improvements 5,431      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,456      
Carrying amount of building and improvements 5,431      
Accumulated depreciation 535      
Perrysburg, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,213      
Initial cost of building and improvements 7,108      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,213      
Carrying amount of building and improvements 7,108      
Accumulated depreciation 649      
Philadelphia, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,930      
Initial cost of building and improvements 10,433      
Cost Capitalized Subsequent to Acquisition 3,536      
Carrying amount of land and land improvements 2,930      
Carrying amount of building and improvements 13,969      
Accumulated depreciation 4,529      
Pickerington, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,072      
Initial cost of building and improvements 27,651      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,072      
Carrying amount of building and improvements 27,651      
Accumulated depreciation 296      
Pikesville, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 2,487      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,487      
Accumulated depreciation 213      
Pikesville, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,247      
Initial cost of building and improvements 8,379      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,247      
Carrying amount of building and improvements 8,379      
Accumulated depreciation 854      
Pinehurst, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 290      
Initial cost of building and improvements 2,690      
Cost Capitalized Subsequent to Acquisition 718      
Carrying amount of land and land improvements 290      
Carrying amount of building and improvements 3,408      
Accumulated depreciation 1,607      
Piqua, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 204      
Initial cost of building and improvements 1,885      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 204      
Carrying amount of building and improvements 1,885      
Accumulated depreciation 1,158      
Piscataway, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,100      
Initial cost of building and improvements 33,351      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,100      
Carrying amount of building and improvements 33,351      
Accumulated depreciation 4,257      
Pittsburgh, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,750      
Initial cost of building and improvements 8,572      
Cost Capitalized Subsequent to Acquisition 6,320      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 14,892      
Accumulated depreciation 4,421      
Pittsburgh, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 603      
Initial cost of building and improvements 11,354      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 603      
Carrying amount of building and improvements 11,354      
Accumulated depreciation 1,089      
Pittsburgh, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,005      
Initial cost of building and improvements 15,160      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,005      
Carrying amount of building and improvements 15,160      
Accumulated depreciation 1,400      
Pittsburgh, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,140      
Initial cost of building and improvements 3,164      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,140      
Carrying amount of building and improvements 3,164      
Accumulated depreciation 295      
Pittsburgh, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 761      
Initial cost of building and improvements 4,213      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 761      
Carrying amount of building and improvements 4,213      
Accumulated depreciation 376      
Pittsburgh, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,480      
Initial cost of building and improvements 9,712      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,480      
Carrying amount of building and improvements 9,712      
Accumulated depreciation 1,013      
Pittsburgh, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,139      
Initial cost of building and improvements 5,844      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,139      
Carrying amount of building and improvements 5,844      
Accumulated depreciation 597      
Plainview, NY | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,990      
Initial cost of building and improvements 11,969      
Cost Capitalized Subsequent to Acquisition 1,713      
Carrying amount of land and land improvements 3,990      
Carrying amount of building and improvements 13,682      
Accumulated depreciation 4,203      
Plano, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,840      
Initial cost of building and improvements 20,152      
Cost Capitalized Subsequent to Acquisition 560      
Carrying amount of land and land improvements 1,840      
Carrying amount of building and improvements 20,712      
Accumulated depreciation 3,413      
Poole, UKK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,478      
Initial cost of building and improvements 17,481      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,478      
Carrying amount of building and improvements 17,481      
Accumulated depreciation 1,238      
Potomac, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,448      
Initial cost of building and improvements 14,622      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,448      
Carrying amount of building and improvements 14,622      
Accumulated depreciation 1,325      
Potomac, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,119      
Initial cost of building and improvements 14,916      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,119      
Carrying amount of building and improvements 14,916      
Accumulated depreciation 1,396      
Pottstown, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 984      
Initial cost of building and improvements 4,563      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 984      
Carrying amount of building and improvements 4,563      
Accumulated depreciation 458      
Powell, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,910      
Initial cost of building and improvements 18,008      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,910      
Carrying amount of building and improvements 18,008      
Accumulated depreciation 224      
Powell, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,300      
Initial cost of building and improvements 26,198      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,300      
Carrying amount of building and improvements 26,198      
Accumulated depreciation 281      
Prior Lake, MN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 13,058      
Initial cost of land and land improvements 1,870      
Initial cost of building and improvements 29,849      
Cost Capitalized Subsequent to Acquisition 300      
Carrying amount of land and land improvements 1,870      
Carrying amount of building and improvements 30,149      
Accumulated depreciation 4,759      
Prospect, KY | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,533      
Initial cost of building and improvements 9,963      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,533      
Carrying amount of building and improvements 9,963      
Accumulated depreciation 359      
Raleigh, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,598      
Initial cost of building and improvements 88,870      
Cost Capitalized Subsequent to Acquisition 900      
Carrying amount of land and land improvements 7,598      
Carrying amount of building and improvements 89,770      
Accumulated depreciation 11,050      
Raleigh, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,530      
Initial cost of building and improvements 59,589      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,530      
Carrying amount of building and improvements 59,589      
Accumulated depreciation 14,540      
Raleigh, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,580      
Initial cost of building and improvements 16,837      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,580      
Carrying amount of building and improvements 16,837      
Accumulated depreciation 4,370      
Red Bank, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,050      
Initial cost of building and improvements 21,275      
Cost Capitalized Subsequent to Acquisition 1,158      
Carrying amount of land and land improvements 1,050      
Carrying amount of building and improvements 22,433      
Accumulated depreciation 6,077      
Redondo Beach, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 9,557      
Cost Capitalized Subsequent to Acquisition 709      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 10,266      
Accumulated depreciation 8,658      
Reidsville, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 170      
Initial cost of building and improvements 3,830      
Cost Capitalized Subsequent to Acquisition 1,473      
Carrying amount of land and land improvements 170      
Carrying amount of building and improvements 5,303      
Accumulated depreciation 2,375      
Richardson, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,468      
Initial cost of building and improvements 12,975      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,468      
Carrying amount of building and improvements 12,975      
Accumulated depreciation 1,223      
Richmond, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 700      
Initial cost of building and improvements 14,222      
Cost Capitalized Subsequent to Acquisition 393      
Carrying amount of land and land improvements 700      
Carrying amount of building and improvements 14,615      
Accumulated depreciation 2,585      
Richmond, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,261      
Initial cost of building and improvements 17,974      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,261      
Carrying amount of building and improvements 17,974      
Accumulated depreciation 1,610      
Richmond, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,046      
Initial cost of building and improvements 8,233      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,046      
Carrying amount of building and improvements 8,233      
Accumulated depreciation 789      
Roanoke, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 748      
Initial cost of building and improvements 4,483      
Cost Capitalized Subsequent to Acquisition 5      
Carrying amount of land and land improvements 748      
Carrying amount of building and improvements 4,488      
Accumulated depreciation 1,277      
Rock Hill, SC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,825      
Initial cost of building and improvements 7,676      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,825      
Carrying amount of building and improvements 7,676      
Accumulated depreciation 327      
Rockford, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,386      
Initial cost of building and improvements 13,546      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,386      
Carrying amount of building and improvements 13,546      
Accumulated depreciation 594      
Rockville Centre, NY | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,290      
Initial cost of building and improvements 20,310      
Cost Capitalized Subsequent to Acquisition 1,379      
Carrying amount of land and land improvements 4,290      
Carrying amount of building and improvements 21,689      
Accumulated depreciation 6,215      
Rockwall, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,220      
Initial cost of building and improvements 17,650      
Cost Capitalized Subsequent to Acquisition 230      
Carrying amount of land and land improvements 2,220      
Carrying amount of building and improvements 17,880      
Accumulated depreciation 2,969      
Romeoville, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,895      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,895      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Roseville, MN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,140      
Initial cost of building and improvements 24,679      
Cost Capitalized Subsequent to Acquisition 100      
Carrying amount of land and land improvements 2,140      
Carrying amount of building and improvements 24,779      
Accumulated depreciation 3,960      
Rugeley, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,900      
Initial cost of building and improvements 10,262      
Cost Capitalized Subsequent to Acquisition 1,146      
Carrying amount of land and land improvements 2,079      
Carrying amount of building and improvements 11,229      
Accumulated depreciation 2,636      
Ruston, LA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 710      
Initial cost of building and improvements 9,790      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 710      
Carrying amount of building and improvements 9,790      
Accumulated depreciation 3,006      
S Holland, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,423      
Initial cost of building and improvements 8,907      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,423      
Carrying amount of building and improvements 8,907      
Accumulated depreciation 859      
Salem, OR | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 449      
Initial cost of building and improvements 5,171      
Cost Capitalized Subsequent to Acquisition 1      
Carrying amount of land and land improvements 449      
Carrying amount of building and improvements 5,172      
Accumulated depreciation 3,071      
Salisbury, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 370      
Initial cost of building and improvements 5,697      
Cost Capitalized Subsequent to Acquisition 390      
Carrying amount of land and land improvements 370      
Carrying amount of building and improvements 6,087      
Accumulated depreciation 2,838      
San Angelo, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 260      
Initial cost of building and improvements 8,800      
Cost Capitalized Subsequent to Acquisition 425      
Carrying amount of land and land improvements 260      
Carrying amount of building and improvements 9,225      
Accumulated depreciation 4,022      
San Angelo, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,050      
Initial cost of building and improvements 24,689      
Cost Capitalized Subsequent to Acquisition 1,361      
Carrying amount of land and land improvements 1,050      
Carrying amount of building and improvements 26,050      
Accumulated depreciation 5,066      
San Antonio, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,499      
Initial cost of building and improvements 12,658      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,499      
Carrying amount of building and improvements 12,658      
Accumulated depreciation 1,180      
San Diego, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 22,003      
Cost Capitalized Subsequent to Acquisition 1,845      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 23,848      
Accumulated depreciation 7,856      
San Juan Capistrano, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,390      
Initial cost of building and improvements 6,942      
Cost Capitalized Subsequent to Acquisition 1,506      
Carrying amount of land and land improvements 1,390      
Carrying amount of building and improvements 8,448      
Accumulated depreciation 4,256      
Sand Springs, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 910      
Initial cost of building and improvements 19,654      
Cost Capitalized Subsequent to Acquisition 238      
Carrying amount of land and land improvements 910      
Carrying amount of building and improvements 19,892      
Accumulated depreciation 4,895      
Sandusky, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 967      
Initial cost of building and improvements 6,738      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 967      
Carrying amount of building and improvements 6,738      
Accumulated depreciation 314      
Sarasota, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 475      
Initial cost of building and improvements 3,175      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 475      
Carrying amount of building and improvements 3,175      
Accumulated depreciation 2,138      
Sarasota, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,101      
Initial cost of building and improvements 11,204      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,101      
Carrying amount of building and improvements 11,204      
Accumulated depreciation 1,679      
Sarasota, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,370      
Initial cost of building and improvements 4,082      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,370      
Carrying amount of building and improvements 4,082      
Accumulated depreciation 392      
Sarasota, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,792      
Initial cost of building and improvements 11,173      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,792      
Carrying amount of building and improvements 11,173      
Accumulated depreciation 1,040      
Sarasota, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 443      
Initial cost of building and improvements 8,892      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 443      
Carrying amount of building and improvements 8,892      
Accumulated depreciation 915      
Scranton, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 320      
Initial cost of building and improvements 12,144      
Cost Capitalized Subsequent to Acquisition 3      
Carrying amount of land and land improvements 320      
Carrying amount of building and improvements 12,147      
Accumulated depreciation 2,422      
Scranton, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 440      
Initial cost of building and improvements 17,609      
Cost Capitalized Subsequent to Acquisition 375      
Carrying amount of land and land improvements 440      
Carrying amount of building and improvements 17,984      
Accumulated depreciation 3,527      
Seminole, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,165      
Initial cost of building and improvements 8,975      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,165      
Carrying amount of building and improvements 8,975      
Accumulated depreciation 894      
Seven Fields, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 484      
Initial cost of building and improvements 4,663      
Cost Capitalized Subsequent to Acquisition 59      
Carrying amount of land and land improvements 484      
Carrying amount of building and improvements 4,722      
Accumulated depreciation 2,805      
Sewell, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,127      
Initial cost of building and improvements 14,090      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,127      
Carrying amount of building and improvements 14,090      
Accumulated depreciation 1,494      
Shawnee, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 80      
Initial cost of building and improvements 1,400      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 80      
Carrying amount of building and improvements 1,400      
Accumulated depreciation 936      
Silver Spring, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,469      
Initial cost of building and improvements 10,392      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,469      
Carrying amount of building and improvements 10,392      
Accumulated depreciation 969      
Silver Spring, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,678      
Initial cost of building and improvements 11,679      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,678      
Carrying amount of building and improvements 11,679      
Accumulated depreciation 1,161      
Silvis, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 880      
Initial cost of building and improvements 16,420      
Cost Capitalized Subsequent to Acquisition 139      
Carrying amount of land and land improvements 880      
Carrying amount of building and improvements 16,559      
Accumulated depreciation 5,024      
Sinking Spring, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,393      
Initial cost of building and improvements 19,842      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,393      
Carrying amount of building and improvements 19,842      
Accumulated depreciation 1,829      
Sittingbourne, UKJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,357      
Initial cost of building and improvements 6,539      
Cost Capitalized Subsequent to Acquisition 744      
Carrying amount of land and land improvements 1,485      
Carrying amount of building and improvements 7,155      
Accumulated depreciation 1,313      
Smithfield, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 290      
Initial cost of building and improvements 5,680      
Cost Capitalized Subsequent to Acquisition 844      
Carrying amount of land and land improvements 290      
Carrying amount of building and improvements 6,524      
Accumulated depreciation 2,767      
Smithfield, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 360      
Initial cost of building and improvements 8,216      
Cost Capitalized Subsequent to Acquisition 179      
Carrying amount of land and land improvements 360      
Carrying amount of building and improvements 8,395      
Accumulated depreciation 1,640      
South Bend, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 670      
Initial cost of building and improvements 17,770      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 670      
Carrying amount of building and improvements 17,770      
Accumulated depreciation 3,700      
South Point, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,135      
Initial cost of building and improvements 9,387      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,135      
Carrying amount of building and improvements 9,387      
Accumulated depreciation 867      
Southampton, UKJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,519      
Initial cost of building and improvements 16,041      
Cost Capitalized Subsequent to Acquisition 1,027      
Carrying amount of land and land improvements 1,608      
Carrying amount of building and improvements 16,979      
Accumulated depreciation 1,946      
Southbury, CT | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,860      
Initial cost of building and improvements 23,613      
Cost Capitalized Subsequent to Acquisition 1,088      
Carrying amount of land and land improvements 1,860      
Carrying amount of building and improvements 24,701      
Accumulated depreciation 6,859      
Spokane, WA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,649      
Initial cost of building and improvements 11,699      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,649      
Carrying amount of building and improvements 11,699      
Accumulated depreciation 1,092      
Springfield, IL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 990      
Initial cost of building and improvements 13,378      
Cost Capitalized Subsequent to Acquisition 1,085      
Carrying amount of land and land improvements 990      
Carrying amount of building and improvements 14,463      
Accumulated depreciation 2,951      
St. Paul, MN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,100      
Initial cost of building and improvements 33,019      
Cost Capitalized Subsequent to Acquisition 100      
Carrying amount of land and land improvements 2,100      
Carrying amount of building and improvements 33,119      
Accumulated depreciation 5,245      
Stafford, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,009      
Initial cost of building and improvements 8,238      
Cost Capitalized Subsequent to Acquisition 599      
Carrying amount of land and land improvements 2,126      
Carrying amount of building and improvements 8,720      
Accumulated depreciation 1,232      
Stamford, UKF | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,820      
Initial cost of building and improvements 3,238      
Cost Capitalized Subsequent to Acquisition 477      
Carrying amount of land and land improvements 1,991      
Carrying amount of building and improvements 3,544      
Accumulated depreciation 694      
Statesville, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 150      
Initial cost of building and improvements 1,447      
Cost Capitalized Subsequent to Acquisition 377      
Carrying amount of land and land improvements 150      
Carrying amount of building and improvements 1,824      
Accumulated depreciation 866      
Statesville, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 310      
Initial cost of building and improvements 6,183      
Cost Capitalized Subsequent to Acquisition 693      
Carrying amount of land and land improvements 310      
Carrying amount of building and improvements 6,876      
Accumulated depreciation 2,960      
Statesville, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 140      
Initial cost of building and improvements 3,627      
Cost Capitalized Subsequent to Acquisition 53      
Carrying amount of land and land improvements 140      
Carrying amount of building and improvements 3,680      
Accumulated depreciation 1,763      
Staunton, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 899      
Initial cost of building and improvements 6,391      
Cost Capitalized Subsequent to Acquisition 6      
Carrying amount of land and land improvements 899      
Carrying amount of building and improvements 6,397      
Accumulated depreciation 1,513      
Sterling Heights, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 790      
Initial cost of building and improvements 10,784      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 790      
Carrying amount of building and improvements 10,784      
Accumulated depreciation 1,013      
Sterling Heights, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,583      
Initial cost of building and improvements 15,634      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,583      
Carrying amount of building and improvements 15,634      
Accumulated depreciation 1,491      
Stillwater, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 80      
Initial cost of building and improvements 1,400      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 80      
Carrying amount of building and improvements 1,400      
Accumulated depreciation 937      
Stratford-upon-Avon, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 790      
Initial cost of building and improvements 14,508      
Cost Capitalized Subsequent to Acquisition 1,442      
Carrying amount of land and land improvements 864      
Carrying amount of building and improvements 15,876      
Accumulated depreciation 2,749      
Stroudsburg, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 340      
Initial cost of building and improvements 16,313      
Cost Capitalized Subsequent to Acquisition 56      
Carrying amount of land and land improvements 340      
Carrying amount of building and improvements 16,369      
Accumulated depreciation 3,666      
Sunbury, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 695      
Initial cost of building and improvements 7,244      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 695      
Carrying amount of building and improvements 7,244      
Accumulated depreciation 653      
Sunnyvale, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,946      
Initial cost of building and improvements 22,123      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,946      
Carrying amount of building and improvements 22,123      
Accumulated depreciation 1,986      
Superior, WI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,020      
Initial cost of building and improvements 13,735      
Cost Capitalized Subsequent to Acquisition 6,159      
Carrying amount of land and land improvements 1,020      
Carrying amount of building and improvements 19,894      
Accumulated depreciation 4,553      
Tacoma, WA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,522      
Initial cost of building and improvements 8,573      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,522      
Carrying amount of building and improvements 8,573      
Accumulated depreciation 787      
Tallahassee, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,264      
Initial cost of building and improvements 9,652      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,264      
Carrying amount of building and improvements 9,652      
Accumulated depreciation 337      
Tampa, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,315      
Initial cost of building and improvements 6,911      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,315      
Carrying amount of building and improvements 6,911      
Accumulated depreciation 749      
Telford, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,048      
Initial cost of building and improvements 11,250      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,048      
Carrying amount of building and improvements 11,250      
Accumulated depreciation 61      
Terre Haute, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,370      
Initial cost of building and improvements 18,016      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,370      
Carrying amount of building and improvements 18,016      
Accumulated depreciation 3,517      
Texarkana, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 192      
Initial cost of building and improvements 1,403      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 192      
Carrying amount of building and improvements 1,403      
Accumulated depreciation 912      
The Villages, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,035      
Initial cost of building and improvements 7,446      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,035      
Carrying amount of building and improvements 7,446      
Accumulated depreciation 1,776      
Thomasville, GA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 530      
Initial cost of building and improvements 12,520      
Cost Capitalized Subsequent to Acquisition 1,347      
Carrying amount of land and land improvements 530      
Carrying amount of building and improvements 13,867      
Accumulated depreciation 3,129      
Thousand Oaks, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,425      
Initial cost of building and improvements 19,573      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,425      
Carrying amount of building and improvements 19,573      
Accumulated depreciation 643      
Three Rivers, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,255      
Initial cost of building and improvements 2,760      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,255      
Carrying amount of building and improvements 2,760      
Accumulated depreciation 340      
Tomball, TX | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,050      
Initial cost of building and improvements 13,300      
Cost Capitalized Subsequent to Acquisition 840      
Carrying amount of land and land improvements 1,050      
Carrying amount of building and improvements 14,140      
Accumulated depreciation 3,904      
Toms River, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,466      
Initial cost of building and improvements 23,311      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,466      
Carrying amount of building and improvements 23,311      
Accumulated depreciation 2,651      
Tonganoxie, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 310      
Initial cost of building and improvements 3,690      
Cost Capitalized Subsequent to Acquisition 76      
Carrying amount of land and land improvements 310      
Carrying amount of building and improvements 3,766      
Accumulated depreciation 712      
Topeka, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 260      
Initial cost of building and improvements 12,712      
Cost Capitalized Subsequent to Acquisition 101      
Carrying amount of land and land improvements 260      
Carrying amount of building and improvements 12,813      
Accumulated depreciation 3,267      
Towson, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,715      
Initial cost of building and improvements 13,111      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,715      
Carrying amount of building and improvements 13,111      
Accumulated depreciation 1,221      
Towson, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,100      
Initial cost of building and improvements 6,465      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,100      
Carrying amount of building and improvements 6,465      
Accumulated depreciation 576      
Towson, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,527      
Initial cost of building and improvements 3,126      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,527      
Carrying amount of building and improvements 3,126      
Accumulated depreciation 352      
Troy, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 200      
Initial cost of building and improvements 2,000      
Cost Capitalized Subsequent to Acquisition 4,254      
Carrying amount of land and land improvements 200      
Carrying amount of building and improvements 6,254      
Accumulated depreciation 2,681      
Troy, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,381      
Initial cost of building and improvements 24,445      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,381      
Carrying amount of building and improvements 24,445      
Accumulated depreciation 2,178      
Trumbull, CT | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,440      
Initial cost of building and improvements 43,384      
Cost Capitalized Subsequent to Acquisition 570      
Carrying amount of land and land improvements 4,440      
Carrying amount of building and improvements 43,954      
Accumulated depreciation 12,332      
Tulsa, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,100      
Initial cost of building and improvements 27,007      
Cost Capitalized Subsequent to Acquisition 2,233      
Carrying amount of land and land improvements 1,100      
Carrying amount of building and improvements 29,240      
Accumulated depreciation 4,029      
Tulsa, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 890      
Initial cost of building and improvements 9,410      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 890      
Carrying amount of building and improvements 9,410      
Accumulated depreciation 1,101      
Tulsa, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,390      
Initial cost of building and improvements 7,110      
Cost Capitalized Subsequent to Acquisition 1,102      
Carrying amount of land and land improvements 1,390      
Carrying amount of building and improvements 8,212      
Accumulated depreciation 2,819      
Tulsa, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,320      
Initial cost of building and improvements 10,087      
Cost Capitalized Subsequent to Acquisition 70      
Carrying amount of land and land improvements 1,320      
Carrying amount of building and improvements 10,157      
Accumulated depreciation 2,713      
Tulsa, OK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 12,733      
Initial cost of land and land improvements 1,752      
Initial cost of building and improvements 28,421      
Cost Capitalized Subsequent to Acquisition 94      
Carrying amount of land and land improvements 1,752      
Carrying amount of building and improvements 28,515      
Accumulated depreciation 3,639      
Tustin, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 840      
Initial cost of building and improvements 15,299      
Cost Capitalized Subsequent to Acquisition 537      
Carrying amount of land and land improvements 840      
Carrying amount of building and improvements 15,836      
Accumulated depreciation 4,910      
Twinsburg, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,446      
Initial cost of building and improvements 5,919      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,446      
Carrying amount of building and improvements 5,919      
Accumulated depreciation 610      
Union, KY | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 33,927      
Carrying amount of land and land improvements 2,242      
Carrying amount of building and improvements 31,685      
Accumulated depreciation 1,524      
Union, SC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,932      
Initial cost of building and improvements 2,372      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,932      
Carrying amount of building and improvements 2,372      
Accumulated depreciation 341      
Valparaiso, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 112      
Initial cost of building and improvements 2,558      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 112      
Carrying amount of building and improvements 2,558      
Accumulated depreciation 1,386      
Valparaiso, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 108      
Initial cost of building and improvements 2,962      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 108      
Carrying amount of building and improvements 2,962      
Accumulated depreciation 1,589      
Vancouver, WA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,503      
Initial cost of building and improvements 28,393      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,503      
Carrying amount of building and improvements 28,393      
Accumulated depreciation 2,507      
Venice, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,150      
Initial cost of building and improvements 10,674      
Cost Capitalized Subsequent to Acquisition 215      
Carrying amount of land and land improvements 1,150      
Carrying amount of building and improvements 10,889      
Accumulated depreciation 3,629      
Venice, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,246      
Initial cost of building and improvements 10,094      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,246      
Carrying amount of building and improvements 10,094      
Accumulated depreciation 1,001      
Vero Beach, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 263      
Initial cost of building and improvements 3,187      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 263      
Carrying amount of building and improvements 3,187      
Accumulated depreciation 1,702      
Vero Beach, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 297      
Initial cost of building and improvements 3,263      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 297      
Carrying amount of building and improvements 3,263      
Accumulated depreciation 1,750      
Vero Beach, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,580      
Initial cost of building and improvements 31,735      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,580      
Carrying amount of building and improvements 31,735      
Accumulated depreciation 956      
Vero Beach, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,256      
Initial cost of building and improvements 11,204      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,256      
Carrying amount of building and improvements 11,204      
Accumulated depreciation 384      
Virginia Beach, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,540      
Initial cost of building and improvements 22,593      
Cost Capitalized Subsequent to Acquisition 204      
Carrying amount of land and land improvements 1,540      
Carrying amount of building and improvements 22,797      
Accumulated depreciation 4,568      
Virginia Beach, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,004      
Initial cost of building and improvements 19,634      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,004      
Carrying amount of building and improvements 19,634      
Accumulated depreciation 263      
Voorhees, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,100      
Initial cost of building and improvements 25,950      
Cost Capitalized Subsequent to Acquisition 26      
Carrying amount of land and land improvements 3,100      
Carrying amount of building and improvements 25,976      
Accumulated depreciation 6,764      
Voorhees, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,193      
Initial cost of building and improvements 6,990      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,193      
Carrying amount of building and improvements 6,990      
Accumulated depreciation 722      
W Palm Beach, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,175      
Initial cost of building and improvements 8,294      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,175      
Carrying amount of building and improvements 8,294      
Accumulated depreciation 839      
W Palm Beach, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,921      
Initial cost of building and improvements 5,731      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,921      
Carrying amount of building and improvements 5,731      
Accumulated depreciation 560      
Wabash, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 670      
Initial cost of building and improvements 14,588      
Cost Capitalized Subsequent to Acquisition 1      
Carrying amount of land and land improvements 670      
Carrying amount of building and improvements 14,589      
Accumulated depreciation 3,157      
Waconia, MN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 890      
Initial cost of building and improvements 14,726      
Cost Capitalized Subsequent to Acquisition 4,495      
Carrying amount of land and land improvements 890      
Carrying amount of building and improvements 19,221      
Accumulated depreciation 5,098      
Wake Forest, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 200      
Initial cost of building and improvements 3,003      
Cost Capitalized Subsequent to Acquisition 2,621      
Carrying amount of land and land improvements 200      
Carrying amount of building and improvements 5,624      
Accumulated depreciation 2,642      
Wallingford, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,356      
Initial cost of building and improvements 6,487      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,356      
Carrying amount of building and improvements 6,487      
Accumulated depreciation 682      
Walnut Creek, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,358      
Initial cost of building and improvements 18,407      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,358      
Carrying amount of building and improvements 18,407      
Accumulated depreciation 1,696      
Walnut Creek, CA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,394      
Initial cost of building and improvements 39,084      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 5,394      
Carrying amount of building and improvements 39,084      
Accumulated depreciation 3,423      
Walsall, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,184      
Initial cost of building and improvements 8,562      
Cost Capitalized Subsequent to Acquisition 919      
Carrying amount of land and land improvements 1,296      
Carrying amount of building and improvements 9,369      
Accumulated depreciation 1,718      
Wamego, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 40      
Initial cost of building and improvements 2,510      
Cost Capitalized Subsequent to Acquisition 57      
Carrying amount of land and land improvements 40      
Carrying amount of building and improvements 2,567      
Accumulated depreciation 447      
Wareham, MA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 875      
Initial cost of building and improvements 7,906      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 875      
Carrying amount of building and improvements 7,906      
Accumulated depreciation 6,281      
Warren, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,000      
Initial cost of building and improvements 30,810      
Cost Capitalized Subsequent to Acquisition 1,337      
Carrying amount of land and land improvements 2,000      
Carrying amount of building and improvements 32,147      
Accumulated depreciation 8,691      
Waterloo, IA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 605      
Initial cost of building and improvements 3,030      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 605      
Carrying amount of building and improvements 3,030      
Accumulated depreciation 308      
Wayne, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,427      
Initial cost of building and improvements 15,674      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,427      
Carrying amount of building and improvements 15,674      
Accumulated depreciation 1,835      
Wellingborough, UKF | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,480      
Initial cost of building and improvements 5,724      
Cost Capitalized Subsequent to Acquisition 679      
Carrying amount of land and land improvements 1,620      
Carrying amount of building and improvements 6,263      
Accumulated depreciation 1,273      
West Bend, WI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 620      
Initial cost of building and improvements 17,790      
Cost Capitalized Subsequent to Acquisition 38      
Carrying amount of land and land improvements 620      
Carrying amount of building and improvements 17,828      
Accumulated depreciation 4,729      
West Des Moines, IA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 828      
Initial cost of building and improvements 5,103      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 828      
Carrying amount of building and improvements 5,103      
Accumulated depreciation 525      
West Milford, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,960      
Initial cost of building and improvements 24,614      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,960      
Carrying amount of building and improvements 24,614      
Accumulated depreciation 2,140      
West Orange, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,347      
Initial cost of building and improvements 19,389      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,347      
Carrying amount of building and improvements 19,389      
Accumulated depreciation 2,126      
West Reading, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 890      
Initial cost of building and improvements 12,118      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 890      
Carrying amount of building and improvements 12,118      
Accumulated depreciation 1,057      
Westerville, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 740      
Initial cost of building and improvements 8,287      
Cost Capitalized Subsequent to Acquisition 4,146      
Carrying amount of land and land improvements 740      
Carrying amount of building and improvements 12,433      
Accumulated depreciation 11,082      
Westerville, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 26,086      
Carrying amount of land and land improvements 2,566      
Carrying amount of building and improvements 23,520      
Accumulated depreciation 980      
Westerville, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,420      
Initial cost of building and improvements 5,371      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,420      
Carrying amount of building and improvements 5,371      
Accumulated depreciation 521      
Westerville, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,582      
Initial cost of building and improvements 10,279      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,582      
Carrying amount of building and improvements 10,279      
Accumulated depreciation 1,014      
Westfield, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 890      
Initial cost of building and improvements 15,964      
Cost Capitalized Subsequent to Acquisition 1      
Carrying amount of land and land improvements 890      
Carrying amount of building and improvements 15,965      
Accumulated depreciation 3,424      
Westlake, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 855      
Initial cost of building and improvements 11,963      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 855      
Carrying amount of building and improvements 11,963      
Accumulated depreciation 1,136      
Weston Super Mare, UKK | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,517      
Initial cost of building and improvements 7,054      
Cost Capitalized Subsequent to Acquisition 902      
Carrying amount of land and land improvements 2,754      
Carrying amount of building and improvements 7,719      
Accumulated depreciation 1,721      
Wheaton, MD | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,864      
Initial cost of building and improvements 3,788      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,864      
Carrying amount of building and improvements 3,788      
Accumulated depreciation 382      
Whippany, NJ | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,571      
Initial cost of building and improvements 14,977      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,571      
Carrying amount of building and improvements 14,977      
Accumulated depreciation 1,430      
Whitehall, MI | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,645      
Initial cost of building and improvements 6,789      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,645      
Carrying amount of building and improvements 6,789      
Accumulated depreciation 375      
Wichita, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 260      
Initial cost of building and improvements 2,240      
Cost Capitalized Subsequent to Acquisition 129      
Carrying amount of land and land improvements 260      
Carrying amount of building and improvements 2,369      
Accumulated depreciation 416      
Wichita, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,400      
Initial cost of building and improvements 11,000      
Cost Capitalized Subsequent to Acquisition 456      
Carrying amount of land and land improvements 1,400      
Carrying amount of building and improvements 11,456      
Accumulated depreciation 6,185      
Wichita, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 12,038      
Initial cost of land and land improvements 630      
Initial cost of building and improvements 19,747      
Cost Capitalized Subsequent to Acquisition 315      
Carrying amount of land and land improvements 630      
Carrying amount of building and improvements 20,062      
Accumulated depreciation 4,867      
Wichita, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 900      
Initial cost of building and improvements 10,134      
Cost Capitalized Subsequent to Acquisition 123      
Carrying amount of land and land improvements 900      
Carrying amount of building and improvements 10,257      
Accumulated depreciation 2,791      
Wichita, KS | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 860      
Initial cost of building and improvements 8,873      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 860      
Carrying amount of building and improvements 8,873      
Accumulated depreciation 2,589      
Williamsburg, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,187      
Initial cost of building and improvements 5,728      
Cost Capitalized Subsequent to Acquisition 6      
Carrying amount of land and land improvements 1,187      
Carrying amount of building and improvements 5,734      
Accumulated depreciation 1,416      
Willoughby, OH | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,774      
Initial cost of building and improvements 8,653      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,774      
Carrying amount of building and improvements 8,653      
Accumulated depreciation 835      
Wilmington, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 210      
Initial cost of building and improvements 2,991      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 210      
Carrying amount of building and improvements 2,991      
Accumulated depreciation 1,771      
Wilmington, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 400      
Initial cost of building and improvements 15,355      
Cost Capitalized Subsequent to Acquisition 207      
Carrying amount of land and land improvements 400      
Carrying amount of building and improvements 15,562      
Accumulated depreciation 3,212      
Wilmington, DE | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,376      
Initial cost of building and improvements 13,450      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,376      
Carrying amount of building and improvements 13,450      
Accumulated depreciation 1,259      
Wilmington, DE | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,843      
Initial cost of building and improvements 36,948      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,843      
Carrying amount of building and improvements 36,948      
Accumulated depreciation 3,324      
Wilmington, DE | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,266      
Initial cost of building and improvements 9,500      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,266      
Carrying amount of building and improvements 9,500      
Accumulated depreciation 913      
Windsor, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,148      
Initial cost of building and improvements 6,514      
Cost Capitalized Subsequent to Acquisition 7      
Carrying amount of land and land improvements 1,148      
Carrying amount of building and improvements 6,521      
Accumulated depreciation 1,599      
Winston-Salem, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 360      
Initial cost of building and improvements 2,514      
Cost Capitalized Subsequent to Acquisition 595      
Carrying amount of land and land improvements 360      
Carrying amount of building and improvements 3,109      
Accumulated depreciation 1,475      
Winter Garden, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,110      
Initial cost of building and improvements 7,937      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,110      
Carrying amount of building and improvements 7,937      
Accumulated depreciation 2,091      
Winter Springs, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,152      
Initial cost of building and improvements 14,822      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,152      
Carrying amount of building and improvements 14,822      
Accumulated depreciation 1,372      
Witherwack, UKC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 944      
Initial cost of building and improvements 6,915      
Cost Capitalized Subsequent to Acquisition 741      
Carrying amount of land and land improvements 1,033      
Carrying amount of building and improvements 7,567      
Accumulated depreciation 1,688      
Wolverhampton, UKG | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,573      
Initial cost of building and improvements 6,678      
Cost Capitalized Subsequent to Acquisition 778      
Carrying amount of land and land improvements 1,721      
Carrying amount of building and improvements 7,308      
Accumulated depreciation 1,645      
Woodbury, MN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,317      
Initial cost of building and improvements 20,935      
Cost Capitalized Subsequent to Acquisition 298      
Carrying amount of land and land improvements 1,317      
Carrying amount of building and improvements 21,233      
Accumulated depreciation 2,886      
Woodstock, VA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 594      
Initial cost of building and improvements 5,108      
Cost Capitalized Subsequent to Acquisition 5      
Carrying amount of land and land improvements 594      
Carrying amount of building and improvements 5,113      
Accumulated depreciation 1,105      
Worcester, MA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,500      
Initial cost of building and improvements 54,099      
Cost Capitalized Subsequent to Acquisition 4      
Carrying amount of land and land improvements 3,500      
Carrying amount of building and improvements 54,103      
Accumulated depreciation 17,379      
Yardley, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 773      
Initial cost of building and improvements 14,914      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 773      
Carrying amount of building and improvements 14,914      
Accumulated depreciation 1,460      
Yardley, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,561      
Initial cost of building and improvements 9,439      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,561      
Carrying amount of building and improvements 9,439      
Accumulated depreciation 1,099      
York, UKE | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,961      
Initial cost of building and improvements 8,266      
Cost Capitalized Subsequent to Acquisition 1,058      
Carrying amount of land and land improvements 3,240      
Carrying amount of building and improvements 9,045      
Accumulated depreciation 1,736      
York, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 976      
Initial cost of building and improvements 9,354      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 976      
Carrying amount of building and improvements 9,354      
Accumulated depreciation 890      
York, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,050      
Initial cost of building and improvements 4,210      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,050      
Carrying amount of building and improvements 4,210      
Accumulated depreciation 474      
York, PA | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,121      
Initial cost of building and improvements 7,584      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,121      
Carrying amount of building and improvements 7,584      
Accumulated depreciation 771      
Youngsville, NC | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 380      
Initial cost of building and improvements 10,689      
Cost Capitalized Subsequent to Acquisition 115      
Carrying amount of land and land improvements 380      
Carrying amount of building and improvements 10,804      
Accumulated depreciation 2,177      
Zephyrhills, FL | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,131      
Initial cost of building and improvements 6,669      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,131      
Carrying amount of building and improvements 6,669      
Accumulated depreciation 712      
Zionsville, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,610      
Initial cost of building and improvements 22,400      
Cost Capitalized Subsequent to Acquisition 1,790      
Carrying amount of land and land improvements 1,610      
Carrying amount of building and improvements 24,190      
Accumulated depreciation 7,039      
Zionsville, IN | Triple-net        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,162      
Initial cost of building and improvements 33,238      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,162      
Carrying amount of building and improvements 33,238      
Accumulated depreciation $ 721