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Schedule III - Real Estate and Accumulated Depreciation - Seniors Housing (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
Seniors Housing Operating        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 1,599,522      
Initial cost of land and land improvements 1,958,208      
Initial cost of building and improvements 15,959,072      
Cost Capitalized Subsequent to Acquisition 2,969,135      
Carrying amount of land and land improvements 2,110,813      
Carrying amount of building and improvements 18,775,602      
Accumulated depreciation 4,123,782      
Seniors Housing Operating | Adderbury, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,144      
Initial cost of building and improvements 12,549      
Cost Capitalized Subsequent to Acquisition 1,003      
Carrying amount of land and land improvements 2,269      
Carrying amount of building and improvements 13,427      
Accumulated depreciation 1,874      
Seniors Housing Operating | Albertville, AL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 170      
Initial cost of building and improvements 6,203      
Cost Capitalized Subsequent to Acquisition 1,246      
Carrying amount of land and land improvements 176      
Carrying amount of building and improvements 7,443      
Accumulated depreciation 2,506      
Seniors Housing Operating | Alexandria, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 8,294      
Initial cost of building and improvements 49,673      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 8,294      
Carrying amount of building and improvements 49,673      
Accumulated depreciation 5,132      
Seniors Housing Operating | Alexandria, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 12,225      
Initial cost of building and improvements 11,823      
Cost Capitalized Subsequent to Acquisition 9,485      
Carrying amount of land and land improvements 12,225      
Carrying amount of building and improvements 21,308      
Accumulated depreciation 375      
Seniors Housing Operating | Altrincham, UKD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,244      
Initial cost of building and improvements 25,187      
Cost Capitalized Subsequent to Acquisition 3,867      
Carrying amount of land and land improvements 4,644      
Carrying amount of building and improvements 28,654      
Accumulated depreciation 8,737      
Seniors Housing Operating | Amirllo, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 719      
Initial cost of building and improvements 10,378      
Cost Capitalized Subsequent to Acquisition 1,213      
Carrying amount of land and land improvements 719      
Carrying amount of building and improvements 11,591      
Accumulated depreciation 434      
Seniors Housing Operating | Amherst, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,182      
Initial cost of building and improvements 11,413      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,182      
Carrying amount of building and improvements 11,413      
Accumulated depreciation 1,701      
Seniors Housing Operating | Amherstview, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 473      
Initial cost of building and improvements 4,446      
Cost Capitalized Subsequent to Acquisition 799      
Carrying amount of land and land improvements 526      
Carrying amount of building and improvements 5,192      
Accumulated depreciation 1,362      
Seniors Housing Operating | Anderson, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 710      
Initial cost of building and improvements 6,290      
Cost Capitalized Subsequent to Acquisition 1,474      
Carrying amount of land and land improvements 712      
Carrying amount of building and improvements 7,762      
Accumulated depreciation 4,528      
Seniors Housing Operating | Ankeny, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,129      
Initial cost of building and improvements 10,270      
Cost Capitalized Subsequent to Acquisition 322      
Carrying amount of land and land improvements 1,164      
Carrying amount of building and improvements 10,557      
Accumulated depreciation 1,809      
Seniors Housing Operating | Apple Valley, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 480      
Initial cost of building and improvements 16,639      
Cost Capitalized Subsequent to Acquisition 2,328      
Carrying amount of land and land improvements 486      
Carrying amount of building and improvements 18,961      
Accumulated depreciation 6,306      
Seniors Housing Operating | Arlington, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,660      
Initial cost of building and improvements 37,395      
Cost Capitalized Subsequent to Acquisition 4,524      
Carrying amount of land and land improvements 1,660      
Carrying amount of building and improvements 41,919      
Accumulated depreciation 13,543      
Seniors Housing Operating | Arlington, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 894      
Initial cost of building and improvements 12,351      
Cost Capitalized Subsequent to Acquisition 652      
Carrying amount of land and land improvements 894      
Carrying amount of building and improvements 13,003      
Accumulated depreciation 488      
Seniors Housing Operating | Arlington, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 8,385      
Initial cost of building and improvements 31,198      
Cost Capitalized Subsequent to Acquisition 16,488      
Carrying amount of land and land improvements 8,393      
Carrying amount of building and improvements 47,678      
Accumulated depreciation 19,621      
Seniors Housing Operating | Arlington, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 2,338      
Cost Capitalized Subsequent to Acquisition 2,529      
Carrying amount of land and land improvements 77      
Carrying amount of building and improvements 4,790      
Accumulated depreciation 987      
Seniors Housing Operating | Arnprior, ON        
SEC Schedule, 12-28, 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 6,283      
Cost Capitalized Subsequent to Acquisition 1,111      
Carrying amount of land and land improvements 862      
Carrying amount of building and improvements 7,320      
Accumulated depreciation 2,197      
Seniors Housing Operating | Athens, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 76      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 76      
Accumulated depreciation 4      
Seniors Housing Operating | Atlanta, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,058      
Initial cost of building and improvements 14,914      
Cost Capitalized Subsequent to Acquisition 4,249      
Carrying amount of land and land improvements 2,080      
Carrying amount of building and improvements 19,141      
Accumulated depreciation 13,216      
Seniors Housing Operating | Atlanta, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,100      
Initial cost of building and improvements 20,603      
Cost Capitalized Subsequent to Acquisition 2,349      
Carrying amount of land and land improvements 2,206      
Carrying amount of building and improvements 22,846      
Accumulated depreciation 6,261      
Seniors Housing Operating | Austin, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 880      
Initial cost of building and improvements 9,520      
Cost Capitalized Subsequent to Acquisition 3,188      
Carrying amount of land and land improvements 885      
Carrying amount of building and improvements 12,703      
Accumulated depreciation 7,012      
Seniors Housing Operating | Austin, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,560      
Initial cost of building and improvements 21,413      
Cost Capitalized Subsequent to Acquisition 877      
Carrying amount of land and land improvements 1,574      
Carrying amount of building and improvements 22,276      
Accumulated depreciation 4,897      
Seniors Housing Operating | Austin, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,200      
Initial cost of building and improvements 74,850      
Cost Capitalized Subsequent to Acquisition 2,231      
Carrying amount of land and land improvements 4,200      
Carrying amount of building and improvements 77,081      
Accumulated depreciation 14,607      
Seniors Housing Operating | Austin, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,832      
Initial cost of building and improvements 18,499      
Cost Capitalized Subsequent to Acquisition 2,132      
Carrying amount of land and land improvements 4,832      
Carrying amount of building and improvements 20,631      
Accumulated depreciation 514      
Seniors Housing Operating | Bagshot, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,960      
Initial cost of building and improvements 29,881      
Cost Capitalized Subsequent to Acquisition 8,287      
Carrying amount of land and land improvements 5,446      
Carrying amount of building and improvements 37,682      
Accumulated depreciation 11,738      
Seniors Housing Operating | Bakersfield, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,127      
Initial cost of building and improvements 14,334      
Cost Capitalized Subsequent to Acquisition 792      
Carrying amount of land and land improvements 1,127      
Carrying amount of building and improvements 15,126      
Accumulated depreciation 468      
Seniors Housing Operating | Ballston Spa, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,540      
Initial cost of building and improvements 17,901      
Cost Capitalized Subsequent to Acquisition 173      
Carrying amount of land and land improvements 5,540      
Carrying amount of building and improvements 18,074      
Accumulated depreciation 794      
Seniors Housing Operating | Banstead, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,695      
Initial cost of building and improvements 55,113      
Cost Capitalized Subsequent to Acquisition 13,277      
Carrying amount of land and land improvements 7,380      
Carrying amount of building and improvements 67,705      
Accumulated depreciation 20,911      
Seniors Housing Operating | Bartlesville, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,339      
Initial cost of building and improvements 10,608      
Cost Capitalized Subsequent to Acquisition 1,393      
Carrying amount of land and land improvements 2,339      
Carrying amount of building and improvements 12,001      
Accumulated depreciation 486      
Seniors Housing Operating | Basingstoke, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,420      
Initial cost of building and improvements 18,853      
Cost Capitalized Subsequent to Acquisition 2,581      
Carrying amount of land and land improvements 3,742      
Carrying amount of building and improvements 21,112      
Accumulated depreciation 4,602      
Seniors Housing Operating | Basking Ridge, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,356      
Initial cost of building and improvements 37,710      
Cost Capitalized Subsequent to Acquisition 2,657      
Carrying amount of land and land improvements 2,395      
Carrying amount of building and improvements 40,328      
Accumulated depreciation 11,280      
Seniors Housing Operating | Bassett, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,874      
Initial cost of building and improvements 32,304      
Cost Capitalized Subsequent to Acquisition 10,624      
Carrying amount of land and land improvements 5,347      
Carrying amount of building and improvements 42,455      
Accumulated depreciation 14,635      
Seniors Housing Operating | Bath, UKK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,696      
Initial cost of building and improvements 11,876      
Cost Capitalized Subsequent to Acquisition 1,160      
Carrying amount of land and land improvements 2,854      
Carrying amount of building and improvements 12,878      
Accumulated depreciation 1,802      
Seniors Housing Operating | Baton Rouge, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 12,930      
Initial cost of land and land improvements 790      
Initial cost of building and improvements 29,436      
Cost Capitalized Subsequent to Acquisition 1,648      
Carrying amount of land and land improvements 939      
Carrying amount of building and improvements 30,935      
Accumulated depreciation 8,675      
Seniors Housing Operating | Baton Rouge, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,605      
Initial cost of building and improvements 6,356      
Cost Capitalized Subsequent to Acquisition 361      
Carrying amount of land and land improvements 1,605      
Carrying amount of building and improvements 6,717      
Accumulated depreciation 270      
Seniors Housing Operating | Beaconsfield, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,566      
Initial cost of building and improvements 50,952      
Cost Capitalized Subsequent to Acquisition 6,169      
Carrying amount of land and land improvements 6,102      
Carrying amount of building and improvements 56,585      
Accumulated depreciation 15,534      
Seniors Housing Operating | Beaconsfield, QC        
SEC Schedule, 12-28, 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 17,484      
Cost Capitalized Subsequent to Acquisition 2,222      
Carrying amount of land and land improvements 1,308      
Carrying amount of building and improvements 19,547      
Accumulated depreciation 6,705      
Seniors Housing Operating | Beaver, PA,        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 2,020      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | Beavercreek, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 981      
Initial cost of building and improvements 11,210      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 981      
Carrying amount of building and improvements 11,210      
Accumulated depreciation 761      
Seniors Housing Operating | Beckenham, UKI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 21,888      
Initial cost of building and improvements 36,713      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 21,888      
Carrying amount of building and improvements 36,713      
Accumulated depreciation 202      
Seniors Housing Operating | Bee Cave, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,820      
Initial cost of building and improvements 21,084      
Cost Capitalized Subsequent to Acquisition 883      
Carrying amount of land and land improvements 1,832      
Carrying amount of building and improvements 21,955      
Accumulated depreciation 3,900      
Seniors Housing Operating | Bellevue, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,800      
Initial cost of building and improvements 19,004      
Cost Capitalized Subsequent to Acquisition 3,034      
Carrying amount of land and land improvements 2,816      
Carrying amount of building and improvements 22,022      
Accumulated depreciation 7,552      
Seniors Housing Operating | Bellevue, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,307      
Initial cost of building and improvements 9,036      
Cost Capitalized Subsequent to Acquisition 596      
Carrying amount of land and land improvements 6,307      
Carrying amount of building and improvements 9,632      
Accumulated depreciation 270      
Seniors Housing Operating | Bellevue, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 46,352      
Initial cost of building and improvements 31,794      
Cost Capitalized Subsequent to Acquisition 10,913      
Carrying amount of land and land improvements 46,352      
Carrying amount of building and improvements 42,707      
Accumulated depreciation 418      
Seniors Housing Operating | Bellingham, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,500      
Initial cost of building and improvements 19,861      
Cost Capitalized Subsequent to Acquisition 2,351      
Carrying amount of land and land improvements 1,507      
Carrying amount of building and improvements 22,205      
Accumulated depreciation 7,338      
Seniors Housing Operating | Bellingham, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,290      
Initial cost of building and improvements 16,292      
Cost Capitalized Subsequent to Acquisition 1,261      
Carrying amount of land and land improvements 1,290      
Carrying amount of building and improvements 17,553      
Accumulated depreciation 1,842      
Seniors Housing Operating | Belmont, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 35,300      
Cost Capitalized Subsequent to Acquisition 2,685      
Carrying amount of land and land improvements 178      
Carrying amount of building and improvements 37,807      
Accumulated depreciation 11,319      
Seniors Housing Operating | Berea, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,205      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | Bethel Park, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,643      
Initial cost of building and improvements 12,965      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,643      
Carrying amount of building and improvements 12,965      
Accumulated depreciation 1,294      
Seniors Housing Operating | Bethel Park, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,476      
Initial cost of building and improvements 11,635      
Cost Capitalized Subsequent to Acquisition 1,152      
Carrying amount of land and land improvements 3,476      
Carrying amount of building and improvements 12,787      
Accumulated depreciation 442      
Seniors Housing Operating | Bethesda, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 45,309      
Cost Capitalized Subsequent to Acquisition 1,607      
Carrying amount of land and land improvements 3      
Carrying amount of building and improvements 46,913      
Accumulated depreciation 13,229      
Seniors Housing Operating | Bethesda, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 69,731      
Carrying amount of land and land improvements 3,513      
Carrying amount of building and improvements 66,218      
Accumulated depreciation 4,943      
Seniors Housing Operating | Bethesda, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 45      
Cost Capitalized Subsequent to Acquisition 1,161      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,206      
Accumulated depreciation 472      
Seniors Housing Operating | Bethesda, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 212      
Cost Capitalized Subsequent to Acquisition 926      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,138      
Accumulated depreciation 803      
Seniors Housing Operating | Birmingham, UKG        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 151      
Initial cost of building and improvements 19,858      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 151      
Carrying amount of building and improvements 19,858      
Accumulated depreciation 5,322      
Seniors Housing Operating | Birmingham, UKG        
SEC Schedule, 12-28, 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 13,014      
Cost Capitalized Subsequent to Acquisition 1,739      
Carrying amount of land and land improvements 1,620      
Carrying amount of building and improvements 14,613      
Accumulated depreciation 2,069      
Seniors Housing Operating | Blainville, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,077      
Initial cost of building and improvements 8,902      
Cost Capitalized Subsequent to Acquisition 1,796      
Carrying amount of land and land improvements 2,335      
Carrying amount of building and improvements 10,440      
Accumulated depreciation 3,913      
Seniors Housing Operating | Bloomfield Hills, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,000      
Initial cost of building and improvements 35,662      
Cost Capitalized Subsequent to Acquisition 1,550      
Carrying amount of land and land improvements 2,133      
Carrying amount of building and improvements 37,079      
Accumulated depreciation 10,468      
Seniors Housing Operating | Boca Raton, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 32,270      
Initial cost of land and land improvements 6,565      
Initial cost of building and improvements 111,247      
Cost Capitalized Subsequent to Acquisition 28,777      
Carrying amount of land and land improvements 6,991      
Carrying amount of building and improvements 139,598      
Accumulated depreciation 32,618      
Seniors Housing Operating | Boise, ID        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,391      
Initial cost of building and improvements 16,067      
Cost Capitalized Subsequent to Acquisition 5,535      
Carrying amount of land and land improvements 2,220      
Carrying amount of building and improvements 20,773      
Accumulated depreciation 3,535      
Seniors Housing Operating | Boise, ID        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,625      
Initial cost of building and improvements 9,547      
Cost Capitalized Subsequent to Acquisition 921      
Carrying amount of land and land improvements 1,625      
Carrying amount of building and improvements 10,468      
Accumulated depreciation 305      
Seniors Housing Operating | Borehamwood, UKH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,367      
Initial cost of building and improvements 41,937      
Cost Capitalized Subsequent to Acquisition 5,435      
Carrying amount of land and land improvements 5,912      
Carrying amount of building and improvements 46,827      
Accumulated depreciation 13,810      
Seniors Housing Operating | Bothell, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,350      
Initial cost of building and improvements 13,439      
Cost Capitalized Subsequent to Acquisition 7,063      
Carrying amount of land and land improvements 1,350      
Carrying amount of building and improvements 20,502      
Accumulated depreciation 5,500      
Seniors Housing Operating | Boulder, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,994      
Initial cost of building and improvements 27,458      
Cost Capitalized Subsequent to Acquisition 3,010      
Carrying amount of land and land improvements 3,150      
Carrying amount of building and improvements 30,312      
Accumulated depreciation 10,239      
Seniors Housing Operating | Bournemouth, UKK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,527      
Initial cost of building and improvements 42,547      
Cost Capitalized Subsequent to Acquisition 6,007      
Carrying amount of land and land improvements 6,070      
Carrying amount of building and improvements 48,011      
Accumulated depreciation 13,670      
Seniors Housing Operating | Bradenton, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,664      
Initial cost of building and improvements 10,136      
Cost Capitalized Subsequent to Acquisition 1,066      
Carrying amount of land and land improvements 4,664      
Carrying amount of building and improvements 11,202      
Accumulated depreciation 254      
Seniors Housing Operating | Braintree, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 41,290      
Cost Capitalized Subsequent to Acquisition 1,614      
Carrying amount of land and land improvements 100      
Carrying amount of building and improvements 42,804      
Accumulated depreciation 12,364      
Seniors Housing Operating | Brampton, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 46,020      
Initial cost of land and land improvements 10,196      
Initial cost of building and improvements 59,989      
Cost Capitalized Subsequent to Acquisition 5,546      
Carrying amount of land and land improvements 10,885      
Carrying amount of building and improvements 64,846      
Accumulated depreciation 16,071      
Seniors Housing Operating | Brandon, MS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,220      
Initial cost of building and improvements 10,241      
Cost Capitalized Subsequent to Acquisition 2,118      
Carrying amount of land and land improvements 1,220      
Carrying amount of building and improvements 12,359      
Accumulated depreciation 3,360      
Seniors Housing Operating | Bremerton, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,417      
Initial cost of building and improvements 22,627      
Cost Capitalized Subsequent to Acquisition 1,825      
Carrying amount of land and land improvements 2,417      
Carrying amount of building and improvements 24,452      
Accumulated depreciation 2,226      
Seniors Housing Operating | Bremerton, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,145      
Initial cost of building and improvements 6,200      
Cost Capitalized Subsequent to Acquisition 1,088      
Carrying amount of land and land improvements 2,145      
Carrying amount of building and improvements 7,288      
Accumulated depreciation 493      
Seniors Housing Operating | Brentwood, UKH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 8,537      
Initial cost of building and improvements 45,869      
Cost Capitalized Subsequent to Acquisition 6,303      
Carrying amount of land and land improvements 9,342      
Carrying amount of building and improvements 51,367      
Accumulated depreciation 7,297      
Seniors Housing Operating | Brick, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,170      
Initial cost of building and improvements 17,372      
Cost Capitalized Subsequent to Acquisition 1,957      
Carrying amount of land and land improvements 1,218      
Carrying amount of building and improvements 19,281      
Accumulated depreciation 5,996      
Seniors Housing Operating | Brick, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 690      
Initial cost of building and improvements 17,125      
Cost Capitalized Subsequent to Acquisition 6,200      
Carrying amount of land and land improvements 695      
Carrying amount of building and improvements 23,320      
Accumulated depreciation 6,055      
Seniors Housing Operating | Bridgewater, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,730      
Initial cost of building and improvements 48,201      
Cost Capitalized Subsequent to Acquisition 3,108      
Carrying amount of land and land improvements 1,774      
Carrying amount of building and improvements 51,265      
Accumulated depreciation 14,647      
Seniors Housing Operating | Brockport, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,500      
Initial cost of building and improvements 23,496      
Cost Capitalized Subsequent to Acquisition 621      
Carrying amount of land and land improvements 1,642      
Carrying amount of building and improvements 23,975      
Accumulated depreciation 5,765      
Seniors Housing Operating | Brockville, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,142      
Initial cost of land and land improvements 484      
Initial cost of building and improvements 7,445      
Cost Capitalized Subsequent to Acquisition 1,312      
Carrying amount of land and land improvements 532      
Carrying amount of building and improvements 8,709      
Accumulated depreciation 1,982      
Seniors Housing Operating | Broken Arrow, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 39      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 39      
Accumulated depreciation 2      
Seniors Housing Operating | Brookfield, WI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,300      
Initial cost of building and improvements 12,830      
Cost Capitalized Subsequent to Acquisition 361      
Carrying amount of land and land improvements 1,300      
Carrying amount of building and improvements 13,191      
Accumulated depreciation 2,904      
Seniors Housing Operating | Broomfield, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,140      
Initial cost of building and improvements 44,547      
Cost Capitalized Subsequent to Acquisition 15,299      
Carrying amount of land and land improvements 10,140      
Carrying amount of building and improvements 53,846      
Accumulated depreciation 23,208      
Seniors Housing Operating | Brossard, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,674      
Initial cost of land and land improvements 5,499      
Initial cost of building and improvements 31,854      
Cost Capitalized Subsequent to Acquisition 3,788      
Carrying amount of land and land improvements 5,802      
Carrying amount of building and improvements 35,339      
Accumulated depreciation 9,920      
Seniors Housing Operating | Buckingham, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,979      
Initial cost of building and improvements 13,880      
Cost Capitalized Subsequent to Acquisition 2,361      
Carrying amount of land and land improvements 3,302      
Carrying amount of building and improvements 15,918      
Accumulated depreciation 3,555      
Seniors Housing Operating | Buffalo Grove, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,850      
Initial cost of building and improvements 49,129      
Cost Capitalized Subsequent to Acquisition 4,771      
Carrying amount of land and land improvements 2,850      
Carrying amount of building and improvements 53,900      
Accumulated depreciation 15,467      
Seniors Housing Operating | Burbank, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,940      
Initial cost of building and improvements 43,466      
Cost Capitalized Subsequent to Acquisition 5,651      
Carrying amount of land and land improvements 4,940      
Carrying amount of building and improvements 49,117      
Accumulated depreciation 14,714      
Seniors Housing Operating | Burbank, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 18,070      
Initial cost of land and land improvements 3,610      
Initial cost of building and improvements 50,817      
Cost Capitalized Subsequent to Acquisition 4,423      
Carrying amount of land and land improvements 3,610      
Carrying amount of building and improvements 55,240      
Accumulated depreciation 9,995      
Seniors Housing Operating | Burke, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 52,686      
Carrying amount of land and land improvements 2,616      
Carrying amount of building and improvements 50,070      
Accumulated depreciation 3,810      
Seniors Housing Operating | Burleson, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,150      
Initial cost of building and improvements 10,437      
Cost Capitalized Subsequent to Acquisition 723      
Carrying amount of land and land improvements 3,150      
Carrying amount of building and improvements 11,160      
Accumulated depreciation 2,305      
Seniors Housing Operating | Burlingame, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 62,786      
Cost Capitalized Subsequent to Acquisition 231      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 63,017      
Accumulated depreciation 10,427      
Seniors Housing Operating | Burlington, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 16,974      
Initial cost of land and land improvements 1,309      
Initial cost of building and improvements 19,311      
Cost Capitalized Subsequent to Acquisition 2,801      
Carrying amount of land and land improvements 1,431      
Carrying amount of building and improvements 21,990      
Accumulated depreciation 6,253      
Seniors Housing Operating | Burlington, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,443      
Initial cost of building and improvements 34,354      
Cost Capitalized Subsequent to Acquisition 1,730      
Carrying amount of land and land improvements 2,578      
Carrying amount of building and improvements 35,949      
Accumulated depreciation 10,975      
Seniors Housing Operating | Burlington, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 877      
Initial cost of building and improvements 15,986      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 877      
Carrying amount of building and improvements 15,986      
Accumulated depreciation 2,359      
Seniors Housing Operating | Burlington, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 768      
Initial cost of building and improvements 8,268      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 768      
Carrying amount of building and improvements 8,268      
Accumulated depreciation 1,391      
Seniors Housing Operating | Bushey, UKH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 12,690      
Initial cost of building and improvements 36,482      
Cost Capitalized Subsequent to Acquisition 3,196      
Carrying amount of land and land improvements 13,433      
Carrying amount of building and improvements 38,935      
Accumulated depreciation 4,088      
Seniors Housing Operating | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 10,339      
Initial cost of land and land improvements 2,252      
Initial cost of building and improvements 37,415      
Cost Capitalized Subsequent to Acquisition 4,627      
Carrying amount of land and land improvements 2,477      
Carrying amount of building and improvements 41,817      
Accumulated depreciation 12,235      
Seniors Housing Operating | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,644      
Initial cost of land and land improvements 2,793      
Initial cost of building and improvements 41,179      
Cost Capitalized Subsequent to Acquisition 4,708      
Carrying amount of land and land improvements 3,044      
Carrying amount of building and improvements 45,636      
Accumulated depreciation 13,164      
Seniors Housing Operating | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,301      
Initial cost of land and land improvements 3,122      
Initial cost of building and improvements 38,971      
Cost Capitalized Subsequent to Acquisition 5,127      
Carrying amount of land and land improvements 3,446      
Carrying amount of building and improvements 43,774      
Accumulated depreciation 12,411      
Seniors Housing Operating | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 20,268      
Initial cost of land and land improvements 3,431      
Initial cost of building and improvements 28,983      
Cost Capitalized Subsequent to Acquisition 4,473      
Carrying amount of land and land improvements 3,711      
Carrying amount of building and improvements 33,176      
Accumulated depreciation 8,833      
Seniors Housing Operating | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 23,968      
Initial cost of land and land improvements 2,385      
Initial cost of building and improvements 36,776      
Cost Capitalized Subsequent to Acquisition 5,797      
Carrying amount of land and land improvements 2,590      
Carrying amount of building and improvements 42,368      
Accumulated depreciation 8,723      
Seniors Housing Operating | Camberley, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 9,974      
Initial cost of building and improvements 39,168      
Cost Capitalized Subsequent to Acquisition 3,242      
Carrying amount of land and land improvements 10,557      
Carrying amount of building and improvements 41,827      
Accumulated depreciation 5,253      
Seniors Housing Operating | Camberley, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,654      
Initial cost of building and improvements 5,736      
Cost Capitalized Subsequent to Acquisition 19,840      
Carrying amount of land and land improvements 5,877      
Carrying amount of building and improvements 22,353      
Accumulated depreciation 3,301      
Seniors Housing Operating | Camillus, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,249      
Initial cost of building and improvements 7,360      
Cost Capitalized Subsequent to Acquisition 5,401      
Carrying amount of land and land improvements 2,082      
Carrying amount of building and improvements 11,928      
Accumulated depreciation 1,830      
Seniors Housing Operating | Cardiff, UKL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,191      
Initial cost of building and improvements 12,566      
Cost Capitalized Subsequent to Acquisition 4,153      
Carrying amount of land and land improvements 3,668      
Carrying amount of building and improvements 16,242      
Accumulated depreciation 5,267      
Seniors Housing Operating | Cardiff by the Sea, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 34,123      
Initial cost of land and land improvements 5,880      
Initial cost of building and improvements 64,711      
Cost Capitalized Subsequent to Acquisition 6,249      
Carrying amount of land and land improvements 5,880      
Carrying amount of building and improvements 70,960      
Accumulated depreciation 22,681      
Seniors Housing Operating | Carmel, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,766      
Initial cost of building and improvements 50,326      
Cost Capitalized Subsequent to Acquisition 3,093      
Carrying amount of land and land improvements 2,766      
Carrying amount of building and improvements 53,419      
Accumulated depreciation 225      
Seniors Housing Operating | Carmichael, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 23,708      
Initial cost of land and land improvements 739      
Initial cost of building and improvements 7,698      
Cost Capitalized Subsequent to Acquisition 37,589      
Carrying amount of land and land improvements 2,440      
Carrying amount of building and improvements 43,586      
Accumulated depreciation 4,385      
Seniors Housing Operating | Carol Stream, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,730      
Initial cost of building and improvements 55,048      
Cost Capitalized Subsequent to Acquisition 4,951      
Carrying amount of land and land improvements 1,730      
Carrying amount of building and improvements 59,999      
Accumulated depreciation 17,754      
Seniors Housing Operating | Carrollton, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,280      
Initial cost of building and improvements 31,444      
Cost Capitalized Subsequent to Acquisition 1,658      
Carrying amount of land and land improvements 4,280      
Carrying amount of building and improvements 33,102      
Accumulated depreciation 6,998      
Seniors Housing Operating | Carrollton, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,537      
Initial cost of building and improvements 8,183      
Cost Capitalized Subsequent to Acquisition 976      
Carrying amount of land and land improvements 2,537      
Carrying amount of building and improvements 9,159      
Accumulated depreciation 548      
Seniors Housing Operating | Carson City, NV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,601      
Initial cost of building and improvements 22,159      
Cost Capitalized Subsequent to Acquisition 1,383      
Carrying amount of land and land improvements 1,601      
Carrying amount of building and improvements 23,542      
Accumulated depreciation 615      
Seniors Housing Operating | Cary, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 740      
Initial cost of building and improvements 45,240      
Cost Capitalized Subsequent to Acquisition 1,168      
Carrying amount of land and land improvements 742      
Carrying amount of building and improvements 46,406      
Accumulated depreciation 11,968      
Seniors Housing Operating | Cary, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,112      
Initial cost of building and improvements 70,008      
Cost Capitalized Subsequent to Acquisition 10,589      
Carrying amount of land and land improvements 6,155      
Carrying amount of building and improvements 80,554      
Accumulated depreciation 16,202      
Seniors Housing Operating | Cedar Falls, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,259      
Initial cost of building and improvements 9,188      
Cost Capitalized Subsequent to Acquisition 742      
Carrying amount of land and land improvements 1,259      
Carrying amount of building and improvements 9,930      
Accumulated depreciation 344      
Seniors Housing Operating | Cedar Hill, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,971      
Initial cost of building and improvements 24,590      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,971      
Carrying amount of building and improvements 24,590      
Accumulated depreciation 855      
Seniors Housing Operating | Cedar Park, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,750      
Initial cost of building and improvements 15,664      
Cost Capitalized Subsequent to Acquisition 950      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 16,614      
Accumulated depreciation 2,534      
Seniors Housing Operating | Cerritos, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 27,494      
Cost Capitalized Subsequent to Acquisition 7,263      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 34,757      
Accumulated depreciation 9,712      
Seniors Housing Operating | Charleston, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 552      
Initial cost of building and improvements 740      
Cost Capitalized Subsequent to Acquisition 70      
Carrying amount of land and land improvements 552      
Carrying amount of building and improvements 810      
Accumulated depreciation 120      
Seniors Housing Operating | Charleston, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,912      
Initial cost of building and improvements 18,935      
Cost Capitalized Subsequent to Acquisition 882      
Carrying amount of land and land improvements 2,912      
Carrying amount of building and improvements 19,817      
Accumulated depreciation 498      
Seniors Housing Operating | Charlotte, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,279      
Initial cost of building and improvements 17,582      
Cost Capitalized Subsequent to Acquisition 1,743      
Carrying amount of land and land improvements 5,279      
Carrying amount of building and improvements 19,325      
Accumulated depreciation 681      
Seniors Housing Operating | Charlottesville, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,651      
Initial cost of building and improvements 91,468      
Cost Capitalized Subsequent to Acquisition 21,158      
Carrying amount of land and land improvements 4,831      
Carrying amount of building and improvements 112,446      
Accumulated depreciation 21,386      
Seniors Housing Operating | Chatham, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 77      
Initial cost of land and land improvements 1,098      
Initial cost of building and improvements 12,462      
Cost Capitalized Subsequent to Acquisition 4,327      
Carrying amount of land and land improvements 1,270      
Carrying amount of building and improvements 16,617      
Accumulated depreciation 4,259      
Seniors Housing Operating | Chattanooga, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,373      
Initial cost of building and improvements 14,108      
Cost Capitalized Subsequent to Acquisition 1,683      
Carrying amount of land and land improvements 3,373      
Carrying amount of building and improvements 15,791      
Accumulated depreciation 598      
Seniors Housing Operating | Chelmsford, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,040      
Initial cost of building and improvements 10,951      
Cost Capitalized Subsequent to Acquisition 6,221      
Carrying amount of land and land improvements 1,131      
Carrying amount of building and improvements 17,081      
Accumulated depreciation 5,975      
Seniors Housing Operating | Chelmsford, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,364      
Initial cost of building and improvements 31,460      
Cost Capitalized Subsequent to Acquisition 1,683      
Carrying amount of land and land improvements 2,364      
Carrying amount of building and improvements 33,143      
Accumulated depreciation 840      
Seniors Housing Operating | Chertsey, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 9,566      
Initial cost of building and improvements 25,886      
Cost Capitalized Subsequent to Acquisition 3,954      
Carrying amount of land and land improvements 10,125      
Carrying amount of building and improvements 29,281      
Accumulated depreciation 3,624      
Seniors Housing Operating | Chesapeake, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,214      
Initial cost of building and improvements 20,472      
Cost Capitalized Subsequent to Acquisition 2,094      
Carrying amount of land and land improvements 2,214      
Carrying amount of building and improvements 22,566      
Accumulated depreciation 760      
Seniors Housing Operating | Chesterfield, MO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,857      
Initial cost of building and improvements 48,366      
Cost Capitalized Subsequent to Acquisition 2,023      
Carrying amount of land and land improvements 1,917      
Carrying amount of building and improvements 50,329      
Accumulated depreciation 13,645      
Seniors Housing Operating | Chesterton, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,980      
Initial cost of building and improvements 37,614      
Cost Capitalized Subsequent to Acquisition 1,246      
Carrying amount of land and land improvements 2,980      
Carrying amount of building and improvements 38,860      
Accumulated depreciation 2,603      
Seniors Housing Operating | Chico, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,780      
Initial cost of building and improvements 13,201      
Cost Capitalized Subsequent to Acquisition 1,553      
Carrying amount of land and land improvements 1,780      
Carrying amount of building and improvements 14,754      
Accumulated depreciation 557      
Seniors Housing Operating | Chorleywood, UKH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,636      
Initial cost of building and improvements 43,191      
Cost Capitalized Subsequent to Acquisition 7,738      
Carrying amount of land and land improvements 6,194      
Carrying amount of building and improvements 50,371      
Accumulated depreciation 16,297      
Seniors Housing Operating | Chula Vista, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,072      
Initial cost of building and improvements 22,163      
Cost Capitalized Subsequent to Acquisition 1,650      
Carrying amount of land and land improvements 2,186      
Carrying amount of building and improvements 23,699      
Accumulated depreciation 6,973      
Seniors Housing Operating | Chula Vista, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,217      
Initial cost of building and improvements 29,986      
Cost Capitalized Subsequent to Acquisition 1,880      
Carrying amount of land and land improvements 4,217      
Carrying amount of building and improvements 31,866      
Accumulated depreciation 1,350      
Seniors Housing Operating | Church Crookham, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,591      
Initial cost of building and improvements 14,215      
Cost Capitalized Subsequent to Acquisition 2,307      
Carrying amount of land and land improvements 2,855      
Carrying amount of building and improvements 16,258      
Accumulated depreciation 4,334      
Seniors Housing Operating | Cincinnati, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,750      
Initial cost of building and improvements 11,366      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 11,366      
Accumulated depreciation 1,091      
Seniors Housing Operating | Cincinnati, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,606      
Initial cost of building and improvements 2,958      
Cost Capitalized Subsequent to Acquisition 1,036      
Carrying amount of land and land improvements 1,606      
Carrying amount of building and improvements 3,994      
Accumulated depreciation 579      
Seniors Housing Operating | Cincinnati, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,345      
Initial cost of building and improvements 46,717      
Cost Capitalized Subsequent to Acquisition 6,150      
Carrying amount of land and land improvements 3,345      
Carrying amount of building and improvements 52,867      
Accumulated depreciation 953      
Seniors Housing Operating | Citrus Heights, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,300      
Initial cost of building and improvements 31,876      
Cost Capitalized Subsequent to Acquisition 3,193      
Carrying amount of land and land improvements 2,300      
Carrying amount of building and improvements 35,069      
Accumulated depreciation 11,820      
Seniors Housing Operating | Clackamas, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,240      
Initial cost of building and improvements 3,581      
Cost Capitalized Subsequent to Acquisition 339      
Carrying amount of land and land improvements 1,240      
Carrying amount of building and improvements 3,920      
Accumulated depreciation 502      
Seniors Housing Operating | Claremont, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,430      
Initial cost of building and improvements 9,928      
Cost Capitalized Subsequent to Acquisition 2,230      
Carrying amount of land and land improvements 2,553      
Carrying amount of building and improvements 12,035      
Accumulated depreciation 4,104      
Seniors Housing Operating | Clay, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,371      
Initial cost of building and improvements 11,471      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,371      
Carrying amount of building and improvements 11,471      
Accumulated depreciation 1,724      
Seniors Housing Operating | Clearwater, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,727      
Initial cost of building and improvements 4,542      
Cost Capitalized Subsequent to Acquisition 361      
Carrying amount of land and land improvements 1,727      
Carrying amount of building and improvements 4,903      
Accumulated depreciation 230      
Seniors Housing Operating | Cleburne, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 520      
Initial cost of building and improvements 5,369      
Cost Capitalized Subsequent to Acquisition 319      
Carrying amount of land and land improvements 520      
Carrying amount of building and improvements 5,688      
Accumulated depreciation 2,119      
Seniors Housing Operating | Cohasset, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,485      
Initial cost of building and improvements 26,147      
Cost Capitalized Subsequent to Acquisition 2,421      
Carrying amount of land and land improvements 2,500      
Carrying amount of building and improvements 28,553      
Accumulated depreciation 8,639      
Seniors Housing Operating | Colleyville, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,050      
Initial cost of building and improvements 17,082      
Cost Capitalized Subsequent to Acquisition 84      
Carrying amount of land and land improvements 1,050      
Carrying amount of building and improvements 17,166      
Accumulated depreciation 2,313      
Seniors Housing Operating | Colorado Springs, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 800      
Initial cost of building and improvements 14,756      
Cost Capitalized Subsequent to Acquisition 2,269      
Carrying amount of land and land improvements 1,034      
Carrying amount of building and improvements 16,791      
Accumulated depreciation 5,352      
Seniors Housing Operating | Colorado Springs, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,142      
Initial cost of building and improvements 14,147      
Cost Capitalized Subsequent to Acquisition 1,363      
Carrying amount of land and land improvements 1,142      
Carrying amount of building and improvements 15,510      
Accumulated depreciation 521      
Seniors Housing Operating | Colts Neck, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 780      
Initial cost of building and improvements 14,733      
Cost Capitalized Subsequent to Acquisition 3,594      
Carrying amount of land and land improvements 1,463      
Carrying amount of building and improvements 17,644      
Accumulated depreciation 5,481      
Seniors Housing Operating | Columbus, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 610      
Initial cost of building and improvements 3,190      
Cost Capitalized Subsequent to Acquisition 209      
Carrying amount of land and land improvements 610      
Carrying amount of building and improvements 3,399      
Accumulated depreciation 1,048      
Seniors Housing Operating | Columbus, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,593      
Initial cost of building and improvements 10,953      
Cost Capitalized Subsequent to Acquisition 1,233      
Carrying amount of land and land improvements 1,593      
Carrying amount of building and improvements 12,186      
Accumulated depreciation 453      
Seniors Housing Operating | Columbus, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements (3)      
Initial cost of building and improvements 36      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements (3)      
Carrying amount of building and improvements 36      
Accumulated depreciation 2      
Seniors Housing Operating | Conroe, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 980      
Initial cost of building and improvements 7,771      
Cost Capitalized Subsequent to Acquisition 408      
Carrying amount of land and land improvements 980      
Carrying amount of building and improvements 8,179      
Accumulated depreciation 2,670      
Seniors Housing Operating | Coos Bay, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 864      
Initial cost of building and improvements 7,971      
Cost Capitalized Subsequent to Acquisition 719      
Carrying amount of land and land improvements 864      
Carrying amount of building and improvements 8,690      
Accumulated depreciation 1,073      
Seniors Housing Operating | Coos Bay, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,792      
Initial cost of building and improvements 9,852      
Cost Capitalized Subsequent to Acquisition 1,004      
Carrying amount of land and land improvements 1,792      
Carrying amount of building and improvements 10,856      
Accumulated depreciation 1,346      
Seniors Housing Operating | Coquitlam, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,163      
Initial cost of land and land improvements 3,047      
Initial cost of building and improvements 24,567      
Cost Capitalized Subsequent to Acquisition 3,447      
Carrying amount of land and land improvements 3,337      
Carrying amount of building and improvements 27,724      
Accumulated depreciation 9,074      
Seniors Housing Operating | Crystal Lake, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 875      
Initial cost of building and improvements 12,461      
Cost Capitalized Subsequent to Acquisition 2,284      
Carrying amount of land and land improvements 971      
Carrying amount of building and improvements 14,649      
Accumulated depreciation 4,855      
Seniors Housing Operating | Crystal Lake, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,678      
Initial cost of building and improvements 31,875      
Cost Capitalized Subsequent to Acquisition 7,996      
Carrying amount of land and land improvements 7,678      
Carrying amount of building and improvements 39,871      
Accumulated depreciation 314      
Seniors Housing Operating | Dallas, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,330      
Initial cost of building and improvements 114,794      
Cost Capitalized Subsequent to Acquisition 3,420      
Carrying amount of land and land improvements 6,330      
Carrying amount of building and improvements 118,214      
Accumulated depreciation 23,567      
Seniors Housing Operating | Dana Point, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,508      
Initial cost of building and improvements 51,522      
Cost Capitalized Subsequent to Acquisition 2,844      
Carrying amount of land and land improvements 5,508      
Carrying amount of building and improvements 54,366      
Accumulated depreciation 268      
Seniors Housing Operating | Danville, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,236      
Initial cost of building and improvements 28,738      
Cost Capitalized Subsequent to Acquisition 19      
Carrying amount of land and land improvements 2,236      
Carrying amount of building and improvements 28,757      
Accumulated depreciation 73      
Seniors Housing Operating | Dardenne Prairie, MO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,309      
Initial cost of building and improvements 11,271      
Cost Capitalized Subsequent to Acquisition 236      
Carrying amount of land and land improvements 1,309      
Carrying amount of building and improvements 11,507      
Accumulated depreciation 292      
Seniors Housing Operating | Decatur, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,098      
Initial cost of building and improvements 13,067      
Cost Capitalized Subsequent to Acquisition 2,235      
Carrying amount of land and land improvements 1,098      
Carrying amount of building and improvements 15,302      
Accumulated depreciation 548      
Seniors Housing Operating | Decatur, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 31,583      
Carrying amount of land and land improvements 1,946      
Carrying amount of building and improvements 29,637      
Accumulated depreciation 9,096      
Seniors Housing Operating | Denver, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,450      
Initial cost of building and improvements 19,389      
Cost Capitalized Subsequent to Acquisition 5,386      
Carrying amount of land and land improvements 1,450      
Carrying amount of building and improvements 24,775      
Accumulated depreciation 6,526      
Seniors Housing Operating | Denver, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,910      
Initial cost of building and improvements 35,838      
Cost Capitalized Subsequent to Acquisition 8,036      
Carrying amount of land and land improvements 2,910      
Carrying amount of building and improvements 43,874      
Accumulated depreciation 12,921      
Seniors Housing Operating | Denver, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,533      
Initial cost of building and improvements 9,221      
Cost Capitalized Subsequent to Acquisition 108,783      
Carrying amount of land and land improvements 5,402      
Carrying amount of building and improvements 114,135      
Accumulated depreciation 15,517      
Seniors Housing Operating | Denver, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,989      
Initial cost of building and improvements 21,556      
Cost Capitalized Subsequent to Acquisition 1,039      
Carrying amount of land and land improvements 1,989      
Carrying amount of building and improvements 22,595      
Accumulated depreciation 1,782      
Seniors Housing Operating | Des Moines, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,196      
Initial cost of building and improvements 8,847      
Cost Capitalized Subsequent to Acquisition 782      
Carrying amount of land and land improvements 1,196      
Carrying amount of building and improvements 9,629      
Accumulated depreciation 329      
Seniors Housing Operating | Dix Hills, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,808      
Initial cost of building and improvements 39,014      
Cost Capitalized Subsequent to Acquisition 2,592      
Carrying amount of land and land improvements 4,092      
Carrying amount of building and improvements 41,322      
Accumulated depreciation 12,177      
Seniors Housing Operating | Dollard-Des-Ormeaux, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,957      
Initial cost of building and improvements 14,431      
Cost Capitalized Subsequent to Acquisition 2,186      
Carrying amount of land and land improvements 2,181      
Carrying amount of building and improvements 16,393      
Accumulated depreciation 6,357      
Seniors Housing Operating | Dresher, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,380      
Initial cost of land and land improvements 1,900      
Initial cost of building and improvements 10,664      
Cost Capitalized Subsequent to Acquisition 1,575      
Carrying amount of land and land improvements 1,914      
Carrying amount of building and improvements 12,225      
Accumulated depreciation 4,779      
Seniors Housing Operating | Dublin, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,169      
Initial cost of building and improvements 25,345      
Cost Capitalized Subsequent to Acquisition 173      
Carrying amount of land and land improvements 1,169      
Carrying amount of building and improvements 25,518      
Accumulated depreciation 4,560      
Seniors Housing Operating | Durham, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,212      
Initial cost of building and improvements 22,108      
Cost Capitalized Subsequent to Acquisition 1,242      
Carrying amount of land and land improvements 3,212      
Carrying amount of building and improvements 23,350      
Accumulated depreciation 638      
Seniors Housing Operating | East Amherst, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,638      
Initial cost of building and improvements 11,677      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,638      
Carrying amount of building and improvements 11,677      
Accumulated depreciation 1,871      
Seniors Housing Operating | East Lansing, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,919      
Initial cost of building and improvements 17,509      
Cost Capitalized Subsequent to Acquisition 1,864      
Carrying amount of land and land improvements 3,919      
Carrying amount of building and improvements 19,373      
Accumulated depreciation 712      
Seniors Housing Operating | East Meadow, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 69      
Initial cost of building and improvements 45,991      
Cost Capitalized Subsequent to Acquisition 2,184      
Carrying amount of land and land improvements 127      
Carrying amount of building and improvements 48,117      
Accumulated depreciation 13,856      
Seniors Housing Operating | East Setauket, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,920      
Initial cost of building and improvements 37,354      
Cost Capitalized Subsequent to Acquisition 2,274      
Carrying amount of land and land improvements 4,986      
Carrying amount of building and improvements 39,562      
Accumulated depreciation 11,527      
Seniors Housing Operating | Eastbourne, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,145      
Initial cost of building and improvements 33,744      
Cost Capitalized Subsequent to Acquisition 4,369      
Carrying amount of land and land improvements 4,549      
Carrying amount of building and improvements 37,709      
Accumulated depreciation 11,167      
Seniors Housing Operating | Edgbaston, UKG        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,720      
Initial cost of building and improvements 13,969      
Cost Capitalized Subsequent to Acquisition 1,959      
Carrying amount of land and land improvements 2,977      
Carrying amount of building and improvements 15,671      
Accumulated depreciation 2,248      
Seniors Housing Operating | Edgewater, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,561      
Initial cost of building and improvements 25,047      
Cost Capitalized Subsequent to Acquisition 2,452      
Carrying amount of land and land improvements 4,564      
Carrying amount of building and improvements 27,496      
Accumulated depreciation 8,235      
Seniors Housing Operating | Edison, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,892      
Initial cost of building and improvements 32,314      
Cost Capitalized Subsequent to Acquisition 4,007      
Carrying amount of land and land improvements 1,993      
Carrying amount of building and improvements 36,220      
Accumulated depreciation 12,648      
Seniors Housing Operating | Edmonds, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,650      
Initial cost of building and improvements 24,449      
Cost Capitalized Subsequent to Acquisition 10,016      
Carrying amount of land and land improvements 1,650      
Carrying amount of building and improvements 34,465      
Accumulated depreciation 7,191      
Seniors Housing Operating | Edmonds, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,891      
Initial cost of building and improvements 26,413      
Cost Capitalized Subsequent to Acquisition 1,775      
Carrying amount of land and land improvements 2,891      
Carrying amount of building and improvements 28,188      
Accumulated depreciation 2,254      
Seniors Housing Operating | Edmonton, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,373      
Initial cost of land and land improvements 1,589      
Initial cost of building and improvements 29,819      
Cost Capitalized Subsequent to Acquisition 4,145      
Carrying amount of land and land improvements 1,778      
Carrying amount of building and improvements 33,775      
Accumulated depreciation 10,131      
Seniors Housing Operating | Edmonton, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,717      
Initial cost of land and land improvements 2,063      
Initial cost of building and improvements 37,293      
Cost Capitalized Subsequent to Acquisition 5,066      
Carrying amount of land and land improvements 2,253      
Carrying amount of building and improvements 42,169      
Accumulated depreciation 14,233      
Seniors Housing Operating | Effingham, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 606      
Initial cost of building and improvements 3,437      
Cost Capitalized Subsequent to Acquisition 262      
Carrying amount of land and land improvements 606      
Carrying amount of building and improvements 3,699      
Accumulated depreciation 327      
Seniors Housing Operating | Effingham, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 105      
Initial cost of building and improvements 336      
Cost Capitalized Subsequent to Acquisition 124      
Carrying amount of land and land improvements 105      
Carrying amount of building and improvements 460      
Accumulated depreciation 77      
Seniors Housing Operating | El Dorado Hills, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 57,020      
Carrying amount of land and land improvements 5,190      
Carrying amount of building and improvements 51,830      
Accumulated depreciation 3,348      
Seniors Housing Operating | Encino, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,040      
Initial cost of building and improvements 46,255      
Cost Capitalized Subsequent to Acquisition 6,801      
Carrying amount of land and land improvements 5,040      
Carrying amount of building and improvements 53,056      
Accumulated depreciation 15,509      
Seniors Housing Operating | Englishtown, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 690      
Initial cost of building and improvements 12,520      
Cost Capitalized Subsequent to Acquisition 2,488      
Carrying amount of land and land improvements 860      
Carrying amount of building and improvements 14,838      
Accumulated depreciation 4,933      
Seniors Housing Operating | Epsom, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 20,159      
Initial cost of building and improvements 34,803      
Cost Capitalized Subsequent to Acquisition 6,407      
Carrying amount of land and land improvements 22,059      
Carrying amount of building and improvements 39,310      
Accumulated depreciation 5,692      
Seniors Housing Operating | Erie, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,460      
Initial cost of building and improvements 9,162      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,460      
Carrying amount of building and improvements 9,162      
Accumulated depreciation 1,596      
Seniors Housing Operating | Esher, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,783      
Initial cost of building and improvements 48,361      
Cost Capitalized Subsequent to Acquisition 9,596      
Carrying amount of land and land improvements 6,350      
Carrying amount of building and improvements 57,390      
Accumulated depreciation 16,445      
Seniors Housing Operating | Evans, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,211      
Initial cost of building and improvements 17,217      
Cost Capitalized Subsequent to Acquisition 3,286      
Carrying amount of land and land improvements 3,211      
Carrying amount of building and improvements 20,503      
Accumulated depreciation 783      
Seniors Housing Operating | Evansville, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,038      
Initial cost of building and improvements 10,570      
Cost Capitalized Subsequent to Acquisition 1,413      
Carrying amount of land and land improvements 1,038      
Carrying amount of building and improvements 11,983      
Accumulated depreciation 475      
Seniors Housing Operating | Everett, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 638      
Initial cost of building and improvements 8,708      
Cost Capitalized Subsequent to Acquisition 697      
Carrying amount of land and land improvements 638      
Carrying amount of building and improvements 9,405      
Accumulated depreciation 1,025      
Seniors Housing Operating | Everett, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,912      
Initial cost of building and improvements 14,773      
Cost Capitalized Subsequent to Acquisition 1,874      
Carrying amount of land and land improvements 1,912      
Carrying amount of building and improvements 16,647      
Accumulated depreciation 549      
Seniors Housing Operating | Fairfield, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,120      
Initial cost of building and improvements 43,868      
Cost Capitalized Subsequent to Acquisition 2,514      
Carrying amount of land and land improvements 3,255      
Carrying amount of building and improvements 46,247      
Accumulated depreciation 13,407      
Seniors Housing Operating | Fairfield, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 561      
Initial cost of building and improvements 3,773      
Cost Capitalized Subsequent to Acquisition 222      
Carrying amount of land and land improvements 561      
Carrying amount of building and improvements 3,995      
Accumulated depreciation 319      
Seniors Housing Operating | Fairfield, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,460      
Initial cost of building and improvements 14,040      
Cost Capitalized Subsequent to Acquisition 7,062      
Carrying amount of land and land improvements 1,460      
Carrying amount of building and improvements 21,102      
Accumulated depreciation 8,669      
Seniors Housing Operating | Fairfield, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,416      
Initial cost of building and improvements 12,933      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,416      
Carrying amount of building and improvements 12,933      
Accumulated depreciation 1,393      
Seniors Housing Operating | Fareham, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,408      
Initial cost of building and improvements 17,970      
Cost Capitalized Subsequent to Acquisition 2,634      
Carrying amount of land and land improvements 3,755      
Carrying amount of building and improvements 20,257      
Accumulated depreciation 4,952      
Seniors Housing Operating | Florence, AL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 353      
Initial cost of building and improvements 13,049      
Cost Capitalized Subsequent to Acquisition 1,628      
Carrying amount of land and land improvements 385      
Carrying amount of building and improvements 14,645      
Accumulated depreciation 4,839      
Seniors Housing Operating | Flossmoor, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,292      
Initial cost of building and improvements 9,496      
Cost Capitalized Subsequent to Acquisition 3,054      
Carrying amount of land and land improvements 1,362      
Carrying amount of building and improvements 12,480      
Accumulated depreciation 4,425      
Seniors Housing Operating | Folsom, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,490      
Initial cost of building and improvements 32,754      
Cost Capitalized Subsequent to Acquisition 185      
Carrying amount of land and land improvements 1,490      
Carrying amount of building and improvements 32,939      
Accumulated depreciation 7,011      
Seniors Housing Operating | Folsom, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,306      
Initial cost of building and improvements 10,159      
Cost Capitalized Subsequent to Acquisition 789      
Carrying amount of land and land improvements 2,306      
Carrying amount of building and improvements 10,948      
Accumulated depreciation 580      
Seniors Housing Operating | Fort Smith, AR        
SEC Schedule, 12-28, 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 74      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 74      
Accumulated depreciation 2      
Seniors Housing Operating | Fort Wayne, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,637      
Initial cost of building and improvements 42,242      
Cost Capitalized Subsequent to Acquisition 729      
Carrying amount of land and land improvements 3,637      
Carrying amount of building and improvements 42,971      
Accumulated depreciation 2,188      
Seniors Housing Operating | Fort Worth, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,179      
Initial cost of building and improvements 40,328      
Cost Capitalized Subsequent to Acquisition 17,804      
Carrying amount of land and land improvements 7,131      
Carrying amount of building and improvements 55,180      
Accumulated depreciation 6,998      
Seniors Housing Operating | Fort Worth, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,538      
Initial cost of building and improvements 18,909      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,538      
Carrying amount of building and improvements 18,909      
Accumulated depreciation 1,157      
Seniors Housing Operating | Fort Worth, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,080      
Initial cost of building and improvements 27,888      
Cost Capitalized Subsequent to Acquisition 6,373      
Carrying amount of land and land improvements 2,080      
Carrying amount of building and improvements 34,261      
Accumulated depreciation 11,106      
Seniors Housing Operating | Fort Worth, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,740      
Initial cost of building and improvements 19,799      
Cost Capitalized Subsequent to Acquisition 857      
Carrying amount of land and land improvements 1,740      
Carrying amount of building and improvements 20,656      
Accumulated depreciation 3,605      
Seniors Housing Operating | Franklin, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,733      
Initial cost of building and improvements 13,653      
Cost Capitalized Subsequent to Acquisition 1,784      
Carrying amount of land and land improvements 5,733      
Carrying amount of building and improvements 15,437      
Accumulated depreciation 553      
Seniors Housing Operating | Fremont, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,400      
Initial cost of building and improvements 25,300      
Cost Capitalized Subsequent to Acquisition 6,354      
Carrying amount of land and land improvements 3,456      
Carrying amount of building and improvements 31,598      
Accumulated depreciation 12,971      
Seniors Housing Operating | Fresno, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 22,982      
Initial cost of land and land improvements 896      
Initial cost of building and improvements 10,591      
Cost Capitalized Subsequent to Acquisition 25,532      
Carrying amount of land and land improvements 2,459      
Carrying amount of building and improvements 34,560      
Accumulated depreciation 3,827      
Seniors Housing Operating | Fresno, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 25      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 25      
Accumulated depreciation 1      
Seniors Housing Operating | Frome, UKK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,720      
Initial cost of building and improvements 14,813      
Cost Capitalized Subsequent to Acquisition 2,415      
Carrying amount of land and land improvements 2,977      
Carrying amount of building and improvements 16,971      
Accumulated depreciation 3,828      
Seniors Housing Operating | Fullerton, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,964      
Initial cost of building and improvements 19,989      
Cost Capitalized Subsequent to Acquisition 1,696      
Carrying amount of land and land improvements 1,998      
Carrying amount of building and improvements 21,651      
Accumulated depreciation 6,517      
Seniors Housing Operating | Fullerton, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,801      
Initial cost of building and improvements 5,878      
Cost Capitalized Subsequent to Acquisition 317      
Carrying amount of land and land improvements 1,801      
Carrying amount of building and improvements 6,195      
Accumulated depreciation 349      
Seniors Housing Operating | Gahanna, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 772      
Initial cost of building and improvements 11,214      
Cost Capitalized Subsequent to Acquisition 2,117      
Carrying amount of land and land improvements 847      
Carrying amount of building and improvements 13,256      
Accumulated depreciation 4,166      
Seniors Housing Operating | Gahanna, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 26      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 26      
Accumulated depreciation 2      
Seniors Housing Operating | Gainesville, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,908      
Initial cost of building and improvements 25,082      
Cost Capitalized Subsequent to Acquisition 1,954      
Carrying amount of land and land improvements 1,908      
Carrying amount of building and improvements 27,036      
Accumulated depreciation 797      
Seniors Housing Operating | Garden Grove, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,107      
Initial cost of building and improvements 3,990      
Cost Capitalized Subsequent to Acquisition 559      
Carrying amount of land and land improvements 2,107      
Carrying amount of building and improvements 4,549      
Accumulated depreciation 409      
Seniors Housing Operating | Gardnerville, NV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,143      
Initial cost of building and improvements 10,831      
Cost Capitalized Subsequent to Acquisition 3,137      
Carrying amount of land and land improvements 1,164      
Carrying amount of building and improvements 13,947      
Accumulated depreciation 9,630      
Seniors Housing Operating | Gig Harbor, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,560      
Initial cost of building and improvements 15,947      
Cost Capitalized Subsequent to Acquisition 3,537      
Carrying amount of land and land improvements 1,583      
Carrying amount of building and improvements 19,461      
Accumulated depreciation 5,978      
Seniors Housing Operating | Gilbert, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,200      
Initial cost of land and land improvements 2,160      
Initial cost of building and improvements 28,246      
Cost Capitalized Subsequent to Acquisition 2,405      
Carrying amount of land and land improvements 2,206      
Carrying amount of building and improvements 30,605      
Accumulated depreciation 10,990      
Seniors Housing Operating | Glen Cove, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,594      
Initial cost of building and improvements 35,236      
Cost Capitalized Subsequent to Acquisition 2,634      
Carrying amount of land and land improvements 4,688      
Carrying amount of building and improvements 37,776      
Accumulated depreciation 12,588      
Seniors Housing Operating | Glendale, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,114      
Initial cost of building and improvements 24,668      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,114      
Carrying amount of building and improvements 24,668      
Accumulated depreciation 424      
Seniors Housing Operating | Glenview, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,090      
Initial cost of building and improvements 69,288      
Cost Capitalized Subsequent to Acquisition 5,809      
Carrying amount of land and land improvements 2,090      
Carrying amount of building and improvements 75,097      
Accumulated depreciation 22,200      
Seniors Housing Operating | Golden Valley, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 3,600      
Initial cost of land and land improvements 1,520      
Initial cost of building and improvements 33,513      
Cost Capitalized Subsequent to Acquisition 1,771      
Carrying amount of land and land improvements 1,634      
Carrying amount of building and improvements 35,170      
Accumulated depreciation 9,968      
Seniors Housing Operating | Granbury, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,040      
Initial cost of building and improvements 30,670      
Cost Capitalized Subsequent to Acquisition 784      
Carrying amount of land and land improvements 2,040      
Carrying amount of building and improvements 31,454      
Accumulated depreciation 8,936      
Seniors Housing Operating | Grand Forks, ND        
SEC Schedule, 12-28, 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 12,463      
Cost Capitalized Subsequent to Acquisition 684      
Carrying amount of land and land improvements 1,050      
Carrying amount of building and improvements 13,147      
Accumulated depreciation 476      
Seniors Housing Operating | Grand Prairie, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,880      
Initial cost of building and improvements 23,827      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,880      
Carrying amount of building and improvements 23,827      
Accumulated depreciation 371      
Seniors Housing Operating | Grand Rapids, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,179      
Initial cost of building and improvements 14,693      
Cost Capitalized Subsequent to Acquisition 1,052      
Carrying amount of land and land improvements 2,179      
Carrying amount of building and improvements 15,745      
Accumulated depreciation 486      
Seniors Housing Operating | Grants Pass, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 561      
Initial cost of building and improvements 8,603      
Cost Capitalized Subsequent to Acquisition 271      
Carrying amount of land and land improvements 561      
Carrying amount of building and improvements 8,874      
Accumulated depreciation 243      
Seniors Housing Operating | Greenville, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 893      
Initial cost of building and improvements 21,242      
Cost Capitalized Subsequent to Acquisition 1,553      
Carrying amount of land and land improvements 893      
Carrying amount of building and improvements 22,795      
Accumulated depreciation 659      
Seniors Housing Operating | Greenville, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 41      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 41      
Accumulated depreciation 1      
Seniors Housing Operating | Gresham, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,966      
Initial cost of building and improvements 6,255      
Cost Capitalized Subsequent to Acquisition 311      
Carrying amount of land and land improvements 1,966      
Carrying amount of building and improvements 6,566      
Accumulated depreciation 178      
Seniors Housing Operating | Grimsby, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 636      
Initial cost of building and improvements 5,617      
Cost Capitalized Subsequent to Acquisition 997      
Carrying amount of land and land improvements 693      
Carrying amount of building and improvements 6,557      
Accumulated depreciation 1,630      
Seniors Housing Operating | Grosse Pointe Woods, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 950      
Initial cost of building and improvements 13,662      
Cost Capitalized Subsequent to Acquisition 1,010      
Carrying amount of land and land improvements 950      
Carrying amount of building and improvements 14,672      
Accumulated depreciation 4,137      
Seniors Housing Operating | Grosse Pointe Woods, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,430      
Initial cost of building and improvements 31,777      
Cost Capitalized Subsequent to Acquisition 1,391      
Carrying amount of land and land improvements 1,435      
Carrying amount of building and improvements 33,163      
Accumulated depreciation 9,273      
Seniors Housing Operating | Grove City, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,575      
Initial cost of building and improvements 85,764      
Cost Capitalized Subsequent to Acquisition 1,889      
Carrying amount of land and land improvements 3,509      
Carrying amount of building and improvements 87,719      
Accumulated depreciation 8,921      
Seniors Housing Operating | Grove City, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,099      
Initial cost of building and improvements 4,781      
Cost Capitalized Subsequent to Acquisition 465      
Carrying amount of land and land improvements 1,099      
Carrying amount of building and improvements 5,246      
Accumulated depreciation 431      
Seniors Housing Operating | Guildford, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,361      
Initial cost of building and improvements 56,494      
Cost Capitalized Subsequent to Acquisition 6,478      
Carrying amount of land and land improvements 5,870      
Carrying amount of building and improvements 62,463      
Accumulated depreciation 17,299      
Seniors Housing Operating | Gurnee, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 890      
Initial cost of building and improvements 27,931      
Cost Capitalized Subsequent to Acquisition 2,750      
Carrying amount of land and land improvements 945      
Carrying amount of building and improvements 30,626      
Accumulated depreciation 8,578      
Seniors Housing Operating | Haddonfield, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 520      
Initial cost of building and improvements 16,363      
Cost Capitalized Subsequent to Acquisition 709      
Carrying amount of land and land improvements 527      
Carrying amount of building and improvements 17,065      
Accumulated depreciation 3,385      
Seniors Housing Operating | Hamburg, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 971      
Initial cost of building and improvements 10,909      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 971      
Carrying amount of building and improvements 10,909      
Accumulated depreciation 1,687      
Seniors Housing Operating | Hamilton, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,128      
Initial cost of building and improvements 10,940      
Cost Capitalized Subsequent to Acquisition 1,067      
Carrying amount of land and land improvements 1,163      
Carrying amount of building and improvements 11,972      
Accumulated depreciation 1,446      
Seniors Housing Operating | Hampshire, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,172      
Initial cost of building and improvements 26,035      
Cost Capitalized Subsequent to Acquisition 3,420      
Carrying amount of land and land improvements 4,577      
Carrying amount of building and improvements 29,050      
Accumulated depreciation 8,434      
Seniors Housing Operating | Happy Valley, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 721      
Initial cost of building and improvements 10,369      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 721      
Carrying amount of building and improvements 10,369      
Accumulated depreciation 1,398      
Seniors Housing Operating | Harrisburg, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 858      
Initial cost of building and improvements 4,623      
Cost Capitalized Subsequent to Acquisition 317      
Carrying amount of land and land improvements 858      
Carrying amount of building and improvements 4,940      
Accumulated depreciation 462      
Seniors Housing Operating | Haverford, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,880      
Initial cost of building and improvements 33,993      
Cost Capitalized Subsequent to Acquisition 2,934      
Carrying amount of land and land improvements 1,907      
Carrying amount of building and improvements 36,900      
Accumulated depreciation 10,476      
Seniors Housing Operating | Helena, MT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,850      
Initial cost of building and improvements 17,091      
Cost Capitalized Subsequent to Acquisition 1,954      
Carrying amount of land and land improvements 1,850      
Carrying amount of building and improvements 19,045      
Accumulated depreciation 842      
Seniors Housing Operating | Hemet, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,877      
Initial cost of building and improvements 8,946      
Cost Capitalized Subsequent to Acquisition 542      
Carrying amount of land and land improvements 1,877      
Carrying amount of building and improvements 9,488      
Accumulated depreciation 335      
Seniors Housing Operating | Henderson, NV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,190      
Initial cost of building and improvements 11,600      
Cost Capitalized Subsequent to Acquisition 1,311      
Carrying amount of land and land improvements 1,298      
Carrying amount of building and improvements 12,803      
Accumulated depreciation 4,887      
Seniors Housing Operating | Hermitage, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,084      
Initial cost of building and improvements 14,196      
Cost Capitalized Subsequent to Acquisition 1,253      
Carrying amount of land and land improvements 1,084      
Carrying amount of building and improvements 15,449      
Accumulated depreciation 497      
Seniors Housing Operating | Hickory, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,600      
Initial cost of building and improvements 26,405      
Cost Capitalized Subsequent to Acquisition 2,014      
Carrying amount of land and land improvements 1,600      
Carrying amount of building and improvements 28,419      
Accumulated depreciation 842      
Seniors Housing Operating | High Point, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,355      
Initial cost of building and improvements 19,751      
Cost Capitalized Subsequent to Acquisition 1,984      
Carrying amount of land and land improvements 1,355      
Carrying amount of building and improvements 21,735      
Accumulated depreciation 736      
Seniors Housing Operating | High Wycombe, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,567      
Initial cost of building and improvements 13,422      
Cost Capitalized Subsequent to Acquisition 1,566      
Carrying amount of land and land improvements 3,776      
Carrying amount of building and improvements 14,779      
Accumulated depreciation 2,024      
Seniors Housing Operating | Highland Park, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,820      
Initial cost of building and improvements 15,832      
Cost Capitalized Subsequent to Acquisition 1,149      
Carrying amount of land and land improvements 2,820      
Carrying amount of building and improvements 16,981      
Accumulated depreciation 4,093      
Seniors Housing Operating | Highland Park, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,250      
Initial cost of building and improvements 25,313      
Cost Capitalized Subsequent to Acquisition 1,677      
Carrying amount of land and land improvements 2,271      
Carrying amount of building and improvements 26,969      
Accumulated depreciation 8,746      
Seniors Housing Operating | Hindhead, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 17,852      
Initial cost of building and improvements 48,645      
Cost Capitalized Subsequent to Acquisition 7,655      
Carrying amount of land and land improvements 19,535      
Carrying amount of building and improvements 54,617      
Accumulated depreciation 7,751      
Seniors Housing Operating | Hingham, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,440      
Initial cost of building and improvements 32,292      
Cost Capitalized Subsequent to Acquisition 506      
Carrying amount of land and land improvements 1,444      
Carrying amount of building and improvements 32,794      
Accumulated depreciation 7,071      
Seniors Housing Operating | Holbrook, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,957      
Initial cost of building and improvements 35,337      
Cost Capitalized Subsequent to Acquisition 2,843      
Carrying amount of land and land improvements 4,219      
Carrying amount of building and improvements 37,918      
Accumulated depreciation 10,892      
Seniors Housing Operating | Honolulu, HI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 22,918      
Initial cost of building and improvements 49,662      
Cost Capitalized Subsequent to Acquisition 6,384      
Carrying amount of land and land improvements 22,918      
Carrying amount of building and improvements 56,046      
Accumulated depreciation 1,602      
Seniors Housing Operating | Hoover, AL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,165      
Initial cost of building and improvements 16,059      
Cost Capitalized Subsequent to Acquisition 1,984      
Carrying amount of land and land improvements 2,165      
Carrying amount of building and improvements 18,043      
Accumulated depreciation 605      
Seniors Housing Operating | Horley, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,332      
Initial cost of building and improvements 12,144      
Cost Capitalized Subsequent to Acquisition 2,243      
Carrying amount of land and land improvements 2,560      
Carrying amount of building and improvements 14,159      
Accumulated depreciation 3,820      
Seniors Housing Operating | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,830      
Initial cost of building and improvements 55,674      
Cost Capitalized Subsequent to Acquisition 10,039      
Carrying amount of land and land improvements 3,830      
Carrying amount of building and improvements 65,713      
Accumulated depreciation 20,771      
Seniors Housing Operating | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,040      
Initial cost of building and improvements 31,965      
Cost Capitalized Subsequent to Acquisition 6,984      
Carrying amount of land and land improvements 1,040      
Carrying amount of building and improvements 38,949      
Accumulated depreciation 10,763      
Seniors Housing Operating | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,750      
Initial cost of building and improvements 15,603      
Cost Capitalized Subsequent to Acquisition 1,707      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 17,310      
Accumulated depreciation 2,851      
Seniors Housing Operating | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 960      
Initial cost of building and improvements 15,550      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 960      
Carrying amount of building and improvements 15,550      
Accumulated depreciation 9,286      
Seniors Housing Operating | Howell, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,066      
Initial cost of building and improvements 21,577      
Cost Capitalized Subsequent to Acquisition 1,685      
Carrying amount of land and land improvements 1,154      
Carrying amount of building and improvements 23,174      
Accumulated depreciation 6,879      
Seniors Housing Operating | Huntington Beach, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,808      
Initial cost of building and improvements 31,172      
Cost Capitalized Subsequent to Acquisition 3,194      
Carrying amount of land and land improvements 3,931      
Carrying amount of building and improvements 34,243      
Accumulated depreciation 11,450      
Seniors Housing Operating | Independence, MO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,562      
Initial cost of building and improvements 14,452      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,562      
Carrying amount of building and improvements 14,452      
Accumulated depreciation 1,558      
Seniors Housing Operating | Independence, MO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,230      
Initial cost of building and improvements 20,425      
Cost Capitalized Subsequent to Acquisition 4,157      
Carrying amount of land and land improvements 3,230      
Carrying amount of building and improvements 24,582      
Accumulated depreciation 184      
Seniors Housing Operating | Iowa City, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 891      
Initial cost of building and improvements 5,680      
Cost Capitalized Subsequent to Acquisition 331      
Carrying amount of land and land improvements 891      
Carrying amount of building and improvements 6,011      
Accumulated depreciation 197      
Seniors Housing Operating | Jackson, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,370      
Initial cost of building and improvements 11,317      
Cost Capitalized Subsequent to Acquisition 1,173      
Carrying amount of land and land improvements 1,370      
Carrying amount of building and improvements 12,490      
Accumulated depreciation 401      
Seniors Housing Operating | Jacksonville, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,205      
Initial cost of building and improvements 11,991      
Cost Capitalized Subsequent to Acquisition 22,939      
Carrying amount of land and land improvements 6,550      
Carrying amount of building and improvements 29,585      
Accumulated depreciation 2,704      
Seniors Housing Operating | Johns Creek, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,580      
Initial cost of building and improvements 23,285      
Cost Capitalized Subsequent to Acquisition 1,624      
Carrying amount of land and land improvements 1,588      
Carrying amount of building and improvements 24,901      
Accumulated depreciation 7,211      
Seniors Housing Operating | Johnson City, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,440      
Initial cost of building and improvements 11,675      
Cost Capitalized Subsequent to Acquisition 1,124      
Carrying amount of land and land improvements 1,421      
Carrying amount of building and improvements 12,818      
Accumulated depreciation 1,959      
Seniors Housing Operating | Kalamazoo, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,531      
Initial cost of building and improvements 37,252      
Cost Capitalized Subsequent to Acquisition 8,794      
Carrying amount of land and land improvements 7,531      
Carrying amount of building and improvements 46,046      
Accumulated depreciation 412      
Seniors Housing Operating | Kanata, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,689      
Initial cost of building and improvements 28,670      
Cost Capitalized Subsequent to Acquisition 2,574      
Carrying amount of land and land improvements 1,775      
Carrying amount of building and improvements 31,158      
Accumulated depreciation 9,271      
Seniors Housing Operating | Kelowna, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,654      
Initial cost of land and land improvements 2,688      
Initial cost of building and improvements 13,647      
Cost Capitalized Subsequent to Acquisition 2,781      
Carrying amount of land and land improvements 2,939      
Carrying amount of building and improvements 16,177      
Accumulated depreciation 5,285      
Seniors Housing Operating | Kennebunk, ME        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,700      
Initial cost of building and improvements 30,204      
Cost Capitalized Subsequent to Acquisition 6,063      
Carrying amount of land and land improvements 3,394      
Carrying amount of building and improvements 35,573      
Accumulated depreciation 15,813      
Seniors Housing Operating | Kenner, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,100      
Initial cost of building and improvements 10,036      
Cost Capitalized Subsequent to Acquisition 3,889      
Carrying amount of land and land improvements 1,100      
Carrying amount of building and improvements 13,925      
Accumulated depreciation 10,932      
Seniors Housing Operating | Kenner, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 809      
Initial cost of building and improvements 11,820      
Cost Capitalized Subsequent to Acquisition 524      
Carrying amount of land and land improvements 809      
Carrying amount of building and improvements 12,344      
Accumulated depreciation 298      
Seniors Housing Operating | Kennett Square, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,050      
Initial cost of building and improvements 22,946      
Cost Capitalized Subsequent to Acquisition 981      
Carrying amount of land and land improvements 1,104      
Carrying amount of building and improvements 23,873      
Accumulated depreciation 6,811      
Seniors Housing Operating | Kingston, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,587      
Initial cost of land and land improvements 1,030      
Initial cost of building and improvements 11,416      
Cost Capitalized Subsequent to Acquisition 2,424      
Carrying amount of land and land improvements 1,445      
Carrying amount of building and improvements 13,425      
Accumulated depreciation 2,877      
Seniors Housing Operating | Kingston upon Thames, UKI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 33,063      
Initial cost of building and improvements 46,696      
Cost Capitalized Subsequent to Acquisition 8,683      
Carrying amount of land and land improvements 36,180      
Carrying amount of building and improvements 52,262      
Accumulated depreciation 7,315      
Seniors Housing Operating | Kingwood, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 480      
Initial cost of building and improvements 9,777      
Cost Capitalized Subsequent to Acquisition 1,086      
Carrying amount of land and land improvements 480      
Carrying amount of building and improvements 10,863      
Accumulated depreciation 3,485      
Seniors Housing Operating | Kingwood, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,683      
Initial cost of building and improvements 24,207      
Cost Capitalized Subsequent to Acquisition 2,500      
Carrying amount of land and land improvements 1,683      
Carrying amount of building and improvements 26,707      
Accumulated depreciation 5,262      
Seniors Housing Operating | Kirkland, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,880      
Initial cost of building and improvements 4,315      
Cost Capitalized Subsequent to Acquisition 2,404      
Carrying amount of land and land improvements 1,880      
Carrying amount of building and improvements 6,719      
Accumulated depreciation 2,656      
Seniors Housing Operating | Kitchener, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,360      
Initial cost of land and land improvements 1,341      
Initial cost of building and improvements 13,939      
Cost Capitalized Subsequent to Acquisition 5,281      
Carrying amount of land and land improvements 1,495      
Carrying amount of building and improvements 19,066      
Accumulated depreciation 4,706      
Seniors Housing Operating | Klamath Falls, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,335      
Initial cost of building and improvements 10,174      
Cost Capitalized Subsequent to Acquisition 1,500      
Carrying amount of land and land improvements 1,335      
Carrying amount of building and improvements 11,674      
Accumulated depreciation 1,530      
Seniors Housing Operating | La Palma, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,950      
Initial cost of building and improvements 16,591      
Cost Capitalized Subsequent to Acquisition 1,422      
Carrying amount of land and land improvements 2,996      
Carrying amount of building and improvements 17,967      
Accumulated depreciation 5,494      
Seniors Housing Operating | Lackawanna, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,029      
Initial cost of building and improvements 5,815      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,029      
Carrying amount of building and improvements 5,815      
Accumulated depreciation 1,033      
Seniors Housing Operating | Lafayette Hill, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,750      
Initial cost of building and improvements 11,848      
Cost Capitalized Subsequent to Acquisition 2,542      
Carrying amount of land and land improvements 1,867      
Carrying amount of building and improvements 14,273      
Accumulated depreciation 5,548      
Seniors Housing Operating | Laguna Hills, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 12,820      
Initial cost of building and improvements 75,926      
Cost Capitalized Subsequent to Acquisition 20,060      
Carrying amount of land and land improvements 12,820      
Carrying amount of building and improvements 95,986      
Accumulated depreciation 24,934      
Seniors Housing Operating | Laguna Woods, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 11,280      
Initial cost of building and improvements 76,485      
Cost Capitalized Subsequent to Acquisition 13,614      
Carrying amount of land and land improvements 11,280      
Carrying amount of building and improvements 90,099      
Accumulated depreciation 21,498      
Seniors Housing Operating | Laguna Woods, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 9,150      
Initial cost of building and improvements 57,842      
Cost Capitalized Subsequent to Acquisition 12,772      
Carrying amount of land and land improvements 9,150      
Carrying amount of building and improvements 70,614      
Accumulated depreciation 17,105      
Seniors Housing Operating | Lake Havascu City, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 364      
Initial cost of building and improvements 1,599      
Cost Capitalized Subsequent to Acquisition 225      
Carrying amount of land and land improvements 364      
Carrying amount of building and improvements 1,824      
Accumulated depreciation 355      
Seniors Housing Operating | Lake Zurich, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,470      
Initial cost of building and improvements 9,830      
Cost Capitalized Subsequent to Acquisition 3,045      
Carrying amount of land and land improvements 1,470      
Carrying amount of building and improvements 12,875      
Accumulated depreciation 5,205      
Seniors Housing Operating | Lakeland, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,416      
Initial cost of building and improvements 18,028      
Cost Capitalized Subsequent to Acquisition 1,763      
Carrying amount of land and land improvements 2,416      
Carrying amount of building and improvements 19,791      
Accumulated depreciation 667      
Seniors Housing Operating | Lancaster, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 700      
Initial cost of building and improvements 15,295      
Cost Capitalized Subsequent to Acquisition 2,532      
Carrying amount of land and land improvements 712      
Carrying amount of building and improvements 17,815      
Accumulated depreciation 6,340      
Seniors Housing Operating | Lancaster, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 289      
Initial cost of building and improvements 1,975      
Cost Capitalized Subsequent to Acquisition 102      
Carrying amount of land and land improvements 289      
Carrying amount of building and improvements 2,077      
Accumulated depreciation 140      
Seniors Housing Operating | Lancaster, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,029      
Initial cost of building and improvements 7,069      
Cost Capitalized Subsequent to Acquisition 630      
Carrying amount of land and land improvements 1,029      
Carrying amount of building and improvements 7,699      
Accumulated depreciation 507      
Seniors Housing Operating | Lancaster, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,262      
Initial cost of building and improvements 12,181      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,262      
Carrying amount of building and improvements 12,181      
Accumulated depreciation 1,999      
Seniors Housing Operating | Las Vegas, NV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,908      
Initial cost of building and improvements 36,955      
Cost Capitalized Subsequent to Acquisition 4,213      
Carrying amount of land and land improvements 5,908      
Carrying amount of building and improvements 41,168      
Accumulated depreciation 5,193      
Seniors Housing Operating | Las Vegas, NV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,274      
Initial cost of building and improvements 13,748      
Cost Capitalized Subsequent to Acquisition 540      
Carrying amount of land and land improvements 1,274      
Carrying amount of building and improvements 14,288      
Accumulated depreciation 1,357      
Seniors Housing Operating | Las Vegas, NV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,412      
Initial cost of building and improvements 22,045      
Cost Capitalized Subsequent to Acquisition 1,424      
Carrying amount of land and land improvements 2,412      
Carrying amount of building and improvements 23,469      
Accumulated depreciation 2,750      
Seniors Housing Operating | Laval, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 21,048      
Initial cost of land and land improvements 2,105      
Initial cost of building and improvements 32,161      
Cost Capitalized Subsequent to Acquisition 6,585      
Carrying amount of land and land improvements 2,246      
Carrying amount of building and improvements 38,605      
Accumulated depreciation 6,850      
Seniors Housing Operating | Laval, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 3,943      
Initial cost of land and land improvements 2,383      
Initial cost of building and improvements 5,968      
Cost Capitalized Subsequent to Acquisition 1,932      
Carrying amount of land and land improvements 2,544      
Carrying amount of building and improvements 7,739      
Accumulated depreciation 1,306      
Seniors Housing Operating | Lawrenceville, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,500      
Initial cost of building and improvements 29,003      
Cost Capitalized Subsequent to Acquisition 1,031      
Carrying amount of land and land improvements 1,529      
Carrying amount of building and improvements 30,005      
Accumulated depreciation 8,828      
Seniors Housing Operating | Lawrenceville, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,513      
Initial cost of building and improvements 23,081      
Cost Capitalized Subsequent to Acquisition 1,092      
Carrying amount of land and land improvements 3,513      
Carrying amount of building and improvements 24,173      
Accumulated depreciation 596      
Seniors Housing Operating | Leatherhead, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,682      
Initial cost of building and improvements 17,835      
Cost Capitalized Subsequent to Acquisition 2,292      
Carrying amount of land and land improvements 4,956      
Carrying amount of building and improvements 19,853      
Accumulated depreciation 2,579      
Seniors Housing Operating | Leawood, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,490      
Initial cost of building and improvements 32,493      
Cost Capitalized Subsequent to Acquisition 7,318      
Carrying amount of land and land improvements 5,610      
Carrying amount of building and improvements 36,691      
Accumulated depreciation 11,196      
Seniors Housing Operating | Lenexa, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,700      
Initial cost of land and land improvements 826      
Initial cost of building and improvements 26,251      
Cost Capitalized Subsequent to Acquisition 1,652      
Carrying amount of land and land improvements 927      
Carrying amount of building and improvements 27,802      
Accumulated depreciation 8,758      
Seniors Housing Operating | Lexington, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,843      
Initial cost of building and improvements 14,519      
Cost Capitalized Subsequent to Acquisition 782      
Carrying amount of land and land improvements 1,843      
Carrying amount of building and improvements 15,301      
Accumulated depreciation 428      
Seniors Housing Operating | Lincoln, NE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 390      
Initial cost of building and improvements 13,807      
Cost Capitalized Subsequent to Acquisition 393      
Carrying amount of land and land improvements 390      
Carrying amount of building and improvements 14,200      
Accumulated depreciation 4,263      
Seniors Housing Operating | Lincoln, NE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 884      
Initial cost of building and improvements 9,915      
Cost Capitalized Subsequent to Acquisition 722      
Carrying amount of land and land improvements 884      
Carrying amount of building and improvements 10,637      
Accumulated depreciation 329      
Seniors Housing Operating | Lincroft, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 9      
Initial cost of building and improvements 19,958      
Cost Capitalized Subsequent to Acquisition 1,976      
Carrying amount of land and land improvements 148      
Carrying amount of building and improvements 21,795      
Accumulated depreciation 6,656      
Seniors Housing Operating | Linwood, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 800      
Initial cost of building and improvements 21,984      
Cost Capitalized Subsequent to Acquisition 2,382      
Carrying amount of land and land improvements 870      
Carrying amount of building and improvements 24,296      
Accumulated depreciation 7,152      
Seniors Housing Operating | Litchfield, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,240      
Initial cost of building and improvements 17,908      
Cost Capitalized Subsequent to Acquisition 12,051      
Carrying amount of land and land improvements 1,308      
Carrying amount of building and improvements 29,891      
Accumulated depreciation 7,354      
Seniors Housing Operating | Little Neck, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,350      
Initial cost of building and improvements 38,461      
Cost Capitalized Subsequent to Acquisition 3,921      
Carrying amount of land and land improvements 3,358      
Carrying amount of building and improvements 42,374      
Accumulated depreciation 12,068      
Seniors Housing Operating | Livingston, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 8,000      
Initial cost of building and improvements 44,424      
Cost Capitalized Subsequent to Acquisition 1,776      
Carrying amount of land and land improvements 8,040      
Carrying amount of building and improvements 46,160      
Accumulated depreciation 6,676      
Seniors Housing Operating | Lombard, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 17,010      
Initial cost of land and land improvements 2,130      
Initial cost of building and improvements 59,943      
Cost Capitalized Subsequent to Acquisition 2,055      
Carrying amount of land and land improvements 2,218      
Carrying amount of building and improvements 61,910      
Accumulated depreciation 17,480      
Seniors Housing Operating | London, UKI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,121      
Initial cost of building and improvements 10,027      
Cost Capitalized Subsequent to Acquisition 2,367      
Carrying amount of land and land improvements 3,430      
Carrying amount of building and improvements 12,085      
Accumulated depreciation 2,940      
Seniors Housing Operating | London, UKI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,691      
Initial cost of building and improvements 16,797      
Cost Capitalized Subsequent to Acquisition 2,106      
Carrying amount of land and land improvements 8,141      
Carrying amount of building and improvements 18,453      
Accumulated depreciation 2,850      
Seniors Housing Operating | London, UKI        
SEC Schedule, 12-28, 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 77,131      
Carrying amount of land and land improvements 24,542      
Carrying amount of building and improvements 52,589      
Accumulated depreciation 2,600      
Seniors Housing Operating | London, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 10,558      
Initial cost of land and land improvements 1,969      
Initial cost of building and improvements 16,985      
Cost Capitalized Subsequent to Acquisition 3,292      
Carrying amount of land and land improvements 2,137      
Carrying amount of building and improvements 20,109      
Accumulated depreciation 4,742      
Seniors Housing Operating | London, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,445      
Initial cost of building and improvements 13,631      
Cost Capitalized Subsequent to Acquisition 2,391      
Carrying amount of land and land improvements 1,694      
Carrying amount of building and improvements 15,773      
Accumulated depreciation 3,529      
Seniors Housing Operating | Longmont, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,756      
Initial cost of building and improvements 10,572      
Cost Capitalized Subsequent to Acquisition 1,253      
Carrying amount of land and land improvements 1,756      
Carrying amount of building and improvements 11,825      
Accumulated depreciation 465      
Seniors Housing Operating | Longueuil, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,405      
Initial cost of land and land improvements 3,992      
Initial cost of building and improvements 23,711      
Cost Capitalized Subsequent to Acquisition 5,233      
Carrying amount of land and land improvements 4,403      
Carrying amount of building and improvements 28,533      
Accumulated depreciation 7,153      
Seniors Housing Operating | Longview, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 610      
Initial cost of building and improvements 5,520      
Cost Capitalized Subsequent to Acquisition 446      
Carrying amount of land and land improvements 610      
Carrying amount of building and improvements 5,966      
Accumulated depreciation 2,187      
Seniors Housing Operating | Lorain, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,397      
Initial cost of building and improvements 13,005      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,397      
Carrying amount of building and improvements 13,005      
Accumulated depreciation 1,190      
Seniors Housing Operating | Los Angeles, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 55,314      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 114,438      
Cost Capitalized Subsequent to Acquisition 9,535      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 123,973      
Accumulated depreciation 38,324      
Seniors Housing Operating | Los Angeles, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,540      
Initial cost of building and improvements 19,007      
Cost Capitalized Subsequent to Acquisition 4,337      
Carrying amount of land and land improvements 3,540      
Carrying amount of building and improvements 23,344      
Accumulated depreciation 7,657      
Seniors Housing Operating | Los Angeles, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 28,050      
Cost Capitalized Subsequent to Acquisition 6,125      
Carrying amount of land and land improvements 71      
Carrying amount of building and improvements 34,104      
Accumulated depreciation 6,837      
Seniors Housing Operating | Louisville, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,588      
Initial cost of building and improvements 8,552      
Cost Capitalized Subsequent to Acquisition 702      
Carrying amount of land and land improvements 1,588      
Carrying amount of building and improvements 9,254      
Accumulated depreciation 271      
Seniors Housing Operating | Louisville, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,274      
Initial cost of building and improvements 9,766      
Cost Capitalized Subsequent to Acquisition 1,002      
Carrying amount of land and land improvements 2,274      
Carrying amount of building and improvements 10,768      
Accumulated depreciation 322      
Seniors Housing Operating | Louisville, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,420      
Initial cost of building and improvements 20,816      
Cost Capitalized Subsequent to Acquisition 3,432      
Carrying amount of land and land improvements 2,420      
Carrying amount of building and improvements 24,248      
Accumulated depreciation 7,719      
Seniors Housing Operating | Louisville, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 13,650      
Initial cost of land and land improvements 1,600      
Initial cost of building and improvements 20,326      
Cost Capitalized Subsequent to Acquisition 1,331      
Carrying amount of land and land improvements 1,600      
Carrying amount of building and improvements 21,657      
Accumulated depreciation 6,796      
Seniors Housing Operating | Louisville, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,266      
Initial cost of building and improvements 13,002      
Cost Capitalized Subsequent to Acquisition 21,470      
Carrying amount of land and land improvements 1,939      
Carrying amount of building and improvements 34,799      
Accumulated depreciation 4,254      
Seniors Housing Operating | Louisville, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,042      
Initial cost of building and improvements 8,396      
Cost Capitalized Subsequent to Acquisition 18,912      
Carrying amount of land and land improvements 1,156      
Carrying amount of building and improvements 27,194      
Accumulated depreciation 2,011      
Seniors Housing Operating | Louisville, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,432      
Initial cost of building and improvements 6,684      
Cost Capitalized Subsequent to Acquisition 53,555      
Carrying amount of land and land improvements 2,584      
Carrying amount of building and improvements 59,087      
Accumulated depreciation 10,262      
Seniors Housing Operating | Louisville, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,323      
Initial cost of building and improvements 7,547      
Cost Capitalized Subsequent to Acquisition 9,270      
Carrying amount of land and land improvements 1,391      
Carrying amount of building and improvements 16,749      
Accumulated depreciation 1,969      
Seniors Housing Operating | Louisville, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,630      
Initial cost of building and improvements 12,001      
Cost Capitalized Subsequent to Acquisition 36,522      
Carrying amount of land and land improvements 2,332      
Carrying amount of building and improvements 47,821      
Accumulated depreciation 5,970      
Seniors Housing Operating | Lynnfield, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,165      
Initial cost of building and improvements 45,200      
Cost Capitalized Subsequent to Acquisition 2,944      
Carrying amount of land and land improvements 3,774      
Carrying amount of building and improvements 47,535      
Accumulated depreciation 14,223      
Seniors Housing Operating | Madison, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,093      
Initial cost of building and improvements 7,764      
Cost Capitalized Subsequent to Acquisition 542      
Carrying amount of land and land improvements 2,093      
Carrying amount of building and improvements 8,306      
Accumulated depreciation 266      
Seniors Housing Operating | Mahwah, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,605      
Initial cost of building and improvements 27,249      
Cost Capitalized Subsequent to Acquisition 1,187      
Carrying amount of land and land improvements 1,608      
Carrying amount of building and improvements 28,433      
Accumulated depreciation 4,835      
Seniors Housing Operating | Malvern, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,651      
Initial cost of building and improvements 17,194      
Cost Capitalized Subsequent to Acquisition 2,975      
Carrying amount of land and land improvements 1,804      
Carrying amount of building and improvements 20,016      
Accumulated depreciation 7,370      
Seniors Housing Operating | Manassas, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,946      
Initial cost of building and improvements 15,196      
Cost Capitalized Subsequent to Acquisition 1,413      
Carrying amount of land and land improvements 2,946      
Carrying amount of building and improvements 16,609      
Accumulated depreciation 542      
Seniors Housing Operating | Mansfield, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 660      
Initial cost of building and improvements 5,251      
Cost Capitalized Subsequent to Acquisition 362      
Carrying amount of land and land improvements 660      
Carrying amount of building and improvements 5,613      
Accumulated depreciation 2,105      
Seniors Housing Operating | Manteca, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,300      
Initial cost of building and improvements 12,125      
Cost Capitalized Subsequent to Acquisition 5,149      
Carrying amount of land and land improvements 1,312      
Carrying amount of building and improvements 17,262      
Accumulated depreciation 7,092      
Seniors Housing Operating | Maple Ridge, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,431      
Initial cost of land and land improvements 2,875      
Initial cost of building and improvements 11,922      
Cost Capitalized Subsequent to Acquisition 3,241      
Carrying amount of land and land improvements 3,325      
Carrying amount of building and improvements 14,713      
Accumulated depreciation 2,479      
Seniors Housing Operating | Marieville, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,805      
Initial cost of land and land improvements 1,278      
Initial cost of building and improvements 12,113      
Cost Capitalized Subsequent to Acquisition 1,470      
Carrying amount of land and land improvements 1,412      
Carrying amount of building and improvements 13,449      
Accumulated depreciation 3,022      
Seniors Housing Operating | Markham, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 48,212      
Initial cost of land and land improvements 3,727      
Initial cost of building and improvements 48,939      
Cost Capitalized Subsequent to Acquisition 5,741      
Carrying amount of land and land improvements 4,003      
Carrying amount of building and improvements 54,404      
Accumulated depreciation 18,826      
Seniors Housing Operating | Marlboro, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,222      
Initial cost of building and improvements 14,888      
Cost Capitalized Subsequent to Acquisition 1,778      
Carrying amount of land and land improvements 2,268      
Carrying amount of building and improvements 16,620      
Accumulated depreciation 5,362      
Seniors Housing Operating | Marlow, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 9,068      
Initial cost of building and improvements 39,720      
Cost Capitalized Subsequent to Acquisition 3,511      
Carrying amount of land and land improvements 9,599      
Carrying amount of building and improvements 42,700      
Accumulated depreciation 6,664      
Seniors Housing Operating | Marysville, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 620      
Initial cost of building and improvements 4,780      
Cost Capitalized Subsequent to Acquisition 2,873      
Carrying amount of land and land improvements 620      
Carrying amount of building and improvements 7,653      
Accumulated depreciation 3,085      
Seniors Housing Operating | Marysville, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 408      
Initial cost of building and improvements 764      
Cost Capitalized Subsequent to Acquisition 94      
Carrying amount of land and land improvements 408      
Carrying amount of building and improvements 858      
Accumulated depreciation 136      
Seniors Housing Operating | Mattoon, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 791      
Initial cost of building and improvements 1,702      
Cost Capitalized Subsequent to Acquisition 203      
Carrying amount of land and land improvements 791      
Carrying amount of building and improvements 1,905      
Accumulated depreciation 246      
Seniors Housing Operating | Mattoon, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 505      
Initial cost of building and improvements 2,054      
Cost Capitalized Subsequent to Acquisition 204      
Carrying amount of land and land improvements 505      
Carrying amount of building and improvements 2,258      
Accumulated depreciation 237      
Seniors Housing Operating | McKinney, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,570      
Initial cost of building and improvements 7,389      
Cost Capitalized Subsequent to Acquisition 281      
Carrying amount of land and land improvements 1,570      
Carrying amount of building and improvements 7,670      
Accumulated depreciation 2,546      
Seniors Housing Operating | Medicine Hat, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,834      
Initial cost of land and land improvements 1,432      
Initial cost of building and improvements 14,141      
Cost Capitalized Subsequent to Acquisition 1,228      
Carrying amount of land and land improvements 1,559      
Carrying amount of building and improvements 15,242      
Accumulated depreciation 4,367      
Seniors Housing Operating | Medina, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,309      
Initial cost of building and improvements 10,540      
Cost Capitalized Subsequent to Acquisition 2,413      
Carrying amount of land and land improvements 1,731      
Carrying amount of building and improvements 12,531      
Accumulated depreciation 1,580      
Seniors Housing Operating | Melbourne, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,070      
Initial cost of building and improvements 48,257      
Cost Capitalized Subsequent to Acquisition 45,093      
Carrying amount of land and land improvements 7,070      
Carrying amount of building and improvements 93,350      
Accumulated depreciation 31,049      
Seniors Housing Operating | Melville, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,280      
Initial cost of building and improvements 73,283      
Cost Capitalized Subsequent to Acquisition 8,032      
Carrying amount of land and land improvements 4,332      
Carrying amount of building and improvements 81,263      
Accumulated depreciation 23,012      
Seniors Housing Operating | Memphis, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,800      
Initial cost of building and improvements 17,744      
Cost Capitalized Subsequent to Acquisition 3,383      
Carrying amount of land and land improvements 1,800      
Carrying amount of building and improvements 21,127      
Accumulated depreciation 7,718      
Seniors Housing Operating | Memphis, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,794      
Initial cost of building and improvements 3,093      
Cost Capitalized Subsequent to Acquisition 881      
Carrying amount of land and land improvements 2,794      
Carrying amount of building and improvements 3,974      
Accumulated depreciation 419      
Seniors Housing Operating | Memphis, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,578      
Initial cost of building and improvements 9,368      
Cost Capitalized Subsequent to Acquisition 565      
Carrying amount of land and land improvements 1,578      
Carrying amount of building and improvements 9,933      
Accumulated depreciation 436      
Seniors Housing Operating | Menomonee Falls, WI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,020      
Initial cost of building and improvements 6,984      
Cost Capitalized Subsequent to Acquisition 2,579      
Carrying amount of land and land improvements 1,020      
Carrying amount of building and improvements 9,563      
Accumulated depreciation 3,217      
Seniors Housing Operating | Merced, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,806      
Initial cost of building and improvements 12,444      
Cost Capitalized Subsequent to Acquisition 848      
Carrying amount of land and land improvements 2,806      
Carrying amount of building and improvements 13,292      
Accumulated depreciation 347      
Seniors Housing Operating | Mesa, AZ        
SEC Schedule, 12-28, 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 9,087      
Cost Capitalized Subsequent to Acquisition 4,647      
Carrying amount of land and land improvements 950      
Carrying amount of building and improvements 13,734      
Accumulated depreciation 6,613      
Seniors Housing Operating | Metairie, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,200      
Initial cost of land and land improvements 725      
Initial cost of building and improvements 27,708      
Cost Capitalized Subsequent to Acquisition 1,873      
Carrying amount of land and land improvements 759      
Carrying amount of building and improvements 29,547      
Accumulated depreciation 7,955      
Seniors Housing Operating | Mill Creek, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 10,150      
Initial cost of building and improvements 60,274      
Cost Capitalized Subsequent to Acquisition 4,529      
Carrying amount of land and land improvements 10,179      
Carrying amount of building and improvements 64,774      
Accumulated depreciation 23,660      
Seniors Housing Operating | Millbrook, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 12,708      
Initial cost of building and improvements 7,671      
Cost Capitalized Subsequent to Acquisition 4,777      
Carrying amount of land and land improvements 12,708      
Carrying amount of building and improvements 12,448      
Accumulated depreciation 251      
Seniors Housing Operating | Milton, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 18,806      
Initial cost of land and land improvements 4,542      
Initial cost of building and improvements 25,321      
Cost Capitalized Subsequent to Acquisition 7,974      
Carrying amount of land and land improvements 4,957      
Carrying amount of building and improvements 32,880      
Accumulated depreciation 5,599      
Seniors Housing Operating | Milwaukie, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,391      
Initial cost of building and improvements 17,777      
Cost Capitalized Subsequent to Acquisition 2,485      
Carrying amount of land and land improvements 2,391      
Carrying amount of building and improvements 20,262      
Accumulated depreciation 654      
Seniors Housing Operating | Minnetonka, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 920      
Initial cost of building and improvements 29,344      
Cost Capitalized Subsequent to Acquisition 1,533      
Carrying amount of land and land improvements 964      
Carrying amount of building and improvements 30,833      
Accumulated depreciation 8,530      
Seniors Housing Operating | Mission Viejo, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 12,977      
Initial cost of land and land improvements 6,600      
Initial cost of building and improvements 52,118      
Cost Capitalized Subsequent to Acquisition 8,717      
Carrying amount of land and land improvements 6,600      
Carrying amount of building and improvements 60,835      
Accumulated depreciation 12,471      
Seniors Housing Operating | Mississauga, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,971      
Initial cost of land and land improvements 1,602      
Initial cost of building and improvements 17,996      
Cost Capitalized Subsequent to Acquisition 2,278      
Carrying amount of land and land improvements 1,739      
Carrying amount of building and improvements 20,137      
Accumulated depreciation 5,918      
Seniors Housing Operating | Mississauga, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 25,740      
Initial cost of land and land improvements 3,649      
Initial cost of building and improvements 35,137      
Cost Capitalized Subsequent to Acquisition 5,020      
Carrying amount of land and land improvements 3,997      
Carrying amount of building and improvements 39,809      
Accumulated depreciation 11,575      
Seniors Housing Operating | Mississauga, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,814      
Initial cost of land and land improvements 2,548      
Initial cost of building and improvements 15,158      
Cost Capitalized Subsequent to Acquisition 4,452      
Carrying amount of land and land improvements 2,762      
Carrying amount of building and improvements 19,396      
Accumulated depreciation 4,893      
Seniors Housing Operating | Missoula, MT        
SEC Schedule, 12-28, 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 7,490      
Cost Capitalized Subsequent to Acquisition 1,267      
Carrying amount of land and land improvements 553      
Carrying amount of building and improvements 8,754      
Accumulated depreciation 3,529      
Seniors Housing Operating | Mobberley, UKD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,146      
Initial cost of building and improvements 26,665      
Cost Capitalized Subsequent to Acquisition 4,043      
Carrying amount of land and land improvements 5,660      
Carrying amount of building and improvements 30,194      
Accumulated depreciation 10,516      
Seniors Housing Operating | Mobile, AL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 737      
Initial cost of building and improvements 9,072      
Cost Capitalized Subsequent to Acquisition 1,133      
Carrying amount of land and land improvements 737      
Carrying amount of building and improvements 10,205      
Accumulated depreciation 400      
Seniors Housing Operating | Modesto, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 293      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 293      
Accumulated depreciation 8      
Seniors Housing Operating | Molalla, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,210      
Initial cost of building and improvements 3,903      
Cost Capitalized Subsequent to Acquisition 436      
Carrying amount of land and land improvements 1,210      
Carrying amount of building and improvements 4,339      
Accumulated depreciation 674      
Seniors Housing Operating | Monterey, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,440      
Initial cost of building and improvements 29,101      
Cost Capitalized Subsequent to Acquisition 3,319      
Carrying amount of land and land improvements 6,443      
Carrying amount of building and improvements 32,417      
Accumulated depreciation 9,580      
Seniors Housing Operating | Montgomery, AL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 524      
Initial cost of building and improvements 9,760      
Cost Capitalized Subsequent to Acquisition 1,163      
Carrying amount of land and land improvements 524      
Carrying amount of building and improvements 10,923      
Accumulated depreciation 422      
Seniors Housing Operating | Montgomery, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,482      
Initial cost of building and improvements 83,642      
Cost Capitalized Subsequent to Acquisition 14,743      
Carrying amount of land and land improvements 6,709      
Carrying amount of building and improvements 98,158      
Accumulated depreciation 19,891      
Seniors Housing Operating | Montgomery Village, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,530      
Initial cost of building and improvements 18,246      
Cost Capitalized Subsequent to Acquisition 7,432      
Carrying amount of land and land improvements 4,291      
Carrying amount of building and improvements 24,917      
Accumulated depreciation 12,188      
Seniors Housing Operating | Montreal-Nord, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 10,733      
Initial cost of land and land improvements 4,407      
Initial cost of building and improvements 23,719      
Cost Capitalized Subsequent to Acquisition 10,585      
Carrying amount of land and land improvements 4,704      
Carrying amount of building and improvements 34,007      
Accumulated depreciation 6,448      
Seniors Housing Operating | Moorestown, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,060      
Initial cost of building and improvements 51,628      
Cost Capitalized Subsequent to Acquisition 7,644      
Carrying amount of land and land improvements 2,095      
Carrying amount of building and improvements 59,237      
Accumulated depreciation 15,647      
Seniors Housing Operating | Moose Jaw, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 1,556      
Initial cost of land and land improvements 582      
Initial cost of building and improvements 12,973      
Cost Capitalized Subsequent to Acquisition 2,229      
Carrying amount of land and land improvements 630      
Carrying amount of building and improvements 15,154      
Accumulated depreciation 4,257      
Seniors Housing Operating | Morton Grove, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,900      
Initial cost of building and improvements 15,724      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,900      
Carrying amount of building and improvements 15,724      
Accumulated depreciation 5,374      
Seniors Housing Operating | Murphy, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,950      
Initial cost of building and improvements 19,182      
Cost Capitalized Subsequent to Acquisition 818      
Carrying amount of land and land improvements 1,950      
Carrying amount of building and improvements 20,000      
Accumulated depreciation 3,490      
Seniors Housing Operating | Myrtle Beach, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 69      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 69      
Accumulated depreciation 3      
Seniors Housing Operating | Nacogdoches, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 390      
Initial cost of building and improvements 5,754      
Cost Capitalized Subsequent to Acquisition 291      
Carrying amount of land and land improvements 390      
Carrying amount of building and improvements 6,045      
Accumulated depreciation 2,279      
Seniors Housing Operating | Naperville, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,550      
Initial cost of building and improvements 12,237      
Cost Capitalized Subsequent to Acquisition 2,388      
Carrying amount of land and land improvements 1,550      
Carrying amount of building and improvements 14,625      
Accumulated depreciation 4,625      
Seniors Housing Operating | Naperville, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,540      
Initial cost of building and improvements 28,204      
Cost Capitalized Subsequent to Acquisition 1,975      
Carrying amount of land and land improvements 1,593      
Carrying amount of building and improvements 30,126      
Accumulated depreciation 9,007      
Seniors Housing Operating | Nashville, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,900      
Initial cost of building and improvements 35,788      
Cost Capitalized Subsequent to Acquisition 4,850      
Carrying amount of land and land improvements 3,900      
Carrying amount of building and improvements 40,638      
Accumulated depreciation 14,081      
Seniors Housing Operating | New Braunfels, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,200      
Initial cost of building and improvements 19,800      
Cost Capitalized Subsequent to Acquisition 10,508      
Carrying amount of land and land improvements 2,729      
Carrying amount of building and improvements 28,779      
Accumulated depreciation 7,250      
Seniors Housing Operating | New Palestine, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,259      
Initial cost of building and improvements 20,626      
Cost Capitalized Subsequent to Acquisition 1,384      
Carrying amount of land and land improvements 2,259      
Carrying amount of building and improvements 22,010      
Accumulated depreciation 124      
Seniors Housing Operating | Newberg, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,806      
Initial cost of building and improvements 14,781      
Cost Capitalized Subsequent to Acquisition 479      
Carrying amount of land and land improvements 2,806      
Carrying amount of building and improvements 15,260      
Accumulated depreciation 404      
Seniors Housing Operating | Newbury, UKJ        
SEC Schedule, 12-28, 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 12,796      
Cost Capitalized Subsequent to Acquisition 1,963      
Carrying amount of land and land improvements 3,119      
Carrying amount of building and improvements 14,490      
Accumulated depreciation 2,135      
Seniors Housing Operating | Newmarket, UKH        
SEC Schedule, 12-28, 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 11,902      
Cost Capitalized Subsequent to Acquisition 2,966      
Carrying amount of land and land improvements 4,476      
Carrying amount of building and improvements 14,463      
Accumulated depreciation 3,871      
Seniors Housing Operating | Newtown Square, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,930      
Initial cost of building and improvements 14,420      
Cost Capitalized Subsequent to Acquisition 1,933      
Carrying amount of land and land improvements 1,962      
Carrying amount of building and improvements 16,321      
Accumulated depreciation 5,984      
Seniors Housing Operating | North Tonawanda, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,249      
Initial cost of building and improvements 7,360      
Cost Capitalized Subsequent to Acquisition 600      
Carrying amount of land and land improvements 1,249      
Carrying amount of building and improvements 7,960      
Accumulated depreciation 1,286      
Seniors Housing Operating | North Tustin, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,880      
Initial cost of building and improvements 18,059      
Cost Capitalized Subsequent to Acquisition 1,195      
Carrying amount of land and land improvements 3,044      
Carrying amount of building and improvements 19,090      
Accumulated depreciation 5,188      
Seniors Housing Operating | North Wales, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,968      
Initial cost of building and improvements 17,439      
Cost Capitalized Subsequent to Acquisition 917      
Carrying amount of land and land improvements 1,968      
Carrying amount of building and improvements 18,356      
Accumulated depreciation 1,004      
Seniors Housing Operating | Oak Harbor, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 739      
Initial cost of building and improvements 7,698      
Cost Capitalized Subsequent to Acquisition 448      
Carrying amount of land and land improvements 739      
Carrying amount of building and improvements 8,146      
Accumulated depreciation 1,242      
Seniors Housing Operating | Oak Park, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,250      
Initial cost of building and improvements 40,383      
Cost Capitalized Subsequent to Acquisition 3,812      
Carrying amount of land and land improvements 1,250      
Carrying amount of building and improvements 44,195      
Accumulated depreciation 13,444      
Seniors Housing Operating | Oakdale, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,917      
Initial cost of building and improvements 11,954      
Cost Capitalized Subsequent to Acquisition 880      
Carrying amount of land and land improvements 1,917      
Carrying amount of building and improvements 12,834      
Accumulated depreciation 2,017      
Seniors Housing Operating | Oakland, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,877      
Initial cost of building and improvements 47,508      
Cost Capitalized Subsequent to Acquisition 3,897      
Carrying amount of land and land improvements 4,117      
Carrying amount of building and improvements 51,165      
Accumulated depreciation 15,459      
Seniors Housing Operating | Oakton, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,250      
Initial cost of building and improvements 37,576      
Cost Capitalized Subsequent to Acquisition 3,951      
Carrying amount of land and land improvements 2,393      
Carrying amount of building and improvements 41,384      
Accumulated depreciation 11,982      
Seniors Housing Operating | Oakville, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,339      
Initial cost of land and land improvements 1,252      
Initial cost of building and improvements 7,382      
Cost Capitalized Subsequent to Acquisition 1,239      
Carrying amount of land and land improvements 1,412      
Carrying amount of building and improvements 8,461      
Accumulated depreciation 2,640      
Seniors Housing Operating | Oakville, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,365      
Initial cost of land and land improvements 2,134      
Initial cost of building and improvements 29,963      
Cost Capitalized Subsequent to Acquisition 4,805      
Carrying amount of land and land improvements 2,320      
Carrying amount of building and improvements 34,582      
Accumulated depreciation 10,270      
Seniors Housing Operating | Oakville, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,388      
Initial cost of land and land improvements 1,271      
Initial cost of building and improvements 13,754      
Cost Capitalized Subsequent to Acquisition 2,433      
Carrying amount of land and land improvements 1,388      
Carrying amount of building and improvements 16,070      
Accumulated depreciation 4,306      
Seniors Housing Operating | Odessa, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 346      
Initial cost of building and improvements 3,406      
Cost Capitalized Subsequent to Acquisition 100      
Carrying amount of land and land improvements 346      
Carrying amount of building and improvements 3,506      
Accumulated depreciation 126      
Seniors Housing Operating | Ogden, UT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 360      
Initial cost of building and improvements 6,700      
Cost Capitalized Subsequent to Acquisition 1,376      
Carrying amount of land and land improvements 360      
Carrying amount of building and improvements 8,076      
Accumulated depreciation 3,392      
Seniors Housing Operating | Oklahoma City, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,962      
Initial cost of building and improvements 22,911      
Cost Capitalized Subsequent to Acquisition 6,708      
Carrying amount of land and land improvements 5,962      
Carrying amount of building and improvements 29,619      
Accumulated depreciation 379      
Seniors Housing Operating | Okotoks, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 19,097      
Initial cost of land and land improvements 714      
Initial cost of building and improvements 20,943      
Cost Capitalized Subsequent to Acquisition 2,522      
Carrying amount of land and land improvements 791      
Carrying amount of building and improvements 23,388      
Accumulated depreciation 5,575      
Seniors Housing Operating | Olney, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 897      
Initial cost of building and improvements 4,543      
Cost Capitalized Subsequent to Acquisition 262      
Carrying amount of land and land improvements 897      
Carrying amount of building and improvements 4,805      
Accumulated depreciation 400      
Seniors Housing Operating | Olney, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 534      
Initial cost of building and improvements 2,053      
Cost Capitalized Subsequent to Acquisition 181      
Carrying amount of land and land improvements 534      
Carrying amount of building and improvements 2,234      
Accumulated depreciation 266      
Seniors Housing Operating | Omaha, NE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 370      
Initial cost of building and improvements 10,230      
Cost Capitalized Subsequent to Acquisition 139      
Carrying amount of land and land improvements 379      
Carrying amount of building and improvements 10,360      
Accumulated depreciation 3,198      
Seniors Housing Operating | Omaha, NE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 380      
Initial cost of building and improvements 8,769      
Cost Capitalized Subsequent to Acquisition 236      
Carrying amount of land and land improvements 384      
Carrying amount of building and improvements 9,001      
Accumulated depreciation 2,902      
Seniors Housing Operating | Orange, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 35,157      
Initial cost of land and land improvements 8,021      
Initial cost of building and improvements 64,689      
Cost Capitalized Subsequent to Acquisition 3,238      
Carrying amount of land and land improvements 8,021      
Carrying amount of building and improvements 67,927      
Accumulated depreciation 6,994      
Seniors Housing Operating | Orem, UT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,395      
Initial cost of building and improvements 7,983      
Cost Capitalized Subsequent to Acquisition 792      
Carrying amount of land and land improvements 1,395      
Carrying amount of building and improvements 8,775      
Accumulated depreciation 326      
Seniors Housing Operating | Ormond Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,428      
Initial cost of building and improvements 15,702      
Cost Capitalized Subsequent to Acquisition 1,239      
Carrying amount of land and land improvements 3,428      
Carrying amount of building and improvements 16,941      
Accumulated depreciation 354      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 13,109      
Initial cost of land and land improvements 1,341      
Initial cost of building and improvements 15,425      
Cost Capitalized Subsequent to Acquisition 4,399      
Carrying amount of land and land improvements 1,484      
Carrying amount of building and improvements 19,681      
Accumulated depreciation 3,562      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 17,163      
Initial cost of land and land improvements 3,454      
Initial cost of building and improvements 23,309      
Cost Capitalized Subsequent to Acquisition 4,423      
Carrying amount of land and land improvements 3,799      
Carrying amount of building and improvements 27,387      
Accumulated depreciation 10,015      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 19,571      
Initial cost of land and land improvements 4,256      
Initial cost of building and improvements 39,141      
Cost Capitalized Subsequent to Acquisition 3,518      
Carrying amount of land and land improvements 4,552      
Carrying amount of building and improvements 42,363      
Accumulated depreciation 8,147      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 6,812      
Initial cost of land and land improvements 2,327      
Initial cost of building and improvements 7,817      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,327      
Carrying amount of building and improvements 7,817      
Accumulated depreciation 4,123      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 12,969      
Initial cost of land and land improvements 2,963      
Initial cost of building and improvements 26,424      
Cost Capitalized Subsequent to Acquisition 4,585      
Carrying amount of land and land improvements 3,257      
Carrying amount of building and improvements 30,715      
Accumulated depreciation 5,891      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,789      
Initial cost of land and land improvements 1,561      
Initial cost of building and improvements 18,170      
Cost Capitalized Subsequent to Acquisition 3,959      
Carrying amount of land and land improvements 1,766      
Carrying amount of building and improvements 21,924      
Accumulated depreciation 4,142      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 12,754      
Initial cost of land and land improvements 3,403      
Initial cost of building and improvements 31,090      
Cost Capitalized Subsequent to Acquisition 5,033      
Carrying amount of land and land improvements 3,723      
Carrying amount of building and improvements 35,803      
Accumulated depreciation 6,510      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 16,129      
Initial cost of land and land improvements 3,411      
Initial cost of building and improvements 28,335      
Cost Capitalized Subsequent to Acquisition 7,446      
Carrying amount of land and land improvements 3,760      
Carrying amount of building and improvements 35,432      
Accumulated depreciation 7,849      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,637      
Initial cost of land and land improvements 2,809      
Initial cost of building and improvements 27,299      
Cost Capitalized Subsequent to Acquisition 4,570      
Carrying amount of land and land improvements 3,024      
Carrying amount of building and improvements 31,654      
Accumulated depreciation 10,593      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,248      
Initial cost of land and land improvements 1,156      
Initial cost of building and improvements 9,758      
Cost Capitalized Subsequent to Acquisition 1,383      
Carrying amount of land and land improvements 1,281      
Carrying amount of building and improvements 11,016      
Accumulated depreciation 3,220      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,534      
Initial cost of land and land improvements 746      
Initial cost of building and improvements 7,800      
Cost Capitalized Subsequent to Acquisition 1,629      
Carrying amount of land and land improvements 847      
Carrying amount of building and improvements 9,328      
Accumulated depreciation 2,645      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,413      
Initial cost of land and land improvements 1,176      
Initial cost of building and improvements 12,764      
Cost Capitalized Subsequent to Acquisition 1,827      
Carrying amount of land and land improvements 1,313      
Carrying amount of building and improvements 14,454      
Accumulated depreciation 2,827      
Seniors Housing Operating | Outremont, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 16,862      
Initial cost of land and land improvements 6,746      
Initial cost of building and improvements 45,981      
Cost Capitalized Subsequent to Acquisition 13,725      
Carrying amount of land and land improvements 7,200      
Carrying amount of building and improvements 59,252      
Accumulated depreciation 12,055      
Seniors Housing Operating | Overland Park, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,540      
Initial cost of building and improvements 16,269      
Cost Capitalized Subsequent to Acquisition 2,834      
Carrying amount of land and land improvements 1,670      
Carrying amount of building and improvements 18,973      
Accumulated depreciation 5,275      
Seniors Housing Operating | Oviedo, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,350      
Initial cost of building and improvements 28,252      
Cost Capitalized Subsequent to Acquisition 2,895      
Carrying amount of land and land improvements 3,350      
Carrying amount of building and improvements 31,147      
Accumulated depreciation 1,042      
Seniors Housing Operating | Painsville, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 3,314      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | Palestine, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 180      
Initial cost of building and improvements 4,320      
Cost Capitalized Subsequent to Acquisition 1,723      
Carrying amount of land and land improvements 180      
Carrying amount of building and improvements 6,043      
Accumulated depreciation 2,239      
Seniors Housing Operating | Palm Desert, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 13,674      
Initial cost of building and improvements 52,153      
Cost Capitalized Subsequent to Acquisition 6,490      
Carrying amount of land and land improvements 13,674      
Carrying amount of building and improvements 58,643      
Accumulated depreciation 495      
Seniors Housing Operating | Palo Alto, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 25,050      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 39,639      
Cost Capitalized Subsequent to Acquisition 3,719      
Carrying amount of land and land improvements 24      
Carrying amount of building and improvements 43,334      
Accumulated depreciation 12,722      
Seniors Housing Operating | Paramus, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,840      
Initial cost of building and improvements 35,728      
Cost Capitalized Subsequent to Acquisition 2,061      
Carrying amount of land and land improvements 2,986      
Carrying amount of building and improvements 37,643      
Accumulated depreciation 10,951      
Seniors Housing Operating | Paris, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 688      
Initial cost of building and improvements 5,948      
Cost Capitalized Subsequent to Acquisition 255      
Carrying amount of land and land improvements 688      
Carrying amount of building and improvements 6,203      
Accumulated depreciation 386      
Seniors Housing Operating | Paris, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 490      
Initial cost of building and improvements 5,452      
Cost Capitalized Subsequent to Acquisition 360      
Carrying amount of land and land improvements 490      
Carrying amount of building and improvements 5,812      
Accumulated depreciation 5,468      
Seniors Housing Operating | Parma, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,533      
Initial cost of building and improvements 9,221      
Cost Capitalized Subsequent to Acquisition 701      
Carrying amount of land and land improvements 1,533      
Carrying amount of building and improvements 9,922      
Accumulated depreciation 1,575      
Seniors Housing Operating | Paso Robles, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,770      
Initial cost of building and improvements 8,630      
Cost Capitalized Subsequent to Acquisition 4,096      
Carrying amount of land and land improvements 1,770      
Carrying amount of building and improvements 12,726      
Accumulated depreciation 5,206      
Seniors Housing Operating | Peabody, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,634      
Initial cost of land and land improvements 2,250      
Initial cost of building and improvements 16,071      
Cost Capitalized Subsequent to Acquisition 1,408      
Carrying amount of land and land improvements 2,380      
Carrying amount of building and improvements 17,349      
Accumulated depreciation 4,386      
Seniors Housing Operating | Pella, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 870      
Initial cost of building and improvements 6,716      
Cost Capitalized Subsequent to Acquisition 417      
Carrying amount of land and land improvements 938      
Carrying amount of building and improvements 7,065      
Accumulated depreciation 1,695      
Seniors Housing Operating | Pembroke, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,931      
Initial cost of building and improvements 9,427      
Cost Capitalized Subsequent to Acquisition 1,445      
Carrying amount of land and land improvements 2,029      
Carrying amount of building and improvements 10,774      
Accumulated depreciation 3,274      
Seniors Housing Operating | Pennington, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,380      
Initial cost of building and improvements 27,620      
Cost Capitalized Subsequent to Acquisition 2,061      
Carrying amount of land and land improvements 1,507      
Carrying amount of building and improvements 29,554      
Accumulated depreciation 8,087      
Seniors Housing Operating | Peoria, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 766      
Initial cost of building and improvements 21,796      
Cost Capitalized Subsequent to Acquisition 1,572      
Carrying amount of land and land improvements 766      
Carrying amount of building and improvements 23,368      
Accumulated depreciation 4,013      
Seniors Housing Operating | Peoria, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,006      
Initial cost of building and improvements 10,959      
Cost Capitalized Subsequent to Acquisition 1,132      
Carrying amount of land and land improvements 2,006      
Carrying amount of building and improvements 12,091      
Accumulated depreciation 452      
Seniors Housing Operating | Pinole, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 62      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 62      
Accumulated depreciation 1      
Seniors Housing Operating | Pittsburgh, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,580      
Initial cost of building and improvements 18,017      
Cost Capitalized Subsequent to Acquisition 11,193      
Carrying amount of land and land improvements 1,610      
Carrying amount of building and improvements 29,180      
Accumulated depreciation 6,638      
Seniors Housing Operating | Placentia, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 8,480      
Initial cost of building and improvements 17,076      
Cost Capitalized Subsequent to Acquisition 6,245      
Carrying amount of land and land improvements 8,519      
Carrying amount of building and improvements 23,282      
Accumulated depreciation 6,365      
Seniors Housing Operating | Plainview, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,066      
Initial cost of building and improvements 19,901      
Cost Capitalized Subsequent to Acquisition 1,595      
Carrying amount of land and land improvements 3,182      
Carrying amount of building and improvements 21,380      
Accumulated depreciation 5,988      
Seniors Housing Operating | Plano, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 28,960      
Initial cost of land and land improvements 3,120      
Initial cost of building and improvements 59,950      
Cost Capitalized Subsequent to Acquisition 4,846      
Carrying amount of land and land improvements 3,231      
Carrying amount of building and improvements 64,685      
Accumulated depreciation 21,960      
Seniors Housing Operating | Plano, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,750      
Initial cost of building and improvements 15,390      
Cost Capitalized Subsequent to Acquisition 1,649      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 17,039      
Accumulated depreciation 2,942      
Seniors Housing Operating | Plattsmouth, NE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 250      
Initial cost of building and improvements 5,650      
Cost Capitalized Subsequent to Acquisition 91      
Carrying amount of land and land improvements 250      
Carrying amount of building and improvements 5,741      
Accumulated depreciation 1,860      
Seniors Housing Operating | Playa Vista, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,580      
Initial cost of building and improvements 40,531      
Cost Capitalized Subsequent to Acquisition 3,871      
Carrying amount of land and land improvements 1,708      
Carrying amount of building and improvements 44,274      
Accumulated depreciation 12,709      
Seniors Housing Operating | Pleasanton, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 52,086      
Carrying amount of land and land improvements 3,676      
Carrying amount of building and improvements 48,410      
Accumulated depreciation 4,093      
Seniors Housing Operating | Port Perry, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,261      
Initial cost of land and land improvements 3,685      
Initial cost of building and improvements 26,788      
Cost Capitalized Subsequent to Acquisition 4,753      
Carrying amount of land and land improvements 4,008      
Carrying amount of building and improvements 31,218      
Accumulated depreciation 5,743      
Seniors Housing Operating | Port St. Lucie, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 8,700      
Initial cost of building and improvements 47,230      
Cost Capitalized Subsequent to Acquisition 21,390      
Carrying amount of land and land improvements 8,700      
Carrying amount of building and improvements 68,620      
Accumulated depreciation 22,796      
Seniors Housing Operating | Portage, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 41,415      
Initial cost of land and land improvements 2,880      
Initial cost of building and improvements 59,764      
Cost Capitalized Subsequent to Acquisition 2,569      
Carrying amount of land and land improvements 2,880      
Carrying amount of building and improvements 62,333      
Accumulated depreciation 7,718      
Seniors Housing Operating | Porterville, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,739      
Initial cost of building and improvements 14,248      
Cost Capitalized Subsequent to Acquisition 942      
Carrying amount of land and land improvements 1,739      
Carrying amount of building and improvements 15,190      
Accumulated depreciation 543      
Seniors Housing Operating | Potomac, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,500      
Initial cost of building and improvements 53,379      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 6,500      
Carrying amount of building and improvements 53,379      
Accumulated depreciation 1,174      
Seniors Housing Operating | Princeton, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,730      
Initial cost of building and improvements 30,888      
Cost Capitalized Subsequent to Acquisition 2,424      
Carrying amount of land and land improvements 1,814      
Carrying amount of building and improvements 33,228      
Accumulated depreciation 9,526      
Seniors Housing Operating | Purley, UKI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,365      
Initial cost of building and improvements 35,161      
Cost Capitalized Subsequent to Acquisition 5,554      
Carrying amount of land and land improvements 8,121      
Carrying amount of building and improvements 39,959      
Accumulated depreciation 12,742      
Seniors Housing Operating | Puyallup, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,150      
Initial cost of building and improvements 20,776      
Cost Capitalized Subsequent to Acquisition 4,277      
Carrying amount of land and land improvements 1,156      
Carrying amount of building and improvements 25,047      
Accumulated depreciation 7,826      
Seniors Housing Operating | Quebec City, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,084      
Initial cost of land and land improvements 2,420      
Initial cost of building and improvements 21,977      
Cost Capitalized Subsequent to Acquisition 4,902      
Carrying amount of land and land improvements 2,583      
Carrying amount of building and improvements 26,716      
Accumulated depreciation 4,468      
Seniors Housing Operating | Quebec City, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,614      
Initial cost of land and land improvements 3,300      
Initial cost of building and improvements 28,325      
Cost Capitalized Subsequent to Acquisition 6,797      
Carrying amount of land and land improvements 3,522      
Carrying amount of building and improvements 34,900      
Accumulated depreciation 5,771      
Seniors Housing Operating | Queensbury, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,260      
Initial cost of building and improvements 21,744      
Cost Capitalized Subsequent to Acquisition 1,842      
Carrying amount of land and land improvements 1,273      
Carrying amount of building and improvements 23,573      
Accumulated depreciation 4,658      
Seniors Housing Operating | Quincy, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,328      
Initial cost of building and improvements 15,242      
Cost Capitalized Subsequent to Acquisition 1,012      
Carrying amount of land and land improvements 2,328      
Carrying amount of building and improvements 16,254      
Accumulated depreciation 479      
Seniors Housing Operating | Rancho Cucamonga, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,480      
Initial cost of building and improvements 10,055      
Cost Capitalized Subsequent to Acquisition 2,413      
Carrying amount of land and land improvements 2,084      
Carrying amount of building and improvements 11,864      
Accumulated depreciation 4,330      
Seniors Housing Operating | Rancho Palos Verdes, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,450      
Initial cost of building and improvements 60,034      
Cost Capitalized Subsequent to Acquisition 7,220      
Carrying amount of land and land improvements 5,450      
Carrying amount of building and improvements 67,254      
Accumulated depreciation 19,773      
Seniors Housing Operating | Randolph, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 29,300      
Initial cost of land and land improvements 1,540      
Initial cost of building and improvements 46,934      
Cost Capitalized Subsequent to Acquisition 2,635      
Carrying amount of land and land improvements 1,718      
Carrying amount of building and improvements 49,391      
Accumulated depreciation 13,945      
Seniors Housing Operating | Rantoul, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 579      
Initial cost of building and improvements 4,310      
Cost Capitalized Subsequent to Acquisition 266      
Carrying amount of land and land improvements 579      
Carrying amount of building and improvements 4,576      
Accumulated depreciation 331      
Seniors Housing Operating | Red Deer, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,913      
Initial cost of land and land improvements 1,247      
Initial cost of building and improvements 19,283      
Cost Capitalized Subsequent to Acquisition 3,188      
Carrying amount of land and land improvements 1,366      
Carrying amount of building and improvements 22,352      
Accumulated depreciation 4,861      
Seniors Housing Operating | Red Deer, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,013      
Initial cost of land and land improvements 1,199      
Initial cost of building and improvements 22,339      
Cost Capitalized Subsequent to Acquisition 3,981      
Carrying amount of land and land improvements 1,278      
Carrying amount of building and improvements 26,241      
Accumulated depreciation 5,875      
Seniors Housing Operating | Redding, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 25,984      
Initial cost of land and land improvements 4,474      
Initial cost of building and improvements 36,557      
Cost Capitalized Subsequent to Acquisition 2,161      
Carrying amount of land and land improvements 4,474      
Carrying amount of building and improvements 38,718      
Accumulated depreciation 4,583      
Seniors Housing Operating | Redding, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,639      
Initial cost of building and improvements 9,188      
Cost Capitalized Subsequent to Acquisition 1,102      
Carrying amount of land and land improvements 2,639      
Carrying amount of building and improvements 10,290      
Accumulated depreciation 394      
Seniors Housing Operating | Redding, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,966      
Initial cost of building and improvements 38,192      
Cost Capitalized Subsequent to Acquisition 2,233      
Carrying amount of land and land improvements 1,966      
Carrying amount of building and improvements 40,425      
Accumulated depreciation 849      
Seniors Housing Operating | Regina, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,611      
Initial cost of land and land improvements 1,485      
Initial cost of building and improvements 21,148      
Cost Capitalized Subsequent to Acquisition 2,851      
Carrying amount of land and land improvements 1,728      
Carrying amount of building and improvements 23,756      
Accumulated depreciation 7,399      
Seniors Housing Operating | Regina, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,608      
Initial cost of land and land improvements 1,244      
Initial cost of building and improvements 21,036      
Cost Capitalized Subsequent to Acquisition 2,652      
Carrying amount of land and land improvements 1,362      
Carrying amount of building and improvements 23,570      
Accumulated depreciation 6,713      
Seniors Housing Operating | Regina, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,657      
Initial cost of land and land improvements 1,539      
Initial cost of building and improvements 24,053      
Cost Capitalized Subsequent to Acquisition 5,468      
Carrying amount of land and land improvements 1,697      
Carrying amount of building and improvements 29,363      
Accumulated depreciation 5,893      
Seniors Housing Operating | Rehoboth Beach, DE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 960      
Initial cost of building and improvements 24,248      
Cost Capitalized Subsequent to Acquisition 9,441      
Carrying amount of land and land improvements 993      
Carrying amount of building and improvements 33,656      
Accumulated depreciation 8,874      
Seniors Housing Operating | Reno, NV        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,060      
Initial cost of building and improvements 11,440      
Cost Capitalized Subsequent to Acquisition 2,796      
Carrying amount of land and land improvements 1,060      
Carrying amount of building and improvements 14,236      
Accumulated depreciation 5,589      
Seniors Housing Operating | Richmond, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,501      
Initial cost of building and improvements 21,623      
Cost Capitalized Subsequent to Acquisition 2,074      
Carrying amount of land and land improvements 6,501      
Carrying amount of building and improvements 23,697      
Accumulated depreciation 801      
Seniors Housing Operating | Ridgeland, MS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 520      
Initial cost of building and improvements 7,675      
Cost Capitalized Subsequent to Acquisition 2,496      
Carrying amount of land and land improvements 520      
Carrying amount of building and improvements 10,171      
Accumulated depreciation 4,139      
Seniors Housing Operating | Riviere-du-Loup, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 2,540      
Initial cost of land and land improvements 592      
Initial cost of building and improvements 7,601      
Cost Capitalized Subsequent to Acquisition 1,780      
Carrying amount of land and land improvements 693      
Carrying amount of building and improvements 9,280      
Accumulated depreciation 2,146      
Seniors Housing Operating | Riviere-du-Loup, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,618      
Initial cost of land and land improvements 1,454      
Initial cost of building and improvements 16,848      
Cost Capitalized Subsequent to Acquisition 6,096      
Carrying amount of land and land improvements 1,857      
Carrying amount of building and improvements 22,541      
Accumulated depreciation 5,829      
Seniors Housing Operating | Robinson, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 660      
Initial cost of building and improvements 3,385      
Cost Capitalized Subsequent to Acquisition 282      
Carrying amount of land and land improvements 660      
Carrying amount of building and improvements 3,667      
Accumulated depreciation 342      
Seniors Housing Operating | Rockford, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,006      
Initial cost of building and improvements 4,728      
Cost Capitalized Subsequent to Acquisition 391      
Carrying amount of land and land improvements 1,006      
Carrying amount of building and improvements 5,119      
Accumulated depreciation 382      
Seniors Housing Operating | Rocky Hill, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,090      
Initial cost of building and improvements 6,710      
Cost Capitalized Subsequent to Acquisition 5,638      
Carrying amount of land and land improvements 42      
Carrying amount of building and improvements 13,396      
Accumulated depreciation 4,093      
Seniors Housing Operating | Rogers, AR        
SEC Schedule, 12-28, 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 39      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 39      
Accumulated depreciation 2      
Seniors Housing Operating | Rohnert Park, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,500      
Initial cost of building and improvements 18,700      
Cost Capitalized Subsequent to Acquisition 5,057      
Carrying amount of land and land improvements 6,546      
Carrying amount of building and improvements 23,711      
Accumulated depreciation 9,769      
Seniors Housing Operating | Romeoville, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 854      
Initial cost of building and improvements 12,646      
Cost Capitalized Subsequent to Acquisition 62,306      
Carrying amount of land and land improvements 6,197      
Carrying amount of building and improvements 69,609      
Accumulated depreciation 22,775      
Seniors Housing Operating | Roseburg, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 979      
Initial cost of building and improvements 12,388      
Cost Capitalized Subsequent to Acquisition 2,065      
Carrying amount of land and land improvements 979      
Carrying amount of building and improvements 14,453      
Accumulated depreciation 499      
Seniors Housing Operating | Roseville, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,540      
Initial cost of building and improvements 35,877      
Cost Capitalized Subsequent to Acquisition 1,628      
Carrying amount of land and land improvements 1,648      
Carrying amount of building and improvements 37,397      
Accumulated depreciation 10,212      
Seniors Housing Operating | Roseville, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 16      
Initial cost of building and improvements 23      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 16      
Carrying amount of building and improvements 23      
Accumulated depreciation 2      
Seniors Housing Operating | Roseville, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,300      
Initial cost of building and improvements 41,652      
Cost Capitalized Subsequent to Acquisition 7,069      
Carrying amount of land and land improvements 3,300      
Carrying amount of building and improvements 48,721      
Accumulated depreciation 10,866      
Seniors Housing Operating | Roswell, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,107      
Initial cost of building and improvements 9,627      
Cost Capitalized Subsequent to Acquisition 3,764      
Carrying amount of land and land improvements 1,114      
Carrying amount of building and improvements 13,384      
Accumulated depreciation 9,130      
Seniors Housing Operating | Roswell, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,080      
Initial cost of building and improvements 6,486      
Cost Capitalized Subsequent to Acquisition 3,773      
Carrying amount of land and land improvements 2,380      
Carrying amount of building and improvements 9,959      
Accumulated depreciation 2,921      
Seniors Housing Operating | Round Rock, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,358      
Initial cost of building and improvements 14,856      
Cost Capitalized Subsequent to Acquisition 621      
Carrying amount of land and land improvements 2,358      
Carrying amount of building and improvements 15,477      
Accumulated depreciation 528      
Seniors Housing Operating | Rowlett, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,612      
Initial cost of building and improvements 21,319      
Cost Capitalized Subsequent to Acquisition 223      
Carrying amount of land and land improvements 1,612      
Carrying amount of building and improvements 21,542      
Accumulated depreciation 941      
Seniors Housing Operating | Sabre Springs, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 46,970      
Carrying amount of land and land improvements 3,726      
Carrying amount of building and improvements 43,244      
Accumulated depreciation 3,455      
Seniors Housing Operating | Sacramento, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 940      
Initial cost of building and improvements 14,781      
Cost Capitalized Subsequent to Acquisition 2,273      
Carrying amount of land and land improvements 952      
Carrying amount of building and improvements 17,042      
Accumulated depreciation 5,562      
Seniors Housing Operating | Sacramento, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,300      
Initial cost of building and improvements 23,394      
Cost Capitalized Subsequent to Acquisition 2,395      
Carrying amount of land and land improvements 1,369      
Carrying amount of building and improvements 25,720      
Accumulated depreciation 7,335      
Seniors Housing Operating | Saginaw, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,483      
Initial cost of building and improvements 16,182      
Cost Capitalized Subsequent to Acquisition 1,733      
Carrying amount of land and land improvements 1,483      
Carrying amount of building and improvements 17,915      
Accumulated depreciation 643      
Seniors Housing Operating | Saint-Lambert, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 32,254      
Initial cost of land and land improvements 10,259      
Initial cost of building and improvements 61,903      
Cost Capitalized Subsequent to Acquisition 11,500      
Carrying amount of land and land improvements 11,308      
Carrying amount of building and improvements 72,354      
Accumulated depreciation 21,029      
Seniors Housing Operating | Salem, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 918      
Initial cost of building and improvements 9,659      
Cost Capitalized Subsequent to Acquisition 878      
Carrying amount of land and land improvements 918      
Carrying amount of building and improvements 10,537      
Accumulated depreciation 1,140      
Seniors Housing Operating | Salem, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,227      
Initial cost of building and improvements 8,632      
Cost Capitalized Subsequent to Acquisition 800      
Carrying amount of land and land improvements 1,227      
Carrying amount of building and improvements 9,432      
Accumulated depreciation 1,033      
Seniors Housing Operating | Salem, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,876      
Initial cost of building and improvements 18,100      
Cost Capitalized Subsequent to Acquisition 1,724      
Carrying amount of land and land improvements 2,876      
Carrying amount of building and improvements 19,824      
Accumulated depreciation 690      
Seniors Housing Operating | Salinas, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,110      
Initial cost of building and improvements 41,424      
Cost Capitalized Subsequent to Acquisition 11,316      
Carrying amount of land and land improvements 5,150      
Carrying amount of building and improvements 52,700      
Accumulated depreciation 12,470      
Seniors Housing Operating | Salisbury, UKK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,720      
Initial cost of building and improvements 15,269      
Cost Capitalized Subsequent to Acquisition 2,228      
Carrying amount of land and land improvements 2,977      
Carrying amount of building and improvements 17,240      
Accumulated depreciation 3,676      
Seniors Housing Operating | Salt Lake City, UT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,360      
Initial cost of building and improvements 19,691      
Cost Capitalized Subsequent to Acquisition 1,145      
Carrying amount of land and land improvements 1,396      
Carrying amount of building and improvements 20,800      
Accumulated depreciation 7,855      
Seniors Housing Operating | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,120      
Initial cost of building and improvements 28,169      
Cost Capitalized Subsequent to Acquisition 2,694      
Carrying amount of land and land improvements 6,120      
Carrying amount of building and improvements 30,863      
Accumulated depreciation 8,709      
Seniors Housing Operating | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,045      
Initial cost of building and improvements 58,048      
Cost Capitalized Subsequent to Acquisition 3,286      
Carrying amount of land and land improvements 5,045      
Carrying amount of building and improvements 61,334      
Accumulated depreciation 9,718      
Seniors Housing Operating | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 11,686      
Initial cost of building and improvements 69,930      
Cost Capitalized Subsequent to Acquisition 3,634      
Carrying amount of land and land improvements 11,686      
Carrying amount of building and improvements 73,564      
Accumulated depreciation 10,157      
Seniors Housing Operating | San Diego, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,810      
Initial cost of building and improvements 63,078      
Cost Capitalized Subsequent to Acquisition 7,420      
Carrying amount of land and land improvements 5,810      
Carrying amount of building and improvements 70,498      
Accumulated depreciation 22,850      
Seniors Housing Operating | San Diego, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,000      
Initial cost of building and improvements 27,164      
Cost Capitalized Subsequent to Acquisition 2,213      
Carrying amount of land and land improvements 3,016      
Carrying amount of building and improvements 29,361      
Accumulated depreciation 7,917      
Seniors Housing Operating | San Diego, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 28,852      
Initial cost of land and land improvements 4,179      
Initial cost of building and improvements 40,328      
Cost Capitalized Subsequent to Acquisition 1,920      
Carrying amount of land and land improvements 4,179      
Carrying amount of building and improvements 42,248      
Accumulated depreciation 4,241      
Seniors Housing Operating | San Francisco, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,920      
Initial cost of building and improvements 91,639      
Cost Capitalized Subsequent to Acquisition 13,980      
Carrying amount of land and land improvements 5,920      
Carrying amount of building and improvements 105,619      
Accumulated depreciation 23,392      
Seniors Housing Operating | San Francisco, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 11,800      
Initial cost of building and improvements 77,214      
Cost Capitalized Subsequent to Acquisition 10,905      
Carrying amount of land and land improvements 11,800      
Carrying amount of building and improvements 88,119      
Accumulated depreciation 19,413      
Seniors Housing Operating | San Gabriel, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,120      
Initial cost of building and improvements 15,566      
Cost Capitalized Subsequent to Acquisition 1,519      
Carrying amount of land and land improvements 3,170      
Carrying amount of building and improvements 17,035      
Accumulated depreciation 5,232      
Seniors Housing Operating | San Jose, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,280      
Initial cost of building and improvements 46,823      
Cost Capitalized Subsequent to Acquisition 5,656      
Carrying amount of land and land improvements 3,280      
Carrying amount of building and improvements 52,479      
Accumulated depreciation 15,796      
Seniors Housing Operating | San Jose, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 11,900      
Initial cost of building and improvements 27,647      
Cost Capitalized Subsequent to Acquisition 5,559      
Carrying amount of land and land improvements 11,966      
Carrying amount of building and improvements 33,140      
Accumulated depreciation 7,834      
Seniors Housing Operating | San Rafael, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,620      
Initial cost of building and improvements 27,392      
Cost Capitalized Subsequent to Acquisition 4,284      
Carrying amount of land and land improvements 1,620      
Carrying amount of building and improvements 31,676      
Accumulated depreciation 6,424      
Seniors Housing Operating | San Ramon, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 8,700      
Initial cost of building and improvements 72,223      
Cost Capitalized Subsequent to Acquisition 10,336      
Carrying amount of land and land improvements 8,779      
Carrying amount of building and improvements 82,480      
Accumulated depreciation 18,062      
Seniors Housing Operating | Sandy Springs, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,214      
Initial cost of building and improvements 8,360      
Cost Capitalized Subsequent to Acquisition 1,595      
Carrying amount of land and land improvements 2,220      
Carrying amount of building and improvements 9,949      
Accumulated depreciation 3,969      
Seniors Housing Operating | Santa Ana, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,077      
Initial cost of building and improvements 2,690      
Cost Capitalized Subsequent to Acquisition 455      
Carrying amount of land and land improvements 2,077      
Carrying amount of building and improvements 3,145      
Accumulated depreciation 315      
Seniors Housing Operating | Santa Monica, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 15,820      
Initial cost of land and land improvements 5,250      
Initial cost of building and improvements 28,340      
Cost Capitalized Subsequent to Acquisition 1,412      
Carrying amount of land and land improvements 5,266      
Carrying amount of building and improvements 29,736      
Accumulated depreciation 8,523      
Seniors Housing Operating | Santa Rosa, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,250      
Initial cost of building and improvements 26,273      
Cost Capitalized Subsequent to Acquisition 3,930      
Carrying amount of land and land improvements 2,292      
Carrying amount of building and improvements 30,161      
Accumulated depreciation 6,371      
Seniors Housing Operating | Sarasota, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 19,660      
Initial cost of building and improvements 93,373      
Cost Capitalized Subsequent to Acquisition 3,416      
Carrying amount of land and land improvements 19,660      
Carrying amount of building and improvements 96,789      
Accumulated depreciation 520      
Seniors Housing Operating | Saskatoon, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 3,462      
Initial cost of land and land improvements 981      
Initial cost of building and improvements 13,905      
Cost Capitalized Subsequent to Acquisition 2,049      
Carrying amount of land and land improvements 1,062      
Carrying amount of building and improvements 15,873      
Accumulated depreciation 3,993      
Seniors Housing Operating | Saskatoon, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 12,645      
Initial cost of land and land improvements 1,382      
Initial cost of building and improvements 17,609      
Cost Capitalized Subsequent to Acquisition 2,690      
Carrying amount of land and land improvements 1,636      
Carrying amount of building and improvements 20,045      
Accumulated depreciation 5,376      
Seniors Housing Operating | Savannah, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,733      
Initial cost of building and improvements 15,089      
Cost Capitalized Subsequent to Acquisition 1,129      
Carrying amount of land and land improvements 1,733      
Carrying amount of building and improvements 16,218      
Accumulated depreciation 419      
Seniors Housing Operating | Schaumburg, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,460      
Initial cost of building and improvements 22,863      
Cost Capitalized Subsequent to Acquisition 1,628      
Carrying amount of land and land improvements 2,497      
Carrying amount of building and improvements 24,454      
Accumulated depreciation 7,817      
Seniors Housing Operating | Scottsdale, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,500      
Initial cost of building and improvements 3,890      
Cost Capitalized Subsequent to Acquisition 1,591      
Carrying amount of land and land improvements 2,500      
Carrying amount of building and improvements 5,481      
Accumulated depreciation 1,961      
Seniors Housing Operating | Scranton, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 896      
Initial cost of building and improvements 10,591      
Cost Capitalized Subsequent to Acquisition 695      
Carrying amount of land and land improvements 896      
Carrying amount of building and improvements 11,286      
Accumulated depreciation 1,642      
Seniors Housing Operating | Seal Beach, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,204      
Initial cost of building and improvements 72,954      
Cost Capitalized Subsequent to Acquisition 3,417      
Carrying amount of land and land improvements 6,271      
Carrying amount of building and improvements 76,304      
Accumulated depreciation 25,077      
Seniors Housing Operating | Seattle, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,190      
Initial cost of building and improvements 9,350      
Cost Capitalized Subsequent to Acquisition 2,410      
Carrying amount of land and land improvements 5,199      
Carrying amount of building and improvements 11,751      
Accumulated depreciation 4,659      
Seniors Housing Operating | Seattle, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 27,180      
Initial cost of land and land improvements 10,670      
Initial cost of building and improvements 37,291      
Cost Capitalized Subsequent to Acquisition 2,043      
Carrying amount of land and land improvements 10,700      
Carrying amount of building and improvements 39,304      
Accumulated depreciation 15,468      
Seniors Housing Operating | Seattle, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,150      
Initial cost of building and improvements 19,887      
Cost Capitalized Subsequent to Acquisition 2,855      
Carrying amount of land and land improvements 1,150      
Carrying amount of building and improvements 22,742      
Accumulated depreciation 4,902      
Seniors Housing Operating | Selbyville, DE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 750      
Initial cost of building and improvements 25,912      
Cost Capitalized Subsequent to Acquisition 1,118      
Carrying amount of land and land improvements 769      
Carrying amount of building and improvements 27,011      
Accumulated depreciation 7,811      
Seniors Housing Operating | Sevenoaks, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,181      
Initial cost of building and improvements 40,240      
Cost Capitalized Subsequent to Acquisition 7,500      
Carrying amount of land and land improvements 6,763      
Carrying amount of building and improvements 47,158      
Accumulated depreciation 15,831      
Seniors Housing Operating | Severna Park, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 67,623      
Cost Capitalized Subsequent to Acquisition 6,273      
Carrying amount of land and land improvements 44      
Carrying amount of building and improvements 73,852      
Accumulated depreciation 14,781      
Seniors Housing Operating | Shelby Township, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 13,180      
Initial cost of land and land improvements 1,040      
Initial cost of building and improvements 26,344      
Cost Capitalized Subsequent to Acquisition 1,520      
Carrying amount of land and land improvements 1,110      
Carrying amount of building and improvements 27,794      
Accumulated depreciation 8,080      
Seniors Housing Operating | Sherman, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 700      
Initial cost of building and improvements 5,221      
Cost Capitalized Subsequent to Acquisition 293      
Carrying amount of land and land improvements 700      
Carrying amount of building and improvements 5,514      
Accumulated depreciation 2,130      
Seniors Housing Operating | Sherman, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,712      
Initial cost of building and improvements 20,304      
Cost Capitalized Subsequent to Acquisition 2,263      
Carrying amount of land and land improvements 1,712      
Carrying amount of building and improvements 22,567      
Accumulated depreciation 376      
Seniors Housing Operating | Shrewsbury, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,120      
Initial cost of building and improvements 38,116      
Cost Capitalized Subsequent to Acquisition 3,292      
Carrying amount of land and land improvements 2,160      
Carrying amount of building and improvements 41,368      
Accumulated depreciation 11,780      
Seniors Housing Operating | Sidcup, UKI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,446      
Initial cost of building and improvements 56,570      
Cost Capitalized Subsequent to Acquisition 10,866      
Carrying amount of land and land improvements 8,181      
Carrying amount of building and improvements 66,701      
Accumulated depreciation 21,397      
Seniors Housing Operating | Silver Spring, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 64,547      
Carrying amount of land and land improvements 3,436      
Carrying amount of building and improvements 61,111      
Accumulated depreciation 4,841      
Seniors Housing Operating | Simi Valley, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,200      
Initial cost of building and improvements 16,664      
Cost Capitalized Subsequent to Acquisition 2,481      
Carrying amount of land and land improvements 3,340      
Carrying amount of building and improvements 19,005      
Accumulated depreciation 6,573      
Seniors Housing Operating | Simi Valley, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,510      
Initial cost of building and improvements 51,406      
Cost Capitalized Subsequent to Acquisition 8,663      
Carrying amount of land and land improvements 5,510      
Carrying amount of building and improvements 60,069      
Accumulated depreciation 14,220      
Seniors Housing Operating | Solihull, UKG        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,070      
Initial cost of building and improvements 43,297      
Cost Capitalized Subsequent to Acquisition 8,755      
Carrying amount of land and land improvements 5,549      
Carrying amount of building and improvements 51,573      
Accumulated depreciation 16,606      
Seniors Housing Operating | Solihull, UKG        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,571      
Initial cost of building and improvements 26,053      
Cost Capitalized Subsequent to Acquisition 3,738      
Carrying amount of land and land improvements 3,962      
Carrying amount of building and improvements 29,400      
Accumulated depreciation 9,045      
Seniors Housing Operating | Solihull, UKG        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,851      
Initial cost of building and improvements 10,585      
Cost Capitalized Subsequent to Acquisition 1,885      
Carrying amount of land and land improvements 2,025      
Carrying amount of building and improvements 12,296      
Accumulated depreciation 1,900      
Seniors Housing Operating | Sonning, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,644      
Initial cost of building and improvements 42,155      
Cost Capitalized Subsequent to Acquisition 5,849      
Carrying amount of land and land improvements 6,206      
Carrying amount of building and improvements 47,442      
Accumulated depreciation 13,924      
Seniors Housing Operating | Sonoma, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,100      
Initial cost of building and improvements 18,400      
Cost Capitalized Subsequent to Acquisition 5,509      
Carrying amount of land and land improvements 1,109      
Carrying amount of building and improvements 23,900      
Accumulated depreciation 9,583      
Seniors Housing Operating | Sonoma, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,820      
Initial cost of building and improvements 21,890      
Cost Capitalized Subsequent to Acquisition 3,808      
Carrying amount of land and land improvements 2,819      
Carrying amount of building and improvements 25,699      
Accumulated depreciation 5,465      
Seniors Housing Operating | South Jordan, UT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,646      
Initial cost of building and improvements 42,705      
Cost Capitalized Subsequent to Acquisition 4,011      
Carrying amount of land and land improvements 4,646      
Carrying amount of building and improvements 46,716      
Accumulated depreciation 5,973      
Seniors Housing Operating | Southlake, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,207      
Initial cost of building and improvements 56,805      
Cost Capitalized Subsequent to Acquisition 7,624      
Carrying amount of land and land improvements 6,207      
Carrying amount of building and improvements 64,429      
Accumulated depreciation 12,416      
Seniors Housing Operating | Spokane, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,200      
Initial cost of building and improvements 25,064      
Cost Capitalized Subsequent to Acquisition 3,156      
Carrying amount of land and land improvements 3,200      
Carrying amount of building and improvements 28,220      
Accumulated depreciation 9,240      
Seniors Housing Operating | Spokane, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,580      
Initial cost of building and improvements 25,342      
Cost Capitalized Subsequent to Acquisition 3,701      
Carrying amount of land and land improvements 2,580      
Carrying amount of building and improvements 29,043      
Accumulated depreciation 8,273      
Seniors Housing Operating | Spokane, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,334      
Initial cost of building and improvements 11,155      
Cost Capitalized Subsequent to Acquisition 842      
Carrying amount of land and land improvements 1,334      
Carrying amount of building and improvements 11,997      
Accumulated depreciation 374      
Seniors Housing Operating | Springdale, AR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,950      
Initial cost of building and improvements 24,851      
Cost Capitalized Subsequent to Acquisition 3,386      
Carrying amount of land and land improvements 2,950      
Carrying amount of building and improvements 28,237      
Accumulated depreciation 861      
Seniors Housing Operating | Springfield, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,166      
Initial cost of building and improvements 17,675      
Cost Capitalized Subsequent to Acquisition 1,092      
Carrying amount of land and land improvements 1,166      
Carrying amount of building and improvements 18,767      
Accumulated depreciation 513      
Seniors Housing Operating | Springfield, MO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,667      
Initial cost of building and improvements 17,030      
Cost Capitalized Subsequent to Acquisition 942      
Carrying amount of land and land improvements 1,667      
Carrying amount of building and improvements 17,972      
Accumulated depreciation 477      
Seniors Housing Operating | St. Albert, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,248      
Initial cost of land and land improvements 1,145      
Initial cost of building and improvements 17,863      
Cost Capitalized Subsequent to Acquisition 2,361      
Carrying amount of land and land improvements 1,282      
Carrying amount of building and improvements 20,087      
Accumulated depreciation 6,723      
Seniors Housing Operating | St. John's, NL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,893      
Initial cost of land and land improvements 706      
Initial cost of building and improvements 11,765      
Cost Capitalized Subsequent to Acquisition 909      
Carrying amount of land and land improvements 759      
Carrying amount of building and improvements 12,621      
Accumulated depreciation 2,437      
Seniors Housing Operating | St. Petersburg, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 9,261      
Initial cost of building and improvements 25,205      
Cost Capitalized Subsequent to Acquisition 14,862      
Carrying amount of land and land improvements 9,261      
Carrying amount of building and improvements 40,067      
Accumulated depreciation 534      
Seniors Housing Operating | Stephenville, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,072      
Initial cost of building and improvements 3,234      
Cost Capitalized Subsequent to Acquisition 230      
Carrying amount of land and land improvements 1,072      
Carrying amount of building and improvements 3,464      
Accumulated depreciation 251      
Seniors Housing Operating | Stittsville, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 3,814      
Initial cost of land and land improvements 1,175      
Initial cost of building and improvements 17,397      
Cost Capitalized Subsequent to Acquisition 2,295      
Carrying amount of land and land improvements 1,344      
Carrying amount of building and improvements 19,523      
Accumulated depreciation 5,366      
Seniors Housing Operating | Stockport, UKD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,369      
Initial cost of building and improvements 25,018      
Cost Capitalized Subsequent to Acquisition 3,677      
Carrying amount of land and land improvements 4,802      
Carrying amount of building and improvements 28,262      
Accumulated depreciation 9,195      
Seniors Housing Operating | Stockton, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,280      
Initial cost of building and improvements 5,983      
Cost Capitalized Subsequent to Acquisition 2,442      
Carrying amount of land and land improvements 2,372      
Carrying amount of building and improvements 8,333      
Accumulated depreciation 2,868      
Seniors Housing Operating | Strongsville, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,128      
Initial cost of building and improvements 10,940      
Cost Capitalized Subsequent to Acquisition 656      
Carrying amount of land and land improvements 1,128      
Carrying amount of building and improvements 11,596      
Accumulated depreciation 1,914      
Seniors Housing Operating | Strongsville, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,577      
Initial cost of building and improvements 12,180      
Cost Capitalized Subsequent to Acquisition 1,283      
Carrying amount of land and land improvements 2,577      
Carrying amount of building and improvements 13,463      
Accumulated depreciation 497      
Seniors Housing Operating | Stuart, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,276      
Initial cost of building and improvements 24,182      
Cost Capitalized Subsequent to Acquisition 730      
Carrying amount of land and land improvements 5,276      
Carrying amount of building and improvements 24,912      
Accumulated depreciation 2,746      
Seniors Housing Operating | Studio City, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,006      
Initial cost of building and improvements 25,307      
Cost Capitalized Subsequent to Acquisition 1,800      
Carrying amount of land and land improvements 4,124      
Carrying amount of building and improvements 26,989      
Accumulated depreciation 8,577      
Seniors Housing Operating | Suffield, CT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,439      
Initial cost of building and improvements 31,660      
Cost Capitalized Subsequent to Acquisition 2,392      
Carrying amount of land and land improvements 4,439      
Carrying amount of building and improvements 34,052      
Accumulated depreciation 4,866      
Seniors Housing Operating | Sugar Land, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 960      
Initial cost of building and improvements 31,423      
Cost Capitalized Subsequent to Acquisition 1,298      
Carrying amount of land and land improvements 960      
Carrying amount of building and improvements 32,721      
Accumulated depreciation 10,642      
Seniors Housing Operating | Sugar Land, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,272      
Initial cost of building and improvements 60,493      
Cost Capitalized Subsequent to Acquisition 6,575      
Carrying amount of land and land improvements 4,272      
Carrying amount of building and improvements 67,068      
Accumulated depreciation 13,303      
Seniors Housing Operating | Summerville, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,175      
Initial cost of building and improvements 17,273      
Cost Capitalized Subsequent to Acquisition 744      
Carrying amount of land and land improvements 2,175      
Carrying amount of building and improvements 18,017      
Accumulated depreciation 228      
Seniors Housing Operating | Summit, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,080      
Initial cost of building and improvements 14,152      
Cost Capitalized Subsequent to Acquisition 182      
Carrying amount of land and land improvements 3,080      
Carrying amount of building and improvements 14,334      
Accumulated depreciation 4,232      
Seniors Housing Operating | Sun City West, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,250      
Initial cost of building and improvements 21,778      
Cost Capitalized Subsequent to Acquisition 2,999      
Carrying amount of land and land improvements 1,250      
Carrying amount of building and improvements 24,777      
Accumulated depreciation 6,565      
Seniors Housing Operating | Sunninghill, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 11,632      
Initial cost of building and improvements 42,233      
Cost Capitalized Subsequent to Acquisition 3,532      
Carrying amount of land and land improvements 12,312      
Carrying amount of building and improvements 45,085      
Accumulated depreciation 5,582      
Seniors Housing Operating | Sunnyvale, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,420      
Initial cost of building and improvements 41,682      
Cost Capitalized Subsequent to Acquisition 3,652      
Carrying amount of land and land improvements 5,420      
Carrying amount of building and improvements 45,334      
Accumulated depreciation 14,120      
Seniors Housing Operating | Surrey, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,700      
Initial cost of land and land improvements 3,605      
Initial cost of building and improvements 18,818      
Cost Capitalized Subsequent to Acquisition 3,255      
Carrying amount of land and land improvements 3,899      
Carrying amount of building and improvements 21,779      
Accumulated depreciation 7,749      
Seniors Housing Operating | Surrey, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,459      
Initial cost of land and land improvements 4,552      
Initial cost of building and improvements 22,338      
Cost Capitalized Subsequent to Acquisition 4,431      
Carrying amount of land and land improvements 4,943      
Carrying amount of building and improvements 26,378      
Accumulated depreciation 9,715      
Seniors Housing Operating | Sutton, UKI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,096      
Initial cost of building and improvements 14,532      
Cost Capitalized Subsequent to Acquisition 3,016      
Carrying amount of land and land improvements 4,485      
Carrying amount of building and improvements 17,159      
Accumulated depreciation 2,435      
Seniors Housing Operating | Sutton Coldfield, UKG        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,807      
Initial cost of building and improvements 11,313      
Cost Capitalized Subsequent to Acquisition 2,057      
Carrying amount of land and land improvements 3,071      
Carrying amount of building and improvements 13,106      
Accumulated depreciation 1,858      
Seniors Housing Operating | Suwanee, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,560      
Initial cost of building and improvements 11,538      
Cost Capitalized Subsequent to Acquisition 1,754      
Carrying amount of land and land improvements 1,560      
Carrying amount of building and improvements 13,292      
Accumulated depreciation 4,702      
Seniors Housing Operating | Sway, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,145      
Initial cost of building and improvements 15,508      
Cost Capitalized Subsequent to Acquisition 3,148      
Carrying amount of land and land improvements 4,595      
Carrying amount of building and improvements 18,206      
Accumulated depreciation 5,004      
Seniors Housing Operating | Swift Current, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 492      
Initial cost of building and improvements 10,119      
Cost Capitalized Subsequent to Acquisition 1,444      
Carrying amount of land and land improvements 539      
Carrying amount of building and improvements 11,516      
Accumulated depreciation 3,495      
Seniors Housing Operating | Sycamore, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,033      
Initial cost of building and improvements 10,666      
Cost Capitalized Subsequent to Acquisition 735      
Carrying amount of land and land improvements 1,033      
Carrying amount of building and improvements 11,401      
Accumulated depreciation 599      
Seniors Housing Operating | Sylvania, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,205      
Initial cost of building and improvements 11,991      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,205      
Carrying amount of building and improvements 11,991      
Accumulated depreciation 1,189      
Seniors Housing Operating | Syracuse, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,440      
Initial cost of building and improvements 11,675      
Cost Capitalized Subsequent to Acquisition 863      
Carrying amount of land and land improvements 1,440      
Carrying amount of building and improvements 12,538      
Accumulated depreciation 1,947      
Seniors Housing Operating | Tacoma, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,170      
Initial cost of building and improvements 73,377      
Cost Capitalized Subsequent to Acquisition 18,249      
Carrying amount of land and land improvements 4,170      
Carrying amount of building and improvements 91,626      
Accumulated depreciation 23,675      
Seniors Housing Operating | Tarboro, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,651      
Initial cost of building and improvements 3,151      
Cost Capitalized Subsequent to Acquisition 8,024      
Carrying amount of land and land improvements 1,651      
Carrying amount of building and improvements 11,175      
Accumulated depreciation 284      
Seniors Housing Operating | Taylor, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,942      
Initial cost of building and improvements 12,011      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,942      
Carrying amount of building and improvements 12,011      
Accumulated depreciation 910      
Seniors Housing Operating | Texarkana, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,403      
Initial cost of building and improvements 7,111      
Cost Capitalized Subsequent to Acquisition 401      
Carrying amount of land and land improvements 1,403      
Carrying amount of building and improvements 7,512      
Accumulated depreciation 256      
Seniors Housing Operating | The Woodlands, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 480      
Initial cost of building and improvements 12,379      
Cost Capitalized Subsequent to Acquisition 956      
Carrying amount of land and land improvements 480      
Carrying amount of building and improvements 13,335      
Accumulated depreciation 4,182      
Seniors Housing Operating | Toms River, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,610      
Initial cost of building and improvements 34,627      
Cost Capitalized Subsequent to Acquisition 1,636      
Carrying amount of land and land improvements 1,695      
Carrying amount of building and improvements 36,178      
Accumulated depreciation 10,593      
Seniors Housing Operating | Tonawanda, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,554      
Initial cost of building and improvements 13,332      
Cost Capitalized Subsequent to Acquisition 1,252      
Carrying amount of land and land improvements 1,554      
Carrying amount of building and improvements 14,584      
Accumulated depreciation 2,416      
Seniors Housing Operating | Tonawanda, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,460      
Initial cost of building and improvements 12,564      
Cost Capitalized Subsequent to Acquisition 1,428      
Carrying amount of land and land improvements 2,460      
Carrying amount of building and improvements 13,992      
Accumulated depreciation 2,520      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 18,236      
Initial cost of land and land improvements 2,927      
Initial cost of building and improvements 20,713      
Cost Capitalized Subsequent to Acquisition 5,064      
Carrying amount of land and land improvements 3,203      
Carrying amount of building and improvements 25,501      
Accumulated depreciation 5,045      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 6,790      
Initial cost of land and land improvements 5,082      
Initial cost of building and improvements 25,493      
Cost Capitalized Subsequent to Acquisition 4,239      
Carrying amount of land and land improvements 5,562      
Carrying amount of building and improvements 29,252      
Accumulated depreciation 7,893      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 12,122      
Initial cost of land and land improvements 2,008      
Initial cost of building and improvements 19,620      
Cost Capitalized Subsequent to Acquisition 4,312      
Carrying amount of land and land improvements 2,119      
Carrying amount of building and improvements 23,821      
Accumulated depreciation 4,935      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 34,959      
Initial cost of land and land improvements 5,132      
Initial cost of building and improvements 41,657      
Cost Capitalized Subsequent to Acquisition 7,465      
Carrying amount of land and land improvements 5,581      
Carrying amount of building and improvements 48,673      
Accumulated depreciation 14,584      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,360      
Initial cost of land and land improvements 2,480      
Initial cost of building and improvements 7,571      
Cost Capitalized Subsequent to Acquisition 2,553      
Carrying amount of land and land improvements 2,688      
Carrying amount of building and improvements 9,916      
Accumulated depreciation 2,598      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,489      
Initial cost of land and land improvements 1,079      
Initial cost of building and improvements 5,364      
Cost Capitalized Subsequent to Acquisition 955      
Carrying amount of land and land improvements 1,133      
Carrying amount of building and improvements 6,265      
Accumulated depreciation 1,887      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 6,853      
Initial cost of land and land improvements 2,513      
Initial cost of building and improvements 19,695      
Cost Capitalized Subsequent to Acquisition 2,687      
Carrying amount of land and land improvements 2,757      
Carrying amount of building and improvements 22,138      
Accumulated depreciation 5,712      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 16,761      
Initial cost of land and land improvements 3,400      
Initial cost of building and improvements 32,757      
Cost Capitalized Subsequent to Acquisition 4,532      
Carrying amount of land and land improvements 3,820      
Carrying amount of building and improvements 36,869      
Accumulated depreciation 11,157      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,521      
Initial cost of land and land improvements 1,447      
Initial cost of building and improvements 3,918      
Cost Capitalized Subsequent to Acquisition 950      
Carrying amount of land and land improvements 1,595      
Carrying amount of building and improvements 4,720      
Accumulated depreciation 1,701      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 29,541      
Initial cost of land and land improvements 5,304      
Initial cost of building and improvements 53,488      
Cost Capitalized Subsequent to Acquisition 6,699      
Carrying amount of land and land improvements 5,785      
Carrying amount of building and improvements 59,706      
Accumulated depreciation 20,655      
Seniors Housing Operating | Torrance, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,497      
Initial cost of building and improvements 73,138      
Cost Capitalized Subsequent to Acquisition 373      
Carrying amount of land and land improvements 3,504      
Carrying amount of building and improvements 73,504      
Accumulated depreciation 10,171      
Seniors Housing Operating | Traverse City, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,042      
Initial cost of building and improvements 24,393      
Cost Capitalized Subsequent to Acquisition 1,934      
Carrying amount of land and land improvements 1,042      
Carrying amount of building and improvements 26,327      
Accumulated depreciation 785      
Seniors Housing Operating | Troy, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,787      
Initial cost of building and improvements 13,682      
Cost Capitalized Subsequent to Acquisition 441      
Carrying amount of land and land improvements 1,787      
Carrying amount of building and improvements 14,123      
Accumulated depreciation 362      
Seniors Housing Operating | Tuckahoe, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 9,341      
Initial cost of building and improvements 28,084      
Cost Capitalized Subsequent to Acquisition 2,994      
Carrying amount of land and land improvements 9,341      
Carrying amount of building and improvements 31,078      
Accumulated depreciation 201      
Seniors Housing Operating | Tucson, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 830      
Initial cost of building and improvements 6,179      
Cost Capitalized Subsequent to Acquisition 6,685      
Carrying amount of land and land improvements 830      
Carrying amount of building and improvements 12,864      
Accumulated depreciation 3,083      
Seniors Housing Operating | Tucson, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,010      
Initial cost of building and improvements 61,480      
Cost Capitalized Subsequent to Acquisition 17,814      
Carrying amount of land and land improvements 7,010      
Carrying amount of building and improvements 79,294      
Accumulated depreciation 681      
Seniors Housing Operating | Tulsa, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,330      
Initial cost of building and improvements 21,285      
Cost Capitalized Subsequent to Acquisition 2,261      
Carrying amount of land and land improvements 1,408      
Carrying amount of building and improvements 23,468      
Accumulated depreciation 10,094      
Seniors Housing Operating | Tulsa, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,500      
Initial cost of building and improvements 20,861      
Cost Capitalized Subsequent to Acquisition 14      
Carrying amount of land and land improvements 1,614      
Carrying amount of building and improvements 20,761      
Accumulated depreciation 9,723      
Seniors Housing Operating | Tulsa, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,161      
Initial cost of building and improvements 12,886      
Cost Capitalized Subsequent to Acquisition 1,333      
Carrying amount of land and land improvements 3,161      
Carrying amount of building and improvements 14,219      
Accumulated depreciation 507      
Seniors Housing Operating | Turlock, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,266      
Initial cost of building and improvements 13,002      
Cost Capitalized Subsequent to Acquisition 1,122      
Carrying amount of land and land improvements 2,266      
Carrying amount of building and improvements 14,124      
Accumulated depreciation 2,302      
Seniors Housing Operating | Tuscola, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 477      
Initial cost of building and improvements 5,305      
Cost Capitalized Subsequent to Acquisition 277      
Carrying amount of land and land improvements 477      
Carrying amount of building and improvements 5,582      
Accumulated depreciation 357      
Seniors Housing Operating | Twinsburg, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,042      
Initial cost of building and improvements 8,396      
Cost Capitalized Subsequent to Acquisition 543      
Carrying amount of land and land improvements 1,042      
Carrying amount of building and improvements 8,939      
Accumulated depreciation 1,536      
Seniors Housing Operating | Tyler, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 650      
Initial cost of building and improvements 5,268      
Cost Capitalized Subsequent to Acquisition 328      
Carrying amount of land and land improvements 650      
Carrying amount of building and improvements 5,596      
Accumulated depreciation 2,097      
Seniors Housing Operating | Tyler, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,306      
Initial cost of building and improvements 9,934      
Cost Capitalized Subsequent to Acquisition 581      
Carrying amount of land and land improvements 1,306      
Carrying amount of building and improvements 10,515      
Accumulated depreciation 436      
Seniors Housing Operating | Upland, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,160      
Initial cost of building and improvements 42,596      
Cost Capitalized Subsequent to Acquisition 217      
Carrying amount of land and land improvements 3,160      
Carrying amount of building and improvements 42,813      
Accumulated depreciation 8,631      
Seniors Housing Operating | Upper Providence, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,900      
Initial cost of building and improvements 28,195      
Cost Capitalized Subsequent to Acquisition 584      
Carrying amount of land and land improvements 1,908      
Carrying amount of building and improvements 28,771      
Accumulated depreciation 5,040      
Seniors Housing Operating | Upper St Claire, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,102      
Initial cost of building and improvements 13,455      
Cost Capitalized Subsequent to Acquisition 1,828      
Carrying amount of land and land improvements 1,153      
Carrying amount of building and improvements 15,232      
Accumulated depreciation 5,232      
Seniors Housing Operating | Urbandale, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,758      
Initial cost of building and improvements 4,764      
Cost Capitalized Subsequent to Acquisition 750      
Carrying amount of land and land improvements 1,758      
Carrying amount of building and improvements 5,514      
Accumulated depreciation 448      
Seniors Housing Operating | Vacaville, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 900      
Initial cost of building and improvements 17,100      
Cost Capitalized Subsequent to Acquisition 4,956      
Carrying amount of land and land improvements 900      
Carrying amount of building and improvements 22,056      
Accumulated depreciation 8,984      
Seniors Housing Operating | Vallejo, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,000      
Initial cost of building and improvements 18,000      
Cost Capitalized Subsequent to Acquisition 5,875      
Carrying amount of land and land improvements 4,030      
Carrying amount of building and improvements 23,845      
Accumulated depreciation 9,773      
Seniors Housing Operating | Vallejo, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,330      
Initial cost of building and improvements 15,407      
Cost Capitalized Subsequent to Acquisition 2,362      
Carrying amount of land and land improvements 2,330      
Carrying amount of building and improvements 17,769      
Accumulated depreciation 5,907      
Seniors Housing Operating | Vancouver, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,820      
Initial cost of building and improvements 19,042      
Cost Capitalized Subsequent to Acquisition 1,474      
Carrying amount of land and land improvements 1,821      
Carrying amount of building and improvements 20,515      
Accumulated depreciation 6,956      
Seniors Housing Operating | Vancouver, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,406      
Initial cost of building and improvements 14,328      
Cost Capitalized Subsequent to Acquisition 991      
Carrying amount of land and land improvements 1,406      
Carrying amount of building and improvements 15,319      
Accumulated depreciation 1,401      
Seniors Housing Operating | Vancouver, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,282      
Initial cost of building and improvements 6,572      
Cost Capitalized Subsequent to Acquisition 2,501      
Carrying amount of land and land improvements 7,772      
Carrying amount of building and improvements 8,583      
Accumulated depreciation 6,074      
Seniors Housing Operating | Vancouver, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 98      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 98      
Accumulated depreciation 4      
Seniors Housing Operating | Vancouver, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 48      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 48      
Accumulated depreciation 3      
Seniors Housing Operating | Vandalia, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 800      
Initial cost of building and improvements 4,959      
Cost Capitalized Subsequent to Acquisition 375      
Carrying amount of land and land improvements 800      
Carrying amount of building and improvements 5,334      
Accumulated depreciation 417      
Seniors Housing Operating | Vankleek Hill, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 389      
Initial cost of building and improvements 2,960      
Cost Capitalized Subsequent to Acquisition 691      
Carrying amount of land and land improvements 425      
Carrying amount of building and improvements 3,615      
Accumulated depreciation 1,201      
Seniors Housing Operating | Vaudreuil, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,614      
Initial cost of land and land improvements 1,852      
Initial cost of building and improvements 14,214      
Cost Capitalized Subsequent to Acquisition 2,529      
Carrying amount of land and land improvements 1,952      
Carrying amount of building and improvements 16,643      
Accumulated depreciation 3,973      
Seniors Housing Operating | Venice, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 13,646      
Initial cost of building and improvements 96,673      
Cost Capitalized Subsequent to Acquisition 5,553      
Carrying amount of land and land improvements 13,646      
Carrying amount of building and improvements 102,226      
Accumulated depreciation 1,765      
Seniors Housing Operating | Vero Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,930      
Initial cost of building and improvements 40,070      
Cost Capitalized Subsequent to Acquisition 26,757      
Carrying amount of land and land improvements 2,930      
Carrying amount of building and improvements 66,827      
Accumulated depreciation 29,929      
Seniors Housing Operating | Vero Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 722      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 722      
Accumulated depreciation 15      
Seniors Housing Operating | Victoria, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 6,210      
Initial cost of land and land improvements 2,856      
Initial cost of building and improvements 18,038      
Cost Capitalized Subsequent to Acquisition 2,324      
Carrying amount of land and land improvements 3,115      
Carrying amount of building and improvements 20,103      
Accumulated depreciation 6,547      
Seniors Housing Operating | Victoria, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 18,295      
Initial cost of land and land improvements 3,681      
Initial cost of building and improvements 15,774      
Cost Capitalized Subsequent to Acquisition 2,194      
Carrying amount of land and land improvements 3,990      
Carrying amount of building and improvements 17,659      
Accumulated depreciation 5,961      
Seniors Housing Operating | Victoria, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 17,001      
Initial cost of land and land improvements 2,476      
Initial cost of building and improvements 15,379      
Cost Capitalized Subsequent to Acquisition 2,715      
Carrying amount of land and land improvements 2,713      
Carrying amount of building and improvements 17,857      
Accumulated depreciation 3,714      
Seniors Housing Operating | Virginia Water, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,106      
Initial cost of building and improvements 29,937      
Cost Capitalized Subsequent to Acquisition 8,715      
Carrying amount of land and land improvements 5,958      
Carrying amount of building and improvements 39,800      
Accumulated depreciation 15,258      
Seniors Housing Operating | Visalia, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 868      
Initial cost of building and improvements 15,643      
Cost Capitalized Subsequent to Acquisition 1,212      
Carrying amount of land and land improvements 868      
Carrying amount of building and improvements 16,855      
Accumulated depreciation 521      
Seniors Housing Operating | Voorhees, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,700      
Initial cost of building and improvements 24,312      
Cost Capitalized Subsequent to Acquisition 2,902      
Carrying amount of land and land improvements 3,862      
Carrying amount of building and improvements 27,052      
Accumulated depreciation 6,621      
Seniors Housing Operating | Voorhees, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6      
Initial cost of building and improvements 69      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 6      
Carrying amount of building and improvements 69      
Accumulated depreciation 5      
Seniors Housing Operating | Waco, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,383      
Initial cost of building and improvements 10,519      
Cost Capitalized Subsequent to Acquisition 501      
Carrying amount of land and land improvements 1,383      
Carrying amount of building and improvements 11,020      
Accumulated depreciation 410      
Seniors Housing Operating | Wall, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,650      
Initial cost of building and improvements 25,350      
Cost Capitalized Subsequent to Acquisition 3,804      
Carrying amount of land and land improvements 1,694      
Carrying amount of building and improvements 29,110      
Accumulated depreciation 7,859      
Seniors Housing Operating | Walla Walla, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,414      
Initial cost of building and improvements 2,309      
Cost Capitalized Subsequent to Acquisition 90      
Carrying amount of land and land improvements 1,414      
Carrying amount of building and improvements 2,399      
Accumulated depreciation 105      
Seniors Housing Operating | Walnut Creek, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,700      
Initial cost of building and improvements 12,467      
Cost Capitalized Subsequent to Acquisition 3,785      
Carrying amount of land and land improvements 3,826      
Carrying amount of building and improvements 16,126      
Accumulated depreciation 5,818      
Seniors Housing Operating | Walnut Creek, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 10,320      
Initial cost of building and improvements 100,890      
Cost Capitalized Subsequent to Acquisition 18,671      
Carrying amount of land and land improvements 10,320      
Carrying amount of building and improvements 119,561      
Accumulated depreciation 28,158      
Seniors Housing Operating | Washington, DC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,000      
Initial cost of building and improvements 69,154      
Cost Capitalized Subsequent to Acquisition 3,549      
Carrying amount of land and land improvements 4,021      
Carrying amount of building and improvements 72,682      
Accumulated depreciation 20,498      
Seniors Housing Operating | Washington Court House, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 228      
Initial cost of building and improvements 2,301      
Cost Capitalized Subsequent to Acquisition 107      
Carrying amount of land and land improvements 228      
Carrying amount of building and improvements 2,408      
Accumulated depreciation 152      
Seniors Housing Operating | Watchung, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,920      
Initial cost of building and improvements 24,880      
Cost Capitalized Subsequent to Acquisition 2,394      
Carrying amount of land and land improvements 2,080      
Carrying amount of building and improvements 27,114      
Accumulated depreciation 7,583      
Seniors Housing Operating | Waterford, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 988      
Initial cost of building and improvements 12,384      
Cost Capitalized Subsequent to Acquisition 822      
Carrying amount of land and land improvements 988      
Carrying amount of building and improvements 13,206      
Accumulated depreciation 385      
Seniors Housing Operating | Waterville, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,574      
Initial cost of building and improvements 44,647      
Cost Capitalized Subsequent to Acquisition 1,050      
Carrying amount of land and land improvements 2,574      
Carrying amount of building and improvements 45,697      
Accumulated depreciation 2,619      
Seniors Housing Operating | Waukee, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,870      
Initial cost of building and improvements 31,878      
Cost Capitalized Subsequent to Acquisition 1,323      
Carrying amount of land and land improvements 1,900      
Carrying amount of building and improvements 33,171      
Accumulated depreciation 7,878      
Seniors Housing Operating | Waxahachie, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 650      
Initial cost of building and improvements 5,763      
Cost Capitalized Subsequent to Acquisition 356      
Carrying amount of land and land improvements 650      
Carrying amount of building and improvements 6,119      
Accumulated depreciation 2,168      
Seniors Housing Operating | Wayland, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,207      
Initial cost of building and improvements 27,462      
Cost Capitalized Subsequent to Acquisition 2,549      
Carrying amount of land and land improvements 1,364      
Carrying amount of building and improvements 29,854      
Accumulated depreciation 9,351      
Seniors Housing Operating | Weatherford, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 660      
Initial cost of building and improvements 5,261      
Cost Capitalized Subsequent to Acquisition 402      
Carrying amount of land and land improvements 660      
Carrying amount of building and improvements 5,663      
Accumulated depreciation 2,110      
Seniors Housing Operating | Webster Groves, MO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,790      
Initial cost of building and improvements 15,425      
Cost Capitalized Subsequent to Acquisition 2,894      
Carrying amount of land and land improvements 1,812      
Carrying amount of building and improvements 18,297      
Accumulated depreciation 6,092      
Seniors Housing Operating | Wellesley, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,690      
Initial cost of building and improvements 77,462      
Cost Capitalized Subsequent to Acquisition 916      
Carrying amount of land and land improvements 4,690      
Carrying amount of building and improvements 78,378      
Accumulated depreciation 17,602      
Seniors Housing Operating | West Babylon, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,960      
Initial cost of building and improvements 47,085      
Cost Capitalized Subsequent to Acquisition 2,822      
Carrying amount of land and land improvements 4,062      
Carrying amount of building and improvements 49,805      
Accumulated depreciation 14,009      
Seniors Housing Operating | West Bloomfield, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,040      
Initial cost of building and improvements 12,300      
Cost Capitalized Subsequent to Acquisition 1,035      
Carrying amount of land and land improvements 1,100      
Carrying amount of building and improvements 13,275      
Accumulated depreciation 4,119      
Seniors Housing Operating | West Chester Township, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,319      
Initial cost of building and improvements 47,857      
Cost Capitalized Subsequent to Acquisition 1,288      
Carrying amount of land and land improvements 2,319      
Carrying amount of building and improvements 49,145      
Accumulated depreciation 2,954      
Seniors Housing Operating | West Covina, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 111      
Initial cost of building and improvements 277      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 111      
Carrying amount of building and improvements 277      
Accumulated depreciation 3      
Seniors Housing Operating | West Hills, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,600      
Initial cost of building and improvements 7,521      
Cost Capitalized Subsequent to Acquisition 1,990      
Carrying amount of land and land improvements 2,658      
Carrying amount of building and improvements 9,453      
Accumulated depreciation 3,732      
Seniors Housing Operating | West Seneca, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,432      
Initial cost of building and improvements 6,684      
Cost Capitalized Subsequent to Acquisition 634      
Carrying amount of land and land improvements 1,432      
Carrying amount of building and improvements 7,318      
Accumulated depreciation 1,348      
Seniors Housing Operating | West Seneca, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,323      
Initial cost of building and improvements 7,547      
Cost Capitalized Subsequent to Acquisition 604      
Carrying amount of land and land improvements 1,323      
Carrying amount of building and improvements 8,151      
Accumulated depreciation 1,297      
Seniors Housing Operating | West Vancouver, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 16,805      
Initial cost of land and land improvements 7,059      
Initial cost of building and improvements 28,155      
Cost Capitalized Subsequent to Acquisition 7,637      
Carrying amount of land and land improvements 7,703      
Carrying amount of building and improvements 35,148      
Accumulated depreciation 10,353      
Seniors Housing Operating | Westbourne, UKK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,441      
Initial cost of building and improvements 41,420      
Cost Capitalized Subsequent to Acquisition 10,339      
Carrying amount of land and land improvements 5,956      
Carrying amount of building and improvements 51,244      
Accumulated depreciation 14,279      
Seniors Housing Operating | Westford, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,440      
Initial cost of building and improvements 32,607      
Cost Capitalized Subsequent to Acquisition 562      
Carrying amount of land and land improvements 1,468      
Carrying amount of building and improvements 33,141      
Accumulated depreciation 6,852      
Seniors Housing Operating | Weston, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,160      
Initial cost of building and improvements 3,018      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,160      
Carrying amount of building and improvements 3,018      
Accumulated depreciation 1,398      
Seniors Housing Operating | Westworth Village, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,060      
Initial cost of building and improvements 31,296      
Cost Capitalized Subsequent to Acquisition 103      
Carrying amount of land and land improvements 2,060      
Carrying amount of building and improvements 31,399      
Accumulated depreciation 5,821      
Seniors Housing Operating | Weybridge, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,899      
Initial cost of building and improvements 48,240      
Cost Capitalized Subsequent to Acquisition 6,189      
Carrying amount of land and land improvements 8,680      
Carrying amount of building and improvements 53,648      
Accumulated depreciation 17,135      
Seniors Housing Operating | Weymouth, UKK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,591      
Initial cost of building and improvements 16,551      
Cost Capitalized Subsequent to Acquisition 2,357      
Carrying amount of land and land improvements 2,873      
Carrying amount of building and improvements 18,626      
Accumulated depreciation 3,954      
Seniors Housing Operating | White Oak, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,304      
Initial cost of building and improvements 24,768      
Cost Capitalized Subsequent to Acquisition 3,224      
Carrying amount of land and land improvements 2,463      
Carrying amount of building and improvements 27,833      
Accumulated depreciation 8,036      
Seniors Housing Operating | Whitesboro, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,630      
Initial cost of building and improvements 12,001      
Cost Capitalized Subsequent to Acquisition 789      
Carrying amount of land and land improvements 1,630      
Carrying amount of building and improvements 12,790      
Accumulated depreciation 1,905      
Seniors Housing Operating | Willoughby, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,309      
Initial cost of building and improvements 10,540      
Cost Capitalized Subsequent to Acquisition 662      
Carrying amount of land and land improvements 1,309      
Carrying amount of building and improvements 11,202      
Accumulated depreciation 1,637      
Seniors Housing Operating | Wilmington, DE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,040      
Initial cost of building and improvements 23,338      
Cost Capitalized Subsequent to Acquisition 2,540      
Carrying amount of land and land improvements 1,244      
Carrying amount of building and improvements 25,674      
Accumulated depreciation 7,606      
Seniors Housing Operating | Wilmington, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,538      
Initial cost of building and improvements 26,208      
Cost Capitalized Subsequent to Acquisition 1,994      
Carrying amount of land and land improvements 1,538      
Carrying amount of building and improvements 28,202      
Accumulated depreciation 831      
Seniors Housing Operating | Winchester, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,009      
Initial cost of building and improvements 29,405      
Cost Capitalized Subsequent to Acquisition 4,135      
Carrying amount of land and land improvements 6,595      
Carrying amount of building and improvements 32,954      
Accumulated depreciation 10,155      
Seniors Housing Operating | Winnipeg, MB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 10,577      
Initial cost of land and land improvements 1,960      
Initial cost of building and improvements 38,612      
Cost Capitalized Subsequent to Acquisition 7,230      
Carrying amount of land and land improvements 2,242      
Carrying amount of building and improvements 45,560      
Accumulated depreciation 16,190      
Seniors Housing Operating | Winnipeg, MB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 24,100      
Initial cost of land and land improvements 1,276      
Initial cost of building and improvements 21,732      
Cost Capitalized Subsequent to Acquisition 3,534      
Carrying amount of land and land improvements 1,661      
Carrying amount of building and improvements 24,881      
Accumulated depreciation 7,039      
Seniors Housing Operating | Winnipeg, MB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,605      
Initial cost of land and land improvements 1,317      
Initial cost of building and improvements 15,609      
Cost Capitalized Subsequent to Acquisition 3,955      
Carrying amount of land and land improvements 1,448      
Carrying amount of building and improvements 19,433      
Accumulated depreciation 4,752      
Seniors Housing Operating | Woking, UKJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,990      
Initial cost of building and improvements 12,523      
Cost Capitalized Subsequent to Acquisition 1,444      
Carrying amount of land and land improvements 3,172      
Carrying amount of building and improvements 13,785      
Accumulated depreciation 1,646      
Seniors Housing Operating | Wolverhampton, UKG        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,941      
Initial cost of building and improvements 8,922      
Cost Capitalized Subsequent to Acquisition 1,709      
Carrying amount of land and land improvements 3,225      
Carrying amount of building and improvements 10,347      
Accumulated depreciation 4,322      
Seniors Housing Operating | Woodland Hills, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,400      
Initial cost of building and improvements 20,478      
Cost Capitalized Subsequent to Acquisition 1,551      
Carrying amount of land and land improvements 3,456      
Carrying amount of building and improvements 21,973      
Accumulated depreciation 7,130      
Seniors Housing Operating | Wyoming, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,373      
Initial cost of building and improvements 23,195      
Cost Capitalized Subsequent to Acquisition 2,124      
Carrying amount of land and land improvements 3,373      
Carrying amount of building and improvements 25,319      
Accumulated depreciation 859      
Seniors Housing Operating | Yakima, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,104      
Initial cost of building and improvements 10,030      
Cost Capitalized Subsequent to Acquisition 677      
Carrying amount of land and land improvements 1,104      
Carrying amount of building and improvements 10,707      
Accumulated depreciation 334      
Seniors Housing Operating | Yonkers, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,962      
Initial cost of building and improvements 50,107      
Cost Capitalized Subsequent to Acquisition 2,705      
Carrying amount of land and land improvements 4,074      
Carrying amount of building and improvements 52,700      
Accumulated depreciation 15,297      
Seniors Housing Operating | Yorkton, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 2,808      
Initial cost of land and land improvements 463      
Initial cost of building and improvements 8,760      
Cost Capitalized Subsequent to Acquisition 1,096      
Carrying amount of land and land improvements 503      
Carrying amount of building and improvements 9,816      
Accumulated depreciation $ 2,912