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Schedule III - Real Estate and Accumulated Depreciation - Seniors Housing (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances $ 2,222,445      
Initial cost of land and land improvements 4,157,359      
Initial cost of building and improvements 34,084,618      
Cost Capitalized Subsequent to Acquisition 8,207,202      
Carrying amount of land and land improvements 4,697,824      
Carrying amount of building and improvements 41,640,347      
Accumulated depreciation 9,274,814 $ 8,075,733 $ 6,910,114 $ 6,104,297
Wichita, KS 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 860      
Initial cost of building and improvements 8,873      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 860      
Carrying amount of building and improvements 8,873      
Accumulated depreciation 3,125      
Wichita, KS 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 260      
Initial cost of building and improvements 2,240      
Cost Capitalized Subsequent to Acquisition 137      
Carrying amount of land and land improvements 260      
Carrying amount of building and improvements 2,377      
Accumulated depreciation 568      
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 1,774      
Initial cost of building and improvements 8,653      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,774      
Carrying amount of building and improvements 8,653      
Accumulated depreciation 1,322      
Wilmington, NC 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 210      
Initial cost of building and improvements 2,991      
Cost Capitalized Subsequent to Acquisition 56      
Carrying amount of land and land improvements 210      
Carrying amount of building and improvements 3,047      
Accumulated depreciation 1,912      
Wilmington, NC 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 400      
Initial cost of building and improvements 15,355      
Cost Capitalized Subsequent to Acquisition 592      
Carrying amount of land and land improvements 400      
Carrying amount of building and improvements 15,947      
Accumulated depreciation 4,118      
Wolverhampton, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,573      
Initial cost of building and improvements 6,678      
Cost Capitalized Subsequent to Acquisition 272      
Carrying amount of land and land improvements 1,625      
Carrying amount of building and improvements 6,898      
Accumulated depreciation 1,922      
Seniors Housing Operating        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 1,760,778      
Initial cost of land and land improvements 2,296,482      
Initial cost of building and improvements 20,037,488      
Cost Capitalized Subsequent to Acquisition 4,923,531      
Carrying amount of land and land improvements 2,620,060      
Carrying amount of building and improvements 24,637,441      
Accumulated depreciation 5,754,186      
Seniors Housing Operating | Adderbury, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,144      
Initial cost of building and improvements 12,549      
Cost Capitalized Subsequent to Acquisition 276      
Carrying amount of land and land improvements 2,142      
Carrying amount of building and improvements 12,827      
Accumulated depreciation 2,528      
Seniors Housing Operating | Adrian, 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 1,171      
Initial cost of building and improvements 4,785      
Cost Capitalized Subsequent to Acquisition 344      
Carrying amount of land and land improvements 1,171      
Carrying amount of building and improvements 5,129      
Accumulated depreciation 675      
Seniors Housing Operating | Aiken, 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 2,256      
Initial cost of building and improvements 21,496      
Cost Capitalized Subsequent to Acquisition 1,273      
Carrying amount of land and land improvements 2,256      
Carrying amount of building and improvements 22,769      
Accumulated depreciation 166      
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 2,787      
Carrying amount of land and land improvements 176      
Carrying amount of building and improvements 8,984      
Accumulated depreciation 3,296      
Seniors Housing Operating | Alexandria, VA 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 8,280      
Initial cost of building and improvements 50,914      
Cost Capitalized Subsequent to Acquisition 606      
Carrying amount of land and land improvements 8,280      
Carrying amount of building and improvements 51,520      
Accumulated depreciation 7,986      
Seniors Housing Operating | Alexandria, VA 2        
SEC Schedule, 12-28, 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 60,687      
Carrying amount of land and land improvements 8,700      
Carrying amount of building and improvements 51,987      
Accumulated depreciation 1,829      
Seniors Housing Operating | Alexandria, VA 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 12,168      
Initial cost of building and improvements 21,210      
Cost Capitalized Subsequent to Acquisition 4,556      
Carrying amount of land and land improvements 12,225      
Carrying amount of building and improvements 25,709      
Accumulated depreciation 9,374      
Seniors Housing Operating | Allegan, 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 858      
Initial cost of building and improvements 6,252      
Cost Capitalized Subsequent to Acquisition 98      
Carrying amount of land and land improvements 858      
Carrying amount of building and improvements 6,350      
Accumulated depreciation 442      
Seniors Housing Operating | Altrincham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,244      
Initial cost of building and improvements 25,187      
Cost Capitalized Subsequent to Acquisition 2,419      
Carrying amount of land and land improvements 4,374      
Carrying amount of building and improvements 27,476      
Accumulated depreciation 9,425      
Seniors Housing Operating | Amarillo, 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 11,591      
Cost Capitalized Subsequent to Acquisition 667      
Carrying amount of land and land improvements 756      
Carrying amount of building and improvements 12,221      
Accumulated depreciation 2,202      
Seniors Housing Operating | Ames, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 330      
Initial cost of building and improvements 8,870      
Cost Capitalized Subsequent to Acquisition 2,562      
Carrying amount of land and land improvements 330      
Carrying amount of building and improvements 11,432      
Accumulated depreciation 3,297      
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 10,148      
Initial cost of land and land improvements 1,233      
Initial cost of building and improvements 11,429      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,233      
Carrying amount of building and improvements 11,429      
Accumulated depreciation 2,406      
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 707      
Carrying amount of land and land improvements 509      
Carrying amount of building and improvements 5,117      
Accumulated depreciation 1,670      
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 2,715      
Carrying amount of land and land improvements 866      
Carrying amount of building and improvements 8,849      
Accumulated depreciation 5,639      
Seniors Housing Operating | Anjou, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,670      
Initial cost of land and land improvements 14,451      
Initial cost of building and improvements 60,572      
Cost Capitalized Subsequent to Acquisition 13,663      
Carrying amount of land and land improvements 14,831      
Carrying amount of building and improvements 73,855      
Accumulated depreciation 8,543      
Seniors Housing Operating | Ankeny, IA 1        
SEC Schedule, 12-28, Real 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 432      
Carrying amount of land and land improvements 1,164      
Carrying amount of building and improvements 10,667      
Accumulated depreciation 2,482      
Seniors Housing Operating | Ankeny, IA 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,518      
Initial cost of building and improvements 13,350      
Cost Capitalized Subsequent to Acquisition 1,364      
Carrying amount of land and land improvements 2,535      
Carrying amount of building and improvements 14,697      
Accumulated depreciation 1,693      
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 7,021      
Carrying amount of land and land improvements 486      
Carrying amount of building and improvements 23,654      
Accumulated depreciation 8,178      
Seniors Housing Operating | Arlington, TX 1        
SEC Schedule, 12-28, Real 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 7,742      
Carrying amount of land and land improvements 1,660      
Carrying amount of building and improvements 45,137      
Accumulated depreciation 16,944      
Seniors Housing Operating | Arlington, TX 2        
SEC Schedule, 12-28, 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 13,003      
Cost Capitalized Subsequent to Acquisition 1,041      
Carrying amount of land and land improvements 1,021      
Carrying amount of building and improvements 13,917      
Accumulated depreciation 1,782      
Seniors Housing Operating | Arlington, VA 1        
SEC Schedule, 12-28, 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 18,179      
Carrying amount of land and land improvements 8,393      
Carrying amount of building and improvements 49,369      
Accumulated depreciation 21,998      
Seniors Housing Operating | Arlington, VA 2        
SEC Schedule, 12-28, 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 8,631      
Carrying amount of land and land improvements 77      
Carrying amount of building and improvements 8,554      
Accumulated depreciation 2,123      
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 952      
Carrying amount of land and land improvements 834      
Carrying amount of building and improvements 7,189      
Accumulated depreciation 2,553      
Seniors Housing Operating | Atlanta, GA 1        
SEC Schedule, 12-28, 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 6,408      
Carrying amount of land and land improvements 2,080      
Carrying amount of building and improvements 21,300      
Accumulated depreciation 14,700      
Seniors Housing Operating | Atlanta, GA 2        
SEC Schedule, 12-28, 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 2,993      
Carrying amount of land and land improvements 2,206      
Carrying amount of building and improvements 23,490      
Accumulated depreciation 7,616      
Seniors Housing Operating | Auburn, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,591      
Initial cost of land and land improvements 1,176      
Initial cost of building and improvements 14,371      
Cost Capitalized Subsequent to Acquisition 810      
Carrying amount of land and land improvements 1,183      
Carrying amount of building and improvements 15,174      
Accumulated depreciation 1,398      
Seniors Housing Operating | Augusta, 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 1,590      
Initial cost of building and improvements 15,228      
Cost Capitalized Subsequent to Acquisition 1,067      
Carrying amount of land and land improvements 1,590      
Carrying amount of building and improvements 16,295      
Accumulated depreciation 127      
Seniors Housing Operating | Austin, TX 1        
SEC Schedule, 12-28, 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 5,334      
Carrying amount of land and land improvements 885      
Carrying amount of building and improvements 14,849      
Accumulated depreciation 8,277      
Seniors Housing Operating | Austin, TX 2        
SEC Schedule, 12-28, Real 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 1,445      
Carrying amount of land and land improvements 1,574      
Carrying amount of building and improvements 22,844      
Accumulated depreciation 6,351      
Seniors Housing Operating | Austin, TX 3        
SEC Schedule, 12-28, 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 3,393      
Carrying amount of land and land improvements 4,200      
Carrying amount of building and improvements 78,243      
Accumulated depreciation 19,258      
Seniors Housing Operating | Austin, TX 4        
SEC Schedule, 12-28, 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 20,631      
Cost Capitalized Subsequent to Acquisition 1,530      
Carrying amount of land and land improvements 4,877      
Carrying amount of building and improvements 22,116      
Accumulated depreciation 4,159      
Seniors Housing Operating | Avon, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,830      
Initial cost of building and improvements 14,470      
Cost Capitalized Subsequent to Acquisition 4,369      
Carrying amount of land and land improvements 1,830      
Carrying amount of building and improvements 18,839      
Accumulated depreciation 5,669      
Seniors Housing Operating | Bagshot, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,960      
Initial cost of building and improvements 29,881      
Cost Capitalized Subsequent to Acquisition 6,548      
Carrying amount of land and land improvements 5,123      
Carrying amount of building and improvements 36,266      
Accumulated depreciation 14,575      
Seniors Housing Operating | Baie - Comeau, 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 2,863      
Initial cost of building and improvements 25,343      
Cost Capitalized Subsequent to Acquisition 6,991      
Carrying amount of land and land improvements 2,863      
Carrying amount of building and improvements 32,334      
Accumulated depreciation 2,279      
Seniors Housing Operating | Bakersfield, CA 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 22,491      
Carrying amount of land and land improvements 2,822      
Carrying amount of building and improvements 19,669      
Accumulated depreciation 2,432      
Seniors Housing Operating | Bakersfield, CA 2        
SEC Schedule, 12-28, Real 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 15,126      
Cost Capitalized Subsequent to Acquisition 945      
Carrying amount of land and land improvements 1,146      
Carrying amount of building and improvements 16,052      
Accumulated depreciation 2,267      
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 324      
Carrying amount of land and land improvements 5,565      
Carrying amount of building and improvements 18,200      
Accumulated depreciation 1,969      
Seniors Housing Operating | Barnet, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 19,777      
Initial cost of building and improvements 39,598      
Cost Capitalized Subsequent to Acquisition 4,660      
Carrying amount of land and land improvements 20,867      
Carrying amount of building and improvements 43,168      
Accumulated depreciation 2,298      
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 12,001      
Cost Capitalized Subsequent to Acquisition 239      
Carrying amount of land and land improvements 2,377      
Carrying amount of building and improvements 12,202      
Accumulated depreciation 2,408      
Seniors Housing Operating | Basingstoke, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,420      
Initial cost of building and improvements 18,853      
Cost Capitalized Subsequent to Acquisition 1,583      
Carrying amount of land and land improvements 3,532      
Carrying amount of building and improvements 20,324      
Accumulated depreciation 5,612      
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 3,309      
Carrying amount of land and land improvements 2,410      
Carrying amount of building and improvements 40,965      
Accumulated depreciation 13,362      
Seniors Housing Operating | Bassett, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,874      
Initial cost of building and improvements 32,304      
Cost Capitalized Subsequent to Acquisition 9,488      
Carrying amount of land and land improvements 5,034      
Carrying amount of building and improvements 41,632      
Accumulated depreciation 18,015      
Seniors Housing Operating | Bath, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,696      
Initial cost of building and improvements 11,876      
Cost Capitalized Subsequent to Acquisition 425      
Carrying amount of land and land improvements 2,689      
Carrying amount of building and improvements 12,308      
Accumulated depreciation 2,429      
Seniors Housing Operating | Baton Rouge, LA 1        
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 2,247      
Carrying amount of land and land improvements 939      
Carrying amount of building and improvements 31,534      
Accumulated depreciation 10,418      
Seniors Housing Operating | Baton Rouge, LA 2        
SEC Schedule, 12-28, Real 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 6,717      
Cost Capitalized Subsequent to Acquisition 554      
Carrying amount of land and land improvements 1,693      
Carrying amount of building and improvements 7,183      
Accumulated depreciation 1,042      
Seniors Housing Operating | Baton Rouge, LA 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,241      
Initial cost of building and improvements 23,330      
Cost Capitalized Subsequent to Acquisition 2,420      
Carrying amount of land and land improvements 3,241      
Carrying amount of building and improvements 25,750      
Accumulated depreciation 188      
Seniors Housing Operating | Bay City, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,225      
Initial cost of building and improvements 6,424      
Cost Capitalized Subsequent to Acquisition 564      
Carrying amount of land and land improvements 1,243      
Carrying amount of building and improvements 6,970      
Accumulated depreciation 950      
Seniors Housing Operating | Beaconsfield, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,566      
Initial cost of building and improvements 50,952      
Cost Capitalized Subsequent to Acquisition 3,356      
Carrying amount of land and land improvements 5,749      
Carrying amount of building and improvements 54,125      
Accumulated depreciation 17,713      
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 902      
Carrying amount of land and land improvements 1,265      
Carrying amount of building and improvements 18,270      
Accumulated depreciation 6,564      
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 0      
Initial cost of land and land improvements 1,189      
Initial cost of building and improvements 13,240      
Cost Capitalized Subsequent to Acquisition 197      
Carrying amount of land and land improvements 1,197      
Carrying amount of building and improvements 13,429      
Accumulated depreciation 653      
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 6,184      
Initial cost of land and land improvements 1,007      
Initial cost of building and improvements 11,274      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,007      
Carrying amount of building and improvements 11,274      
Accumulated depreciation 1,599      
Seniors Housing Operating | Beckenham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,156      
Initial cost of building and improvements 27,194      
Cost Capitalized Subsequent to Acquisition 27,955      
Carrying amount of land and land improvements 20,665      
Carrying amount of building and improvements 35,640      
Accumulated depreciation 2,578      
Seniors Housing Operating | Bedford, NH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 18,357      
Initial cost of land and land improvements 3,565      
Initial cost of building and improvements 29,929      
Cost Capitalized Subsequent to Acquisition 1,756      
Carrying amount of land and land improvements 3,565      
Carrying amount of building and improvements 31,685      
Accumulated depreciation 2,852      
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 1,047      
Carrying amount of land and land improvements 1,838      
Carrying amount of building and improvements 22,113      
Accumulated depreciation 5,191      
Seniors Housing Operating | Bellevue, WA 1        
SEC Schedule, 12-28, 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 4,015      
Carrying amount of land and land improvements 2,816      
Carrying amount of building and improvements 23,003      
Accumulated depreciation 8,727      
Seniors Housing Operating | Bellevue, WA 2        
SEC Schedule, 12-28, 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 42,227      
Carrying amount of land and land improvements 6,345      
Carrying amount of building and improvements 35,882      
Accumulated depreciation 1,211      
Seniors Housing Operating | Bellevue, WA 3        
SEC Schedule, 12-28, 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 9,632      
Cost Capitalized Subsequent to Acquisition 3,116      
Carrying amount of land and land improvements 6,396      
Carrying amount of building and improvements 12,659      
Accumulated depreciation 1,569      
Seniors Housing Operating | Bellevue, WA 4        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 20,170      
Initial cost of building and improvements 44,232      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 20,170      
Carrying amount of building and improvements 44,232      
Accumulated depreciation 10,498      
Seniors Housing Operating | Bellingham, WA 1        
SEC Schedule, 12-28, Real 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 4,864      
Carrying amount of land and land improvements 1,507      
Carrying amount of building and improvements 24,718      
Accumulated depreciation 9,066      
Seniors Housing Operating | Bellingham, WA 2        
SEC Schedule, 12-28, Real 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 1,766      
Carrying amount of land and land improvements 1,290      
Carrying amount of building and improvements 18,058      
Accumulated depreciation 3,060      
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 2,898      
Carrying amount of land and land improvements 188      
Carrying amount of building and improvements 38,010      
Accumulated depreciation 13,325      
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 0      
Initial cost of land and land improvements 1,658      
Initial cost of building and improvements 12,791      
Cost Capitalized Subsequent to Acquisition 103      
Carrying amount of land and land improvements 1,658      
Carrying amount of building and improvements 12,894      
Accumulated depreciation 840      
Seniors Housing Operating | Bethel Park, PA 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,721      
Initial cost of land and land improvements 1,666      
Initial cost of building and improvements 12,977      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,666      
Carrying amount of building and improvements 12,977      
Accumulated depreciation 2,334      
Seniors Housing Operating | Bethel Park, PA 2        
SEC Schedule, 12-28, 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 12,787      
Cost Capitalized Subsequent to Acquisition 2,307      
Carrying amount of land and land improvements 3,477      
Carrying amount of building and improvements 15,093      
Accumulated depreciation 2,204      
Seniors Housing Operating | Bethesda, MD 1        
SEC Schedule, 12-28, 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 2,889      
Carrying amount of land and land improvements 3      
Carrying amount of building and improvements 48,195      
Accumulated depreciation 15,617      
Seniors Housing Operating | Bethesda, MD 2        
SEC Schedule, 12-28, 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 69,988      
Carrying amount of land and land improvements 3,520      
Carrying amount of building and improvements 66,468      
Accumulated depreciation 8,427      
Seniors Housing Operating | Bethesda, MD 3        
SEC Schedule, 12-28, 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 1,860      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,860      
Accumulated depreciation 753      
Seniors Housing Operating | Bethesda, MD 4        
SEC Schedule, 12-28, 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 1,319      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,319      
Accumulated depreciation 970      
Seniors Housing Operating | Beverly, 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 5,879      
Initial cost of building and improvements 10,378      
Cost Capitalized Subsequent to Acquisition 20,000      
Carrying amount of land and land improvements 5,879      
Carrying amount of building and improvements 30,378      
Accumulated depreciation 839      
Seniors Housing Operating | Birmingham, 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 3,110      
Initial cost of building and improvements 21,512      
Cost Capitalized Subsequent to Acquisition 2,526      
Carrying amount of land and land improvements 3,110      
Carrying amount of building and improvements 24,038      
Accumulated depreciation 258      
Seniors Housing Operating | Birmingham, UK 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 15,488      
Carrying amount of land and land improvements 1,529      
Carrying amount of building and improvements 13,959      
Accumulated depreciation 2,838      
Seniors Housing Operating | Birmingham, UK 2        
SEC Schedule, 12-28, 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 19,341      
Carrying amount of land and land improvements 69      
Carrying amount of building and improvements 19,272      
Accumulated depreciation 4,839      
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 1,893      
Carrying amount of land and land improvements 2,275      
Carrying amount of building and improvements 10,597      
Accumulated depreciation 3,799      
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 1,931      
Carrying amount of land and land improvements 2,204      
Carrying amount of building and improvements 37,389      
Accumulated depreciation 12,307      
Seniors Housing Operating | Blue Springs, 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 3,995      
Initial cost of building and improvements 31,501      
Cost Capitalized Subsequent to Acquisition 2,532      
Carrying amount of land and land improvements 3,995      
Carrying amount of building and improvements 34,033      
Accumulated depreciation 506      
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 42,310      
Carrying amount of land and land improvements 7,033      
Carrying amount of building and improvements 153,089      
Accumulated depreciation 41,632      
Seniors Housing Operating | Boise, ID 1        
SEC Schedule, 12-28, Real 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 6,528      
Carrying amount of land and land improvements 2,224      
Carrying amount of building and improvements 21,762      
Accumulated depreciation 5,180      
Seniors Housing Operating | Boise, ID 2        
SEC Schedule, 12-28, Real 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 10,468      
Cost Capitalized Subsequent to Acquisition 224      
Carrying amount of land and land improvements 1,626      
Carrying amount of building and improvements 10,691      
Accumulated depreciation 1,765      
Seniors Housing Operating | Bolingbrook, 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 3,568      
Initial cost of building and improvements 25,211      
Cost Capitalized Subsequent to Acquisition 3,899      
Carrying amount of land and land improvements 3,568      
Carrying amount of building and improvements 29,110      
Accumulated depreciation 317      
Seniors Housing Operating | Bossier City, 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 2,009      
Initial cost of building and improvements 31,198      
Cost Capitalized Subsequent to Acquisition 132      
Carrying amount of land and land improvements 2,009      
Carrying amount of building and improvements 31,330      
Accumulated depreciation 2,132      
Seniors Housing Operating | Boston, 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 3,456      
Initial cost of building and improvements 19,227      
Cost Capitalized Subsequent to Acquisition 1,712      
Carrying amount of land and land improvements 3,456      
Carrying amount of building and improvements 20,939      
Accumulated depreciation 323      
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 7,716      
Carrying amount of land and land improvements 1,350      
Carrying amount of building and improvements 21,155      
Accumulated depreciation 7,745      
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 3,373      
Carrying amount of land and land improvements 3,207      
Carrying amount of building and improvements 30,618      
Accumulated depreciation 11,884      
Seniors Housing Operating | Boynton Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 35,819      
Carrying amount of land and land improvements 3,772      
Carrying amount of building and improvements 32,047      
Accumulated depreciation 788      
Seniors Housing Operating | Bradenton, FL 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 480      
Initial cost of building and improvements 9,953      
Cost Capitalized Subsequent to Acquisition 348      
Carrying amount of land and land improvements 480      
Carrying amount of building and improvements 10,301      
Accumulated depreciation 3,103      
Seniors Housing Operating | Bradenton, FL 2        
SEC Schedule, 12-28, 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 11,202      
Cost Capitalized Subsequent to Acquisition 1,518      
Carrying amount of land and land improvements 4,692      
Carrying amount of building and improvements 12,692      
Accumulated depreciation 2,305      
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 2,177      
Carrying amount of land and land improvements 247      
Carrying amount of building and improvements 43,220      
Accumulated depreciation 14,457      
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 0      
Initial cost of land and land improvements 10,196      
Initial cost of building and improvements 59,989      
Cost Capitalized Subsequent to Acquisition 3,899      
Carrying amount of land and land improvements 10,538      
Carrying amount of building and improvements 63,546      
Accumulated depreciation 18,169      
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 3,906      
Carrying amount of land and land improvements 1,220      
Carrying amount of building and improvements 14,147      
Accumulated depreciation 4,742      
Seniors Housing Operating | Brea, 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 6,302      
Initial cost of building and improvements 80,468      
Cost Capitalized Subsequent to Acquisition 2,478      
Carrying amount of land and land improvements 6,302      
Carrying amount of building and improvements 82,946      
Accumulated depreciation 5,339      
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 3,175      
Carrying amount of land and land improvements 2,417      
Carrying amount of building and improvements 25,802      
Accumulated depreciation 4,221      
Seniors Housing Operating | Brentwood, 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 4,602      
Initial cost of building and improvements 32,594      
Cost Capitalized Subsequent to Acquisition 4,050      
Carrying amount of land and land improvements 4,602      
Carrying amount of building and improvements 36,644      
Accumulated depreciation 4,555      
Seniors Housing Operating | Brentwood, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 8,537      
Initial cost of building and improvements 45,869      
Cost Capitalized Subsequent to Acquisition 3,434      
Carrying amount of land and land improvements 8,818      
Carrying amount of building and improvements 49,022      
Accumulated depreciation 9,817      
Seniors Housing Operating | Brick, NJ 1        
SEC Schedule, 12-28, Real 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 2,650      
Carrying amount of land and land improvements 1,324      
Carrying amount of building and improvements 19,868      
Accumulated depreciation 7,277      
Seniors Housing Operating | Brick, NJ 2        
SEC Schedule, 12-28, 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 6,791      
Carrying amount of land and land improvements 817      
Carrying amount of building and improvements 23,789      
Accumulated depreciation 7,399      
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 4,124      
Carrying amount of land and land improvements 1,881      
Carrying amount of building and improvements 52,174      
Accumulated depreciation 17,672      
Seniors Housing Operating | Broadview Heights, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,886      
Initial cost of land and land improvements 1,567      
Initial cost of building and improvements 20,541      
Cost Capitalized Subsequent to Acquisition 2,373      
Carrying amount of land and land improvements 1,575      
Carrying amount of building and improvements 22,906      
Accumulated depreciation 2,383      
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 4,207      
Carrying amount of land and land improvements 1,642      
Carrying amount of building and improvements 27,561      
Accumulated depreciation 8,687      
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 3,697      
Initial cost of land and land improvements 484      
Initial cost of building and improvements 7,445      
Cost Capitalized Subsequent to Acquisition 1,104      
Carrying amount of land and land improvements 515      
Carrying amount of building and improvements 8,518      
Accumulated depreciation 2,431      
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 1,024      
Carrying amount of land and land improvements 1,300      
Carrying amount of building and improvements 13,854      
Accumulated depreciation 3,770      
Seniors Housing Operating | Brookline, 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 0      
Cost Capitalized Subsequent to Acquisition 3,799      
Carrying amount of land and land improvements 3,799      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | Broomfield, CO 1        
SEC Schedule, 12-28, 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 16,850      
Carrying amount of land and land improvements 10,206      
Carrying amount of building and improvements 55,331      
Accumulated depreciation 27,647      
Seniors Housing Operating | Broomfield, CO 2        
SEC Schedule, 12-28, 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 29,146      
Carrying amount of land and land improvements 2,566      
Carrying amount of building and improvements 26,580      
Accumulated depreciation 2,999      
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 8,184      
Initial cost of land and land improvements 5,499      
Initial cost of building and improvements 31,854      
Cost Capitalized Subsequent to Acquisition 3,271      
Carrying amount of land and land improvements 5,650      
Carrying amount of building and improvements 34,974      
Accumulated depreciation 11,998      
Seniors Housing Operating | Brunswick, 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 1,460      
Initial cost of building and improvements 17,974      
Cost Capitalized Subsequent to Acquisition 1,087      
Carrying amount of land and land improvements 1,460      
Carrying amount of building and improvements 19,061      
Accumulated depreciation 1,935      
Seniors Housing Operating | Buckingham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 18,505      
Carrying amount of land and land improvements 3,077      
Carrying amount of building and improvements 15,428      
Accumulated depreciation 4,226      
Seniors Housing Operating | Buffalo, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 6,872      
Initial cost of land and land improvements 1,117      
Initial cost of building and improvements 11,022      
Cost Capitalized Subsequent to Acquisition 654      
Carrying amount of land and land improvements 1,117      
Carrying amount of building and improvements 11,676      
Accumulated depreciation 1,129      
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 5,389      
Carrying amount of land and land improvements 2,850      
Carrying amount of building and improvements 54,518      
Accumulated depreciation 18,769      
Seniors Housing Operating | Burbank, CA 1        
SEC Schedule, 12-28, 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 7,011      
Carrying amount of land and land improvements 4,940      
Carrying amount of building and improvements 50,477      
Accumulated depreciation 17,860      
Seniors Housing Operating | Burbank, CA 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 17,204      
Initial cost of land and land improvements 3,610      
Initial cost of building and improvements 50,817      
Cost Capitalized Subsequent to Acquisition 5,157      
Carrying amount of land and land improvements 3,610      
Carrying amount of building and improvements 55,974      
Accumulated depreciation 12,942      
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 52,892      
Carrying amount of land and land improvements 2,616      
Carrying amount of building and improvements 50,276      
Accumulated depreciation 6,475      
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 833      
Carrying amount of land and land improvements 3,150      
Carrying amount of building and improvements 11,270      
Accumulated depreciation 2,968      
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 431      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 63,217      
Accumulated depreciation 13,543      
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 2,664      
Carrying amount of land and land improvements 2,578      
Carrying amount of building and improvements 36,883      
Accumulated depreciation 12,538      
Seniors Housing Operating | Burlington, WA 1        
SEC Schedule, 12-28, 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 16,098      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 877      
Carrying amount of building and improvements 16,098      
Accumulated depreciation 3,433      
Seniors Housing Operating | Burlington, WA 2        
SEC Schedule, 12-28, 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 9,186      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 768      
Carrying amount of building and improvements 9,186      
Accumulated depreciation 2,019      
Seniors Housing Operating | Bushey, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 12,690      
Initial cost of building and improvements 36,482      
Cost Capitalized Subsequent to Acquisition 513      
Carrying amount of land and land improvements 12,679      
Carrying amount of building and improvements 37,006      
Accumulated depreciation 6,069      
Seniors Housing Operating | Buzzards Bay, 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 3,424      
Initial cost of building and improvements 28,854      
Cost Capitalized Subsequent to Acquisition 100      
Carrying amount of land and land improvements 3,424      
Carrying amount of building and improvements 28,954      
Accumulated depreciation 656      
Seniors Housing Operating | Calgary, AB 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,796      
Initial cost of land and land improvements 2,793      
Initial cost of building and improvements 41,179      
Cost Capitalized Subsequent to Acquisition 3,787      
Carrying amount of land and land improvements 2,950      
Carrying amount of building and improvements 44,809      
Accumulated depreciation 14,851      
Seniors Housing Operating | Calgary, AB 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 17,958      
Initial cost of land and land improvements 3,431      
Initial cost of building and improvements 28,983      
Cost Capitalized Subsequent to Acquisition 3,815      
Carrying amount of land and land improvements 3,613      
Carrying amount of building and improvements 32,616      
Accumulated depreciation 10,204      
Seniors Housing Operating | Calgary, AB 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 22,797      
Initial cost of land and land improvements 2,385      
Initial cost of building and improvements 36,776      
Cost Capitalized Subsequent to Acquisition 4,264      
Carrying amount of land and land improvements 2,509      
Carrying amount of building and improvements 40,916      
Accumulated depreciation 9,867      
Seniors Housing Operating | Camberley, UK 1        
SEC Schedule, 12-28, 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 517      
Carrying amount of land and land improvements 9,965      
Carrying amount of building and improvements 39,694      
Accumulated depreciation 7,227      
Seniors Housing Operating | Camberley, UK 2        
SEC Schedule, 12-28, 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 14,974      
Carrying amount of land and land improvements 4,859      
Carrying amount of building and improvements 18,505      
Accumulated depreciation 3,800      
Seniors Housing Operating | Camberley, UK 3        
SEC Schedule, 12-28, 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 3,465      
Carrying amount of land and land improvements 688      
Carrying amount of building and improvements 2,777      
Accumulated depreciation 531      
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 13,404      
Initial cost of land and land improvements 1,249      
Initial cost of building and improvements 7,360      
Cost Capitalized Subsequent to Acquisition 5,469      
Carrying amount of land and land improvements 2,121      
Carrying amount of building and improvements 11,957      
Accumulated depreciation 2,620      
Seniors Housing Operating | Canton, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 709      
Initial cost of building and improvements 8,608      
Cost Capitalized Subsequent to Acquisition 817      
Carrying amount of land and land improvements 709      
Carrying amount of building and improvements 9,425      
Accumulated depreciation 717      
Seniors Housing Operating | Canton, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 968      
Initial cost of building and improvements 8,523      
Cost Capitalized Subsequent to Acquisition 355      
Carrying amount of land and land improvements 971      
Carrying amount of building and improvements 8,875      
Accumulated depreciation 841      
Seniors Housing Operating | Cape Coral, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 760      
Initial cost of building and improvements 18,868      
Cost Capitalized Subsequent to Acquisition 902      
Carrying amount of land and land improvements 760      
Carrying amount of building and improvements 19,770      
Accumulated depreciation 5,966      
Seniors Housing Operating | Cardiff, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,191      
Initial cost of building and improvements 12,566      
Cost Capitalized Subsequent to Acquisition 6,641      
Carrying amount of land and land improvements 3,288      
Carrying amount of building and improvements 19,110      
Accumulated depreciation 6,483      
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 0      
Initial cost of land and land improvements 5,880      
Initial cost of building and improvements 64,711      
Cost Capitalized Subsequent to Acquisition 7,307      
Carrying amount of land and land improvements 5,880      
Carrying amount of building and improvements 72,018      
Accumulated depreciation 27,273      
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 53,419      
Cost Capitalized Subsequent to Acquisition 824      
Carrying amount of land and land improvements 2,787      
Carrying amount of building and improvements 54,222      
Accumulated depreciation 6,402      
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 22,752      
Initial cost of land and land improvements 739      
Initial cost of building and improvements 7,698      
Cost Capitalized Subsequent to Acquisition 37,418      
Carrying amount of land and land improvements 2,440      
Carrying amount of building and improvements 43,415      
Accumulated depreciation 6,922      
Seniors Housing Operating | Caro, 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 614      
Initial cost of building and improvements 4,366      
Cost Capitalized Subsequent to Acquisition 396      
Carrying amount of land and land improvements 614      
Carrying amount of building and improvements 4,762      
Accumulated depreciation 602      
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 8,692      
Carrying amount of land and land improvements 1,730      
Carrying amount of building and improvements 63,740      
Accumulated depreciation 21,283      
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 1,937      
Carrying amount of land and land improvements 4,280      
Carrying amount of building and improvements 33,381      
Accumulated depreciation 8,958      
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 9,159      
Cost Capitalized Subsequent to Acquisition 1,278      
Carrying amount of land and land improvements 2,537      
Carrying amount of building and improvements 10,437      
Accumulated depreciation 2,215      
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 23,542      
Cost Capitalized Subsequent to Acquisition 568      
Carrying amount of land and land improvements 1,602      
Carrying amount of building and improvements 24,109      
Accumulated depreciation 3,055      
Seniors Housing Operating | Cary, NC 1        
SEC Schedule, 12-28, 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 1,432      
Carrying amount of land and land improvements 742      
Carrying amount of building and improvements 46,670      
Accumulated depreciation 14,390      
Seniors Housing Operating | Cary, NC 2        
SEC Schedule, 12-28, 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 12,233      
Carrying amount of land and land improvements 6,242      
Carrying amount of building and improvements 82,111      
Accumulated depreciation 20,549      
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 9,930      
Cost Capitalized Subsequent to Acquisition 282      
Carrying amount of land and land improvements 1,293      
Carrying amount of building and improvements 10,178      
Accumulated depreciation 1,742      
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 40      
Carrying amount of land and land improvements 1,971      
Carrying amount of building and improvements 24,630      
Accumulated depreciation 2,327      
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 1,520      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 17,184      
Accumulated depreciation 3,824      
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 8,254      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 35,748      
Accumulated depreciation 12,283      
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 810      
Cost Capitalized Subsequent to Acquisition 51      
Carrying amount of land and land improvements 552      
Carrying amount of building and improvements 861      
Accumulated depreciation 357      
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 19,817      
Cost Capitalized Subsequent to Acquisition 1,052      
Carrying amount of land and land improvements 2,913      
Carrying amount of building and improvements 20,868      
Accumulated depreciation 2,467      
Seniors Housing Operating | Charlotte, NC 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,799      
Initial cost of building and improvements 42,734      
Cost Capitalized Subsequent to Acquisition 3,666      
Carrying amount of land and land improvements 4,799      
Carrying amount of building and improvements 46,400      
Accumulated depreciation 762      
Seniors Housing Operating | Charlotte, NC 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,881      
Initial cost of building and improvements 44,553      
Cost Capitalized Subsequent to Acquisition 4,677      
Carrying amount of land and land improvements 4,881      
Carrying amount of building and improvements 49,230      
Accumulated depreciation 688      
Seniors Housing Operating | Charlotte, NC 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 45,641      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 70,854      
Carrying amount of land and land improvements 2,500      
Carrying amount of building and improvements 68,354      
Accumulated depreciation 609      
Seniors Housing Operating | Charlotte, NC 4        
SEC Schedule, 12-28, 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 19,325      
Cost Capitalized Subsequent to Acquisition 571      
Carrying amount of land and land improvements 5,306      
Carrying amount of building and improvements 19,869      
Accumulated depreciation 3,382      
Seniors Housing Operating | Charlottesville, VA 1        
SEC Schedule, 12-28, 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 17,844      
Carrying amount of land and land improvements 5,236      
Carrying amount of building and improvements 108,727      
Accumulated depreciation 18,088      
Seniors Housing Operating | Charlottesville, VA 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,542      
Initial cost of building and improvements 40,746      
Cost Capitalized Subsequent to Acquisition 100      
Carrying amount of land and land improvements 2,542      
Carrying amount of building and improvements 40,846      
Accumulated depreciation 2,573      
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 0      
Initial cost of land and land improvements 1,098      
Initial cost of building and improvements 12,462      
Cost Capitalized Subsequent to Acquisition 3,622      
Carrying amount of land and land improvements 1,229      
Carrying amount of building and improvements 15,953      
Accumulated depreciation 4,226      
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 15,791      
Cost Capitalized Subsequent to Acquisition 553      
Carrying amount of land and land improvements 3,374      
Carrying amount of building and improvements 16,343      
Accumulated depreciation 2,996      
Seniors Housing Operating | Chelmsford, MA 1        
SEC Schedule, 12-28, Real 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 6,854      
Carrying amount of land and land improvements 1,131      
Carrying amount of building and improvements 17,714      
Accumulated depreciation 7,284      
Seniors Housing Operating | Chelmsford, MA 2        
SEC Schedule, 12-28, 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 33,143      
Cost Capitalized Subsequent to Acquisition 2,683      
Carrying amount of land and land improvements 2,421      
Carrying amount of building and improvements 35,769      
Accumulated depreciation 4,217      
Seniors Housing Operating | Chertsey, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 9,566      
Initial cost of building and improvements 25,886      
Cost Capitalized Subsequent to Acquisition 2,155      
Carrying amount of land and land improvements 9,557      
Carrying amount of building and improvements 28,050      
Accumulated depreciation 5,317      
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 22,566      
Cost Capitalized Subsequent to Acquisition 2,583      
Carrying amount of land and land improvements 2,237      
Carrying amount of building and improvements 25,126      
Accumulated depreciation 3,749      
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 2,323      
Carrying amount of land and land improvements 1,917      
Carrying amount of building and improvements 50,629      
Accumulated depreciation 16,111      
Seniors Housing Operating | Chesterfield, 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 3,817      
Initial cost of building and improvements 31,544      
Cost Capitalized Subsequent to Acquisition 3,148      
Carrying amount of land and land improvements 3,817      
Carrying amount of building and improvements 34,692      
Accumulated depreciation 333      
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 1,423      
Carrying amount of land and land improvements 2,980      
Carrying amount of building and improvements 39,037      
Accumulated depreciation 5,165      
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 14,754      
Cost Capitalized Subsequent to Acquisition 377      
Carrying amount of land and land improvements 1,931      
Carrying amount of building and improvements 14,980      
Accumulated depreciation 2,683      
Seniors Housing Operating | Chorleywood, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,636      
Initial cost of building and improvements 43,191      
Cost Capitalized Subsequent to Acquisition 5,502      
Carrying amount of land and land improvements 5,803      
Carrying amount of building and improvements 48,526      
Accumulated depreciation 18,518      
Seniors Housing Operating | Chula Vista, CA 1        
SEC Schedule, 12-28, 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 31,866      
Cost Capitalized Subsequent to Acquisition 40      
Carrying amount of land and land improvements 4,217      
Carrying amount of building and improvements 31,906      
Accumulated depreciation 5,065      
Seniors Housing Operating | Chula Vista, CA 2        
SEC Schedule, 12-28, 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 25,946      
Carrying amount of land and land improvements 2,216      
Carrying amount of building and improvements 23,730      
Accumulated depreciation 8,153      
Seniors Housing Operating | Church Crookham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,591      
Initial cost of building and improvements 14,215      
Cost Capitalized Subsequent to Acquisition 1,693      
Carrying amount of land and land improvements 2,676      
Carrying amount of building and improvements 15,823      
Accumulated depreciation 4,887      
Seniors Housing Operating | Cincinnati, OH 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 10,322      
Initial cost of land and land improvements 1,790      
Initial cost of building and improvements 11,426      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,790      
Carrying amount of building and improvements 11,426      
Accumulated depreciation 1,848      
Seniors Housing Operating | Cincinnati, OH 2        
SEC Schedule, 12-28, Real 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 3,994      
Cost Capitalized Subsequent to Acquisition 349      
Carrying amount of land and land improvements 1,606      
Carrying amount of building and improvements 4,343      
Accumulated depreciation 1,664      
Seniors Housing Operating | Cincinnati, OH 3        
SEC Schedule, 12-28, 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 52,867      
Cost Capitalized Subsequent to Acquisition 531      
Carrying amount of land and land improvements 3,352      
Carrying amount of building and improvements 53,391      
Accumulated depreciation 9,025      
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 4,122      
Carrying amount of land and land improvements 2,300      
Carrying amount of building and improvements 35,998      
Accumulated depreciation 14,132      
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 3,920      
Cost Capitalized Subsequent to Acquisition 640      
Carrying amount of land and land improvements 1,240      
Carrying amount of building and improvements 4,560      
Accumulated depreciation 942      
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 2,804      
Carrying amount of land and land improvements 2,553      
Carrying amount of building and improvements 12,609      
Accumulated depreciation 4,972      
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 11,981      
Initial cost of land and land improvements 1,421      
Initial cost of building and improvements 11,540      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,421      
Carrying amount of building and improvements 11,540      
Accumulated depreciation 2,459      
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 4,903      
Cost Capitalized Subsequent to Acquisition 457      
Carrying amount of land and land improvements 1,744      
Carrying amount of building and improvements 5,343      
Accumulated depreciation 791      
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 952      
Carrying amount of land and land improvements 520      
Carrying amount of building and improvements 6,321      
Accumulated depreciation 2,560      
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 3,487      
Carrying amount of land and land improvements 2,566      
Carrying amount of building and improvements 29,553      
Accumulated depreciation 10,307      
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 105      
Carrying amount of land and land improvements 1,050      
Carrying amount of building and improvements 17,187      
Accumulated depreciation 3,253      
Seniors Housing Operating | Collierville, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 42,239      
Carrying amount of land and land improvements 2,306      
Carrying amount of building and improvements 39,933      
Accumulated depreciation 2,938      
Seniors Housing Operating | Colorado Springs, CO 1        
SEC Schedule, 12-28, 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 2,493      
Carrying amount of land and land improvements 1,034      
Carrying amount of building and improvements 17,015      
Accumulated depreciation 6,171      
Seniors Housing Operating | Colorado Springs, CO 2        
SEC Schedule, 12-28, Real 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 15,510      
Cost Capitalized Subsequent to Acquisition 1,211      
Carrying amount of land and land improvements 1,167      
Carrying amount of building and improvements 16,696      
Accumulated depreciation 2,583      
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 4,244      
Carrying amount of land and land improvements 1,496      
Carrying amount of building and improvements 18,261      
Accumulated depreciation 6,863      
Seniors Housing Operating | Columbus, IN 1        
SEC Schedule, 12-28, 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 1,090      
Carrying amount of land and land improvements 610      
Carrying amount of building and improvements 4,280      
Accumulated depreciation 1,316      
Seniors Housing Operating | Columbus, IN 2        
SEC Schedule, 12-28, Real 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 12,186      
Cost Capitalized Subsequent to Acquisition 1,514      
Carrying amount of land and land improvements 1,594      
Carrying amount of building and improvements 13,699      
Accumulated depreciation 2,263      
Seniors Housing Operating | Columbus, OH 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 916      
Initial cost of building and improvements 7,112      
Cost Capitalized Subsequent to Acquisition 272      
Carrying amount of land and land improvements 916      
Carrying amount of building and improvements 7,384      
Accumulated depreciation 680      
Seniors Housing Operating | Columbus, OH 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 12,428      
Initial cost of land and land improvements 1,547      
Initial cost of building and improvements 17,126      
Cost Capitalized Subsequent to Acquisition 1,294      
Carrying amount of land and land improvements 1,547      
Carrying amount of building and improvements 18,420      
Accumulated depreciation 1,883      
Seniors Housing Operating | Concord, NH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 13,538      
Initial cost of land and land improvements 2,825      
Initial cost of building and improvements 21,636      
Cost Capitalized Subsequent to Acquisition 1,446      
Carrying amount of land and land improvements 2,825      
Carrying amount of building and improvements 23,082      
Accumulated depreciation 2,314      
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 1,557      
Carrying amount of land and land improvements 980      
Carrying amount of building and improvements 9,328      
Accumulated depreciation 3,240      
Seniors Housing Operating | Coos Bay, OR 1        
SEC Schedule, 12-28, 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 1,161      
Carrying amount of land and land improvements 864      
Carrying amount of building and improvements 9,132      
Accumulated depreciation 1,847      
Seniors Housing Operating | Coos Bay, OR 2        
SEC Schedule, 12-28, Real 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 1,339      
Carrying amount of land and land improvements 1,792      
Carrying amount of building and improvements 11,191      
Accumulated depreciation 2,589      
Seniors Housing Operating | Coppell, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,550      
Initial cost of building and improvements 8,386      
Cost Capitalized Subsequent to Acquisition 866      
Carrying amount of land and land improvements 1,550      
Carrying amount of building and improvements 9,252      
Accumulated depreciation 2,766      
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 6,818      
Initial cost of land and land improvements 3,047      
Initial cost of building and improvements 24,567      
Cost Capitalized Subsequent to Acquisition 3,758      
Carrying amount of land and land improvements 3,236      
Carrying amount of building and improvements 28,136      
Accumulated depreciation 10,087      
Seniors Housing Operating | Crowley, 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 2,955      
Initial cost of building and improvements 9,908      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,955      
Carrying amount of building and improvements 9,908      
Accumulated depreciation 104      
Seniors Housing Operating | Crystal Lake, IL 1        
SEC Schedule, 12-28, 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 2,534      
Carrying amount of land and land improvements 987      
Carrying amount of building and improvements 14,883      
Accumulated depreciation 5,774      
Seniors Housing Operating | Crystal Lake, IL 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,643      
Initial cost of building and improvements 39,687      
Cost Capitalized Subsequent to Acquisition 3,620      
Carrying amount of land and land improvements 7,562      
Carrying amount of building and improvements 43,388      
Accumulated depreciation 8,006      
Seniors Housing Operating | Crystal Lake, IL 3        
SEC Schedule, 12-28, 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 117      
Carrying amount of land and land improvements 117      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | Cuyahoga Falls, OH 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 592      
Initial cost of building and improvements 2,804      
Cost Capitalized Subsequent to Acquisition 622      
Carrying amount of land and land improvements 592      
Carrying amount of building and improvements 3,426      
Accumulated depreciation 772      
Seniors Housing Operating | Cuyahoga Falls, OH 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 6,286      
Initial cost of land and land improvements 1,301      
Initial cost of building and improvements 8,715      
Cost Capitalized Subsequent to Acquisition 47      
Carrying amount of land and land improvements 1,301      
Carrying amount of building and improvements 8,762      
Accumulated depreciation 359      
Seniors Housing Operating | Dallas, TX 1        
SEC Schedule, 12-28, 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 4,683      
Carrying amount of land and land improvements 6,330      
Carrying amount of building and improvements 119,477      
Accumulated depreciation 30,496      
Seniors Housing Operating | Dallas, TX 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,119      
Initial cost of building and improvements 21,689      
Cost Capitalized Subsequent to Acquisition 2,000      
Carrying amount of land and land improvements 4,119      
Carrying amount of building and improvements 23,689      
Accumulated depreciation 380      
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 54,079      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 5,508      
Carrying amount of building and improvements 54,079      
Accumulated depreciation 7,003      
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 28,757      
Cost Capitalized Subsequent to Acquisition 8,648      
Carrying amount of land and land improvements 2,255      
Carrying amount of building and improvements 37,386      
Accumulated depreciation 2,652      
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 11,507      
Cost Capitalized Subsequent to Acquisition 494      
Carrying amount of land and land improvements 1,309      
Carrying amount of building and improvements 12,001      
Accumulated depreciation 1,383      
Seniors Housing Operating | Decatur, GA 1        
SEC Schedule, 12-28, Real 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 15,302      
Cost Capitalized Subsequent to Acquisition 3,088      
Carrying amount of land and land improvements 1,098      
Carrying amount of building and improvements 18,390      
Accumulated depreciation 3,066      
Seniors Housing Operating | Decatur, GA 2        
SEC Schedule, 12-28, 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 31,452      
Carrying amount of land and land improvements 1,951      
Carrying amount of building and improvements 29,501      
Accumulated depreciation 10,523      
Seniors Housing Operating | Delaware, 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 1,919      
Initial cost of building and improvements 26,250      
Cost Capitalized Subsequent to Acquisition 352      
Carrying amount of land and land improvements 1,919      
Carrying amount of building and improvements 26,602      
Accumulated depreciation 1,675      
Seniors Housing Operating | Denton, TX 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,760      
Initial cost of building and improvements 8,305      
Cost Capitalized Subsequent to Acquisition 909      
Carrying amount of land and land improvements 1,760      
Carrying amount of building and improvements 9,214      
Accumulated depreciation 3,214      
Seniors Housing Operating | Denton, TX 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 26,966      
Carrying amount of land and land improvements 5,034      
Carrying amount of building and improvements 21,932      
Accumulated depreciation 401      
Seniors Housing Operating | Denton, TX 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,542      
Initial cost of building and improvements 10,014      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,542      
Carrying amount of building and improvements 10,014      
Accumulated depreciation 401      
Seniors Housing Operating | Denver, CO 1        
SEC Schedule, 12-28, Real 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 16,094      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,450      
Carrying amount of building and improvements 16,094      
Accumulated depreciation 8,544      
Seniors Housing Operating | Denver, CO 2        
SEC Schedule, 12-28, 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 9,835      
Carrying amount of land and land improvements 2,910      
Carrying amount of building and improvements 45,673      
Accumulated depreciation 16,870      
Seniors Housing Operating | Denver, CO 3        
SEC Schedule, 12-28, Real 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 110,734      
Carrying amount of land and land improvements 5,402      
Carrying amount of building and improvements 116,086      
Accumulated depreciation 21,699      
Seniors Housing Operating | Denver, CO 4        
SEC Schedule, 12-28, Real 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 1,463      
Carrying amount of land and land improvements 1,989      
Carrying amount of building and improvements 23,019      
Accumulated depreciation 3,223      
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 9,629      
Cost Capitalized Subsequent to Acquisition 1,095      
Carrying amount of land and land improvements 1,383      
Carrying amount of building and improvements 10,537      
Accumulated depreciation 1,701      
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 3,208      
Carrying amount of land and land improvements 4,133      
Carrying amount of building and improvements 41,897      
Accumulated depreciation 14,291      
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 960      
Carrying amount of land and land improvements 2,110      
Carrying amount of building and improvements 15,238      
Accumulated depreciation 6,084      
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 1,437      
Carrying amount of land and land improvements 1,914      
Carrying amount of building and improvements 12,087      
Accumulated depreciation 5,279      
Seniors Housing Operating | Drummondville, 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 5,765      
Initial cost of building and improvements 54,353      
Cost Capitalized Subsequent to Acquisition 10,569      
Carrying amount of land and land improvements 5,765      
Carrying amount of building and improvements 64,922      
Accumulated depreciation 907      
Seniors Housing Operating | Dublin, OH 1        
SEC Schedule, 12-28, Real 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 561      
Carrying amount of land and land improvements 1,186      
Carrying amount of building and improvements 25,889      
Accumulated depreciation 5,907      
Seniors Housing Operating | Dublin, OH 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,688      
Initial cost of building and improvements 23,035      
Cost Capitalized Subsequent to Acquisition 1,100      
Carrying amount of land and land improvements 3,688      
Carrying amount of building and improvements 24,135      
Accumulated depreciation 2,330      
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 23,350      
Cost Capitalized Subsequent to Acquisition 2,973      
Carrying amount of land and land improvements 3,216      
Carrying amount of building and improvements 26,319      
Accumulated depreciation 3,251      
Seniors Housing Operating | Eagle, 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 4,508      
Initial cost of building and improvements 18,360      
Cost Capitalized Subsequent to Acquisition 570      
Carrying amount of land and land improvements 4,508      
Carrying amount of building and improvements 18,930      
Accumulated depreciation 515      
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 11,602      
Initial cost of land and land improvements 2,070      
Initial cost of building and improvements 11,714      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,070      
Carrying amount of building and improvements 11,714      
Accumulated depreciation 2,649      
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 19,373      
Cost Capitalized Subsequent to Acquisition 904      
Carrying amount of land and land improvements 3,944      
Carrying amount of building and improvements 20,252      
Accumulated depreciation 3,548      
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 2,601      
Carrying amount of land and land improvements 127      
Carrying amount of building and improvements 48,534      
Accumulated depreciation 16,357      
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 3,050      
Carrying amount of land and land improvements 4,986      
Carrying amount of building and improvements 40,338      
Accumulated depreciation 13,501      
Seniors Housing Operating | Eastbourne, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,145      
Initial cost of building and improvements 33,744      
Cost Capitalized Subsequent to Acquisition 3,175      
Carrying amount of land and land improvements 4,269      
Carrying amount of building and improvements 36,795      
Accumulated depreciation 12,824      
Seniors Housing Operating | Edgbaston, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,720      
Initial cost of building and improvements 13,969      
Cost Capitalized Subsequent to Acquisition 1,552      
Carrying amount of land and land improvements 2,810      
Carrying amount of building and improvements 15,431      
Accumulated depreciation 3,141      
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 4,365      
Carrying amount of land and land improvements 4,609      
Carrying amount of building and improvements 29,364      
Accumulated depreciation 9,832      
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 4,588      
Carrying amount of land and land improvements 2,044      
Carrying amount of building and improvements 36,750      
Accumulated depreciation 14,313      
Seniors Housing Operating | Edmond, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 410      
Initial cost of building and improvements 8,388      
Cost Capitalized Subsequent to Acquisition 475      
Carrying amount of land and land improvements 410      
Carrying amount of building and improvements 8,863      
Accumulated depreciation 2,768      
Seniors Housing Operating | Edmonds, WA 1        
SEC Schedule, 12-28, Real 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 10,554      
Carrying amount of land and land improvements 1,650      
Carrying amount of building and improvements 35,003      
Accumulated depreciation 10,543      
Seniors Housing Operating | Edmonds, WA 2        
SEC Schedule, 12-28, 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 2,677      
Carrying amount of land and land improvements 2,891      
Carrying amount of building and improvements 29,090      
Accumulated depreciation 4,353      
Seniors Housing Operating | Edmonton, AB 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 6,194      
Initial cost of land and land improvements 1,589      
Initial cost of building and improvements 29,819      
Cost Capitalized Subsequent to Acquisition 3,742      
Carrying amount of land and land improvements 1,723      
Carrying amount of building and improvements 33,427      
Accumulated depreciation 11,392      
Seniors Housing Operating | Edmonton, AB 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,195      
Initial cost of land and land improvements 2,063      
Initial cost of building and improvements 37,293      
Cost Capitalized Subsequent to Acquisition 5,238      
Carrying amount of land and land improvements 2,181      
Carrying amount of building and improvements 42,413      
Accumulated depreciation 15,570      
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 3,699      
Cost Capitalized Subsequent to Acquisition 534      
Carrying amount of land and land improvements 660      
Carrying amount of building and improvements 4,179      
Accumulated depreciation 760      
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 56,599      
Carrying amount of land and land improvements 5,190      
Carrying amount of building and improvements 51,409      
Accumulated depreciation 6,691      
Seniors Housing Operating | Elkhorn, NE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,645      
Initial cost of land and land improvements 1,846      
Initial cost of building and improvements 21,426      
Cost Capitalized Subsequent to Acquisition 1,265      
Carrying amount of land and land improvements 1,806      
Carrying amount of building and improvements 22,731      
Accumulated depreciation 2,028      
Seniors Housing Operating | Elstree, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 50,971      
Carrying amount of land and land improvements 5,544      
Carrying amount of building and improvements 45,427      
Accumulated depreciation 15,708      
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 8,273      
Carrying amount of land and land improvements 5,040      
Carrying amount of building and improvements 54,528      
Accumulated depreciation 18,968      
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 3,266      
Carrying amount of land and land improvements 882      
Carrying amount of building and improvements 15,594      
Accumulated depreciation 6,087      
Seniors Housing Operating | Epsom, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 20,159      
Initial cost of building and improvements 34,803      
Cost Capitalized Subsequent to Acquisition 3,497      
Carrying amount of land and land improvements 20,822      
Carrying amount of building and improvements 37,637      
Accumulated depreciation 7,753      
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 10,935      
Initial cost of land and land improvements 1,611      
Initial cost of building and improvements 9,254      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,611      
Carrying amount of building and improvements 9,254      
Accumulated depreciation 2,234      
Seniors Housing Operating | Esher, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,783      
Initial cost of building and improvements 48,361      
Cost Capitalized Subsequent to Acquisition 6,959      
Carrying amount of land and land improvements 5,951      
Carrying amount of building and improvements 55,152      
Accumulated depreciation 19,908      
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 20,503      
Cost Capitalized Subsequent to Acquisition 2,036      
Carrying amount of land and land improvements 3,219      
Carrying amount of building and improvements 22,531      
Accumulated depreciation 4,280      
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 11,983      
Cost Capitalized Subsequent to Acquisition 550      
Carrying amount of land and land improvements 1,045      
Carrying amount of building and improvements 12,526      
Accumulated depreciation 2,400      
Seniors Housing Operating | Everett, WA 1        
SEC Schedule, 12-28, 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 1,311      
Carrying amount of land and land improvements 638      
Carrying amount of building and improvements 10,019      
Accumulated depreciation 1,708      
Seniors Housing Operating | Everett, WA 2        
SEC Schedule, 12-28, Real 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 16,647      
Cost Capitalized Subsequent to Acquisition 2,894      
Carrying amount of land and land improvements 1,913      
Carrying amount of building and improvements 19,540      
Accumulated depreciation 3,071      
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 3,744      
Carrying amount of land and land improvements 3,286      
Carrying amount of building and improvements 47,446      
Accumulated depreciation 15,739      
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 3,995      
Cost Capitalized Subsequent to Acquisition 654      
Carrying amount of land and land improvements 561      
Carrying amount of building and improvements 4,649      
Accumulated depreciation 709      
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 11,654      
Carrying amount of land and land improvements 1,460      
Carrying amount of building and improvements 25,694      
Accumulated depreciation 11,457      
Seniors Housing Operating | Fairfield, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 49,430      
Carrying amount of land and land improvements 4,783      
Carrying amount of building and improvements 44,647      
Accumulated depreciation 2,132      
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 12,223      
Initial cost of land and land improvements 1,477      
Initial cost of building and improvements 12,979      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,477      
Carrying amount of building and improvements 12,979      
Accumulated depreciation 2,218      
Seniors Housing Operating | Fareham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,408      
Initial cost of building and improvements 17,970      
Cost Capitalized Subsequent to Acquisition 1,481      
Carrying amount of land and land improvements 3,517      
Carrying amount of building and improvements 19,342      
Accumulated depreciation 5,402      
Seniors Housing Operating | Fishers, IN 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,500      
Initial cost of building and improvements 14,500      
Cost Capitalized Subsequent to Acquisition 3,841      
Carrying amount of land and land improvements 1,500      
Carrying amount of building and improvements 18,341      
Accumulated depreciation 5,650      
Seniors Housing Operating | Fishers, IN 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,314      
Initial cost of building and improvements 33,731      
Cost Capitalized Subsequent to Acquisition 549      
Carrying amount of land and land improvements 2,314      
Carrying amount of building and improvements 34,280      
Accumulated depreciation 2,827      
Seniors Housing Operating | Fleet, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 32,776      
Carrying amount of land and land improvements 4,309      
Carrying amount of building and improvements 28,467      
Accumulated depreciation 9,881      
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 3,815      
Carrying amount of land and land improvements 385      
Carrying amount of building and improvements 16,832      
Accumulated depreciation 6,148      
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 3,005      
Carrying amount of land and land improvements 1,362      
Carrying amount of building and improvements 12,431      
Accumulated depreciation 5,119      
Seniors Housing Operating | Flower Mound, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,800      
Initial cost of building and improvements 8,414      
Cost Capitalized Subsequent to Acquisition 1,230      
Carrying amount of land and land improvements 1,800      
Carrying amount of building and improvements 9,644      
Accumulated depreciation 3,033      
Seniors Housing Operating | Flowood, 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 3,147      
Initial cost of building and improvements 24,350      
Cost Capitalized Subsequent to Acquisition 2,036      
Carrying amount of land and land improvements 3,147      
Carrying amount of building and improvements 26,386      
Accumulated depreciation 192      
Seniors Housing Operating | Folsom, CA 1        
SEC Schedule, 12-28, Real 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 560      
Carrying amount of land and land improvements 1,490      
Carrying amount of building and improvements 33,314      
Accumulated depreciation 8,761      
Seniors Housing Operating | Folsom, CA 2        
SEC Schedule, 12-28, 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 10,948      
Cost Capitalized Subsequent to Acquisition 1,566      
Carrying amount of land and land improvements 2,306      
Carrying amount of building and improvements 12,514      
Accumulated depreciation 1,848      
Seniors Housing Operating | Fort Wayne, IN 1        
SEC Schedule, 12-28, 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 923      
Carrying amount of land and land improvements 3,637      
Carrying amount of building and improvements 43,165      
Accumulated depreciation 4,932      
Seniors Housing Operating | Fort Wayne, IN 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,770      
Initial cost of building and improvements 19,930      
Cost Capitalized Subsequent to Acquisition 1,964      
Carrying amount of land and land improvements 1,770      
Carrying amount of building and improvements 21,894      
Accumulated depreciation 7,402      
Seniors Housing Operating | Fort Worth, TX 1        
SEC Schedule, 12-28, 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 14,443      
Carrying amount of land and land improvements 2,080      
Carrying amount of building and improvements 42,331      
Accumulated depreciation 14,873      
Seniors Housing Operating | Fort Worth, TX 2        
SEC Schedule, 12-28, 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 19,678      
Carrying amount of land and land improvements 7,160      
Carrying amount of building and improvements 57,025      
Accumulated depreciation 10,572      
Seniors Housing Operating | Fort Worth, TX 3        
SEC Schedule, 12-28, 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 147      
Carrying amount of land and land improvements 2,538      
Carrying amount of building and improvements 19,056      
Accumulated depreciation 2,439      
Seniors Housing Operating | Fort Worth, TX 4        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 26,084      
Carrying amount of land and land improvements 2,781      
Carrying amount of building and improvements 23,303      
Accumulated depreciation 2,801      
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 15,437      
Cost Capitalized Subsequent to Acquisition 2,970      
Carrying amount of land and land improvements 5,787      
Carrying amount of building and improvements 18,353      
Accumulated depreciation 3,349      
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 9,571      
Carrying amount of land and land improvements 3,456      
Carrying amount of building and improvements 34,815      
Accumulated depreciation 15,251      
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 22,139      
Initial cost of land and land improvements 896      
Initial cost of building and improvements 10,591      
Cost Capitalized Subsequent to Acquisition 25,465      
Carrying amount of land and land improvements 2,459      
Carrying amount of building and improvements 34,493      
Accumulated depreciation 6,015      
Seniors Housing Operating | Frome, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,720      
Initial cost of building and improvements 14,813      
Cost Capitalized Subsequent to Acquisition 1,836      
Carrying amount of land and land improvements 2,810      
Carrying amount of building and improvements 16,559      
Accumulated depreciation 4,512      
Seniors Housing Operating | Fullerton, CA 1        
SEC Schedule, 12-28, Real 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 2,450      
Carrying amount of land and land improvements 1,998      
Carrying amount of building and improvements 22,405      
Accumulated depreciation 7,611      
Seniors Housing Operating | Fullerton, CA 2        
SEC Schedule, 12-28, Real 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 6,195      
Cost Capitalized Subsequent to Acquisition 1,256      
Carrying amount of land and land improvements 1,801      
Carrying amount of building and improvements 7,451      
Accumulated depreciation 1,050      
Seniors Housing Operating | Fullerton, CA 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,739      
Initial cost of building and improvements 54,075      
Cost Capitalized Subsequent to Acquisition 1,449      
Carrying amount of land and land improvements 6,739      
Carrying amount of building and improvements 55,524      
Accumulated depreciation 4,721      
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 2,327      
Carrying amount of land and land improvements 847      
Carrying amount of building and improvements 13,466      
Accumulated depreciation 5,056      
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 27,036      
Cost Capitalized Subsequent to Acquisition 1,436      
Carrying amount of land and land improvements 1,950      
Carrying amount of building and improvements 28,430      
Accumulated depreciation 4,043      
Seniors Housing Operating | Gainesville, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 31,769      
Carrying amount of land and land improvements 2,374      
Carrying amount of building and improvements 29,395      
Accumulated depreciation 3,710      
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 4,549      
Cost Capitalized Subsequent to Acquisition 1,541      
Carrying amount of land and land improvements 2,107      
Carrying amount of building and improvements 6,090      
Accumulated depreciation 1,174      
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 4,699      
Carrying amount of land and land improvements 1,164      
Carrying amount of building and improvements 15,509      
Accumulated depreciation 10,671      
Seniors Housing Operating | Georgetown, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,481      
Initial cost of building and improvements 31,586      
Cost Capitalized Subsequent to Acquisition 1,210      
Carrying amount of land and land improvements 5,481      
Carrying amount of building and improvements 32,796      
Accumulated depreciation 545      
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 6,029      
Carrying amount of land and land improvements 1,583      
Carrying amount of building and improvements 21,953      
Accumulated depreciation 7,839      
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 3,226      
Carrying amount of land and land improvements 2,208      
Carrying amount of building and improvements 31,424      
Accumulated depreciation 12,656      
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 3,090      
Carrying amount of land and land improvements 4,718      
Carrying amount of building and improvements 38,202      
Accumulated depreciation 14,690      
Seniors Housing Operating | Glendale, AZ 1        
SEC Schedule, 12-28, 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 124      
Carrying amount of land and land improvements 3,115      
Carrying amount of building and improvements 24,791      
Accumulated depreciation 2,144      
Seniors Housing Operating | Glendale, AZ 2        
SEC Schedule, 12-28, 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 1,534      
Carrying amount of land and land improvements 136      
Carrying amount of building and improvements 1,398      
Accumulated depreciation 12      
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 6,996      
Carrying amount of land and land improvements 2,090      
Carrying amount of building and improvements 76,284      
Accumulated depreciation 26,658      
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 1,793      
Carrying amount of land and land improvements 1,634      
Carrying amount of building and improvements 35,192      
Accumulated depreciation 11,695      
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 1,001      
Carrying amount of land and land improvements 2,040      
Carrying amount of building and improvements 31,671      
Accumulated depreciation 10,669      
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 13,147      
Cost Capitalized Subsequent to Acquisition 60      
Carrying amount of land and land improvements 1,050      
Carrying amount of building and improvements 13,207      
Accumulated depreciation 1,567      
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 74      
Carrying amount of land and land improvements 1,884      
Carrying amount of building and improvements 23,897      
Accumulated depreciation 1,791      
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 15,745      
Cost Capitalized Subsequent to Acquisition 527      
Carrying amount of land and land improvements 2,354      
Carrying amount of building and improvements 16,097      
Accumulated depreciation 2,432      
Seniors Housing Operating | Grandville, 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 1,533      
Initial cost of building and improvements 7,219      
Cost Capitalized Subsequent to Acquisition 424      
Carrying amount of land and land improvements 1,539      
Carrying amount of building and improvements 7,637      
Accumulated depreciation 839      
Seniors Housing Operating | Granger, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,670      
Initial cost of building and improvements 21,280      
Cost Capitalized Subsequent to Acquisition 2,860      
Carrying amount of land and land improvements 1,670      
Carrying amount of building and improvements 24,140      
Accumulated depreciation 8,072      
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 8,874      
Cost Capitalized Subsequent to Acquisition 247      
Carrying amount of land and land improvements 561      
Carrying amount of building and improvements 9,121      
Accumulated depreciation 1,101      
Seniors Housing Operating | Grapevine, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,220      
Initial cost of building and improvements 17,648      
Cost Capitalized Subsequent to Acquisition 859      
Carrying amount of land and land improvements 2,220      
Carrying amount of building and improvements 18,507      
Accumulated depreciation 3,920      
Seniors Housing Operating | Greeley, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,077      
Initial cost of building and improvements 18,051      
Cost Capitalized Subsequent to Acquisition 630      
Carrying amount of land and land improvements 1,077      
Carrying amount of building and improvements 18,681      
Accumulated depreciation 3,626      
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 22,795      
Cost Capitalized Subsequent to Acquisition 2,622      
Carrying amount of land and land improvements 993      
Carrying amount of building and improvements 25,317      
Accumulated depreciation 3,365      
Seniors Housing Operating | Greenwood, IN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,550      
Initial cost of building and improvements 22,770      
Cost Capitalized Subsequent to Acquisition 484      
Carrying amount of land and land improvements 1,550      
Carrying amount of building and improvements 23,254      
Accumulated depreciation 7,886      
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 6,566      
Cost Capitalized Subsequent to Acquisition 939      
Carrying amount of land and land improvements 1,966      
Carrying amount of building and improvements 7,505      
Accumulated depreciation 971      
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 1,046      
Carrying amount of land and land improvements 677      
Carrying amount of building and improvements 6,622      
Accumulated depreciation 2,004      
Seniors Housing Operating | Grosse Pointe Woods, MI 1        
SEC Schedule, 12-28, 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 1,197      
Carrying amount of land and land improvements 961      
Carrying amount of building and improvements 14,848      
Accumulated depreciation 4,906      
Seniors Housing Operating | Grosse Pointe Woods, MI 2        
SEC Schedule, 12-28, Real 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 1,280      
Carrying amount of land and land improvements 1,452      
Carrying amount of building and improvements 33,035      
Accumulated depreciation 10,821      
Seniors Housing Operating | Grove City, OH 1        
SEC Schedule, 12-28, 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 2,506      
Carrying amount of land and land improvements 3,509      
Carrying amount of building and improvements 88,336      
Accumulated depreciation 14,037      
Seniors Housing Operating | Grove City, OH 2        
SEC Schedule, 12-28, Real 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 5,246      
Cost Capitalized Subsequent to Acquisition 749      
Carrying amount of land and land improvements 1,122      
Carrying amount of building and improvements 5,972      
Accumulated depreciation 1,069      
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 3,047      
Carrying amount of land and land improvements 957      
Carrying amount of building and improvements 30,911      
Accumulated depreciation 10,408      
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 1,120      
Carrying amount of land and land improvements 539      
Carrying amount of building and improvements 17,464      
Accumulated depreciation 4,510      
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 10,437      
Initial cost of land and land improvements 984      
Initial cost of building and improvements 10,991      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 984      
Carrying amount of building and improvements 10,991      
Accumulated depreciation 2,349      
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 11,222      
Initial cost of land and land improvements 1,128      
Initial cost of building and improvements 10,940      
Cost Capitalized Subsequent to Acquisition 1,165      
Carrying amount of land and land improvements 1,209      
Carrying amount of building and improvements 12,024      
Accumulated depreciation 2,312      
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 10,416      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 721      
Carrying amount of building and improvements 10,416      
Accumulated depreciation 2,094      
Seniors Housing Operating | Harahan, 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 2,628      
Initial cost of building and improvements 38,864      
Cost Capitalized Subsequent to Acquisition 190      
Carrying amount of land and land improvements 2,628      
Carrying amount of building and improvements 39,054      
Accumulated depreciation 2,438      
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 4,940      
Cost Capitalized Subsequent to Acquisition 411      
Carrying amount of land and land improvements 876      
Carrying amount of building and improvements 5,333      
Accumulated depreciation 1,015      
Seniors Housing Operating | Hattiesburg, MS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 450      
Initial cost of building and improvements 13,469      
Cost Capitalized Subsequent to Acquisition 480      
Carrying amount of land and land improvements 450      
Carrying amount of building and improvements 13,949      
Accumulated depreciation 4,607      
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 4,072      
Carrying amount of land and land improvements 1,907      
Carrying amount of building and improvements 38,038      
Accumulated depreciation 12,756      
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 19,045      
Cost Capitalized Subsequent to Acquisition 141      
Carrying amount of land and land improvements 1,857      
Carrying amount of building and improvements 19,179      
Accumulated depreciation 4,157      
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 9,488      
Cost Capitalized Subsequent to Acquisition 1,818      
Carrying amount of land and land improvements 2,224      
Carrying amount of building and improvements 10,959      
Accumulated depreciation 1,427      
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 1,765      
Carrying amount of land and land improvements 1,298      
Carrying amount of building and improvements 13,257      
Accumulated depreciation 5,605      
Seniors Housing Operating | Henrico, 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 3,955      
Initial cost of building and improvements 30,682      
Cost Capitalized Subsequent to Acquisition 2,968      
Carrying amount of land and land improvements 3,955      
Carrying amount of building and improvements 33,650      
Accumulated depreciation 280      
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 15,449      
Cost Capitalized Subsequent to Acquisition 2,464      
Carrying amount of land and land improvements 1,084      
Carrying amount of building and improvements 17,913      
Accumulated depreciation 2,470      
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 28,419      
Cost Capitalized Subsequent to Acquisition 338      
Carrying amount of land and land improvements 1,600      
Carrying amount of building and improvements 28,757      
Accumulated depreciation 4,133      
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 21,735      
Cost Capitalized Subsequent to Acquisition 1,358      
Carrying amount of land and land improvements 1,518      
Carrying amount of building and improvements 22,930      
Accumulated depreciation 3,692      
Seniors Housing Operating | High Wycombe, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,567      
Initial cost of building and improvements 13,422      
Cost Capitalized Subsequent to Acquisition 871      
Carrying amount of land and land improvements 3,564      
Carrying amount of building and improvements 14,296      
Accumulated depreciation 2,750      
Seniors Housing Operating | Highland Park, IL 1        
SEC Schedule, 12-28, 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 1,438      
Carrying amount of land and land improvements 2,820      
Carrying amount of building and improvements 17,270      
Accumulated depreciation 5,311      
Seniors Housing Operating | Highland Park, IL 2        
SEC Schedule, 12-28, 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 2,270      
Carrying amount of land and land improvements 2,271      
Carrying amount of building and improvements 27,562      
Accumulated depreciation 9,986      
Seniors Housing Operating | Hindhead, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 17,852      
Initial cost of building and improvements 48,645      
Cost Capitalized Subsequent to Acquisition 4,480      
Carrying amount of land and land improvements 18,439      
Carrying amount of building and improvements 52,538      
Accumulated depreciation 10,366      
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 821      
Carrying amount of land and land improvements 1,444      
Carrying amount of building and improvements 33,109      
Accumulated depreciation 8,789      
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 4,156      
Carrying amount of land and land improvements 4,331      
Carrying amount of building and improvements 39,119      
Accumulated depreciation 13,067      
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 56,046      
Cost Capitalized Subsequent to Acquisition 2,731      
Carrying amount of land and land improvements 23,053      
Carrying amount of building and improvements 58,642      
Accumulated depreciation 11,766      
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 18,043      
Cost Capitalized Subsequent to Acquisition 915      
Carrying amount of land and land improvements 2,184      
Carrying amount of building and improvements 18,939      
Accumulated depreciation 3,346      
Seniors Housing Operating | Horley, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,332      
Initial cost of building and improvements 12,144      
Cost Capitalized Subsequent to Acquisition 1,676      
Carrying amount of land and land improvements 2,408      
Carrying amount of building and improvements 13,744      
Accumulated depreciation 4,436      
Seniors Housing Operating | Houston, TX 1        
SEC Schedule, 12-28, 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 16,079      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 960      
Carrying amount of building and improvements 16,079      
Accumulated depreciation 11,643      
Seniors Housing Operating | Houston, TX 2        
SEC Schedule, 12-28, 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 11,001      
Carrying amount of land and land improvements 3,830      
Carrying amount of building and improvements 66,675      
Accumulated depreciation 24,696      
Seniors Housing Operating | Houston, TX 3        
SEC Schedule, 12-28, 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 42,432      
Carrying amount of land and land improvements 1,040      
Carrying amount of building and improvements 41,392      
Accumulated depreciation 13,499      
Seniors Housing Operating | Houston, TX 4        
SEC Schedule, 12-28, 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 19,761      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 18,011      
Accumulated depreciation 4,334      
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 2,611      
Carrying amount of land and land improvements 1,158      
Carrying amount of building and improvements 24,096      
Accumulated depreciation 8,388      
Seniors Housing Operating | Hudson, OH 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,586      
Initial cost of building and improvements 11,314      
Cost Capitalized Subsequent to Acquisition 280      
Carrying amount of land and land improvements 1,594      
Carrying amount of building and improvements 11,586      
Accumulated depreciation 828      
Seniors Housing Operating | Hudson, OH 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,754      
Initial cost of building and improvements 34,395      
Cost Capitalized Subsequent to Acquisition 738      
Carrying amount of land and land improvements 1,754      
Carrying amount of building and improvements 35,133      
Accumulated depreciation 2,298      
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 3,720      
Carrying amount of land and land improvements 3,931      
Carrying amount of building and improvements 34,769      
Accumulated depreciation 13,061      
Seniors Housing Operating | Hutchinson, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 600      
Initial cost of building and improvements 10,590      
Cost Capitalized Subsequent to Acquisition 6,346      
Carrying amount of land and land improvements 600      
Carrying amount of building and improvements 16,936      
Accumulated depreciation 5,465      
Seniors Housing Operating | Independence, MO 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 13,981      
Initial cost of land and land improvements 1,584      
Initial cost of building and improvements 14,507      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,584      
Carrying amount of building and improvements 14,507      
Accumulated depreciation 2,507      
Seniors Housing Operating | Independence, MO 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,215      
Initial cost of building and improvements 24,471      
Cost Capitalized Subsequent to Acquisition 1,150      
Carrying amount of land and land improvements 3,250      
Carrying amount of building and improvements 25,586      
Accumulated depreciation 4,605      
Seniors Housing Operating | Independence, MO 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 10,335      
Initial cost of land and land improvements 2,017      
Initial cost of building and improvements 15,796      
Cost Capitalized Subsequent to Acquisition 1,061      
Carrying amount of land and land improvements 2,098      
Carrying amount of building and improvements 16,776      
Accumulated depreciation 1,680      
Seniors Housing Operating | Indianola, 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 2,211      
Initial cost of building and improvements 11,501      
Cost Capitalized Subsequent to Acquisition 657      
Carrying amount of land and land improvements 2,192      
Carrying amount of building and improvements 12,177      
Accumulated depreciation 1,177      
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 6,011      
Cost Capitalized Subsequent to Acquisition 1,086      
Carrying amount of land and land improvements 951      
Carrying amount of building and improvements 7,037      
Accumulated depreciation 1,028      
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 12,490      
Cost Capitalized Subsequent to Acquisition 771      
Carrying amount of land and land improvements 1,386      
Carrying amount of building and improvements 13,245      
Accumulated depreciation 2,243      
Seniors Housing Operating | Jacksonville, FL 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 750      
Initial cost of building and improvements 25,231      
Cost Capitalized Subsequent to Acquisition 341      
Carrying amount of land and land improvements 750      
Carrying amount of building and improvements 25,572      
Accumulated depreciation 5,003      
Seniors Housing Operating | Jacksonville, FL 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 26,381      
Cost Capitalized Subsequent to Acquisition 2,189      
Carrying amount of land and land improvements 1,691      
Carrying amount of building and improvements 26,879      
Accumulated depreciation 5,260      
Seniors Housing Operating | Jacksonville, FL 3        
SEC Schedule, 12-28, Real 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 23,400      
Carrying amount of land and land improvements 6,550      
Carrying amount of building and improvements 30,046      
Accumulated depreciation 5,377      
Seniors Housing Operating | Jeannette, 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 1,642      
Initial cost of building and improvements 22,377      
Cost Capitalized Subsequent to Acquisition 1,192      
Carrying amount of land and land improvements 1,642      
Carrying amount of building and improvements 23,569      
Accumulated depreciation 1,985      
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 1,527      
Carrying amount of land and land improvements 1,588      
Carrying amount of building and improvements 24,804      
Accumulated depreciation 8,445      
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 10,720      
Initial cost of land and land improvements 1,440      
Initial cost of building and improvements 11,675      
Cost Capitalized Subsequent to Acquisition 1,347      
Carrying amount of land and land improvements 1,607      
Carrying amount of building and improvements 12,855      
Accumulated depreciation 2,812      
Seniors Housing Operating | Kalamazoo, MI 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,511      
Initial cost of building and improvements 45,942      
Cost Capitalized Subsequent to Acquisition 969      
Carrying amount of land and land improvements 6,291      
Carrying amount of building and improvements 48,131      
Accumulated depreciation 10,507      
Seniors Housing Operating | Kalamazoo, MI 2        
SEC Schedule, 12-28, 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 1,274      
Carrying amount of land and land improvements 1,274      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
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 1,710      
Carrying amount of land and land improvements 1,718      
Carrying amount of building and improvements 30,351      
Accumulated depreciation 10,553      
Seniors Housing Operating | Kansas City, MO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,002      
Initial cost of land and land improvements 1,938      
Initial cost of building and improvements 11,694      
Cost Capitalized Subsequent to Acquisition 974      
Carrying amount of land and land improvements 1,938      
Carrying amount of building and improvements 12,668      
Accumulated depreciation 1,378      
Seniors Housing Operating | Kelowna, BC 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 3,988      
Initial cost of land and land improvements 2,688      
Initial cost of building and improvements 13,647      
Cost Capitalized Subsequent to Acquisition 2,425      
Carrying amount of land and land improvements 2,856      
Carrying amount of building and improvements 15,904      
Accumulated depreciation 5,926      
Seniors Housing Operating | Kelowna, BC 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,302      
Initial cost of building and improvements 46,346      
Cost Capitalized Subsequent to Acquisition 6,122      
Carrying amount of land and land improvements 6,460      
Carrying amount of building and improvements 52,310      
Accumulated depreciation 5,565      
Seniors Housing Operating | Kelowna, BC 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,443      
Initial cost of building and improvements 42,606      
Cost Capitalized Subsequent to Acquisition 5,667      
Carrying amount of land and land improvements 5,579      
Carrying amount of building and improvements 48,137      
Accumulated depreciation 5,986      
Seniors Housing Operating | Kelowna, BC 4        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,171      
Initial cost of building and improvements 51,949      
Cost Capitalized Subsequent to Acquisition 6,305      
Carrying amount of land and land improvements 6,326      
Carrying amount of building and improvements 58,099      
Accumulated depreciation 5,676      
Seniors Housing Operating | Kelowna, BC 5        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,718      
Initial cost of building and improvements 44,690      
Cost Capitalized Subsequent to Acquisition 5,000      
Carrying amount of land and land improvements 3,811      
Carrying amount of building and improvements 49,597      
Accumulated depreciation 5,796      
Seniors Housing Operating | Kelowna, BC 6        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,069      
Initial cost of building and improvements 11,524      
Cost Capitalized Subsequent to Acquisition 1,348      
Carrying amount of land and land improvements 3,146      
Carrying amount of building and improvements 12,795      
Accumulated depreciation 1,285      
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 7,908      
Carrying amount of land and land improvements 3,532      
Carrying amount of building and improvements 37,280      
Accumulated depreciation 17,750      
Seniors Housing Operating | Kenner, LA 1        
SEC Schedule, 12-28, Real 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 5,796      
Carrying amount of land and land improvements 1,100      
Carrying amount of building and improvements 15,832      
Accumulated depreciation 12,034      
Seniors Housing Operating | Kenner, LA 2        
SEC Schedule, 12-28, 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 12,344      
Cost Capitalized Subsequent to Acquisition 755      
Carrying amount of land and land improvements 814      
Carrying amount of building and improvements 13,094      
Accumulated depreciation 1,641      
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 1,587      
Carrying amount of land and land improvements 1,186      
Carrying amount of building and improvements 24,397      
Accumulated depreciation 8,209      
Seniors Housing Operating | Kingsport, 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 2,123      
Initial cost of building and improvements 33,130      
Cost Capitalized Subsequent to Acquisition 110      
Carrying amount of land and land improvements 2,123      
Carrying amount of building and improvements 33,240      
Accumulated depreciation 2,248      
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 0      
Initial cost of land and land improvements 1,030      
Initial cost of building and improvements 11,416      
Cost Capitalized Subsequent to Acquisition 2,161      
Carrying amount of land and land improvements 1,409      
Carrying amount of building and improvements 13,198      
Accumulated depreciation 3,503      
Seniors Housing Operating | Kingwood, TX 1        
SEC Schedule, 12-28, 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 1,756      
Carrying amount of land and land improvements 480      
Carrying amount of building and improvements 11,533      
Accumulated depreciation 4,305      
Seniors Housing Operating | Kingwood, TX 2        
SEC Schedule, 12-28, Real 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 2,733      
Carrying amount of land and land improvements 1,683      
Carrying amount of building and improvements 26,940      
Accumulated depreciation 6,657      
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 2,297      
Carrying amount of land and land improvements 1,880      
Carrying amount of building and improvements 6,612      
Accumulated depreciation 2,562      
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 8,381      
Initial cost of land and land improvements 1,341      
Initial cost of building and improvements 13,939      
Cost Capitalized Subsequent to Acquisition 5,591      
Carrying amount of land and land improvements 1,447      
Carrying amount of building and improvements 19,424      
Accumulated depreciation 5,390      
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 2,794      
Carrying amount of land and land improvements 1,335      
Carrying amount of building and improvements 12,968      
Accumulated depreciation 3,121      
Seniors Housing Operating | Kuna, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 20      
Carrying amount of land and land improvements 20      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
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 1,463      
Carrying amount of land and land improvements 2,996      
Carrying amount of building and improvements 18,008      
Accumulated depreciation 6,444      
Seniors Housing Operating | La Vista, NE        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,025      
Initial cost of land and land improvements 1,199      
Initial cost of building and improvements 14,840      
Cost Capitalized Subsequent to Acquisition 887      
Carrying amount of land and land improvements 1,199      
Carrying amount of building and improvements 15,727      
Accumulated depreciation 1,523      
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 6,591      
Initial cost of land and land improvements 1,422      
Initial cost of building and improvements 6,066      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,422      
Carrying amount of building and improvements 6,066      
Accumulated depreciation 1,486      
Seniors Housing Operating | Lafayette, 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 2,618      
Initial cost of building and improvements 22,986      
Cost Capitalized Subsequent to Acquisition 1,889      
Carrying amount of land and land improvements 2,618      
Carrying amount of building and improvements 24,875      
Accumulated depreciation 196      
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 2,854      
Carrying amount of land and land improvements 1,878      
Carrying amount of building and improvements 14,574      
Accumulated depreciation 6,298      
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 22,414      
Carrying amount of land and land improvements 12,894      
Carrying amount of building and improvements 98,266      
Accumulated depreciation 31,611      
Seniors Housing Operating | Laguna Woods, CA 1        
SEC Schedule, 12-28, 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 15,167      
Carrying amount of land and land improvements 11,280      
Carrying amount of building and improvements 91,652      
Accumulated depreciation 27,206      
Seniors Housing Operating | Laguna Woods, CA 2        
SEC Schedule, 12-28, 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 14,397      
Carrying amount of land and land improvements 9,150      
Carrying amount of building and improvements 72,239      
Accumulated depreciation 21,981      
Seniors Housing Operating | Lake Havasu 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 544      
Carrying amount of land and land improvements 364      
Carrying amount of building and improvements 2,143      
Accumulated depreciation 647      
Seniors Housing Operating | Lake Jackson, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 13,621      
Carrying amount of land and land improvements 2,046      
Carrying amount of building and improvements 11,575      
Accumulated depreciation 141      
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 3,918      
Carrying amount of land and land improvements 1,470      
Carrying amount of building and improvements 13,748      
Accumulated depreciation 6,186      
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 19,791      
Cost Capitalized Subsequent to Acquisition 249      
Carrying amount of land and land improvements 2,416      
Carrying amount of building and improvements 20,040      
Accumulated depreciation 3,310      
Seniors Housing Operating | Lakeview, 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 733      
Initial cost of building and improvements 2,212      
Cost Capitalized Subsequent to Acquisition 135      
Carrying amount of land and land improvements 733      
Carrying amount of building and improvements 2,347      
Accumulated depreciation 358      
Seniors Housing Operating | Lakewood, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,836      
Initial cost of land and land improvements 1,031      
Initial cost of building and improvements 17,410      
Cost Capitalized Subsequent to Acquisition 839      
Carrying amount of land and land improvements 1,031      
Carrying amount of building and improvements 18,249      
Accumulated depreciation 1,549      
Seniors Housing Operating | Lakewood Ranch, FL 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 650      
Initial cost of building and improvements 6,714      
Cost Capitalized Subsequent to Acquisition 2,102      
Carrying amount of land and land improvements 650      
Carrying amount of building and improvements 8,816      
Accumulated depreciation 2,606      
Seniors Housing Operating | Lakewood Ranch, FL 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,000      
Initial cost of building and improvements 22,388      
Cost Capitalized Subsequent to Acquisition 809      
Carrying amount of land and land improvements 1,000      
Carrying amount of building and improvements 23,197      
Accumulated depreciation 6,907      
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 6,153      
Carrying amount of land and land improvements 712      
Carrying amount of building and improvements 21,436      
Accumulated depreciation 7,950      
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 7,699      
Cost Capitalized Subsequent to Acquisition 503      
Carrying amount of land and land improvements 1,035      
Carrying amount of building and improvements 8,196      
Accumulated depreciation 1,425      
Seniors Housing Operating | Lancaster, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,680      
Initial cost of building and improvements 14,039      
Cost Capitalized Subsequent to Acquisition 209      
Carrying amount of land and land improvements 1,680      
Carrying amount of building and improvements 14,248      
Accumulated depreciation 2,816      
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 11,996      
Initial cost of land and land improvements 1,897      
Initial cost of building and improvements 12,202      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,897      
Carrying amount of building and improvements 12,202      
Accumulated depreciation 2,801      
Seniors Housing Operating | Las Vegas, NV 1        
SEC Schedule, 12-28, 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 4,957      
Carrying amount of land and land improvements 5,908      
Carrying amount of building and improvements 41,912      
Accumulated depreciation 9,385      
Seniors Housing Operating | Las Vegas, NV 2        
SEC Schedule, 12-28, Real 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 1,109      
Carrying amount of land and land improvements 1,292      
Carrying amount of building and improvements 14,839      
Accumulated depreciation 2,276      
Seniors Housing Operating | Las Vegas, NV 3        
SEC Schedule, 12-28, 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 3,217      
Carrying amount of land and land improvements 2,428      
Carrying amount of building and improvements 25,246      
Accumulated depreciation 4,511      
Seniors Housing Operating | Laval, QC 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 18,560      
Initial cost of land and land improvements 2,105      
Initial cost of building and improvements 32,161      
Cost Capitalized Subsequent to Acquisition 6,106      
Carrying amount of land and land improvements 2,174      
Carrying amount of building and improvements 38,198      
Accumulated depreciation 8,679      
Seniors Housing Operating | Laval, QC 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 3,392      
Initial cost of land and land improvements 2,383      
Initial cost of building and improvements 5,968      
Cost Capitalized Subsequent to Acquisition 1,722      
Carrying amount of land and land improvements 2,462      
Carrying amount of building and improvements 7,611      
Accumulated depreciation 1,674      
Seniors Housing Operating | Laval, QC 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 17,231      
Initial cost of building and improvements 113,967      
Cost Capitalized Subsequent to Acquisition 13,138      
Carrying amount of land and land improvements 17,231      
Carrying amount of building and improvements 127,105      
Accumulated depreciation 1,357      
Seniors Housing Operating | Lawrence, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 250      
Initial cost of building and improvements 8,716      
Cost Capitalized Subsequent to Acquisition 322      
Carrying amount of land and land improvements 250      
Carrying amount of building and improvements 9,038      
Accumulated depreciation 2,685      
Seniors Housing Operating | Lawrenceville, GA 1        
SEC Schedule, 12-28, Real 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 1,493      
Carrying amount of land and land improvements 1,562      
Carrying amount of building and improvements 30,434      
Accumulated depreciation 10,083      
Seniors Housing Operating | Lawrenceville, GA 2        
SEC Schedule, 12-28, 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 24,173      
Cost Capitalized Subsequent to Acquisition 2,749      
Carrying amount of land and land improvements 3,583      
Carrying amount of building and improvements 26,852      
Accumulated depreciation 3,268      
Seniors Housing Operating | Leatherhead, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,682      
Initial cost of building and improvements 17,835      
Cost Capitalized Subsequent to Acquisition 1,200      
Carrying amount of land and land improvements 4,674      
Carrying amount of building and improvements 19,043      
Accumulated depreciation 3,547      
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 11,938      
Carrying amount of land and land improvements 5,610      
Carrying amount of building and improvements 41,311      
Accumulated depreciation 15,080      
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 1,932      
Carrying amount of land and land improvements 927      
Carrying amount of building and improvements 28,082      
Accumulated depreciation 10,227      
Seniors Housing Operating | Levis, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,125      
Initial cost of land and land improvements 3,322      
Initial cost of building and improvements 24,502      
Cost Capitalized Subsequent to Acquisition 2,878      
Carrying amount of land and land improvements 3,322      
Carrying amount of building and improvements 27,380      
Accumulated depreciation 3,052      
Seniors Housing Operating | Lexington, SC 1        
SEC Schedule, 12-28, Real 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 15,301      
Cost Capitalized Subsequent to Acquisition 2,420      
Carrying amount of land and land improvements 1,869      
Carrying amount of building and improvements 17,695      
Accumulated depreciation 2,174      
Seniors Housing Operating | Lexington, SC 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,171      
Initial cost of building and improvements 22,214      
Cost Capitalized Subsequent to Acquisition 1,421      
Carrying amount of land and land improvements 3,171      
Carrying amount of building and improvements 23,635      
Accumulated depreciation 343      
Seniors Housing Operating | Libertyville, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,500      
Initial cost of building and improvements 40,024      
Cost Capitalized Subsequent to Acquisition 5,467      
Carrying amount of land and land improvements 6,500      
Carrying amount of building and improvements 45,491      
Accumulated depreciation 14,040      
Seniors Housing Operating | Lincoln, NE 1        
SEC Schedule, 12-28, 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 802      
Carrying amount of land and land improvements 390      
Carrying amount of building and improvements 14,609      
Accumulated depreciation 5,098      
Seniors Housing Operating | Lincoln, NE 2        
SEC Schedule, 12-28, 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 10,637      
Cost Capitalized Subsequent to Acquisition 2,179      
Carrying amount of land and land improvements 1,054      
Carrying amount of building and improvements 12,646      
Accumulated depreciation 1,721      
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 3,021      
Carrying amount of land and land improvements 170      
Carrying amount of building and improvements 22,818      
Accumulated depreciation 7,836      
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 2,848      
Carrying amount of land and land improvements 885      
Carrying amount of building and improvements 24,747      
Accumulated depreciation 8,708      
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 12,732      
Carrying amount of land and land improvements 1,362      
Carrying amount of building and improvements 30,518      
Accumulated depreciation 9,092      
Seniors Housing Operating | Lititz, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,200      
Initial cost of building and improvements 13,836      
Cost Capitalized Subsequent to Acquisition 314      
Carrying amount of land and land improvements 1,200      
Carrying amount of building and improvements 14,150      
Accumulated depreciation 2,784      
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 6,724      
Carrying amount of land and land improvements 3,468      
Carrying amount of building and improvements 45,067      
Accumulated depreciation 14,688      
Seniors Housing Operating | Littleton, 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 3,378      
Initial cost of building and improvements 26,360      
Cost Capitalized Subsequent to Acquisition 1,843      
Carrying amount of land and land improvements 3,378      
Carrying amount of building and improvements 28,203      
Accumulated depreciation 213      
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 2,556      
Carrying amount of land and land improvements 8,103      
Carrying amount of building and improvements 46,877      
Accumulated depreciation 9,959      
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 2,457      
Carrying amount of land and land improvements 2,218      
Carrying amount of building and improvements 62,312      
Accumulated depreciation 20,692      
Seniors Housing Operating | London, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 14,900      
Carrying amount of land and land improvements 3,224      
Carrying amount of building and improvements 11,676      
Accumulated depreciation 3,375      
Seniors Housing Operating | London, ON 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,475      
Initial cost of land and land improvements 1,969      
Initial cost of building and improvements 16,985      
Cost Capitalized Subsequent to Acquisition 3,535      
Carrying amount of land and land improvements 2,068      
Carrying amount of building and improvements 20,421      
Accumulated depreciation 5,545      
Seniors Housing Operating | London, ON 2        
SEC Schedule, 12-28, Real 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 2,149      
Carrying amount of land and land improvements 1,643      
Carrying amount of building and improvements 15,582      
Accumulated depreciation 4,267      
Seniors Housing Operating | Londonderry, NH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,982      
Initial cost of land and land improvements 2,872      
Initial cost of building and improvements 24,521      
Cost Capitalized Subsequent to Acquisition 1,357      
Carrying amount of land and land improvements 2,872      
Carrying amount of building and improvements 25,878      
Accumulated depreciation 2,351      
Seniors Housing Operating | Long 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 26,243      
Carrying amount of land and land improvements 2,733      
Carrying amount of building and improvements 23,510      
Accumulated depreciation 2,824      
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 11,825      
Cost Capitalized Subsequent to Acquisition 2,935      
Carrying amount of land and land improvements 1,895      
Carrying amount of building and improvements 14,621      
Accumulated depreciation 2,359      
Seniors Housing Operating | Longueuil, QC 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,111      
Initial cost of land and land improvements 3,992      
Initial cost of building and improvements 23,711      
Cost Capitalized Subsequent to Acquisition 4,677      
Carrying amount of land and land improvements 4,276      
Carrying amount of building and improvements 28,104      
Accumulated depreciation 8,841      
Seniors Housing Operating | Longueuil, QC 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 18,119      
Initial cost of land and land improvements 9,049      
Initial cost of building and improvements 70,707      
Cost Capitalized Subsequent to Acquisition 11,134      
Carrying amount of land and land improvements 9,049      
Carrying amount of building and improvements 81,841      
Accumulated depreciation 2,689      
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 1,412      
Carrying amount of land and land improvements 610      
Carrying amount of building and improvements 6,932      
Accumulated depreciation 2,646      
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 11,309      
Initial cost of land and land improvements 1,409      
Initial cost of building and improvements 13,060      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,409      
Carrying amount of building and improvements 13,060      
Accumulated depreciation 2,066      
Seniors Housing Operating | Los Angeles, CA 1        
SEC Schedule, 12-28, 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 114,438      
Cost Capitalized Subsequent to Acquisition 10,793      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 125,231      
Accumulated depreciation 45,785      
Seniors Housing Operating | Los Angeles, CA 2        
SEC Schedule, 12-28, 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 4,813      
Carrying amount of land and land improvements 3,540      
Carrying amount of building and improvements 23,820      
Accumulated depreciation 9,496      
Seniors Housing Operating | Los Angeles, CA 3        
SEC Schedule, 12-28, 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 6,976      
Carrying amount of land and land improvements 91      
Carrying amount of building and improvements 34,935      
Accumulated depreciation 9,490      
Seniors Housing Operating | Louisville, KY 1        
SEC Schedule, 12-28, 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 4,494      
Carrying amount of land and land improvements 2,420      
Carrying amount of building and improvements 25,310      
Accumulated depreciation 9,465      
Seniors Housing Operating | Louisville, KY 2        
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 2,069      
Carrying amount of land and land improvements 1,607      
Carrying amount of building and improvements 22,388      
Accumulated depreciation 8,016      
Seniors Housing Operating | Louisville, CO 1        
SEC Schedule, 12-28, 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 22,757      
Carrying amount of land and land improvements 1,939      
Carrying amount of building and improvements 36,086      
Accumulated depreciation 6,425      
Seniors Housing Operating | Louisville, CO 2        
SEC Schedule, 12-28, Real 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 19,142      
Carrying amount of land and land improvements 1,156      
Carrying amount of building and improvements 27,424      
Accumulated depreciation 3,603      
Seniors Housing Operating | Louisville, CO 3        
SEC Schedule, 12-28, Real 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 56,566      
Carrying amount of land and land improvements 2,584      
Carrying amount of building and improvements 62,098      
Accumulated depreciation 13,617      
Seniors Housing Operating | Louisville, CO 4        
SEC Schedule, 12-28, Real 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 11,120      
Carrying amount of land and land improvements 1,391      
Carrying amount of building and improvements 18,599      
Accumulated depreciation 3,246      
Seniors Housing Operating | Louisville, CO 5        
SEC Schedule, 12-28, Real 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 38,278      
Carrying amount of land and land improvements 2,332      
Carrying amount of building and improvements 49,577      
Accumulated depreciation 8,905      
Seniors Housing Operating | Louisville, KY 3        
SEC Schedule, 12-28, Real 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 9,254      
Cost Capitalized Subsequent to Acquisition 1,189      
Carrying amount of land and land improvements 1,613      
Carrying amount of building and improvements 10,418      
Accumulated depreciation 1,609      
Seniors Housing Operating | Louisville, KY 4        
SEC Schedule, 12-28, 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 10,768      
Cost Capitalized Subsequent to Acquisition 3,261      
Carrying amount of land and land improvements 2,459      
Carrying amount of building and improvements 13,844      
Accumulated depreciation 2,091      
Seniors Housing Operating | Ludington, 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 747      
Initial cost of building and improvements 6,406      
Cost Capitalized Subsequent to Acquisition 157      
Carrying amount of land and land improvements 747      
Carrying amount of building and improvements 6,563      
Accumulated depreciation 476      
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 3,340      
Carrying amount of land and land improvements 3,793      
Carrying amount of building and improvements 47,912      
Accumulated depreciation 16,622      
Seniors Housing Operating | Macungie, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 27,077      
Carrying amount of land and land improvements 2,558      
Carrying amount of building and improvements 24,519      
Accumulated depreciation 2,776      
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 8,306      
Cost Capitalized Subsequent to Acquisition 53      
Carrying amount of land and land improvements 2,092      
Carrying amount of building and improvements 8,360      
Accumulated depreciation 778      
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 1,578      
Carrying amount of land and land improvements 1,644      
Carrying amount of building and improvements 28,788      
Accumulated depreciation 6,464      
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 3,428      
Carrying amount of land and land improvements 1,804      
Carrying amount of building and improvements 20,469      
Accumulated depreciation 8,721      
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 16,609      
Cost Capitalized Subsequent to Acquisition 327      
Carrying amount of land and land improvements 2,979      
Carrying amount of building and improvements 16,903      
Accumulated depreciation 2,709      
Seniors Housing Operating | Mansfield, TX 1        
SEC Schedule, 12-28, 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 896      
Carrying amount of land and land improvements 660      
Carrying amount of building and improvements 6,147      
Accumulated depreciation 2,471      
Seniors Housing Operating | Mansfield, TX 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 21,515      
Carrying amount of land and land improvements 2,807      
Carrying amount of building and improvements 18,708      
Accumulated depreciation 2,255      
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 6,175      
Carrying amount of land and land improvements 1,312      
Carrying amount of building and improvements 18,288      
Accumulated depreciation 8,711      
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 8,562      
Initial cost of land and land improvements 2,875      
Initial cost of building and improvements 11,922      
Cost Capitalized Subsequent to Acquisition 3,196      
Carrying amount of land and land improvements 3,221      
Carrying amount of building and improvements 14,772      
Accumulated depreciation 3,082      
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 5,048      
Initial cost of land and land improvements 1,278      
Initial cost of building and improvements 12,113      
Cost Capitalized Subsequent to Acquisition 1,414      
Carrying amount of land and land improvements 1,372      
Carrying amount of building and improvements 13,433      
Accumulated depreciation 3,871      
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 3,116      
Carrying amount of land and land improvements 2,336      
Carrying amount of building and improvements 17,890      
Accumulated depreciation 6,305      
Seniors Housing Operating | Marlow, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 9,068      
Initial cost of building and improvements 39,720      
Cost Capitalized Subsequent to Acquisition 1,127      
Carrying amount of land and land improvements 9,060      
Carrying amount of building and improvements 40,855      
Accumulated depreciation 8,683      
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 5,475      
Carrying amount of land and land improvements 620      
Carrying amount of building and improvements 10,255      
Accumulated depreciation 4,203      
Seniors Housing Operating | Massillon, 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 1,117      
Initial cost of building and improvements 16,687      
Cost Capitalized Subsequent to Acquisition 1,103      
Carrying amount of land and land improvements 1,117      
Carrying amount of building and improvements 17,790      
Accumulated depreciation 1,912      
Seniors Housing Operating | Mattoon, IL 1        
SEC Schedule, 12-28, 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 1,905      
Cost Capitalized Subsequent to Acquisition 376      
Carrying amount of land and land improvements 835      
Carrying amount of building and improvements 2,237      
Accumulated depreciation 564      
Seniors Housing Operating | Mattoon, IL 2        
SEC Schedule, 12-28, 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 2,258      
Cost Capitalized Subsequent to Acquisition 490      
Carrying amount of land and land improvements 530      
Carrying amount of building and improvements 2,723      
Accumulated depreciation 520      
Seniors Housing Operating | Mckinney, TX 1        
SEC Schedule, 12-28, Real 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 1,279      
Carrying amount of land and land improvements 1,570      
Carrying amount of building and improvements 8,668      
Accumulated depreciation 3,083      
Seniors Housing Operating | Mckinney, TX 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,314      
Initial cost of building and improvements 23,777      
Cost Capitalized Subsequent to Acquisition 277      
Carrying amount of land and land improvements 4,314      
Carrying amount of building and improvements 24,054      
Accumulated depreciation 2,607      
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 5,769      
Initial cost of building and improvements 32,691      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 5,769      
Carrying amount of building and improvements 32,691      
Accumulated depreciation 406      
Seniors Housing Operating | McMasterville, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 3,176      
Initial cost of land and land improvements 5,555      
Initial cost of building and improvements 27,814      
Cost Capitalized Subsequent to Acquisition 6,810      
Carrying amount of land and land improvements 5,555      
Carrying amount of building and improvements 34,624      
Accumulated depreciation 1,550      
Seniors Housing Operating | Meadville, 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 2,084      
Initial cost of building and improvements 17,623      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,084      
Carrying amount of building and improvements 17,623      
Accumulated depreciation 660      
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 8,752      
Initial cost of land and land improvements 1,432      
Initial cost of building and improvements 14,141      
Cost Capitalized Subsequent to Acquisition 803      
Carrying amount of land and land improvements 1,514      
Carrying amount of building and improvements 14,862      
Accumulated depreciation 5,076      
Seniors Housing Operating | Medina, OH 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 12,156      
Initial cost of land and land improvements 1,309      
Initial cost of building and improvements 10,540      
Cost Capitalized Subsequent to Acquisition 2,463      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 12,562      
Accumulated depreciation 2,429      
Seniors Housing Operating | Medina, OH 2        
SEC Schedule, 12-28, 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 42,612      
Carrying amount of land and land improvements 2,131      
Carrying amount of building and improvements 40,481      
Accumulated depreciation 2,227      
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 45,945      
Carrying amount of land and land improvements 7,070      
Carrying amount of building and improvements 94,202      
Accumulated depreciation 35,526      
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 11,815      
Carrying amount of land and land improvements 4,453      
Carrying amount of building and improvements 84,925      
Accumulated depreciation 28,019      
Seniors Housing Operating | Memphis, TN 1        
SEC Schedule, 12-28, Real 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 4,224      
Carrying amount of land and land improvements 1,800      
Carrying amount of building and improvements 21,968      
Accumulated depreciation 9,230      
Seniors Housing Operating | Memphis, TN 2        
SEC Schedule, 12-28, Real 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 9,435      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,578      
Carrying amount of building and improvements 9,435      
Accumulated depreciation 1,517      
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 2,745      
Carrying amount of land and land improvements 1,020      
Carrying amount of building and improvements 9,729      
Accumulated depreciation 3,996      
Seniors Housing Operating | Mentor, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,225      
Initial cost of land and land improvements 957      
Initial cost of building and improvements 13,206      
Cost Capitalized Subsequent to Acquisition 1,109      
Carrying amount of land and land improvements 960      
Carrying amount of building and improvements 14,312      
Accumulated depreciation 1,627      
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 13,292      
Cost Capitalized Subsequent to Acquisition 2,145      
Carrying amount of land and land improvements 2,924      
Carrying amount of building and improvements 15,319      
Accumulated depreciation 2,043      
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 6,397      
Carrying amount of land and land improvements 950      
Carrying amount of building and improvements 15,484      
Accumulated depreciation 8,273      
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 2,857      
Carrying amount of land and land improvements 1,448      
Carrying amount of building and improvements 29,842      
Accumulated depreciation 9,552      
Seniors Housing Operating | Midland, 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 1,084      
Initial cost of building and improvements 5,623      
Cost Capitalized Subsequent to Acquisition 391      
Carrying amount of land and land improvements 1,091      
Carrying amount of building and improvements 6,007      
Accumulated depreciation 772      
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 5,540      
Carrying amount of land and land improvements 10,179      
Carrying amount of building and improvements 65,785      
Accumulated depreciation 27,251      
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 12,448      
Initial cost of building and improvements 12,390      
Cost Capitalized Subsequent to Acquisition 2,439      
Carrying amount of land and land improvements 12,947      
Carrying amount of building and improvements 14,330      
Accumulated depreciation 6,318      
Seniors Housing Operating | Millersburg, 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 1,293      
Initial cost of building and improvements 17,788      
Cost Capitalized Subsequent to Acquisition 775      
Carrying amount of land and land improvements 1,293      
Carrying amount of building and improvements 18,563      
Accumulated depreciation 1,771      
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 17,759      
Initial cost of land and land improvements 4,542      
Initial cost of building and improvements 25,321      
Cost Capitalized Subsequent to Acquisition 7,286      
Carrying amount of land and land improvements 4,801      
Carrying amount of building and improvements 32,348      
Accumulated depreciation 6,899      
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 20,262      
Cost Capitalized Subsequent to Acquisition 2,853      
Carrying amount of land and land improvements 2,415      
Carrying amount of building and improvements 23,091      
Accumulated depreciation 3,623      
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 1,988      
Carrying amount of land and land improvements 1,051      
Carrying amount of building and improvements 31,201      
Accumulated depreciation 10,150      
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 12,333      
Initial cost of land and land improvements 6,600      
Initial cost of building and improvements 52,118      
Cost Capitalized Subsequent to Acquisition 9,508      
Carrying amount of land and land improvements 6,602      
Carrying amount of building and improvements 61,624      
Accumulated depreciation 15,791      
Seniors Housing Operating | Mississauga, ON 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,052      
Initial cost of land and land improvements 1,602      
Initial cost of building and improvements 17,996      
Cost Capitalized Subsequent to Acquisition 1,812      
Carrying amount of land and land improvements 1,686      
Carrying amount of building and improvements 19,724      
Accumulated depreciation 6,751      
Seniors Housing Operating | Mississauga, ON 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,584      
Initial cost of land and land improvements 2,548      
Initial cost of building and improvements 15,158      
Cost Capitalized Subsequent to Acquisition 4,481      
Carrying amount of land and land improvements 2,673      
Carrying amount of building and improvements 19,514      
Accumulated depreciation 5,693      
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 2,186      
Carrying amount of land and land improvements 553      
Carrying amount of building and improvements 9,673      
Accumulated depreciation 4,247      
Seniors Housing Operating | Mobberley, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,146      
Initial cost of building and improvements 26,665      
Cost Capitalized Subsequent to Acquisition 2,459      
Carrying amount of land and land improvements 5,315      
Carrying amount of building and improvements 28,955      
Accumulated depreciation 11,011      
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 10,205      
Cost Capitalized Subsequent to Acquisition 633      
Carrying amount of land and land improvements 749      
Carrying amount of building and improvements 10,826      
Accumulated depreciation 1,975      
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 1,190      
Carrying amount of land and land improvements 1,210      
Carrying amount of building and improvements 5,093      
Accumulated depreciation 1,206      
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 3,982      
Carrying amount of land and land improvements 6,443      
Carrying amount of building and improvements 33,080      
Accumulated depreciation 11,695      
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 10,923      
Cost Capitalized Subsequent to Acquisition 375      
Carrying amount of land and land improvements 538      
Carrying amount of building and improvements 11,284      
Accumulated depreciation 2,077      
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 18,570      
Carrying amount of land and land improvements 6,804      
Carrying amount of building and improvements 101,890      
Accumulated depreciation 25,776      
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 8,536      
Carrying amount of land and land improvements 4,291      
Carrying amount of building and improvements 26,021      
Accumulated depreciation 14,107      
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 8,995      
Initial cost of land and land improvements 4,407      
Initial cost of building and improvements 23,719      
Cost Capitalized Subsequent to Acquisition 9,764      
Carrying amount of land and land improvements 4,566      
Carrying amount of building and improvements 33,324      
Accumulated depreciation 8,502      
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 9,320      
Carrying amount of land and land improvements 2,095      
Carrying amount of building and improvements 60,913      
Accumulated depreciation 19,011      
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 1,052      
Initial cost of land and land improvements 582      
Initial cost of building and improvements 12,973      
Cost Capitalized Subsequent to Acquisition 1,938      
Carrying amount of land and land improvements 612      
Carrying amount of building and improvements 14,881      
Accumulated depreciation 4,806      
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 519      
Carrying amount of land and land improvements 1,950      
Carrying amount of building and improvements 19,701      
Accumulated depreciation 4,231      
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 1,067      
Carrying amount of land and land improvements 390      
Carrying amount of building and improvements 6,821      
Accumulated depreciation 2,752      
Seniors Housing Operating | Naperville, IL 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,470      
Initial cost of building and improvements 29,547      
Cost Capitalized Subsequent to Acquisition 6,818      
Carrying amount of land and land improvements 3,470      
Carrying amount of building and improvements 36,365      
Accumulated depreciation 10,588      
Seniors Housing Operating | Naperville, IL 2        
SEC Schedule, 12-28, Real 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 2,813      
Carrying amount of land and land improvements 1,550      
Carrying amount of building and improvements 15,050      
Accumulated depreciation 5,513      
Seniors Housing Operating | Naperville, IL 3        
SEC Schedule, 12-28, Real 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 2,084      
Carrying amount of land and land improvements 1,602      
Carrying amount of building and improvements 30,226      
Accumulated depreciation 10,531      
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 5,862      
Carrying amount of land and land improvements 3,900      
Carrying amount of building and improvements 41,650      
Accumulated depreciation 16,660      
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 10,739      
Carrying amount of land and land improvements 2,729      
Carrying amount of building and improvements 29,010      
Accumulated depreciation 8,819      
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 22,010      
Cost Capitalized Subsequent to Acquisition 609      
Carrying amount of land and land improvements 2,290      
Carrying amount of building and improvements 22,588      
Accumulated depreciation 3,275      
Seniors Housing Operating | New Rochelle, 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 5,732      
Initial cost of building and improvements 34,270      
Cost Capitalized Subsequent to Acquisition 32      
Carrying amount of land and land improvements 5,732      
Carrying amount of building and improvements 34,302      
Accumulated depreciation 629      
Seniors Housing Operating | New York, 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 0      
Initial cost of building and improvements 29      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 29      
Accumulated depreciation 0      
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 15,260      
Cost Capitalized Subsequent to Acquisition 2,349      
Carrying amount of land and land improvements 2,809      
Carrying amount of building and improvements 17,606      
Accumulated depreciation 1,763      
Seniors Housing Operating | Newbury, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,850      
Initial cost of building and improvements 12,796      
Cost Capitalized Subsequent to Acquisition 1,239      
Carrying amount of land and land improvements 2,944      
Carrying amount of building and improvements 13,941      
Accumulated depreciation 2,811      
Seniors Housing Operating | Newmarket, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,071      
Initial cost of building and improvements 11,902      
Cost Capitalized Subsequent to Acquisition 2,598      
Carrying amount of land and land improvements 4,205      
Carrying amount of building and improvements 14,366      
Accumulated depreciation 4,163      
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 2,006      
Carrying amount of land and land improvements 1,975      
Carrying amount of building and improvements 16,381      
Accumulated depreciation 6,782      
Seniors Housing Operating | Norman, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,480      
Initial cost of building and improvements 33,330      
Cost Capitalized Subsequent to Acquisition 1,409      
Carrying amount of land and land improvements 1,480      
Carrying amount of building and improvements 34,739      
Accumulated depreciation 10,103      
Seniors Housing Operating | North Canton, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,726      
Initial cost of building and improvements 24,588      
Cost Capitalized Subsequent to Acquisition 2,224      
Carrying amount of land and land improvements 1,726      
Carrying amount of building and improvements 26,812      
Accumulated depreciation 2,917      
Seniors Housing Operating | North Ridgeville, 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 1,780      
Initial cost of building and improvements 29,390      
Cost Capitalized Subsequent to Acquisition 157      
Carrying amount of land and land improvements 1,790      
Carrying amount of building and improvements 29,537      
Accumulated depreciation 1,688      
Seniors Housing Operating | North Tonawanda, NY 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,180      
Initial cost of land and land improvements 1,249      
Initial cost of building and improvements 7,360      
Cost Capitalized Subsequent to Acquisition 995      
Carrying amount of land and land improvements 1,573      
Carrying amount of building and improvements 8,031      
Accumulated depreciation 1,812      
Seniors Housing Operating | North Tonawanda, NY 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,426      
Initial cost of building and improvements 17,572      
Cost Capitalized Subsequent to Acquisition 930      
Carrying amount of land and land improvements 1,528      
Carrying amount of building and improvements 18,400      
Accumulated depreciation 1,505      
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 1,881      
Carrying amount of land and land improvements 3,044      
Carrying amount of building and improvements 19,776      
Accumulated depreciation 6,320      
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 18,356      
Cost Capitalized Subsequent to Acquisition 1,059      
Carrying amount of land and land improvements 1,971      
Carrying amount of building and improvements 19,412      
Accumulated depreciation 3,002      
Seniors Housing Operating | Northville, 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 2,221      
Initial cost of building and improvements 12,710      
Cost Capitalized Subsequent to Acquisition 1,961      
Carrying amount of land and land improvements 2,221      
Carrying amount of building and improvements 14,671      
Accumulated depreciation 210      
Seniors Housing Operating | Novi, 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 3,877      
Initial cost of building and improvements 30,891      
Cost Capitalized Subsequent to Acquisition 6,155      
Carrying amount of land and land improvements 3,877      
Carrying amount of building and improvements 37,046      
Accumulated depreciation 432      
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 963      
Carrying amount of land and land improvements 739      
Carrying amount of building and improvements 8,661      
Accumulated depreciation 1,837      
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 4,272      
Carrying amount of land and land improvements 1,250      
Carrying amount of building and improvements 44,655      
Accumulated depreciation 16,251      
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 13,745      
Initial cost of land and land improvements 1,917      
Initial cost of building and improvements 11,954      
Cost Capitalized Subsequent to Acquisition 971      
Carrying amount of land and land improvements 1,934      
Carrying amount of building and improvements 12,908      
Accumulated depreciation 2,865      
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 4,764      
Carrying amount of land and land improvements 4,117      
Carrying amount of building and improvements 52,032      
Accumulated depreciation 18,233      
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 4,286      
Carrying amount of land and land improvements 2,393      
Carrying amount of building and improvements 41,719      
Accumulated depreciation 14,470      
Seniors Housing Operating | Oakville, ON 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,117      
Initial cost of land and land improvements 2,134      
Initial cost of building and improvements 29,963      
Cost Capitalized Subsequent to Acquisition 3,953      
Carrying amount of land and land improvements 2,258      
Carrying amount of building and improvements 33,792      
Accumulated depreciation 11,529      
Seniors Housing Operating | Oakville, ON 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 3,743      
Initial cost of land and land improvements 1,271      
Initial cost of building and improvements 13,754      
Cost Capitalized Subsequent to Acquisition 2,304      
Carrying amount of land and land improvements 1,343      
Carrying amount of building and improvements 15,986      
Accumulated depreciation 4,962      
Seniors Housing Operating | Ocala, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,340      
Initial cost of building and improvements 10,564      
Cost Capitalized Subsequent to Acquisition 694      
Carrying amount of land and land improvements 1,340      
Carrying amount of building and improvements 11,258      
Accumulated depreciation 4,266      
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 3,506      
Cost Capitalized Subsequent to Acquisition 422      
Carrying amount of land and land improvements 384      
Carrying amount of building and improvements 3,890      
Accumulated depreciation 524      
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 2,114      
Carrying amount of land and land improvements 360      
Carrying amount of building and improvements 8,814      
Accumulated depreciation 4,043      
Seniors Housing Operating | Oklahoma City, OK 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 590      
Initial cost of building and improvements 7,513      
Cost Capitalized Subsequent to Acquisition 335      
Carrying amount of land and land improvements 590      
Carrying amount of building and improvements 7,848      
Accumulated depreciation 3,292      
Seniors Housing Operating | Oklahoma City, OK 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 760      
Initial cost of building and improvements 7,017      
Cost Capitalized Subsequent to Acquisition 461      
Carrying amount of land and land improvements 760      
Carrying amount of building and improvements 7,478      
Accumulated depreciation 3,027      
Seniors Housing Operating | Oklahoma City, OK 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 18,268      
Carrying amount of land and land improvements 1,590      
Carrying amount of building and improvements 16,678      
Accumulated depreciation 2,216      
Seniors Housing Operating | Oklahoma City, OK 4        
SEC Schedule, 12-28, 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 27,717      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 5,962      
Carrying amount of building and improvements 27,717      
Accumulated depreciation 32,208      
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 18,482      
Initial cost of land and land improvements 714      
Initial cost of building and improvements 20,943      
Cost Capitalized Subsequent to Acquisition 1,702      
Carrying amount of land and land improvements 771      
Carrying amount of building and improvements 22,588      
Accumulated depreciation 6,400      
Seniors Housing Operating | Olney, IL 1        
SEC Schedule, 12-28, 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 4,805      
Cost Capitalized Subsequent to Acquisition 435      
Carrying amount of land and land improvements 923      
Carrying amount of building and improvements 5,214      
Accumulated depreciation 932      
Seniors Housing Operating | Olney, IL 2        
SEC Schedule, 12-28, 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 2,234      
Cost Capitalized Subsequent to Acquisition 511      
Carrying amount of land and land improvements 563      
Carrying amount of building and improvements 2,716      
Accumulated depreciation 590      
Seniors Housing Operating | Omaha, NE 1        
SEC Schedule, 12-28, 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 362      
Carrying amount of land and land improvements 370      
Carrying amount of building and improvements 10,592      
Accumulated depreciation 3,779      
Seniors Housing Operating | Omaha, NE 2        
SEC Schedule, 12-28, 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 493      
Carrying amount of land and land improvements 380      
Carrying amount of building and improvements 9,262      
Accumulated depreciation 3,444      
Seniors Housing Operating | Omaha, NE 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,809      
Initial cost of land and land improvements 1,623      
Initial cost of building and improvements 12,027      
Cost Capitalized Subsequent to Acquisition 780      
Carrying amount of land and land improvements 1,623      
Carrying amount of building and improvements 12,807      
Accumulated depreciation 1,226      
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 33,935      
Initial cost of land and land improvements 8,021      
Initial cost of building and improvements 64,689      
Cost Capitalized Subsequent to Acquisition 2,778      
Carrying amount of land and land improvements 8,021      
Carrying amount of building and improvements 67,467      
Accumulated depreciation 11,040      
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 8,775      
Cost Capitalized Subsequent to Acquisition 451      
Carrying amount of land and land improvements 1,419      
Carrying amount of building and improvements 9,202      
Accumulated depreciation 1,662      
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 16,941      
Cost Capitalized Subsequent to Acquisition 460      
Carrying amount of land and land improvements 3,441      
Carrying amount of building and improvements 17,388      
Accumulated depreciation 3,103      
Seniors Housing Operating | Ottawa, ON 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,901      
Initial cost of land and land improvements 1,341      
Initial cost of building and improvements 15,425      
Cost Capitalized Subsequent to Acquisition 4,468      
Carrying amount of land and land improvements 1,438      
Carrying amount of building and improvements 19,796      
Accumulated depreciation 4,388      
Seniors Housing Operating | Ottawa, ON 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,264      
Initial cost of land and land improvements 2,809      
Initial cost of building and improvements 27,299      
Cost Capitalized Subsequent to Acquisition 4,608      
Carrying amount of land and land improvements 2,935      
Carrying amount of building and improvements 31,781      
Accumulated depreciation 11,604      
Seniors Housing Operating | Ottawa, ON 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 3,767      
Initial cost of land and land improvements 1,156      
Initial cost of building and improvements 9,758      
Cost Capitalized Subsequent to Acquisition 1,124      
Carrying amount of land and land improvements 1,245      
Carrying amount of building and improvements 10,793      
Accumulated depreciation 3,691      
Seniors Housing Operating | Ottawa, ON 4        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,920      
Initial cost of land and land improvements 746      
Initial cost of building and improvements 7,800      
Cost Capitalized Subsequent to Acquisition 1,425      
Carrying amount of land and land improvements 822      
Carrying amount of building and improvements 9,149      
Accumulated depreciation 3,019      
Seniors Housing Operating | Ottawa, ON 5        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,176      
Initial cost of building and improvements 12,764      
Cost Capitalized Subsequent to Acquisition 1,355      
Carrying amount of land and land improvements 1,271      
Carrying amount of building and improvements 14,024      
Accumulated depreciation 3,012      
Seniors Housing Operating | Ottawa, ON 6        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 17,386      
Initial cost of land and land improvements 4,256      
Initial cost of building and improvements 39,141      
Cost Capitalized Subsequent to Acquisition 2,624      
Carrying amount of land and land improvements 4,406      
Carrying amount of building and improvements 41,615      
Accumulated depreciation 10,838      
Seniors Housing Operating | Ottawa, ON 7        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 6,088      
Initial cost of land and land improvements 2,252      
Initial cost of building and improvements 7,575      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,252      
Carrying amount of building and improvements 7,575      
Accumulated depreciation 3,514      
Seniors Housing Operating | Ottawa, ON 8        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,602      
Initial cost of land and land improvements 2,963      
Initial cost of building and improvements 26,424      
Cost Capitalized Subsequent to Acquisition 3,758      
Carrying amount of land and land improvements 3,172      
Carrying amount of building and improvements 29,973      
Accumulated depreciation 7,059      
Seniors Housing Operating | Ottawa, ON 9        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,748      
Initial cost of land and land improvements 1,561      
Initial cost of building and improvements 18,170      
Cost Capitalized Subsequent to Acquisition 3,773      
Carrying amount of land and land improvements 1,765      
Carrying amount of building and improvements 21,739      
Accumulated depreciation 5,167      
Seniors Housing Operating | Ottawa, ON 10        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,131      
Initial cost of land and land improvements 3,403      
Initial cost of building and improvements 31,090      
Cost Capitalized Subsequent to Acquisition 4,115      
Carrying amount of land and land improvements 3,647      
Carrying amount of building and improvements 34,961      
Accumulated depreciation 7,602      
Seniors Housing Operating | Ottawa, ON 11        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,411      
Initial cost of building and improvements 28,335      
Cost Capitalized Subsequent to Acquisition 6,754      
Carrying amount of land and land improvements 3,649      
Carrying amount of building and improvements 34,851      
Accumulated depreciation 9,107      
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 15,011      
Initial cost of land and land improvements 6,746      
Initial cost of building and improvements 45,981      
Cost Capitalized Subsequent to Acquisition 13,819      
Carrying amount of land and land improvements 6,971      
Carrying amount of building and improvements 59,575      
Accumulated depreciation 15,071      
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 4,637      
Carrying amount of land and land improvements 1,670      
Carrying amount of building and improvements 20,776      
Accumulated depreciation 7,075      
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 31,147      
Cost Capitalized Subsequent to Acquisition 357      
Carrying amount of land and land improvements 3,346      
Carrying amount of building and improvements 31,508      
Accumulated depreciation 5,102      
Seniors Housing Operating | Painesville, 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 1,407      
Initial cost of building and improvements 12,500      
Cost Capitalized Subsequent to Acquisition 158      
Carrying amount of land and land improvements 1,407      
Carrying amount of building and improvements 12,658      
Accumulated depreciation 678      
Seniors Housing Operating | Painted Post, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,812      
Initial cost of land and land improvements 1,326      
Initial cost of building and improvements 13,400      
Cost Capitalized Subsequent to Acquisition 690      
Carrying amount of land and land improvements 1,259      
Carrying amount of building and improvements 14,157      
Accumulated depreciation 1,355      
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 3,363      
Carrying amount of land and land improvements 180      
Carrying amount of building and improvements 7,683      
Accumulated depreciation 2,696      
Seniors Housing Operating | Palm Coast, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 870      
Initial cost of building and improvements 10,957      
Cost Capitalized Subsequent to Acquisition 690      
Carrying amount of land and land improvements 870      
Carrying amount of building and improvements 11,647      
Accumulated depreciation 4,290      
Seniors Housing Operating | Palm Desert, CA 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 13,628      
Initial cost of building and improvements 58,446      
Cost Capitalized Subsequent to Acquisition 3,052      
Carrying amount of land and land improvements 13,683      
Carrying amount of building and improvements 61,443      
Accumulated depreciation 11,396      
Seniors Housing Operating | Palm Desert, CA 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,193      
Initial cost of building and improvements 83,052      
Cost Capitalized Subsequent to Acquisition 2,297      
Carrying amount of land and land improvements 6,193      
Carrying amount of building and improvements 85,349      
Accumulated depreciation 5,432      
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 3,881      
Carrying amount of land and land improvements 43      
Carrying amount of building and improvements 43,477      
Accumulated depreciation 15,111      
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 2,377      
Carrying amount of land and land improvements 2,986      
Carrying amount of building and improvements 37,959      
Accumulated depreciation 12,860      
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 6,203      
Cost Capitalized Subsequent to Acquisition 562      
Carrying amount of land and land improvements 719      
Carrying amount of building and improvements 6,734      
Accumulated depreciation 899      
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 1,186      
Carrying amount of land and land improvements 490      
Carrying amount of building and improvements 6,638      
Accumulated depreciation 5,597      
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 11,115      
Initial cost of land and land improvements 1,533      
Initial cost of building and improvements 9,221      
Cost Capitalized Subsequent to Acquisition 785      
Carrying amount of land and land improvements 1,536      
Carrying amount of building and improvements 10,003      
Accumulated depreciation 2,235      
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 7,252      
Carrying amount of land and land improvements 1,770      
Carrying amount of building and improvements 15,882      
Accumulated depreciation 6,857      
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 0      
Initial cost of land and land improvements 2,250      
Initial cost of building and improvements 16,071      
Cost Capitalized Subsequent to Acquisition 1,459      
Carrying amount of land and land improvements 2,380      
Carrying amount of building and improvements 17,400      
Accumulated depreciation 5,320      
Seniors Housing Operating | Peasmarsh, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 67,110      
Carrying amount of land and land improvements 5,533      
Carrying amount of building and improvements 61,577      
Accumulated depreciation 19,939      
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 538      
Carrying amount of land and land improvements 938      
Carrying amount of building and improvements 7,186      
Accumulated depreciation 2,207      
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 1,921      
Carrying amount of land and land improvements 1,963      
Carrying amount of building and improvements 11,316      
Accumulated depreciation 3,908      
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 4,879      
Carrying amount of land and land improvements 1,542      
Carrying amount of building and improvements 32,337      
Accumulated depreciation 9,961      
Seniors Housing Operating | Pensacola, 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 2,945      
Initial cost of building and improvements 29,148      
Cost Capitalized Subsequent to Acquisition 2,798      
Carrying amount of land and land improvements 2,945      
Carrying amount of building and improvements 31,946      
Accumulated depreciation 251      
Seniors Housing Operating | Penticton, 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 3,706      
Initial cost of building and improvements 46,717      
Cost Capitalized Subsequent to Acquisition 4,962      
Carrying amount of land and land improvements 3,799      
Carrying amount of building and improvements 51,586      
Accumulated depreciation 5,915      
Seniors Housing Operating | Peoria, AZ 1        
SEC Schedule, 12-28, 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 2,676      
Carrying amount of land and land improvements 766      
Carrying amount of building and improvements 24,472      
Accumulated depreciation 5,496      
Seniors Housing Operating | Peoria, AZ 2        
SEC Schedule, 12-28, 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 12,091      
Cost Capitalized Subsequent to Acquisition 976      
Carrying amount of land and land improvements 2,023      
Carrying amount of building and improvements 13,050      
Accumulated depreciation 2,337      
Seniors Housing Operating | Pflugerville, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 40,987      
Carrying amount of land and land improvements 5,978      
Carrying amount of building and improvements 35,009      
Accumulated depreciation 258      
Seniors Housing Operating | Pickerington, 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 2,815      
Initial cost of building and improvements 26,921      
Cost Capitalized Subsequent to Acquisition 695      
Carrying amount of land and land improvements 2,864      
Carrying amount of building and improvements 27,567      
Accumulated depreciation 1,956      
Seniors Housing Operating | Pittsburgh, PA 1        
SEC Schedule, 12-28, Real 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 11,928      
Carrying amount of land and land improvements 1,635      
Carrying amount of building and improvements 29,890      
Accumulated depreciation 8,167      
Seniors Housing Operating | Pittsburgh, PA 2        
SEC Schedule, 12-28, 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 22,019      
Cost Capitalized Subsequent to Acquisition 2,689      
Carrying amount of land and land improvements 2,850      
Carrying amount of building and improvements 24,708      
Accumulated depreciation 292      
Seniors Housing Operating | Pittsburgh, PA 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,815      
Initial cost of building and improvements 33,052      
Cost Capitalized Subsequent to Acquisition 3,764      
Carrying amount of land and land improvements 3,815      
Carrying amount of building and improvements 36,816      
Accumulated depreciation 359      
Seniors Housing Operating | Pittston, 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 1,644      
Initial cost of building and improvements 13,756      
Cost Capitalized Subsequent to Acquisition 863      
Carrying amount of land and land improvements 1,644      
Carrying amount of building and improvements 14,619      
Accumulated depreciation 1,538      
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 6,977      
Carrying amount of land and land improvements 8,528      
Carrying amount of building and improvements 24,005      
Accumulated depreciation 8,442      
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 2,236      
Carrying amount of land and land improvements 3,197      
Carrying amount of building and improvements 22,006      
Accumulated depreciation 7,238      
Seniors Housing Operating | Plano, TX 1        
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 7,395      
Carrying amount of land and land improvements 3,294      
Carrying amount of building and improvements 67,171      
Accumulated depreciation 25,545      
Seniors Housing Operating | Plano, TX 2        
SEC Schedule, 12-28, Real 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 2,259      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 17,649      
Accumulated depreciation 4,325      
Seniors Housing Operating | Plano, TX 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,079      
Initial cost of building and improvements 32,970      
Cost Capitalized Subsequent to Acquisition 3,978      
Carrying amount of land and land improvements 3,079      
Carrying amount of building and improvements 36,948      
Accumulated depreciation 1,120      
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 261      
Carrying amount of land and land improvements 250      
Carrying amount of building and improvements 5,911      
Accumulated depreciation 2,192      
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 4,935      
Carrying amount of land and land improvements 1,707      
Carrying amount of building and improvements 45,339      
Accumulated depreciation 15,466      
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 52,474      
Carrying amount of land and land improvements 3,676      
Carrying amount of building and improvements 48,798      
Accumulated depreciation 6,667      
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 9,777      
Initial cost of land and land improvements 3,685      
Initial cost of building and improvements 26,788      
Cost Capitalized Subsequent to Acquisition 3,861      
Carrying amount of land and land improvements 3,879      
Carrying amount of building and improvements 30,455      
Accumulated depreciation 6,983      
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 21,945      
Carrying amount of land and land improvements 8,700      
Carrying amount of building and improvements 69,175      
Accumulated depreciation 26,278      
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 40,055      
Initial cost of land and land improvements 2,880      
Initial cost of building and improvements 59,764      
Cost Capitalized Subsequent to Acquisition 3,038      
Carrying amount of land and land improvements 2,892      
Carrying amount of building and improvements 62,790      
Accumulated depreciation 11,500      
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 15,190      
Cost Capitalized Subsequent to Acquisition 1,664      
Carrying amount of land and land improvements 1,866      
Carrying amount of building and improvements 16,727      
Accumulated depreciation 2,399      
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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 58,278      
Carrying amount of land and land improvements 6,648      
Carrying amount of building and improvements 51,630      
Accumulated depreciation 6,034      
Seniors Housing Operating | Princeton, NJ 1        
SEC Schedule, 12-28, Real 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 7,792      
Carrying amount of land and land improvements 1,845      
Carrying amount of building and improvements 38,565      
Accumulated depreciation 11,536      
Seniors Housing Operating | Princeton, NJ 2        
SEC Schedule, 12-28, 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 (151)      
Cost Capitalized Subsequent to Acquisition 31,468      
Carrying amount of land and land improvements 3,719      
Carrying amount of building and improvements 27,598      
Accumulated depreciation 1,234      
Seniors Housing Operating | Purley, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,365      
Initial cost of building and improvements 35,161      
Cost Capitalized Subsequent to Acquisition 4,650      
Carrying amount of land and land improvements 7,590      
Carrying amount of building and improvements 39,586      
Accumulated depreciation 14,766      
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 7,313      
Carrying amount of land and land improvements 1,156      
Carrying amount of building and improvements 28,083      
Accumulated depreciation 10,223      
Seniors Housing Operating | Quebec City, QC 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,426      
Initial cost of land and land improvements 2,420      
Initial cost of building and improvements 21,977      
Cost Capitalized Subsequent to Acquisition 5,197      
Carrying amount of land and land improvements 2,500      
Carrying amount of building and improvements 27,094      
Accumulated depreciation 5,809      
Seniors Housing Operating | Quebec City, QC 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 10,350      
Initial cost of land and land improvements 3,300      
Initial cost of building and improvements 28,325      
Cost Capitalized Subsequent to Acquisition 6,398      
Carrying amount of land and land improvements 3,409      
Carrying amount of building and improvements 34,614      
Accumulated depreciation 7,600      
Seniors Housing Operating | Quebec City, QC 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,835      
Initial cost of land and land improvements 8,251      
Initial cost of building and improvements 53,286      
Cost Capitalized Subsequent to Acquisition 10,426      
Carrying amount of land and land improvements 8,251      
Carrying amount of building and improvements 63,712      
Accumulated depreciation 3,485      
Seniors Housing Operating | Quebec City, QC 4        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 2,391      
Initial cost of land and land improvements 4,314      
Initial cost of building and improvements 29,822      
Cost Capitalized Subsequent to Acquisition 3,465      
Carrying amount of land and land improvements 4,314      
Carrying amount of building and improvements 33,287      
Accumulated depreciation 3,669      
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 4,345      
Carrying amount of land and land improvements 1,273      
Carrying amount of building and improvements 26,076      
Accumulated depreciation 6,673      
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 16,254      
Cost Capitalized Subsequent to Acquisition 625      
Carrying amount of land and land improvements 2,332      
Carrying amount of building and improvements 16,875      
Accumulated depreciation 2,396      
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 2,674      
Carrying amount of land and land improvements 2,084      
Carrying amount of building and improvements 12,125      
Accumulated depreciation 5,203      
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 9,893      
Carrying amount of land and land improvements 5,450      
Carrying amount of building and improvements 69,927      
Accumulated depreciation 23,699      
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 3,454      
Carrying amount of land and land improvements 1,760      
Carrying amount of building and improvements 50,168      
Accumulated depreciation 16,519      
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 4,576      
Cost Capitalized Subsequent to Acquisition 439      
Carrying amount of land and land improvements 584      
Carrying amount of building and improvements 5,010      
Accumulated depreciation 770      
Seniors Housing Operating | Red Deer, AB 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,247      
Initial cost of building and improvements 19,283      
Cost Capitalized Subsequent to Acquisition 2,687      
Carrying amount of land and land improvements 1,318      
Carrying amount of building and improvements 21,899      
Accumulated depreciation 5,737      
Seniors Housing Operating | Red Deer, AB 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,199      
Initial cost of building and improvements 22,339      
Cost Capitalized Subsequent to Acquisition 3,509      
Carrying amount of land and land improvements 1,247      
Carrying amount of building and improvements 25,800      
Accumulated depreciation 7,109      
Seniors Housing Operating | Redding, CA 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 24,995      
Initial cost of land and land improvements 4,474      
Initial cost of building and improvements 36,557      
Cost Capitalized Subsequent to Acquisition 2,028      
Carrying amount of land and land improvements 4,474      
Carrying amount of building and improvements 38,585      
Accumulated depreciation 7,108      
Seniors Housing Operating | Redding, CA 2        
SEC Schedule, 12-28, 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 10,290      
Cost Capitalized Subsequent to Acquisition 537      
Carrying amount of land and land improvements 2,675      
Carrying amount of building and improvements 10,791      
Accumulated depreciation 1,971      
Seniors Housing Operating | Redlands, 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 40,425      
Cost Capitalized Subsequent to Acquisition 1,176      
Carrying amount of land and land improvements 1,977      
Carrying amount of building and improvements 41,590      
Accumulated depreciation 5,545      
Seniors Housing Operating | Redwood 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 61,421      
Carrying amount of land and land improvements 457      
Carrying amount of building and improvements 60,964      
Accumulated depreciation 2,027      
Seniors Housing Operating | Regina, SK 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,722      
Initial cost of land and land improvements 1,485      
Initial cost of building and improvements 21,148      
Cost Capitalized Subsequent to Acquisition 2,407      
Carrying amount of land and land improvements 1,666      
Carrying amount of building and improvements 23,374      
Accumulated depreciation 8,266      
Seniors Housing Operating | Regina, SK 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,770      
Initial cost of land and land improvements 1,244      
Initial cost of building and improvements 21,036      
Cost Capitalized Subsequent to Acquisition 2,287      
Carrying amount of land and land improvements 1,343      
Carrying amount of building and improvements 23,224      
Accumulated depreciation 7,640      
Seniors Housing Operating | Regina, SK 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 13,186      
Initial cost of land and land improvements 1,539      
Initial cost of building and improvements 24,053      
Cost Capitalized Subsequent to Acquisition 4,775      
Carrying amount of land and land improvements 1,644      
Carrying amount of building and improvements 28,723      
Accumulated depreciation 6,784      
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 9,715      
Carrying amount of land and land improvements 993      
Carrying amount of building and improvements 33,930      
Accumulated depreciation 10,800      
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 4,104      
Carrying amount of land and land improvements 1,060      
Carrying amount of building and improvements 15,544      
Accumulated depreciation 6,954      
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 23,697      
Cost Capitalized Subsequent to Acquisition 207      
Carrying amount of land and land improvements 6,528      
Carrying amount of building and improvements 23,877      
Accumulated depreciation 3,919      
Seniors Housing Operating | Ridgeland, MS 1        
SEC Schedule, 12-28, 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 4,300      
Carrying amount of land and land improvements 520      
Carrying amount of building and improvements 11,975      
Accumulated depreciation 5,354      
Seniors Housing Operating | Ridgeland, MS 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,659      
Initial cost of building and improvements 27,435      
Cost Capitalized Subsequent to Acquisition 1,973      
Carrying amount of land and land improvements 2,659      
Carrying amount of building and improvements 29,408      
Accumulated depreciation 213      
Seniors Housing Operating | Rimouski, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 6,323      
Initial cost of land and land improvements 2,820      
Initial cost of building and improvements 30,658      
Cost Capitalized Subsequent to Acquisition 8,000      
Carrying amount of land and land improvements 2,820      
Carrying amount of building and improvements 38,658      
Accumulated depreciation 920      
Seniors Housing Operating | Riviere-du-Loup, QC 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 2,085      
Initial cost of land and land improvements 592      
Initial cost of building and improvements 7,601      
Cost Capitalized Subsequent to Acquisition 1,678      
Carrying amount of land and land improvements 681      
Carrying amount of building and improvements 9,190      
Accumulated depreciation 2,763      
Seniors Housing Operating | Riviere-du-Loup, QC 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 10,486      
Initial cost of land and land improvements 1,454      
Initial cost of building and improvements 16,848      
Cost Capitalized Subsequent to Acquisition 6,057      
Carrying amount of land and land improvements 1,797      
Carrying amount of building and improvements 22,562      
Accumulated depreciation 7,164      
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 3,667      
Cost Capitalized Subsequent to Acquisition 415      
Carrying amount of land and land improvements 663      
Carrying amount of building and improvements 4,079      
Accumulated depreciation 770      
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 5,119      
Cost Capitalized Subsequent to Acquisition 652      
Carrying amount of land and land improvements 1,024      
Carrying amount of building and improvements 5,753      
Accumulated depreciation 984      
Seniors Housing Operating | Rockwall, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,220      
Initial cost of building and improvements 17,650      
Cost Capitalized Subsequent to Acquisition 1,050      
Carrying amount of land and land improvements 2,220      
Carrying amount of building and improvements 18,700      
Accumulated depreciation 4,047      
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 6,299      
Carrying amount of land and land improvements 45      
Carrying amount of building and improvements 14,054      
Accumulated depreciation 5,216      
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 6,405      
Carrying amount of land and land improvements 6,546      
Carrying amount of building and improvements 25,059      
Accumulated depreciation 11,749      
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 63,433      
Carrying amount of land and land improvements 6,139      
Carrying amount of building and improvements 70,794      
Accumulated depreciation 24,739      
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 14,453      
Cost Capitalized Subsequent to Acquisition 324      
Carrying amount of land and land improvements 980      
Carrying amount of building and improvements 14,776      
Accumulated depreciation 2,705      
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 2,218      
Carrying amount of land and land improvements 1,648      
Carrying amount of building and improvements 37,987      
Accumulated depreciation 12,107      
Seniors Housing Operating | Roseville, CA 1        
SEC Schedule, 12-28, 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 7,781      
Carrying amount of land and land improvements 3,300      
Carrying amount of building and improvements 49,433      
Accumulated depreciation 14,162      
Seniors Housing Operating | Roseville, CA 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,011      
Initial cost of building and improvements 55,669      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,011      
Carrying amount of building and improvements 55,669      
Accumulated depreciation 3,104      
Seniors Housing Operating | Roswell, GA 1        
SEC Schedule, 12-28, Real 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 5,402      
Carrying amount of land and land improvements 1,114      
Carrying amount of building and improvements 15,022      
Accumulated depreciation 10,322      
Seniors Housing Operating | Roswell, GA 2        
SEC Schedule, 12-28, 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 4,504      
Carrying amount of land and land improvements 2,380      
Carrying amount of building and improvements 10,690      
Accumulated depreciation 4,168      
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 15,477      
Cost Capitalized Subsequent to Acquisition 111      
Carrying amount of land and land improvements 2,358      
Carrying amount of building and improvements 15,588      
Accumulated depreciation 1,978      
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 280      
Carrying amount of land and land improvements 1,629      
Carrying amount of building and improvements 21,582      
Accumulated depreciation 2,185      
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 47,177      
Carrying amount of land and land improvements 3,726      
Carrying amount of building and improvements 43,451      
Accumulated depreciation 5,751      
Seniors Housing Operating | Sachse, 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 6,346      
Initial cost of building and improvements 30,025      
Cost Capitalized Subsequent to Acquisition 905      
Carrying amount of land and land improvements 6,225      
Carrying amount of building and improvements 31,051      
Accumulated depreciation 1,007      
Seniors Housing Operating | Sacramento, CA 1        
SEC Schedule, 12-28, 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 7,499      
Carrying amount of land and land improvements 952      
Carrying amount of building and improvements 22,268      
Accumulated depreciation 7,395      
Seniors Housing Operating | Sacramento, CA 2        
SEC Schedule, 12-28, Real 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 2,485      
Carrying amount of land and land improvements 1,369      
Carrying amount of building and improvements 25,810      
Accumulated depreciation 8,641      
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 17,915      
Cost Capitalized Subsequent to Acquisition 1,005      
Carrying amount of land and land improvements 1,535      
Carrying amount of building and improvements 18,868      
Accumulated depreciation 3,164      
Seniors Housing Operating | Sainte Marie, QC        
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 3,960      
Initial cost of building and improvements 26,336      
Cost Capitalized Subsequent to Acquisition 6,418      
Carrying amount of land and land improvements 3,960      
Carrying amount of building and improvements 32,754      
Accumulated depreciation 2,098      
Seniors Housing Operating | Saint-Georges, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 6,901      
Initial cost of land and land improvements 3,105      
Initial cost of building and improvements 20,518      
Cost Capitalized Subsequent to Acquisition 6,516      
Carrying amount of land and land improvements 3,105      
Carrying amount of building and improvements 27,034      
Accumulated depreciation 556      
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 28,857      
Initial cost of land and land improvements 10,259      
Initial cost of building and improvements 61,903      
Cost Capitalized Subsequent to Acquisition 11,782      
Carrying amount of land and land improvements 11,238      
Carrying amount of building and improvements 72,706      
Accumulated depreciation 25,551      
Seniors Housing Operating | Salaberry-de-Valleyfield, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 13,843      
Initial cost of land and land improvements 1,874      
Initial cost of building and improvements 15,120      
Cost Capitalized Subsequent to Acquisition 2,830      
Carrying amount of land and land improvements 1,924      
Carrying amount of building and improvements 17,900      
Accumulated depreciation 2,306      
Seniors Housing Operating | Salem, OR 1        
SEC Schedule, 12-28, 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 1,452      
Carrying amount of land and land improvements 918      
Carrying amount of building and improvements 11,111      
Accumulated depreciation 2,093      
Seniors Housing Operating | Salem, OR 2        
SEC Schedule, 12-28, Real 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 1,601      
Carrying amount of land and land improvements 1,227      
Carrying amount of building and improvements 10,233      
Accumulated depreciation 2,059      
Seniors Housing Operating | Salem, OR 3        
SEC Schedule, 12-28, 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 23,014      
Carrying amount of land and land improvements 2,877      
Carrying amount of building and improvements 20,137      
Accumulated depreciation 3,354      
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 12,123      
Carrying amount of land and land improvements 5,155      
Carrying amount of building and improvements 53,502      
Accumulated depreciation 16,332      
Seniors Housing Operating | Salisbury, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,720      
Initial cost of building and improvements 15,269      
Cost Capitalized Subsequent to Acquisition 4,044      
Carrying amount of land and land improvements 2,810      
Carrying amount of building and improvements 19,223      
Accumulated depreciation 4,814      
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 2,604      
Carrying amount of land and land improvements 1,396      
Carrying amount of building and improvements 22,259      
Accumulated depreciation 9,201      
Seniors Housing Operating | San Antonio, TX 1        
SEC Schedule, 12-28, 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 37,179      
Carrying amount of land and land improvements 6,120      
Carrying amount of building and improvements 31,059      
Accumulated depreciation 10,474      
Seniors Housing Operating | San Antonio, TX 2        
SEC Schedule, 12-28, 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 67,009      
Carrying amount of land and land improvements 5,045      
Carrying amount of building and improvements 61,964      
Accumulated depreciation 12,864      
Seniors Housing Operating | San Antonio, TX 3        
SEC Schedule, 12-28, 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 8,852      
Carrying amount of land and land improvements 11,686      
Carrying amount of building and improvements 78,782      
Accumulated depreciation 15,163      
Seniors Housing Operating | San Antonio, TX 4        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,262      
Initial cost of building and improvements 31,075      
Cost Capitalized Subsequent to Acquisition 2,720      
Carrying amount of land and land improvements 2,262      
Carrying amount of building and improvements 33,795      
Accumulated depreciation 1,259      
Seniors Housing Operating | San Diego, CA 1        
SEC Schedule, 12-28, 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 9,848      
Carrying amount of land and land improvements 5,810      
Carrying amount of building and improvements 72,926      
Accumulated depreciation 26,934      
Seniors Housing Operating | San Diego, CA 2        
SEC Schedule, 12-28, 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 2,652      
Carrying amount of land and land improvements 3,016      
Carrying amount of building and improvements 29,800      
Accumulated depreciation 9,618      
Seniors Housing Operating | San Diego, CA 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 27,765      
Initial cost of land and land improvements 4,179      
Initial cost of building and improvements 40,328      
Cost Capitalized Subsequent to Acquisition 1,829      
Carrying amount of land and land improvements 4,179      
Carrying amount of building and improvements 42,157      
Accumulated depreciation 6,717      
Seniors Housing Operating | San Francisco, CA 1        
SEC Schedule, 12-28, 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 15,040      
Carrying amount of land and land improvements 5,920      
Carrying amount of building and improvements 106,679      
Accumulated depreciation 29,368      
Seniors Housing Operating | San Francisco, CA 2        
SEC Schedule, 12-28, 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 12,022      
Carrying amount of land and land improvements 11,800      
Carrying amount of building and improvements 89,236      
Accumulated depreciation 24,463      
Seniors Housing Operating | San Francisco, CA 3        
SEC Schedule, 12-28, 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 52,609      
Carrying amount of land and land improvements 13,894      
Carrying amount of building and improvements 38,715      
Accumulated depreciation 2,271      
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 2,273      
Carrying amount of land and land improvements 3,170      
Carrying amount of building and improvements 17,789      
Accumulated depreciation 6,147      
Seniors Housing Operating | San Jose, CA 1        
SEC Schedule, 12-28, 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 9,509      
Carrying amount of land and land improvements 3,280      
Carrying amount of building and improvements 56,332      
Accumulated depreciation 18,928      
Seniors Housing Operating | San Jose, CA 2        
SEC Schedule, 12-28, 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 6,213      
Carrying amount of land and land improvements 11,966      
Carrying amount of building and improvements 33,794      
Accumulated depreciation 10,049      
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 5,716      
Carrying amount of land and land improvements 1,620      
Carrying amount of building and improvements 33,108      
Accumulated depreciation 8,610      
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 13,937      
Carrying amount of land and land improvements 8,781      
Carrying amount of building and improvements 86,079      
Accumulated depreciation 22,887      
Seniors Housing Operating | Sand Springs, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 910      
Initial cost of building and improvements 19,654      
Cost Capitalized Subsequent to Acquisition 714      
Carrying amount of land and land improvements 915      
Carrying amount of building and improvements 20,363      
Accumulated depreciation 6,041      
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 2,036      
Carrying amount of land and land improvements 2,220      
Carrying amount of building and improvements 10,390      
Accumulated depreciation 4,741      
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 3,145      
Cost Capitalized Subsequent to Acquisition 1,720      
Carrying amount of land and land improvements 2,077      
Carrying amount of building and improvements 4,865      
Accumulated depreciation 1,124      
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 2,079      
Carrying amount of land and land improvements 5,266      
Carrying amount of building and improvements 30,403      
Accumulated depreciation 10,074      
Seniors Housing Operating | Santa Rosa, CA 1        
SEC Schedule, 12-28, 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 4,400      
Carrying amount of land and land improvements 2,309      
Carrying amount of building and improvements 30,614      
Accumulated depreciation 8,376      
Seniors Housing Operating | Santa Rosa, CA 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,484      
Initial cost of building and improvements 52,195      
Cost Capitalized Subsequent to Acquisition 1,910      
Carrying amount of land and land improvements 6,484      
Carrying amount of building and improvements 54,105      
Accumulated depreciation 4,294      
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 20,105      
Initial cost of building and improvements 96,495      
Cost Capitalized Subsequent to Acquisition 8,622      
Carrying amount of land and land improvements 19,723      
Carrying amount of building and improvements 105,499      
Accumulated depreciation 11,717      
Seniors Housing Operating | Saskatoon, SK 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 2,913      
Initial cost of land and land improvements 981      
Initial cost of building and improvements 13,905      
Cost Capitalized Subsequent to Acquisition 1,530      
Carrying amount of land and land improvements 1,031      
Carrying amount of building and improvements 15,385      
Accumulated depreciation 4,360      
Seniors Housing Operating | Saskatoon, SK 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,301      
Initial cost of land and land improvements 1,382      
Initial cost of building and improvements 17,609      
Cost Capitalized Subsequent to Acquisition 2,237      
Carrying amount of land and land improvements 1,553      
Carrying amount of building and improvements 19,675      
Accumulated depreciation 6,223      
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 16,218      
Cost Capitalized Subsequent to Acquisition 1,372      
Carrying amount of land and land improvements 1,748      
Carrying amount of building and improvements 17,575      
Accumulated depreciation 2,428      
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 2,107      
Carrying amount of land and land improvements 2,504      
Carrying amount of building and improvements 24,926      
Accumulated depreciation 8,967      
Seniors Housing Operating | Schererville, 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 3,693      
Initial cost of building and improvements 30,512      
Cost Capitalized Subsequent to Acquisition 4,264      
Carrying amount of land and land improvements 3,693      
Carrying amount of building and improvements 34,776      
Accumulated depreciation 811      
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 3,770      
Carrying amount of land and land improvements 2,500      
Carrying amount of building and improvements 7,660      
Accumulated depreciation 3,099      
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 9,934      
Initial cost of land and land improvements 896      
Initial cost of building and improvements 10,591      
Cost Capitalized Subsequent to Acquisition 788      
Carrying amount of land and land improvements 896      
Carrying amount of building and improvements 11,379      
Accumulated depreciation 2,380      
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 4,709      
Carrying amount of land and land improvements 6,308      
Carrying amount of building and improvements 77,559      
Accumulated depreciation 28,806      
Seniors Housing Operating | Seattle, WA 1        
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 4,692      
Carrying amount of land and land improvements 10,700      
Carrying amount of building and improvements 41,953      
Accumulated depreciation 17,584      
Seniors Housing Operating | Seattle, WA 2        
SEC Schedule, 12-28, Real 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 3,277      
Carrying amount of land and land improvements 1,150      
Carrying amount of building and improvements 23,164      
Accumulated depreciation 6,576      
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 1,999      
Carrying amount of land and land improvements 769      
Carrying amount of building and improvements 27,892      
Accumulated depreciation 9,393      
Seniors Housing Operating | Sevenoaks, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,181      
Initial cost of building and improvements 40,240      
Cost Capitalized Subsequent to Acquisition 4,849      
Carrying amount of land and land improvements 6,384      
Carrying amount of building and improvements 44,886      
Accumulated depreciation 17,538      
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 7,159      
Carrying amount of land and land improvements 44      
Carrying amount of building and improvements 74,738      
Accumulated depreciation 18,643      
Seniors Housing Operating | Shawnee, 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 2,109      
Initial cost of building and improvements 22,141      
Cost Capitalized Subsequent to Acquisition 560      
Carrying amount of land and land improvements 2,109      
Carrying amount of building and improvements 22,701      
Accumulated depreciation 1,597      
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 1,399      
Carrying amount of land and land improvements 1,110      
Carrying amount of building and improvements 27,673      
Accumulated depreciation 9,321      
Seniors Housing Operating | Sherman, TX 1        
SEC Schedule, 12-28, 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 1,823      
Carrying amount of land and land improvements 700      
Carrying amount of building and improvements 7,044      
Accumulated depreciation 2,578      
Seniors Housing Operating | Sherman, TX 2        
SEC Schedule, 12-28, Real 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 22,567      
Cost Capitalized Subsequent to Acquisition 585      
Carrying amount of land and land improvements 1,850      
Carrying amount of building and improvements 23,014      
Accumulated depreciation 3,802      
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 5,101      
Carrying amount of land and land improvements 2,165      
Carrying amount of building and improvements 43,172      
Accumulated depreciation 14,377      
Seniors Housing Operating | Sidcup, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,446      
Initial cost of building and improvements 56,570      
Cost Capitalized Subsequent to Acquisition 9,015      
Carrying amount of land and land improvements 7,659      
Carrying amount of building and improvements 65,372      
Accumulated depreciation 24,911      
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 64,994      
Carrying amount of land and land improvements 3,449      
Carrying amount of building and improvements 61,545      
Accumulated depreciation 8,093      
Seniors Housing Operating | Simi Valley, CA 1        
SEC Schedule, 12-28, 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 3,019      
Carrying amount of land and land improvements 3,340      
Carrying amount of building and improvements 19,543      
Accumulated depreciation 7,791      
Seniors Housing Operating | Simi Valley, CA 2        
SEC Schedule, 12-28, 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 9,793      
Carrying amount of land and land improvements 5,510      
Carrying amount of building and improvements 61,199      
Accumulated depreciation 18,153      
Seniors Housing Operating | Simi Valley, CA 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,084      
Initial cost of building and improvements 41,629      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,084      
Carrying amount of building and improvements 41,629      
Accumulated depreciation 2,528      
Seniors Housing Operating | Solihull, UK 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,844      
Initial cost of building and improvements 26,402      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 2,844      
Carrying amount of building and improvements 26,402      
Accumulated depreciation 11,749      
Seniors Housing Operating | Solihull, UK 2        
SEC Schedule, 12-28, 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 25,274      
Carrying amount of land and land improvements 2,393      
Carrying amount of building and improvements 22,881      
Accumulated depreciation 7,201      
Seniors Housing Operating | Solihull, UK 3        
SEC Schedule, 12-28, 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 2,730      
Carrying amount of land and land improvements 3,666      
Carrying amount of building and improvements 28,688      
Accumulated depreciation 9,781      
Seniors Housing Operating | Solihull, UK 4        
SEC Schedule, 12-28, Real 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 1,322      
Carrying amount of land and land improvements 1,911      
Carrying amount of building and improvements 11,847      
Accumulated depreciation 2,555      
Seniors Housing Operating | Sonning, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,644      
Initial cost of building and improvements 42,155      
Cost Capitalized Subsequent to Acquisition 4,022      
Carrying amount of land and land improvements 5,807      
Carrying amount of building and improvements 46,014      
Accumulated depreciation 15,953      
Seniors Housing Operating | Sonoma, CA 1        
SEC Schedule, 12-28, Real 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 6,821      
Carrying amount of land and land improvements 1,109      
Carrying amount of building and improvements 25,212      
Accumulated depreciation 11,692      
Seniors Housing Operating | Sonoma, CA 2        
SEC Schedule, 12-28, 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 4,285      
Carrying amount of land and land improvements 2,819      
Carrying amount of building and improvements 26,176      
Accumulated depreciation 7,551      
Seniors Housing Operating | South Haven, 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 1,140      
Initial cost of building and improvements 7,793      
Cost Capitalized Subsequent to Acquisition 675      
Carrying amount of land and land improvements 1,140      
Carrying amount of building and improvements 8,468      
Accumulated depreciation 1,105      
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 5,078      
Carrying amount of land and land improvements 4,646      
Carrying amount of building and improvements 47,783      
Accumulated depreciation 9,826      
Seniors Housing Operating | Southbourne, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 53,212      
Carrying amount of land and land improvements 5,709      
Carrying amount of building and improvements 47,503      
Accumulated depreciation 16,249      
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 9,829      
Carrying amount of land and land improvements 6,207      
Carrying amount of building and improvements 66,634      
Accumulated depreciation 16,348      
Seniors Housing Operating | Spokane, WA 1        
SEC Schedule, 12-28, 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 5,966      
Carrying amount of land and land improvements 3,200      
Carrying amount of building and improvements 31,030      
Accumulated depreciation 11,525      
Seniors Housing Operating | Spokane, WA 2        
SEC Schedule, 12-28, 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 5,204      
Carrying amount of land and land improvements 2,580      
Carrying amount of building and improvements 30,546      
Accumulated depreciation 10,612      
Seniors Housing Operating | Spokane, WA 3        
SEC Schedule, 12-28, Real 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 11,997      
Cost Capitalized Subsequent to Acquisition 357      
Carrying amount of land and land improvements 1,334      
Carrying amount of building and improvements 12,354      
Accumulated depreciation 1,906      
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 28,237      
Cost Capitalized Subsequent to Acquisition 475      
Carrying amount of land and land improvements 2,965      
Carrying amount of building and improvements 28,697      
Accumulated depreciation 4,904      
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 18,767      
Cost Capitalized Subsequent to Acquisition 842      
Carrying amount of land and land improvements 1,172      
Carrying amount of building and improvements 19,603      
Accumulated depreciation 2,595      
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 17,972      
Cost Capitalized Subsequent to Acquisition 1,007      
Carrying amount of land and land improvements 1,691      
Carrying amount of building and improvements 18,955      
Accumulated depreciation 2,405      
Seniors Housing Operating | St Bruno, 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 9,260      
Initial cost of building and improvements 62,817      
Cost Capitalized Subsequent to Acquisition 5,808      
Carrying amount of land and land improvements 9,260      
Carrying amount of building and improvements 68,625      
Accumulated depreciation 1,208      
Seniors Housing Operating | St Charles, 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 3,451      
Initial cost of building and improvements 41,346      
Cost Capitalized Subsequent to Acquisition 3,570      
Carrying amount of land and land improvements 3,451      
Carrying amount of building and improvements 44,916      
Accumulated depreciation 632      
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 6,057      
Initial cost of land and land improvements 1,145      
Initial cost of building and improvements 17,863      
Cost Capitalized Subsequent to Acquisition 1,965      
Carrying amount of land and land improvements 1,234      
Carrying amount of building and improvements 19,739      
Accumulated depreciation 7,359      
Seniors Housing Operating | St. Johns, 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 794      
Initial cost of building and improvements 5,682      
Cost Capitalized Subsequent to Acquisition 293      
Carrying amount of land and land improvements 794      
Carrying amount of building and improvements 5,975      
Accumulated depreciation 653      
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 9,218      
Initial cost of building and improvements 39,883      
Cost Capitalized Subsequent to Acquisition 3,292      
Carrying amount of land and land improvements 9,540      
Carrying amount of building and improvements 42,853      
Accumulated depreciation 13,400      
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 3,464      
Cost Capitalized Subsequent to Acquisition 1,447      
Carrying amount of land and land improvements 1,072      
Carrying amount of building and improvements 4,911      
Accumulated depreciation 906      
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 0      
Initial cost of land and land improvements 1,175      
Initial cost of building and improvements 17,397      
Cost Capitalized Subsequent to Acquisition 1,839      
Carrying amount of land and land improvements 1,300      
Carrying amount of building and improvements 19,111      
Accumulated depreciation 6,212      
Seniors Housing Operating | Stockport, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 31,929      
Carrying amount of land and land improvements 4,511      
Carrying amount of building and improvements 27,418      
Accumulated depreciation 9,936      
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 5,575      
Carrying amount of land and land improvements 2,372      
Carrying amount of building and improvements 11,466      
Accumulated depreciation 4,048      
Seniors Housing Operating | Strongsville, OH 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,726      
Initial cost of land and land improvements 1,128      
Initial cost of building and improvements 10,940      
Cost Capitalized Subsequent to Acquisition 758      
Carrying amount of land and land improvements 1,132      
Carrying amount of building and improvements 11,694      
Accumulated depreciation 2,870      
Seniors Housing Operating | Strongsville, OH 2        
SEC Schedule, 12-28, 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 13,463      
Cost Capitalized Subsequent to Acquisition 825      
Carrying amount of land and land improvements 2,578      
Carrying amount of building and improvements 14,287      
Accumulated depreciation 2,462      
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 1,284      
Carrying amount of land and land improvements 5,276      
Carrying amount of building and improvements 25,466      
Accumulated depreciation 4,819      
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 2,541      
Carrying amount of land and land improvements 4,124      
Carrying amount of building and improvements 27,730      
Accumulated depreciation 10,008      
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 3,665      
Carrying amount of land and land improvements 4,736      
Carrying amount of building and improvements 35,028      
Accumulated depreciation 7,296      
Seniors Housing Operating | Sugar Land, TX 1        
SEC Schedule, 12-28, 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 2,192      
Carrying amount of land and land improvements 960      
Carrying amount of building and improvements 33,615      
Accumulated depreciation 12,651      
Seniors Housing Operating | Sugar Land, TX 2        
SEC Schedule, 12-28, 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 7,231      
Carrying amount of land and land improvements 4,272      
Carrying amount of building and improvements 67,724      
Accumulated depreciation 16,647      
Seniors Housing Operating | Summerville, SC 1        
SEC Schedule, 12-28, 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 18,017      
Cost Capitalized Subsequent to Acquisition 655      
Carrying amount of land and land improvements 2,175      
Carrying amount of building and improvements 18,672      
Accumulated depreciation 2,186      
Seniors Housing Operating | Summerville, SC 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,862      
Initial cost of building and improvements 75,991      
Cost Capitalized Subsequent to Acquisition 2,907      
Carrying amount of land and land improvements 6,862      
Carrying amount of building and improvements 78,898      
Accumulated depreciation 436      
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 14,665      
Carrying amount of land and land improvements 3,084      
Carrying amount of building and improvements 28,813      
Accumulated depreciation 5,401      
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 3,877      
Carrying amount of land and land improvements 1,250      
Carrying amount of building and improvements 25,655      
Accumulated depreciation 8,523      
Seniors Housing Operating | Sunninghill, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 11,632      
Initial cost of building and improvements 42,233      
Cost Capitalized Subsequent to Acquisition 713      
Carrying amount of land and land improvements 11,622      
Carrying amount of building and improvements 42,956      
Accumulated depreciation 7,765      
Seniors Housing Operating | Sunnyvale, CA 1        
SEC Schedule, 12-28, 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 4,881      
Carrying amount of land and land improvements 5,420      
Carrying amount of building and improvements 46,563      
Accumulated depreciation 16,763      
Seniors Housing Operating | Sunnyvale, CA 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 15,005      
Initial cost of building and improvements 61,543      
Cost Capitalized Subsequent to Acquisition 4,721      
Carrying amount of land and land improvements 15,005      
Carrying amount of building and improvements 66,264      
Accumulated depreciation 610      
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 4,796      
Initial cost of land and land improvements 3,605      
Initial cost of building and improvements 18,818      
Cost Capitalized Subsequent to Acquisition 2,965      
Carrying amount of land and land improvements 3,807      
Carrying amount of building and improvements 21,581      
Accumulated depreciation 8,517      
Seniors Housing Operating | Sutton, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,096      
Initial cost of building and improvements 14,532      
Cost Capitalized Subsequent to Acquisition 2,188      
Carrying amount of land and land improvements 4,231      
Carrying amount of building and improvements 16,585      
Accumulated depreciation 3,261      
Seniors Housing Operating | Sutton Coldfield, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,807      
Initial cost of building and improvements 11,313      
Cost Capitalized Subsequent to Acquisition 1,391      
Carrying amount of land and land improvements 2,899      
Carrying amount of building and improvements 12,612      
Accumulated depreciation 2,521      
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 1,972      
Carrying amount of land and land improvements 1,560      
Carrying amount of building and improvements 13,510      
Accumulated depreciation 5,658      
Seniors Housing Operating | Swartz Creek, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 925      
Initial cost of building and improvements 7,524      
Cost Capitalized Subsequent to Acquisition 454      
Carrying amount of land and land improvements 935      
Carrying amount of building and improvements 7,968      
Accumulated depreciation 877      
Seniors Housing Operating | Sway, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,145      
Initial cost of building and improvements 15,508      
Cost Capitalized Subsequent to Acquisition 1,836      
Carrying amount of land and land improvements 4,282      
Carrying amount of building and improvements 17,207      
Accumulated depreciation 5,263      
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 1,547      
Carrying amount of land and land improvements 521      
Carrying amount of building and improvements 11,637      
Accumulated depreciation 4,114      
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 11,401      
Cost Capitalized Subsequent to Acquisition 668      
Carrying amount of land and land improvements 1,048      
Carrying amount of building and improvements 12,054      
Accumulated depreciation 1,714      
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 10,686      
Initial cost of land and land improvements 1,205      
Initial cost of building and improvements 11,991      
Cost Capitalized Subsequent to Acquisition 70      
Carrying amount of land and land improvements 1,209      
Carrying amount of building and improvements 12,057      
Accumulated depreciation 2,119      
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 12,103      
Initial cost of land and land improvements 1,440      
Initial cost of building and improvements 11,675      
Cost Capitalized Subsequent to Acquisition 1,140      
Carrying amount of land and land improvements 1,577      
Carrying amount of building and improvements 12,678      
Accumulated depreciation 2,796      
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 19,528      
Carrying amount of land and land improvements 4,170      
Carrying amount of building and improvements 92,905      
Accumulated depreciation 30,345      
Seniors Housing Operating | Tallmadge, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,195      
Initial cost of land and land improvements 1,096      
Initial cost of building and improvements 19,504      
Cost Capitalized Subsequent to Acquisition 1,176      
Carrying amount of land and land improvements 1,096      
Carrying amount of building and improvements 20,680      
Accumulated depreciation 1,868      
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 1,643      
Initial cost of building and improvements 11,124      
Cost Capitalized Subsequent to Acquisition 1,696      
Carrying amount of land and land improvements 1,709      
Carrying amount of building and improvements 12,754      
Accumulated depreciation 7,140      
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 11,700      
Initial cost of land and land improvements 1,942      
Initial cost of building and improvements 12,011      
Cost Capitalized Subsequent to Acquisition 77      
Carrying amount of land and land improvements 1,983      
Carrying amount of building and improvements 12,047      
Accumulated depreciation 1,875      
Seniors Housing Operating | Temple, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 794      
Carrying amount of land and land improvements 182      
Carrying amount of building and improvements 612      
Accumulated depreciation 1      
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 7,512      
Cost Capitalized Subsequent to Acquisition 1,711      
Carrying amount of land and land improvements 1,491      
Carrying amount of building and improvements 9,135      
Accumulated depreciation 1,252      
Seniors Housing Operating | The Villages, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,268      
Initial cost of building and improvements 57,570      
Cost Capitalized Subsequent to Acquisition 8,837      
Carrying amount of land and land improvements 1,268      
Carrying amount of building and improvements 66,407      
Accumulated depreciation 840      
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 999      
Carrying amount of land and land improvements 480      
Carrying amount of building and improvements 13,378      
Accumulated depreciation 5,096      
Seniors Housing Operating | Tipp 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 1,223      
Initial cost of building and improvements 15,421      
Cost Capitalized Subsequent to Acquisition 1,482      
Carrying amount of land and land improvements 1,223      
Carrying amount of building and improvements 16,903      
Accumulated depreciation 2,214      
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 2,622      
Carrying amount of land and land improvements 1,708      
Carrying amount of building and improvements 37,151      
Accumulated depreciation 12,720      
Seniors Housing Operating | Tonawanda, NY 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 13,656      
Initial cost of land and land improvements 1,554      
Initial cost of building and improvements 13,332      
Cost Capitalized Subsequent to Acquisition 1,473      
Carrying amount of land and land improvements 1,649      
Carrying amount of building and improvements 14,710      
Accumulated depreciation 3,320      
Seniors Housing Operating | Tonawanda, NY 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,230      
Initial cost of land and land improvements 2,460      
Initial cost of building and improvements 12,564      
Cost Capitalized Subsequent to Acquisition 1,618      
Carrying amount of land and land improvements 2,489      
Carrying amount of building and improvements 14,153      
Accumulated depreciation 3,361      
Seniors Housing Operating | Topeka, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 260      
Initial cost of building and improvements 12,712      
Cost Capitalized Subsequent to Acquisition 363      
Carrying amount of land and land improvements 260      
Carrying amount of building and improvements 13,075      
Accumulated depreciation 4,042      
Seniors Housing Operating | Toronto, ON 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,058      
Initial cost of land and land improvements 1,079      
Initial cost of building and improvements 5,364      
Cost Capitalized Subsequent to Acquisition 1,114      
Carrying amount of land and land improvements 1,097      
Carrying amount of building and improvements 6,460      
Accumulated depreciation 2,233      
Seniors Housing Operating | Toronto, ON 2        
SEC Schedule, 12-28, 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 32,757      
Cost Capitalized Subsequent to Acquisition 3,946      
Carrying amount of land and land improvements 3,697      
Carrying amount of building and improvements 36,406      
Accumulated depreciation 12,561      
Seniors Housing Operating | Toronto, ON 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,304      
Initial cost of building and improvements 53,488      
Cost Capitalized Subsequent to Acquisition 5,742      
Carrying amount of land and land improvements 5,596      
Carrying amount of building and improvements 58,938      
Accumulated depreciation 22,846      
Seniors Housing Operating | Toronto, ON 4        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,008      
Initial cost of building and improvements 19,620      
Cost Capitalized Subsequent to Acquisition 7,445      
Carrying amount of land and land improvements 2,054      
Carrying amount of building and improvements 27,019      
Accumulated depreciation 5,874      
Seniors Housing Operating | Toronto, ON 5        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 31,242      
Initial cost of land and land improvements 5,132      
Initial cost of building and improvements 41,657      
Cost Capitalized Subsequent to Acquisition 6,261      
Carrying amount of land and land improvements 5,417      
Carrying amount of building and improvements 47,633      
Accumulated depreciation 16,375      
Seniors Housing Operating | Toronto, ON 6        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 7,018      
Initial cost of land and land improvements 2,480      
Initial cost of building and improvements 7,571      
Cost Capitalized Subsequent to Acquisition 4,119      
Carrying amount of land and land improvements 2,906      
Carrying amount of building and improvements 11,264      
Accumulated depreciation 3,022      
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 608      
Carrying amount of land and land improvements 3,519      
Carrying amount of building and improvements 73,724      
Accumulated depreciation 13,933      
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 26,327      
Cost Capitalized Subsequent to Acquisition 2,488      
Carrying amount of land and land improvements 1,074      
Carrying amount of building and improvements 28,783      
Accumulated depreciation 4,005      
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 14,123      
Cost Capitalized Subsequent to Acquisition 639      
Carrying amount of land and land improvements 1,777      
Carrying amount of building and improvements 14,772      
Accumulated depreciation 1,808      
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 9,298      
Initial cost of building and improvements 30,934      
Cost Capitalized Subsequent to Acquisition 1,796      
Carrying amount of land and land improvements 9,350      
Carrying amount of building and improvements 32,678      
Accumulated depreciation 4,832      
Seniors Housing Operating | Tucson, AZ 1        
SEC Schedule, 12-28, 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 8,196      
Carrying amount of land and land improvements 830      
Carrying amount of building and improvements 14,375      
Accumulated depreciation 4,704      
Seniors Housing Operating | Tucson, AZ 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,978      
Initial cost of building and improvements 78,932      
Cost Capitalized Subsequent to Acquisition 5,026      
Carrying amount of land and land improvements 7,049      
Carrying amount of building and improvements 83,887      
Accumulated depreciation 17,316      
Seniors Housing Operating | Tulsa, OK 1        
SEC Schedule, 12-28, Real 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 3,104      
Carrying amount of land and land improvements 1,448      
Carrying amount of building and improvements 24,271      
Accumulated depreciation 11,765      
Seniors Housing Operating | Tulsa, OK 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,614      
Initial cost of building and improvements 20,504      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,614      
Carrying amount of building and improvements 20,504      
Accumulated depreciation 11,121      
Seniors Housing Operating | Tulsa, OK 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,320      
Initial cost of building and improvements 10,087      
Cost Capitalized Subsequent to Acquisition 252      
Carrying amount of land and land improvements 1,320      
Carrying amount of building and improvements 10,339      
Accumulated depreciation 3,375      
Seniors Housing Operating | Tulsa, OK 4        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 12,301      
Initial cost of land and land improvements 1,752      
Initial cost of building and improvements 28,421      
Cost Capitalized Subsequent to Acquisition 243      
Carrying amount of land and land improvements 1,752      
Carrying amount of building and improvements 28,664      
Accumulated depreciation 5,328      
Seniors Housing Operating | Tulsa, OK 5        
SEC Schedule, 12-28, 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 14,219      
Cost Capitalized Subsequent to Acquisition 289      
Carrying amount of land and land improvements 3,220      
Carrying amount of building and improvements 14,449      
Accumulated depreciation 2,522      
Seniors Housing Operating | Tulsa, OK 6        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,053      
Initial cost of building and improvements 15,596      
Cost Capitalized Subsequent to Acquisition 2,933      
Carrying amount of land and land improvements 3,053      
Carrying amount of building and improvements 18,529      
Accumulated depreciation 911      
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 1,862      
Carrying amount of land and land improvements 2,266      
Carrying amount of building and improvements 14,864      
Accumulated depreciation 3,468      
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 5,582      
Cost Capitalized Subsequent to Acquisition 427      
Carrying amount of land and land improvements 506      
Carrying amount of building and improvements 5,980      
Accumulated depreciation 863      
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 8,366      
Initial cost of land and land improvements 1,042      
Initial cost of building and improvements 8,396      
Cost Capitalized Subsequent to Acquisition 616      
Carrying amount of land and land improvements 1,071      
Carrying amount of building and improvements 8,983      
Accumulated depreciation 2,305      
Seniors Housing Operating | Tyler, TX 1        
SEC Schedule, 12-28, 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 1,288      
Carrying amount of land and land improvements 650      
Carrying amount of building and improvements 6,556      
Accumulated depreciation 2,556      
Seniors Housing Operating | Tyler, TX 2        
SEC Schedule, 12-28, Real 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 10,515      
Cost Capitalized Subsequent to Acquisition 954      
Carrying amount of land and land improvements 1,386      
Carrying amount of building and improvements 11,389      
Accumulated depreciation 1,657      
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 649      
Carrying amount of land and land improvements 3,160      
Carrying amount of building and improvements 43,245      
Accumulated depreciation 11,006      
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 999      
Carrying amount of land and land improvements 1,909      
Carrying amount of building and improvements 29,185      
Accumulated depreciation 6,667      
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 2,252      
Carrying amount of land and land improvements 1,232      
Carrying amount of building and improvements 15,577      
Accumulated depreciation 5,932      
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 5,514      
Cost Capitalized Subsequent to Acquisition 1,098      
Carrying amount of land and land improvements 1,758      
Carrying amount of building and improvements 6,612      
Accumulated depreciation 1,529      
Seniors Housing Operating | Utica, 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 2,596      
Initial cost of building and improvements 36,067      
Cost Capitalized Subsequent to Acquisition 2,392      
Carrying amount of land and land improvements 2,596      
Carrying amount of building and improvements 38,459      
Accumulated depreciation 4,330      
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 6,722      
Carrying amount of land and land improvements 900      
Carrying amount of building and improvements 23,822      
Accumulated depreciation 10,803      
Seniors Housing Operating | Vallejo, CA 1        
SEC Schedule, 12-28, 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 7,347      
Carrying amount of land and land improvements 4,030      
Carrying amount of building and improvements 25,317      
Accumulated depreciation 11,630      
Seniors Housing Operating | Vallejo, CA 2        
SEC Schedule, 12-28, 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 2,650      
Carrying amount of land and land improvements 2,330      
Carrying amount of building and improvements 18,057      
Accumulated depreciation 7,091      
Seniors Housing Operating | Vancouver, WA 1        
SEC Schedule, 12-28, Real 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 2,239      
Carrying amount of land and land improvements 1,821      
Carrying amount of building and improvements 21,280      
Accumulated depreciation 8,189      
Seniors Housing Operating | Vancouver, WA 2        
SEC Schedule, 12-28, Real 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 1,239      
Carrying amount of land and land improvements 1,406      
Carrying amount of building and improvements 15,567      
Accumulated depreciation 2,705      
Seniors Housing Operating | Vancouver, WA 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,783      
Initial cost of building and improvements 97,858      
Cost Capitalized Subsequent to Acquisition 12,825      
Carrying amount of land and land improvements 4,783      
Carrying amount of building and improvements 110,683      
Accumulated depreciation 12,042      
Seniors Housing Operating | Vancouver, WA 4        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,188      
Initial cost of building and improvements 101,400      
Cost Capitalized Subsequent to Acquisition 11,839      
Carrying amount of land and land improvements 5,188      
Carrying amount of building and improvements 113,239      
Accumulated depreciation 12,034      
Seniors Housing Operating | Vancouver, WA 5        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,477      
Initial cost of building and improvements 22,773      
Cost Capitalized Subsequent to Acquisition 862      
Carrying amount of land and land improvements 1,477      
Carrying amount of building and improvements 23,635      
Accumulated depreciation 1,882      
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 2,880      
Carrying amount of land and land improvements 7,552      
Carrying amount of building and improvements 9,182      
Accumulated depreciation 6,134      
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 5,334      
Cost Capitalized Subsequent to Acquisition 353      
Carrying amount of land and land improvements 832      
Carrying amount of building and improvements 5,655      
Accumulated depreciation 1,037      
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 648      
Carrying amount of land and land improvements 412      
Carrying amount of building and improvements 3,585      
Accumulated depreciation 1,438      
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 6,794      
Initial cost of land and land improvements 1,852      
Initial cost of building and improvements 14,214      
Cost Capitalized Subsequent to Acquisition 2,578      
Carrying amount of land and land improvements 1,932      
Carrying amount of building and improvements 16,712      
Accumulated depreciation 5,034      
Seniors Housing Operating | Venice, FL 1        
SEC Schedule, 12-28, 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 102,226      
Cost Capitalized Subsequent to Acquisition 359      
Carrying amount of land and land improvements 13,692      
Carrying amount of building and improvements 102,539      
Accumulated depreciation 12,857      
Seniors Housing Operating | Venice, FL 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,150      
Initial cost of building and improvements 10,674      
Cost Capitalized Subsequent to Acquisition 661      
Carrying amount of land and land improvements 1,150      
Carrying amount of building and improvements 11,335      
Accumulated depreciation 4,228      
Seniors Housing Operating | Vernon, 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 3,911      
Initial cost of building and improvements 43,983      
Cost Capitalized Subsequent to Acquisition 4,590      
Carrying amount of land and land improvements 4,020      
Carrying amount of building and improvements 48,464      
Accumulated depreciation 5,540      
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 27,617      
Carrying amount of land and land improvements 2,930      
Carrying amount of building and improvements 67,687      
Accumulated depreciation 33,300      
Seniors Housing Operating | Victoria, BC 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,272      
Initial cost of land and land improvements 2,856      
Initial cost of building and improvements 18,038      
Cost Capitalized Subsequent to Acquisition 2,046      
Carrying amount of land and land improvements 3,025      
Carrying amount of building and improvements 19,915      
Accumulated depreciation 7,421      
Seniors Housing Operating | Victoria, BC 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,681      
Initial cost of building and improvements 15,774      
Cost Capitalized Subsequent to Acquisition 1,939      
Carrying amount of land and land improvements 3,886      
Carrying amount of building and improvements 17,508      
Accumulated depreciation 6,749      
Seniors Housing Operating | Victoria, BC 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,476      
Initial cost of building and improvements 15,379      
Cost Capitalized Subsequent to Acquisition 2,343      
Carrying amount of land and land improvements 2,626      
Carrying amount of building and improvements 17,572      
Accumulated depreciation 4,602      
Seniors Housing Operating | Virginia Water, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,106      
Initial cost of building and improvements 29,937      
Cost Capitalized Subsequent to Acquisition 6,808      
Carrying amount of land and land improvements 5,579      
Carrying amount of building and improvements 38,272      
Accumulated depreciation 17,618      
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 16,855      
Cost Capitalized Subsequent to Acquisition 2,967      
Carrying amount of land and land improvements 911      
Carrying amount of building and improvements 19,779      
Accumulated depreciation 2,814      
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 3,499      
Carrying amount of land and land improvements 3,873      
Carrying amount of building and improvements 27,638      
Accumulated depreciation 8,505      
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 11,020      
Cost Capitalized Subsequent to Acquisition 679      
Carrying amount of land and land improvements 1,416      
Carrying amount of building and improvements 11,666      
Accumulated depreciation 1,560      
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 4,443      
Carrying amount of land and land improvements 1,731      
Carrying amount of building and improvements 29,712      
Accumulated depreciation 9,709      
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 2,399      
Cost Capitalized Subsequent to Acquisition 135      
Carrying amount of land and land improvements 1,415      
Carrying amount of building and improvements 2,533      
Accumulated depreciation 592      
Seniors Housing Operating | Walnut Creek, CA 1        
SEC Schedule, 12-28, 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 3,796      
Carrying amount of land and land improvements 3,826      
Carrying amount of building and improvements 16,137      
Accumulated depreciation 6,969      
Seniors Housing Operating | Walnut Creek, CA 2        
SEC Schedule, 12-28, 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 23,303      
Carrying amount of land and land improvements 10,469      
Carrying amount of building and improvements 124,044      
Accumulated depreciation 34,763      
Seniors Housing Operating | Walnut Creek, CA 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,167      
Initial cost of building and improvements 107,732      
Cost Capitalized Subsequent to Acquisition 12,962      
Carrying amount of land and land improvements 7,224      
Carrying amount of building and improvements 120,637      
Accumulated depreciation 10,986      
Seniors Housing Operating | Walnut Creek, CA 4        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,243      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,243      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | Wandsworth, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 72,363      
Carrying amount of land and land improvements 23,166      
Carrying amount of building and improvements 49,197      
Accumulated depreciation 5,475      
Seniors Housing Operating | Warner Robins, 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 4,277      
Initial cost of building and improvements 57,330      
Cost Capitalized Subsequent to Acquisition 956      
Carrying amount of land and land improvements 4,277      
Carrying amount of building and improvements 58,286      
Accumulated depreciation 307      
Seniors Housing Operating | Warsaw, 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 2,148      
Initial cost of building and improvements 8,452      
Cost Capitalized Subsequent to Acquisition 832      
Carrying amount of land and land improvements 2,148      
Carrying amount of building and improvements 9,284      
Accumulated depreciation 1,367      
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 4,021      
Initial cost of building and improvements 68,700      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 4,021      
Carrying amount of building and improvements 68,700      
Accumulated depreciation 19,672      
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 2,408      
Cost Capitalized Subsequent to Acquisition 412      
Carrying amount of land and land improvements 230      
Carrying amount of building and improvements 2,818      
Accumulated depreciation 337      
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 5,227      
Carrying amount of land and land improvements 2,210      
Carrying amount of building and improvements 29,817      
Accumulated depreciation 9,335      
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 13,206      
Cost Capitalized Subsequent to Acquisition 1,788      
Carrying amount of land and land improvements 1,022      
Carrying amount of building and improvements 14,960      
Accumulated depreciation 2,026      
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 1,372      
Carrying amount of land and land improvements 2,609      
Carrying amount of building and improvements 45,984      
Accumulated depreciation 5,602      
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 2,009      
Carrying amount of land and land improvements 1,903      
Carrying amount of building and improvements 33,854      
Accumulated depreciation 9,873      
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 906      
Carrying amount of land and land improvements 650      
Carrying amount of building and improvements 6,669      
Accumulated depreciation 2,633      
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 2,485      
Carrying amount of land and land improvements 1,364      
Carrying amount of building and improvements 29,790      
Accumulated depreciation 10,880      
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 919      
Carrying amount of land and land improvements 660      
Carrying amount of building and improvements 6,180      
Accumulated depreciation 2,494      
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 3,143      
Carrying amount of land and land improvements 1,846      
Carrying amount of building and improvements 18,512      
Accumulated depreciation 7,141      
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 1,711      
Carrying amount of land and land improvements 4,690      
Carrying amount of building and improvements 79,173      
Accumulated depreciation 21,688      
Seniors Housing Operating | Wentzville, 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 2,489      
Initial cost of building and improvements 34,358      
Cost Capitalized Subsequent to Acquisition 2,184      
Carrying amount of land and land improvements 2,489      
Carrying amount of building and improvements 36,542      
Accumulated depreciation 483      
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 3,157      
Carrying amount of land and land improvements 4,062      
Carrying amount of building and improvements 50,140      
Accumulated depreciation 16,458      
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 991      
Carrying amount of land and land improvements 1,103      
Carrying amount of building and improvements 13,228      
Accumulated depreciation 4,668      
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 1,562      
Carrying amount of land and land improvements 2,319      
Carrying amount of building and improvements 49,419      
Accumulated depreciation 6,100      
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 2,130      
Carrying amount of land and land improvements 2,658      
Carrying amount of building and improvements 9,593      
Accumulated depreciation 4,346      
Seniors Housing Operating | West Kelowna, 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 3,739      
Initial cost of building and improvements 32,443      
Cost Capitalized Subsequent to Acquisition 3,386      
Carrying amount of land and land improvements 3,833      
Carrying amount of building and improvements 35,735      
Accumulated depreciation 3,881      
Seniors Housing Operating | West Seneca, NY 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,589      
Initial cost of land and land improvements 1,432      
Initial cost of building and improvements 6,684      
Cost Capitalized Subsequent to Acquisition 1,298      
Carrying amount of land and land improvements 1,835      
Carrying amount of building and improvements 7,579      
Accumulated depreciation 1,944      
Seniors Housing Operating | West Seneca, NY 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 8,812      
Initial cost of land and land improvements 1,323      
Initial cost of building and improvements 7,547      
Cost Capitalized Subsequent to Acquisition 761      
Carrying amount of land and land improvements 1,434      
Carrying amount of building and improvements 8,197      
Accumulated depreciation 1,860      
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 14,830      
Initial cost of land and land improvements 7,059      
Initial cost of building and improvements 28,155      
Cost Capitalized Subsequent to Acquisition 8,294      
Carrying amount of land and land improvements 7,444      
Carrying amount of building and improvements 36,064      
Accumulated depreciation 11,833      
Seniors Housing Operating | Westbourne, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,441      
Initial cost of building and improvements 41,420      
Cost Capitalized Subsequent to Acquisition 8,127      
Carrying amount of land and land improvements 5,610      
Carrying amount of building and improvements 49,378      
Accumulated depreciation 17,974      
Seniors Housing Operating | Westerville, OH 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,257      
Initial cost of building and improvements 9,550      
Cost Capitalized Subsequent to Acquisition 416      
Carrying amount of land and land improvements 1,257      
Carrying amount of building and improvements 9,966      
Accumulated depreciation 952      
Seniors Housing Operating | Westerville, OH 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 20,207      
Initial cost of land and land improvements 1,908      
Initial cost of building and improvements 29,363      
Cost Capitalized Subsequent to Acquisition 106      
Carrying amount of land and land improvements 1,908      
Carrying amount of building and improvements 29,469      
Accumulated depreciation 915      
Seniors Housing Operating | Westfield, 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 3,406      
Initial cost of building and improvements 29,114      
Cost Capitalized Subsequent to Acquisition 2,222      
Carrying amount of land and land improvements 3,406      
Carrying amount of building and improvements 31,336      
Accumulated depreciation 442      
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 974      
Carrying amount of land and land improvements 1,468      
Carrying amount of building and improvements 33,553      
Accumulated depreciation 8,650      
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 164      
Carrying amount of land and land improvements 2,060      
Carrying amount of building and improvements 31,460      
Accumulated depreciation 7,493      
Seniors Housing Operating | Weymouth, 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 7,688      
Initial cost of building and improvements 71,023      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 7,688      
Carrying amount of building and improvements 71,023      
Accumulated depreciation 342      
Seniors Housing Operating | Weymouth, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,591      
Initial cost of building and improvements 16,551      
Cost Capitalized Subsequent to Acquisition 1,826      
Carrying amount of land and land improvements 2,676      
Carrying amount of building and improvements 18,292      
Accumulated depreciation 4,912      
Seniors Housing Operating | Wheatfield, 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 1,357      
Initial cost of building and improvements 9,601      
Cost Capitalized Subsequent to Acquisition 1,090      
Carrying amount of land and land improvements 1,462      
Carrying amount of building and improvements 10,586      
Accumulated depreciation 1,315      
Seniors Housing Operating | White Marsh, 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 10,251      
Carrying amount of land and land improvements 10,251      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
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 3,483      
Carrying amount of land and land improvements 2,463      
Carrying amount of building and improvements 28,092      
Accumulated depreciation 9,738      
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 11,639      
Initial cost of land and land improvements 1,630      
Initial cost of building and improvements 12,001      
Cost Capitalized Subsequent to Acquisition 1,219      
Carrying amount of land and land improvements 1,840      
Carrying amount of building and improvements 13,010      
Accumulated depreciation 2,806      
Seniors Housing Operating | Wichita, KS 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,400      
Initial cost of building and improvements 11,000      
Cost Capitalized Subsequent to Acquisition 710      
Carrying amount of land and land improvements 1,400      
Carrying amount of building and improvements 11,710      
Accumulated depreciation 7,300      
Seniors Housing Operating | Wichita, KS 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 630      
Initial cost of building and improvements 19,747      
Cost Capitalized Subsequent to Acquisition 1,194      
Carrying amount of land and land improvements 630      
Carrying amount of building and improvements 20,941      
Accumulated depreciation 6,173      
Seniors Housing Operating | Wichita, KS 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 900      
Initial cost of building and improvements 10,134      
Cost Capitalized Subsequent to Acquisition 486      
Carrying amount of land and land improvements 900      
Carrying amount of building and improvements 10,620      
Accumulated depreciation 3,498      
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 11,514      
Initial cost of land and land improvements 1,309      
Initial cost of building and improvements 10,540      
Cost Capitalized Subsequent to Acquisition 753      
Carrying amount of land and land improvements 1,332      
Carrying amount of building and improvements 11,270      
Accumulated depreciation 2,367      
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 2,864      
Carrying amount of land and land improvements 1,326      
Carrying amount of building and improvements 25,916      
Accumulated depreciation 9,161      
Seniors Housing Operating | Wilmington, NC 1        
SEC Schedule, 12-28, Real 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 28,202      
Cost Capitalized Subsequent to Acquisition 499      
Carrying amount of land and land improvements 1,550      
Carrying amount of building and improvements 28,689      
Accumulated depreciation 4,117      
Seniors Housing Operating | Wilmington, NC 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 26,019      
Initial cost of land and land improvements 6,427      
Initial cost of building and improvements 35,832      
Cost Capitalized Subsequent to Acquisition 960      
Carrying amount of land and land improvements 6,427      
Carrying amount of building and improvements 36,792      
Accumulated depreciation 210      
Seniors Housing Operating | Wilmington, NC 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 7,974      
Initial cost of building and improvements 93,012      
Cost Capitalized Subsequent to Acquisition 9,051      
Carrying amount of land and land improvements 7,974      
Carrying amount of building and improvements 102,063      
Accumulated depreciation 1,341      
Seniors Housing Operating | Wimbledon, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 25,531      
Carrying amount of land and land improvements 7,684      
Carrying amount of building and improvements 17,847      
Accumulated depreciation 4,121      
Seniors Housing Operating | Winchester, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 6,009      
Initial cost of building and improvements 29,405      
Cost Capitalized Subsequent to Acquisition 2,938      
Carrying amount of land and land improvements 6,206      
Carrying amount of building and improvements 32,146      
Accumulated depreciation 11,633      
Seniors Housing Operating | Winnipeg, MB 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 22,557      
Initial cost of land and land improvements 1,276      
Initial cost of building and improvements 21,732      
Cost Capitalized Subsequent to Acquisition 3,208      
Carrying amount of land and land improvements 1,607      
Carrying amount of building and improvements 24,609      
Accumulated depreciation 8,011      
Seniors Housing Operating | Winnipeg, MB 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 10,314      
Initial cost of land and land improvements 1,317      
Initial cost of building and improvements 15,609      
Cost Capitalized Subsequent to Acquisition 3,465      
Carrying amount of land and land improvements 1,401      
Carrying amount of building and improvements 18,990      
Accumulated depreciation 5,546      
Seniors Housing Operating | Woking, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 16,268      
Carrying amount of land and land improvements 2,988      
Carrying amount of building and improvements 13,280      
Accumulated depreciation 2,373      
Seniors Housing Operating | Wolverhampton, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 13,466      
Carrying amount of land and land improvements 3,033      
Carrying amount of building and improvements 10,433      
Accumulated depreciation 4,332      
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 1,774      
Carrying amount of land and land improvements 3,456      
Carrying amount of building and improvements 22,196      
Accumulated depreciation 8,138      
Seniors Housing Operating | Wooster, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 13,582      
Initial cost of land and land improvements 1,560      
Initial cost of building and improvements 22,555      
Cost Capitalized Subsequent to Acquisition 2,093      
Carrying amount of land and land improvements 1,560      
Carrying amount of building and improvements 24,648      
Accumulated depreciation 2,758      
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 25,319      
Cost Capitalized Subsequent to Acquisition 2,591      
Carrying amount of land and land improvements 3,380      
Carrying amount of building and improvements 27,903      
Accumulated depreciation 4,322      
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 10,707      
Cost Capitalized Subsequent to Acquisition 618      
Carrying amount of land and land improvements 1,195      
Carrying amount of building and improvements 11,234      
Accumulated depreciation 1,589      
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 3,572      
Carrying amount of land and land improvements 4,074      
Carrying amount of building and improvements 53,567      
Accumulated depreciation 17,995      
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 2,388      
Initial cost of land and land improvements 463      
Initial cost of building and improvements 8,760      
Cost Capitalized Subsequent to Acquisition 1,047      
Carrying amount of land and land improvements 487      
Carrying amount of building and improvements 9,783      
Accumulated depreciation 3,208      
Seniors Housing Operating | Zionsville, IN 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,610      
Initial cost of building and improvements 22,400      
Cost Capitalized Subsequent to Acquisition 2,153      
Carrying amount of land and land improvements 1,610      
Carrying amount of building and improvements 24,553      
Accumulated depreciation 8,261      
Seniors Housing Operating | Zionsville, IN 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,162      
Initial cost of building and improvements 33,238      
Cost Capitalized Subsequent to Acquisition 252      
Carrying amount of land and land improvements 2,162      
Carrying amount of building and improvements 33,490      
Accumulated depreciation $ 2,880