XML 145 R123.htm IDEA: XBRL DOCUMENT v3.25.0.1
Schedule III - Real Estate and Accumulated Depreciation - Seniors Housing (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances $ 2,467,223      
Initial cost of land and land improvements 4,548,384      
Initial cost of building and improvements 37,700,252      
Cost Capitalized Subsequent to Acquisition 9,187,992      
Carrying amount of land and land improvements 5,271,418      
Carrying amount of building and improvements 46,028,087      
Accumulated depreciation 10,626,263 $ 9,274,814 $ 8,075,733 $ 6,910,114
Seniors Housing Operating        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 2,042,580      
Initial cost of land and land improvements 2,691,130      
Initial cost of building and improvements 23,420,021      
Cost Capitalized Subsequent to Acquisition 6,501,381      
Carrying amount of land and land improvements 3,197,957      
Carrying amount of building and improvements 29,362,814      
Accumulated depreciation 6,807,019      
Seniors Housing Operating | Aberdeen, 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 4,155      
Cost Capitalized Subsequent to Acquisition 90      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,245      
Accumulated depreciation 554      
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 2,193      
Initial cost of building and improvements 12,833      
Cost Capitalized Subsequent to Acquisition 57      
Carrying amount of land and land improvements 2,104      
Carrying amount of building and improvements 12,979      
Accumulated depreciation 2,731      
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 425      
Carrying amount of land and land improvements 1,181      
Carrying amount of building and improvements 5,200      
Accumulated depreciation 966      
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 1,707      
Carrying amount of land and land improvements 2,256      
Carrying amount of building and improvements 23,203      
Accumulated depreciation 2,011      
Seniors Housing Operating | Akron, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 6,250      
Carrying amount of land and land improvements 991      
Carrying amount of building and improvements 5,259      
Accumulated depreciation 297      
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 2,897      
Carrying amount of land and land improvements 176      
Carrying amount of building and improvements 9,094      
Accumulated depreciation 3,759      
Seniors Housing Operating | Albuquerque, NM        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 21,112      
Initial cost of land and land improvements 3,847      
Initial cost of building and improvements 29,821      
Cost Capitalized Subsequent to Acquisition 25      
Carrying amount of land and land improvements 3,847      
Carrying amount of building and improvements 29,846      
Accumulated depreciation 761      
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 1,394      
Carrying amount of land and land improvements 8,305      
Carrying amount of building and improvements 52,283      
Accumulated depreciation 9,558      
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 61,099      
Carrying amount of land and land improvements 8,700      
Carrying amount of building and improvements 52,399      
Accumulated depreciation 4,037      
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 17,853      
Carrying amount of land and land improvements 12,439      
Carrying amount of building and improvements 38,792      
Accumulated depreciation 11,842      
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 141      
Carrying amount of land and land improvements 863      
Carrying amount of building and improvements 6,388      
Accumulated depreciation 748      
Seniors Housing Operating | Allen, 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 5,017      
Carrying amount of land and land improvements 5,017      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | Allentown, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,821      
Initial cost of building and improvements 10,405      
Cost Capitalized Subsequent to Acquisition 173      
Carrying amount of land and land improvements 1,821      
Carrying amount of building and improvements 10,578      
Accumulated depreciation 936      
Seniors Housing Operating | Alma, 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 1,267      
Initial cost of building and improvements 6,543      
Cost Capitalized Subsequent to Acquisition 1,108      
Carrying amount of land and land improvements 1,370      
Carrying amount of building and improvements 7,548      
Accumulated depreciation 1,178      
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 3,157      
Initial cost of building and improvements 18,735      
Cost Capitalized Subsequent to Acquisition 9,637      
Carrying amount of land and land improvements 4,297      
Carrying amount of building and improvements 27,232      
Accumulated depreciation 9,641      
Seniors Housing Operating | Amarillo, 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 719      
Initial cost of building and improvements 11,591      
Cost Capitalized Subsequent to Acquisition 1,394      
Carrying amount of land and land improvements 754      
Carrying amount of building and improvements 12,950      
Accumulated depreciation 2,688      
Seniors Housing Operating | Amarillo, 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 1,273      
Initial cost of building and improvements 11,791      
Cost Capitalized Subsequent to Acquisition 74      
Carrying amount of land and land improvements 1,273      
Carrying amount of building and improvements 11,865      
Accumulated depreciation 2,756      
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 3,187      
Carrying amount of land and land improvements 338      
Carrying amount of building and improvements 12,049      
Accumulated depreciation 3,801      
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 267      
Carrying amount of land and land improvements 1,170      
Carrying amount of building and improvements 11,759      
Accumulated depreciation 2,733      
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 435      
Initial cost of building and improvements 4,085      
Cost Capitalized Subsequent to Acquisition 1,094      
Carrying amount of land and land improvements 467      
Carrying amount of building and improvements 5,147      
Accumulated depreciation 1,683      
Seniors Housing Operating | Angmering, 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 3,518      
Initial cost of building and improvements 18,957      
Cost Capitalized Subsequent to Acquisition 5      
Carrying amount of land and land improvements 3,518      
Carrying amount of building and improvements 18,962      
Accumulated depreciation 105      
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 13,081      
Initial cost of land and land improvements 12,683      
Initial cost of building and improvements 53,160      
Cost Capitalized Subsequent to Acquisition 16,252      
Carrying amount of land and land improvements 13,577      
Carrying amount of building and improvements 68,518      
Accumulated depreciation 12,888      
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 571      
Carrying amount of land and land improvements 1,164      
Carrying amount of building and improvements 10,806      
Accumulated depreciation 2,842      
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 1,567      
Carrying amount of land and land improvements 2,547      
Carrying amount of building and improvements 14,888      
Accumulated depreciation 2,530      
Seniors Housing Operating | Anna, 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 997      
Carrying amount of land and land improvements 219      
Carrying amount of building and improvements 778      
Accumulated depreciation 4      
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 7,124      
Carrying amount of land and land improvements 486      
Carrying amount of building and improvements 23,757      
Accumulated depreciation 9,360      
Seniors Housing Operating | Arcadia, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 13,658      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 13,658      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | Arlington, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 32,159      
Initial cost of land and land improvements 3,169      
Initial cost of building and improvements 47,319      
Cost Capitalized Subsequent to Acquisition 2      
Carrying amount of land and land improvements 3,169      
Carrying amount of building and improvements 47,321      
Accumulated depreciation 429      
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 8,437      
Carrying amount of land and land improvements 1,660      
Carrying amount of building and improvements 45,832      
Accumulated depreciation 19,134      
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 2,941      
Carrying amount of land and land improvements 1,023      
Carrying amount of building and improvements 15,815      
Accumulated depreciation 2,438      
Seniors Housing Operating | Arlington, 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 2,112      
Initial cost of building and improvements 14,785      
Cost Capitalized Subsequent to Acquisition 144      
Carrying amount of land and land improvements 2,112      
Carrying amount of building and improvements 14,929      
Accumulated depreciation 1,361      
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 19,600      
Carrying amount of land and land improvements 8,411      
Carrying amount of building and improvements 50,772      
Accumulated depreciation 23,346      
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 2,338      
Cost Capitalized Subsequent to Acquisition 8,523      
Carrying amount of land and land improvements 208      
Carrying amount of building and improvements 10,653      
Accumulated depreciation 2,912      
Seniors Housing Operating | Armadale by Whitburn, 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 425      
Cost Capitalized Subsequent to Acquisition 8      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 433      
Accumulated depreciation 15      
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 757      
Initial cost of building and improvements 6,037      
Cost Capitalized Subsequent to Acquisition 667      
Carrying amount of land and land improvements 764      
Carrying amount of building and improvements 6,697      
Accumulated depreciation 2,549      
Seniors Housing Operating | Ashford, 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 713      
Cost Capitalized Subsequent to Acquisition 22      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 735      
Accumulated depreciation 86      
Seniors Housing Operating | Ashford, 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 3,435      
Cost Capitalized Subsequent to Acquisition 30      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,465      
Accumulated depreciation 455      
Seniors Housing Operating | Athens, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 12,793      
Initial cost of building and improvements 43,562      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 12,793      
Carrying amount of building and improvements 43,562      
Accumulated depreciation 810      
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 6,539      
Carrying amount of land and land improvements 2,080      
Carrying amount of building and improvements 21,431      
Accumulated depreciation 15,600      
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 3,084      
Carrying amount of land and land improvements 2,206      
Carrying amount of building and improvements 23,581      
Accumulated depreciation 8,256      
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 9,384      
Initial cost of land and land improvements 1,176      
Initial cost of building and improvements 14,371      
Cost Capitalized Subsequent to Acquisition 998      
Carrying amount of land and land improvements 1,183      
Carrying amount of building and improvements 15,362      
Accumulated depreciation 1,874      
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 1,312      
Carrying amount of land and land improvements 1,590      
Carrying amount of building and improvements 16,540      
Accumulated depreciation 1,642      
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 5,610      
Carrying amount of land and land improvements 885      
Carrying amount of building and improvements 15,125      
Accumulated depreciation 9,064      
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 3,506      
Carrying amount of land and land improvements 1,574      
Carrying amount of building and improvements 24,905      
Accumulated depreciation 7,189      
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 4,302      
Carrying amount of land and land improvements 4,200      
Carrying amount of building and improvements 79,152      
Accumulated depreciation 21,641      
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 1,797      
Carrying amount of land and land improvements 4,877      
Carrying amount of building and improvements 22,383      
Accumulated depreciation 4,989      
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 5,091      
Carrying amount of land and land improvements 1,830      
Carrying amount of building and improvements 19,561      
Accumulated depreciation 6,547      
Seniors Housing Operating | Bad Axe, 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 1,317      
Initial cost of building and improvements 5,972      
Cost Capitalized Subsequent to Acquisition 128      
Carrying amount of land and land improvements 1,347      
Carrying amount of building and improvements 6,070      
Accumulated depreciation 1,202      
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 3,689      
Initial cost of building and improvements 22,226      
Cost Capitalized Subsequent to Acquisition 15,328      
Carrying amount of land and land improvements 5,033      
Carrying amount of building and improvements 36,210      
Accumulated depreciation 16,141      
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 2,731      
Initial cost of building and improvements 24,175      
Cost Capitalized Subsequent to Acquisition 6,672      
Carrying amount of land and land improvements 2,578      
Carrying amount of building and improvements 31,000      
Accumulated depreciation 3,313      
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 23,393      
Carrying amount of land and land improvements 2,822      
Carrying amount of building and improvements 20,571      
Accumulated depreciation 3,230      
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 4,053      
Carrying amount of land and land improvements 1,153      
Carrying amount of building and improvements 19,153      
Accumulated depreciation 3,027      
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 435      
Carrying amount of land and land improvements 5,557      
Carrying amount of building and improvements 18,319      
Accumulated depreciation 2,586      
Seniors Housing Operating | Banbury, 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 3,167      
Cost Capitalized Subsequent to Acquisition 20      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,187      
Accumulated depreciation 413      
Seniors Housing Operating | Barnard Castle, 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 306      
Initial cost of building and improvements 2,636      
Cost Capitalized Subsequent to Acquisition 12      
Carrying amount of land and land improvements 306      
Carrying amount of building and improvements 2,648      
Accumulated depreciation 129      
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 18,985      
Initial cost of building and improvements 38,013      
Cost Capitalized Subsequent to Acquisition 6,181      
Carrying amount of land and land improvements 20,502      
Carrying amount of building and improvements 42,677      
Accumulated depreciation 3,607      
Seniors Housing Operating | Barnum, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 111      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 111      
Accumulated depreciation 8      
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 1,286      
Carrying amount of land and land improvements 2,380      
Carrying amount of building and improvements 13,246      
Accumulated depreciation 2,848      
Seniors Housing Operating | Basingstoke, 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 2,565      
Initial cost of building and improvements 14,139      
Cost Capitalized Subsequent to Acquisition 7,615      
Carrying amount of land and land improvements 3,471      
Carrying amount of building and improvements 20,848      
Accumulated depreciation 6,205      
Seniors Housing Operating | Basingstoke, 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 3,644      
Cost Capitalized Subsequent to Acquisition 11      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,655      
Accumulated depreciation 467      
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 3,444      
Carrying amount of land and land improvements 2,467      
Carrying amount of building and improvements 41,043      
Accumulated depreciation 14,593      
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 3,625      
Initial cost of building and improvements 24,028      
Cost Capitalized Subsequent to Acquisition 19,334      
Carrying amount of land and land improvements 4,946      
Carrying amount of building and improvements 42,041      
Accumulated depreciation 19,552      
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 2,631      
Initial cost of building and improvements 11,589      
Cost Capitalized Subsequent to Acquisition 875      
Carrying amount of land and land improvements 2,642      
Carrying amount of building and improvements 12,453      
Accumulated depreciation 2,637      
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 2,337      
Carrying amount of land and land improvements 955      
Carrying amount of building and improvements 31,608      
Accumulated depreciation 11,365      
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 759      
Carrying amount of land and land improvements 1,693      
Carrying amount of building and improvements 7,388      
Accumulated depreciation 1,388      
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 2,882      
Carrying amount of land and land improvements 3,241      
Carrying amount of building and improvements 26,212      
Accumulated depreciation 2,591      
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 611      
Carrying amount of land and land improvements 1,246      
Carrying amount of building and improvements 7,014      
Accumulated depreciation 1,303      
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 4,140      
Initial cost of building and improvements 37,899      
Cost Capitalized Subsequent to Acquisition 17,858      
Carrying amount of land and land improvements 5,648      
Carrying amount of building and improvements 54,249      
Accumulated depreciation 19,028      
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 899      
Initial cost of building and improvements 13,683      
Cost Capitalized Subsequent to Acquisition 3,455      
Carrying amount of land and land improvements 1,175      
Carrying amount of building and improvements 16,862      
Accumulated depreciation 6,450      
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 216      
Carrying amount of land and land improvements 1,189      
Carrying amount of building and improvements 13,456      
Accumulated depreciation 1,143      
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 20      
Carrying amount of land and land improvements 1,018      
Carrying amount of building and improvements 11,283      
Accumulated depreciation 2,027      
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 1,062      
Initial cost of building and improvements 24,979      
Cost Capitalized Subsequent to Acquisition 29,550      
Carrying amount of land and land improvements 20,303      
Carrying amount of building and improvements 35,288      
Accumulated depreciation 3,732      
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 18,024      
Initial cost of land and land improvements 3,565      
Initial cost of building and improvements 29,929      
Cost Capitalized Subsequent to Acquisition 1,933      
Carrying amount of land and land improvements 3,575      
Carrying amount of building and improvements 31,852      
Accumulated depreciation 3,814      
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 3,618      
Carrying amount of land and land improvements 1,838      
Carrying amount of building and improvements 24,684      
Accumulated depreciation 5,831      
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 4,526      
Carrying amount of land and land improvements 2,889      
Carrying amount of building and improvements 23,441      
Accumulated depreciation 9,480      
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 41,977      
Carrying amount of land and land improvements 6,259      
Carrying amount of building and improvements 35,718      
Accumulated depreciation 2,994      
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 3,334      
Carrying amount of land and land improvements 6,408      
Carrying amount of building and improvements 12,865      
Accumulated depreciation 1,643      
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 2,333      
Carrying amount of land and land improvements 20,170      
Carrying amount of building and improvements 46,565      
Accumulated depreciation 14,366      
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 5,084      
Carrying amount of land and land improvements 1,507      
Carrying amount of building and improvements 24,938      
Accumulated depreciation 10,078      
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 2,764      
Carrying amount of land and land improvements 1,290      
Carrying amount of building and improvements 19,056      
Accumulated depreciation 3,766      
Seniors Housing Operating | Bellingham, WA 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 26,882      
Initial cost of land and land improvements 4,451      
Initial cost of building and improvements 42,778      
Cost Capitalized Subsequent to Acquisition 21      
Carrying amount of land and land improvements 4,451      
Carrying amount of building and improvements 42,799      
Accumulated depreciation 1,017      
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 4,190      
Carrying amount of land and land improvements 188      
Carrying amount of building and improvements 39,302      
Accumulated depreciation 14,447      
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 127      
Carrying amount of land and land improvements 1,658      
Carrying amount of building and improvements 12,918      
Accumulated depreciation 1,336      
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 170      
Carrying amount of land and land improvements 1,626      
Carrying amount of building and improvements 13,187      
Accumulated depreciation 2,783      
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 3,626      
Carrying amount of land and land improvements 3,486      
Carrying amount of building and improvements 16,403      
Accumulated depreciation 2,883      
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 4,376      
Carrying amount of land and land improvements 3      
Carrying amount of building and improvements 49,682      
Accumulated depreciation 17,080      
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 70,140      
Carrying amount of land and land improvements 3,532      
Carrying amount of building and improvements 66,608      
Accumulated depreciation 10,202      
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 45      
Cost Capitalized Subsequent to Acquisition 2,438      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,483      
Accumulated depreciation 1,004      
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 212      
Cost Capitalized Subsequent to Acquisition 657      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 869      
Accumulated depreciation 577      
Seniors Housing Operating | Beverley, 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 3,848      
Initial cost of building and improvements 22,590      
Cost Capitalized Subsequent to Acquisition 100      
Carrying amount of land and land improvements 3,848      
Carrying amount of building and improvements 22,690      
Accumulated depreciation 194      
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 20,734      
Carrying amount of land and land improvements 5,879      
Carrying amount of building and improvements 31,112      
Accumulated depreciation 1,922      
Seniors Housing Operating | Billingham, 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 2,004      
Cost Capitalized Subsequent to Acquisition 8      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,012      
Accumulated depreciation 246      
Seniors Housing Operating | Billings, MT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 19,635      
Initial cost of land and land improvements 1,826      
Initial cost of building and improvements 29,634      
Cost Capitalized Subsequent to Acquisition 11      
Carrying amount of land and land improvements 1,826      
Carrying amount of building and improvements 29,645      
Accumulated depreciation 725      
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 3,049      
Carrying amount of land and land improvements 3,110      
Carrying amount of building and improvements 24,561      
Accumulated depreciation 3,425      
Seniors Housing Operating | Blaine, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 11,813      
Carrying amount of land and land improvements 1,780      
Carrying amount of building and improvements 10,033      
Accumulated depreciation 432      
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 1,625      
Initial cost of building and improvements 6,967      
Cost Capitalized Subsequent to Acquisition 4,236      
Carrying amount of land and land improvements 2,085      
Carrying amount of building and improvements 10,743      
Accumulated depreciation 3,852      
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 2,505      
Carrying amount of land and land improvements 2,204      
Carrying amount of building and improvements 37,963      
Accumulated depreciation 13,381      
Seniors Housing Operating | Blue Springs, 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 3,995      
Initial cost of building and improvements 31,501      
Cost Capitalized Subsequent to Acquisition 17,127      
Carrying amount of land and land improvements 4,920      
Carrying amount of building and improvements 47,703      
Accumulated depreciation 3,708      
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 48,525      
Carrying amount of land and land improvements 7,278      
Carrying amount of building and improvements 159,059      
Accumulated depreciation 47,856      
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 7,391      
Carrying amount of land and land improvements 2,224      
Carrying amount of building and improvements 22,625      
Accumulated depreciation 6,165      
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 439      
Carrying amount of land and land improvements 1,626      
Carrying amount of building and improvements 10,906      
Accumulated depreciation 2,158      
Seniors Housing Operating | Boise, ID 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 12,040      
Carrying amount of land and land improvements 12,040      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | Boise, ID 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 3,176      
Initial cost of building and improvements 27,030      
Cost Capitalized Subsequent to Acquisition 39      
Carrying amount of land and land improvements 3,176      
Carrying amount of building and improvements 27,069      
Accumulated depreciation 639      
Seniors Housing Operating | Bolingbrook, 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 3,568      
Initial cost of building and improvements 25,211      
Cost Capitalized Subsequent to Acquisition 4,268      
Carrying amount of land and land improvements 3,568      
Carrying amount of building and improvements 29,479      
Accumulated depreciation 4,424      
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 161      
Carrying amount of land and land improvements 2,009      
Carrying amount of building and improvements 31,359      
Accumulated depreciation 3,208      
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 19,617      
Carrying amount of land and land improvements 5,653      
Carrying amount of building and improvements 36,647      
Accumulated depreciation 2,415      
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 7,832      
Carrying amount of land and land improvements 1,350      
Carrying amount of building and improvements 21,271      
Accumulated depreciation 8,919      
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 3,647      
Carrying amount of land and land improvements 3,246      
Carrying amount of building and improvements 30,853      
Accumulated depreciation 12,667      
Seniors Housing Operating | Bournville, 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 15,270      
Carrying amount of land and land improvements 1,502      
Carrying amount of building and improvements 13,768      
Accumulated depreciation 3,211      
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 36,313      
Carrying amount of land and land improvements 3,775      
Carrying amount of building and improvements 32,538      
Accumulated depreciation 2,109      
Seniors Housing Operating | Bracknell, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 4,092      
Cost Capitalized Subsequent to Acquisition 77      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,169      
Accumulated depreciation 536      
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 455      
Carrying amount of land and land improvements 480      
Carrying amount of building and improvements 10,408      
Accumulated depreciation 3,416      
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 2,337      
Carrying amount of land and land improvements 4,692      
Carrying amount of building and improvements 13,511      
Accumulated depreciation 3,092      
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 2,298      
Carrying amount of land and land improvements 261      
Carrying amount of building and improvements 43,327      
Accumulated depreciation 15,620      
Seniors Housing Operating | Bramhall, 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 3,250      
Initial cost of building and improvements 18,609      
Cost Capitalized Subsequent to Acquisition 9,430      
Carrying amount of land and land improvements 4,433      
Carrying amount of building and improvements 26,856      
Accumulated depreciation 10,219      
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 9,324      
Initial cost of building and improvements 54,858      
Cost Capitalized Subsequent to Acquisition 5,967      
Carrying amount of land and land improvements 9,855      
Carrying amount of building and improvements 60,294      
Accumulated depreciation 18,371      
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 3,997      
Carrying amount of land and land improvements 1,220      
Carrying amount of building and improvements 14,238      
Accumulated depreciation 5,472      
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 3,165      
Carrying amount of land and land improvements 6,302      
Carrying amount of building and improvements 83,633      
Accumulated depreciation 7,749      
Seniors Housing Operating | Bremerton, 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 2,417      
Initial cost of building and improvements 22,627      
Cost Capitalized Subsequent to Acquisition 4,347      
Carrying amount of land and land improvements 2,417      
Carrying amount of building and improvements 26,974      
Accumulated depreciation 5,371      
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 6,102      
Carrying amount of land and land improvements 4,602      
Carrying amount of building and improvements 38,696      
Accumulated depreciation 6,261      
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 8,412      
Initial cost of building and improvements 45,198      
Cost Capitalized Subsequent to Acquisition 3,697      
Carrying amount of land and land improvements 8,664      
Carrying amount of building and improvements 48,643      
Accumulated depreciation 11,193      
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 2,757      
Carrying amount of land and land improvements 1,327      
Carrying amount of building and improvements 19,972      
Accumulated depreciation 7,912      
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 6,880      
Carrying amount of land and land improvements 817      
Carrying amount of building and improvements 23,878      
Accumulated depreciation 8,090      
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 4,998      
Carrying amount of land and land improvements 1,917      
Carrying amount of building and improvements 53,012      
Accumulated depreciation 19,215      
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 14,611      
Initial cost of land and land improvements 1,567      
Initial cost of building and improvements 20,541      
Cost Capitalized Subsequent to Acquisition 2,503      
Carrying amount of land and land improvements 1,586      
Carrying amount of building and improvements 23,025      
Accumulated depreciation 4,069      
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 4,381      
Carrying amount of land and land improvements 1,642      
Carrying amount of building and improvements 27,735      
Accumulated depreciation 9,889      
Seniors Housing Operating | Brockton, 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 2,682      
Initial cost of building and improvements 35,075      
Cost Capitalized Subsequent to Acquisition 410      
Carrying amount of land and land improvements 2,682      
Carrying amount of building and improvements 35,485      
Accumulated depreciation 2,270      
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 0      
Initial cost of land and land improvements 445      
Initial cost of building and improvements 6,840      
Cost Capitalized Subsequent to Acquisition 1,210      
Carrying amount of land and land improvements 472      
Carrying amount of building and improvements 8,023      
Accumulated depreciation 2,456      
Seniors Housing Operating | Bromsgrove, 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 639      
Initial cost of building and improvements 21,659      
Cost Capitalized Subsequent to Acquisition 30      
Carrying amount of land and land improvements 639      
Carrying amount of building and improvements 21,689      
Accumulated depreciation 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 1,929      
Carrying amount of land and land improvements 1,300      
Carrying amount of building and improvements 12,789      
Accumulated depreciation 4,164      
Seniors Housing Operating | Brookline, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 164,400      
Carrying amount of land and land improvements 16,502      
Carrying amount of building and improvements 147,898      
Accumulated depreciation 369      
Seniors Housing Operating | Brookline, 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 3,799      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
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 17,266      
Carrying amount of land and land improvements 10,956      
Carrying amount of building and improvements 54,997      
Accumulated depreciation 29,747      
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 29,202      
Carrying amount of land and land improvements 2,566      
Carrying amount of building and improvements 26,636      
Accumulated depreciation 3,913      
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 6,946      
Initial cost of land and land improvements 5,029      
Initial cost of building and improvements 29,129      
Cost Capitalized Subsequent to Acquisition 3,858      
Carrying amount of land and land improvements 5,183      
Carrying amount of building and improvements 32,833      
Accumulated depreciation 11,862      
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 1,155      
Carrying amount of land and land improvements 1,474      
Carrying amount of building and improvements 19,115      
Accumulated depreciation 2,747      
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 6,724      
Initial cost of land and land improvements 1,117      
Initial cost of building and improvements 11,022      
Cost Capitalized Subsequent to Acquisition 827      
Carrying amount of land and land improvements 1,117      
Carrying amount of building and improvements 11,849      
Accumulated depreciation 1,514      
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 5,802      
Carrying amount of land and land improvements 2,850      
Carrying amount of building and improvements 54,931      
Accumulated depreciation 20,443      
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 7,752      
Carrying amount of land and land improvements 4,940      
Carrying amount of building and improvements 51,218      
Accumulated depreciation 19,525      
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 0      
Initial cost of land and land improvements 3,610      
Initial cost of building and improvements 50,817      
Cost Capitalized Subsequent to Acquisition 8,810      
Carrying amount of land and land improvements 3,610      
Carrying amount of building and improvements 59,627      
Accumulated depreciation 14,375      
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 53,058      
Carrying amount of land and land improvements 2,616      
Carrying amount of building and improvements 50,442      
Accumulated depreciation 7,824      
Seniors Housing Operating | Burleson, 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 3,150      
Initial cost of building and improvements 10,437      
Cost Capitalized Subsequent to Acquisition 923      
Carrying amount of land and land improvements 3,150      
Carrying amount of building and improvements 11,360      
Accumulated depreciation 3,303      
Seniors Housing Operating | Burleson, 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 7,656      
Initial cost of building and improvements 14,988      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 7,656      
Carrying amount of building and improvements 14,988      
Accumulated depreciation 662      
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 805      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 63,591      
Accumulated depreciation 15,153      
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 3,312      
Carrying amount of land and land improvements 2,615      
Carrying amount of building and improvements 37,494      
Accumulated depreciation 13,663      
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 15,030      
Cost Capitalized Subsequent to Acquisition 1,966      
Carrying amount of land and land improvements 877      
Carrying amount of building and improvements 16,996      
Accumulated depreciation 3,877      
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 7,622      
Cost Capitalized Subsequent to Acquisition 2,311      
Carrying amount of land and land improvements 768      
Carrying amount of building and improvements 9,933      
Accumulated depreciation 2,429      
Seniors Housing Operating | Bury St Edmunds, 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 2,769      
Cost Capitalized Subsequent to Acquisition 103      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,872      
Accumulated depreciation 367      
Seniors Housing Operating | Bury St Edmunds, 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 3,771      
Cost Capitalized Subsequent to Acquisition 140      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,911      
Accumulated depreciation 498      
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 12,197      
Initial cost of building and improvements 35,065      
Cost Capitalized Subsequent to Acquisition 1,753      
Carrying amount of land and land improvements 12,457      
Carrying amount of building and improvements 36,558      
Accumulated depreciation 7,071      
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 2,070      
Carrying amount of land and land improvements 3,636      
Carrying amount of building and improvements 30,712      
Accumulated depreciation 1,654      
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 8,283      
Initial cost of land and land improvements 2,566      
Initial cost of building and improvements 37,831      
Cost Capitalized Subsequent to Acquisition 4,680      
Carrying amount of land and land improvements 2,704      
Carrying amount of building and improvements 42,373      
Accumulated depreciation 14,619      
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 15,670      
Initial cost of land and land improvements 3,152      
Initial cost of building and improvements 26,627      
Cost Capitalized Subsequent to Acquisition 4,987      
Carrying amount of land and land improvements 3,287      
Carrying amount of building and improvements 31,479      
Accumulated depreciation 10,201      
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 0      
Initial cost of land and land improvements 2,214      
Initial cost of building and improvements 34,143      
Cost Capitalized Subsequent to Acquisition 5,799      
Carrying amount of land and land improvements 2,306      
Carrying amount of building and improvements 39,850      
Accumulated depreciation 11,355      
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 9,799      
Initial cost of building and improvements 38,483      
Cost Capitalized Subsequent to Acquisition 712      
Carrying amount of land and land improvements 9,791      
Carrying amount of building and improvements 39,203      
Accumulated depreciation 8,230      
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 2,615      
Initial cost of building and improvements 5,651      
Cost Capitalized Subsequent to Acquisition 15,053      
Carrying amount of land and land improvements 4,774      
Carrying amount of building and improvements 18,545      
Accumulated depreciation 4,313      
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 3,405      
Carrying amount of land and land improvements 676      
Carrying amount of building and improvements 2,729      
Accumulated depreciation 592      
Seniors Housing Operating | Cambridge, 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 1,842      
Initial cost of building and improvements 23,073      
Cost Capitalized Subsequent to Acquisition 21      
Carrying amount of land and land improvements 1,842      
Carrying amount of building and improvements 23,094      
Accumulated depreciation 578      
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 5,622      
Carrying amount of land and land improvements 2,116      
Carrying amount of building and improvements 12,115      
Accumulated depreciation 2,993      
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 969      
Carrying amount of land and land improvements 720      
Carrying amount of building and improvements 9,566      
Accumulated depreciation 1,608      
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 411      
Carrying amount of land and land improvements 971      
Carrying amount of building and improvements 8,931      
Accumulated depreciation 1,210      
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 1,317      
Carrying amount of land and land improvements 760      
Carrying amount of building and improvements 20,185      
Accumulated depreciation 6,576      
Seniors Housing Operating | Cardiff, 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 2,374      
Initial cost of building and improvements 9,347      
Cost Capitalized Subsequent to Acquisition 10,241      
Carrying amount of land and land improvements 3,231      
Carrying amount of building and improvements 18,731      
Accumulated depreciation 7,489      
Seniors Housing Operating | Cardiff, 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 1,690      
Initial cost of building and improvements 20,496      
Cost Capitalized Subsequent to Acquisition 28      
Carrying amount of land and land improvements 1,690      
Carrying amount of building and improvements 20,524      
Accumulated depreciation 310      
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 7,857      
Carrying amount of land and land improvements 5,880      
Carrying amount of building and improvements 72,568      
Accumulated depreciation 29,384      
Seniors Housing Operating | Carmel, 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 2,222      
Initial cost of building and improvements 31,004      
Cost Capitalized Subsequent to Acquisition 1,050      
Carrying amount of land and land improvements 2,233      
Carrying amount of building and improvements 32,043      
Accumulated depreciation 3,663      
Seniors Housing Operating | Carmel, 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 2,766      
Initial cost of building and improvements 53,419      
Cost Capitalized Subsequent to Acquisition 986      
Carrying amount of land and land improvements 2,794      
Carrying amount of building and improvements 54,377      
Accumulated depreciation 8,428      
Seniors Housing Operating | Carmel, 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 2,894      
Initial cost of building and improvements 22,393      
Cost Capitalized Subsequent to Acquisition 117      
Carrying amount of land and land improvements 2,894      
Carrying amount of building and improvements 22,510      
Accumulated depreciation 1,544      
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 22,244      
Initial cost of land and land improvements 739      
Initial cost of building and improvements 7,698      
Cost Capitalized Subsequent to Acquisition 37,722      
Carrying amount of land and land improvements 2,440      
Carrying amount of building and improvements 43,719      
Accumulated depreciation 8,258      
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 407      
Carrying amount of land and land improvements 614      
Carrying amount of building and improvements 4,773      
Accumulated depreciation 867      
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 9,110      
Carrying amount of land and land improvements 1,730      
Carrying amount of building and improvements 64,158      
Accumulated depreciation 23,300      
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 2,261      
Carrying amount of land and land improvements 4,280      
Carrying amount of building and improvements 33,705      
Accumulated depreciation 9,942      
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 2,432      
Carrying amount of land and land improvements 2,537      
Carrying amount of building and improvements 11,591      
Accumulated depreciation 2,878      
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 1,474      
Carrying amount of land and land improvements 1,602      
Carrying amount of building and improvements 25,015      
Accumulated depreciation 2,428      
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 1,506      
Carrying amount of land and land improvements 742      
Carrying amount of building and improvements 46,744      
Accumulated depreciation 15,648      
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 11,990      
Carrying amount of land and land improvements 6,281      
Carrying amount of building and improvements 81,829      
Accumulated depreciation 21,251      
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 895      
Carrying amount of land and land improvements 1,293      
Carrying amount of building and improvements 10,791      
Accumulated depreciation 2,176      
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 62      
Carrying amount of land and land improvements 1,971      
Carrying amount of building and improvements 24,652      
Accumulated depreciation 3,066      
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 2,853      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 18,517      
Accumulated depreciation 4,491      
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 11,819      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 39,313      
Accumulated depreciation 13,480      
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 479      
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 3,267      
Carrying amount of land and land improvements 2,915      
Carrying amount of building and improvements 23,081      
Accumulated depreciation 3,193      
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 3,700      
Carrying amount of land and land improvements 4,833      
Carrying amount of building and improvements 46,400      
Accumulated depreciation 3,839      
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 29,559      
Carrying amount of land and land improvements 6,517      
Carrying amount of building and improvements 72,476      
Accumulated depreciation 5,050      
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 0      
Initial cost of land and land improvements 10,383      
Initial cost of building and improvements 55,090      
Cost Capitalized Subsequent to Acquisition 9      
Carrying amount of land and land improvements 10,383      
Carrying amount of building and improvements 55,099      
Accumulated depreciation 1,336      
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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 95,033      
Carrying amount of land and land improvements 17,902      
Carrying amount of building and improvements 77,131      
Accumulated depreciation 2,657      
Seniors Housing Operating | Charlotte, NC 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 5,279      
Initial cost of building and improvements 19,325      
Cost Capitalized Subsequent to Acquisition 1,442      
Carrying amount of land and land improvements 5,309      
Carrying amount of building and improvements 20,737      
Accumulated depreciation 2,510      
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 23,039      
Carrying amount of land and land improvements 5,287      
Carrying amount of building and improvements 113,871      
Accumulated depreciation 22,994      
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 210      
Carrying amount of land and land improvements 2,542      
Carrying amount of building and improvements 40,956      
Accumulated depreciation 3,867      
Seniors Housing Operating | Charlottesville, 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 3,910      
Initial cost of building and improvements 48,503      
Cost Capitalized Subsequent to Acquisition 234      
Carrying amount of land and land improvements 3,910      
Carrying amount of building and improvements 48,737      
Accumulated depreciation 1,311      
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 1,004      
Initial cost of building and improvements 11,396      
Cost Capitalized Subsequent to Acquisition 4,189      
Carrying amount of land and land improvements 1,126      
Carrying amount of building and improvements 15,463      
Accumulated depreciation 4,806      
Seniors Housing Operating | Chattanooga, 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 3,373      
Initial cost of building and improvements 15,791      
Cost Capitalized Subsequent to Acquisition 1,270      
Carrying amount of land and land improvements 3,374      
Carrying amount of building and improvements 17,060      
Accumulated depreciation 3,615      
Seniors Housing Operating | Chattanooga, 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 2,085      
Initial cost of building and improvements 11,837      
Cost Capitalized Subsequent to Acquisition 1,245      
Carrying amount of land and land improvements 2,106      
Carrying amount of building and improvements 13,061      
Accumulated depreciation 4,596      
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 7,399      
Carrying amount of land and land improvements 1,131      
Carrying amount of building and improvements 18,259      
Accumulated depreciation 7,983      
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 3,476      
Carrying amount of land and land improvements 2,421      
Carrying amount of building and improvements 36,562      
Accumulated depreciation 5,559      
Seniors Housing Operating | Chelmsford, 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 7,237      
Cost Capitalized Subsequent to Acquisition 13      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 7,250      
Accumulated depreciation 850      
Seniors Housing Operating | Chelsea, 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 1,139      
Cost Capitalized Subsequent to Acquisition 59      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,198      
Accumulated depreciation 126      
Seniors Housing Operating | Cheltenham, 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 4,192      
Cost Capitalized Subsequent to Acquisition 24      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,216      
Accumulated depreciation 550      
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 8,589      
Initial cost of building and improvements 23,242      
Cost Capitalized Subsequent to Acquisition 5,292      
Carrying amount of land and land improvements 9,390      
Carrying amount of building and improvements 27,733      
Accumulated depreciation 6,182      
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 3,027      
Carrying amount of land and land improvements 2,285      
Carrying amount of building and improvements 25,522      
Accumulated depreciation 4,679      
Seniors Housing Operating | Chesire, 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 2,814      
Initial cost of building and improvements 34,627      
Cost Capitalized Subsequent to Acquisition 175      
Carrying amount of land and land improvements 2,814      
Carrying amount of building and improvements 34,802      
Accumulated depreciation 826      
Seniors Housing Operating | Chester, 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 1,220      
Initial cost of building and improvements 2,670      
Cost Capitalized Subsequent to Acquisition 155      
Carrying amount of land and land improvements 1,220      
Carrying amount of building and improvements 2,825      
Accumulated depreciation 258      
Seniors Housing Operating | Chester, 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 3,574      
Cost Capitalized Subsequent to Acquisition 3      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,577      
Accumulated depreciation 472      
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 2,646      
Carrying amount of land and land improvements 1,946      
Carrying amount of building and improvements 50,923      
Accumulated depreciation 17,463      
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 3,441      
Carrying amount of land and land improvements 3,823      
Carrying amount of building and improvements 34,979      
Accumulated depreciation 4,255      
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 1,623      
Carrying amount of land and land improvements 3,054      
Carrying amount of building and improvements 39,163      
Accumulated depreciation 6,492      
Seniors Housing Operating | Chichester, 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 3,806      
Cost Capitalized Subsequent to Acquisition 38      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,844      
Accumulated depreciation 487      
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 2,863      
Carrying amount of land and land improvements 1,939      
Carrying amount of building and improvements 17,458      
Accumulated depreciation 3,209      
Seniors Housing Operating | Chingford, 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 2,483      
Initial cost of building and improvements 7,978      
Cost Capitalized Subsequent to Acquisition 4,076      
Carrying amount of land and land improvements 3,168      
Carrying amount of building and improvements 11,369      
Accumulated depreciation 3,268      
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 4,192      
Initial cost of building and improvements 32,126      
Cost Capitalized Subsequent to Acquisition 18,918      
Carrying amount of land and land improvements 5,702      
Carrying amount of building and improvements 49,534      
Accumulated depreciation 19,792      
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 236      
Carrying amount of land and land improvements 4,217      
Carrying amount of building and improvements 32,102      
Accumulated depreciation 6,270      
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 2,072      
Initial cost of building and improvements 22,163      
Cost Capitalized Subsequent to Acquisition 3,011      
Carrying amount of land and land improvements 2,216      
Carrying amount of building and improvements 25,030      
Accumulated depreciation 8,913      
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 1,943      
Initial cost of building and improvements 10,661      
Cost Capitalized Subsequent to Acquisition 5,744      
Carrying amount of land and land improvements 2,629      
Carrying amount of building and improvements 15,719      
Accumulated depreciation 5,102      
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 1,750      
Initial cost of building and improvements 11,287      
Cost Capitalized Subsequent to Acquisition 296      
Carrying amount of land and land improvements 1,792      
Carrying amount of building and improvements 11,541      
Accumulated depreciation 2,201      
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 1,933      
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 1,874      
Carrying amount of land and land improvements 3,352      
Carrying amount of building and improvements 54,734      
Accumulated depreciation 11,971      
Seniors Housing Operating | Cirencester Street, 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 822      
Cost Capitalized Subsequent to Acquisition 61      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 883      
Accumulated depreciation 35      
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 5,342      
Carrying amount of land and land improvements 2,300      
Carrying amount of building and improvements 37,218      
Accumulated depreciation 15,283      
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 1,343      
Carrying amount of land and land improvements 1,240      
Carrying amount of building and improvements 5,263      
Accumulated depreciation 1,311      
Seniors Housing Operating | Clacton-on-Sea, 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 1,422      
Initial cost of building and improvements 3,849      
Cost Capitalized Subsequent to Acquisition 15      
Carrying amount of land and land improvements 1,422      
Carrying amount of building and improvements 3,864      
Accumulated depreciation 236      
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 4,185      
Carrying amount of land and land improvements 2,553      
Carrying amount of building and improvements 13,990      
Accumulated depreciation 5,523      
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 1,316      
Initial cost of building and improvements 10,734      
Cost Capitalized Subsequent to Acquisition 1,048      
Carrying amount of land and land improvements 1,395      
Carrying amount of building and improvements 11,703      
Accumulated depreciation 2,794      
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 756      
Carrying amount of land and land improvements 1,748      
Carrying amount of building and improvements 5,638      
Accumulated depreciation 1,035      
Seniors Housing Operating | Cleburne, 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 520      
Initial cost of building and improvements 5,369      
Cost Capitalized Subsequent to Acquisition 2,027      
Carrying amount of land and land improvements 520      
Carrying amount of building and improvements 7,396      
Accumulated depreciation 2,903      
Seniors Housing Operating | Cleburne, 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 1,113      
Initial cost of building and improvements 10,560      
Cost Capitalized Subsequent to Acquisition 110      
Carrying amount of land and land improvements 1,113      
Carrying amount of building and improvements 10,670      
Accumulated depreciation 2,487      
Seniors Housing Operating | Cloquet, MN 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 340      
Initial cost of building and improvements 4,660      
Cost Capitalized Subsequent to Acquisition 545      
Carrying amount of land and land improvements 389      
Carrying amount of building and improvements 5,156      
Accumulated depreciation 1,780      
Seniors Housing Operating | Cloquet, MN 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 111      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 111      
Accumulated depreciation 8      
Seniors Housing Operating | Close, 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 224      
Cost Capitalized Subsequent to Acquisition 68      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 292      
Accumulated depreciation 10      
Seniors Housing Operating | Cobham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 474      
Cost Capitalized Subsequent to Acquisition 104      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 578      
Accumulated depreciation 41      
Seniors Housing Operating | Coeur d'Alene, ID        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 10,104      
Initial cost of land and land improvements 4,359      
Initial cost of building and improvements 21,700      
Cost Capitalized Subsequent to Acquisition 28      
Carrying amount of land and land improvements 4,359      
Carrying amount of building and improvements 21,728      
Accumulated depreciation 572      
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 3,825      
Carrying amount of land and land improvements 2,576      
Carrying amount of building and improvements 29,881      
Accumulated depreciation 11,228      
Seniors Housing Operating | Colchester, 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 1,520      
Initial cost of building and improvements 5,641      
Cost Capitalized Subsequent to Acquisition 22      
Carrying amount of land and land improvements 1,520      
Carrying amount of building and improvements 5,663      
Accumulated depreciation 288      
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 138      
Carrying amount of land and land improvements 1,050      
Carrying amount of building and improvements 17,220      
Accumulated depreciation 3,726      
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 42,373      
Carrying amount of land and land improvements 2,358      
Carrying amount of building and improvements 40,015      
Accumulated depreciation 4,762      
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 2,579      
Carrying amount of land and land improvements 1,045      
Carrying amount of building and improvements 17,090      
Accumulated depreciation 6,639      
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 2,039      
Carrying amount of land and land improvements 1,167      
Carrying amount of building and improvements 17,524      
Accumulated depreciation 1,821      
Seniors Housing Operating | Colorado Springs, CO 3        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 23,687      
Initial cost of land and land improvements 4,201      
Initial cost of building and improvements 32,999      
Cost Capitalized Subsequent to Acquisition 7      
Carrying amount of land and land improvements 4,201      
Carrying amount of building and improvements 33,006      
Accumulated depreciation 860      
Seniors Housing Operating | Columbia Heights, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 825      
Initial cost of building and improvements 14,175      
Cost Capitalized Subsequent to Acquisition 456      
Carrying amount of land and land improvements 861      
Carrying amount of building and improvements 14,595      
Accumulated depreciation 4,997      
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 1,583      
Carrying amount of land and land improvements 610      
Carrying amount of building and improvements 4,773      
Accumulated depreciation 1,468      
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 2,040      
Carrying amount of land and land improvements 1,600      
Carrying amount of building and improvements 14,219      
Accumulated depreciation 2,837      
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 294      
Carrying amount of land and land improvements 925      
Carrying amount of building and improvements 7,397      
Accumulated depreciation 995      
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 12,212      
Initial cost of land and land improvements 1,547      
Initial cost of building and improvements 17,126      
Cost Capitalized Subsequent to Acquisition 1,374      
Carrying amount of land and land improvements 1,555      
Carrying amount of building and improvements 18,492      
Accumulated depreciation 2,758      
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 0      
Initial cost of land and land improvements 2,825      
Initial cost of building and improvements 21,636      
Cost Capitalized Subsequent to Acquisition 1,536      
Carrying amount of land and land improvements 2,825      
Carrying amount of building and improvements 23,172      
Accumulated depreciation 2,989      
Seniors Housing Operating | Conroe, 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 980      
Initial cost of building and improvements 7,771      
Cost Capitalized Subsequent to Acquisition 3,495      
Carrying amount of land and land improvements 980      
Carrying amount of building and improvements 11,266      
Accumulated depreciation 3,774      
Seniors Housing Operating | Conroe, 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 1,440      
Initial cost of building and improvements 6,136      
Cost Capitalized Subsequent to Acquisition 56      
Carrying amount of land and land improvements 1,440      
Carrying amount of building and improvements 6,192      
Accumulated depreciation 1,466      
Seniors Housing Operating | Conyers, 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 3,149      
Initial cost of building and improvements 40,390      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,149      
Carrying amount of building and improvements 40,390      
Accumulated depreciation 470      
Seniors Housing Operating | Conyers, 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 1,609      
Initial cost of building and improvements 18,585      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,609      
Carrying amount of building and improvements 18,585      
Accumulated depreciation 218      
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 1,515      
Carrying amount of land and land improvements 864      
Carrying amount of building and improvements 9,486      
Accumulated depreciation 2,298      
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 1,850      
Carrying amount of land and land improvements 1,792      
Carrying amount of building and improvements 11,702      
Accumulated depreciation 3,186      
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 953      
Carrying amount of land and land improvements 1,550      
Carrying amount of building and improvements 9,339      
Accumulated depreciation 3,118      
Seniors Housing Operating | Copthorne, 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 29      
Cost Capitalized Subsequent to Acquisition 55      
Carrying amount of land and land improvements 4,096      
Carrying amount of building and improvements 84      
Accumulated depreciation 0      
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 5,741      
Initial cost of land and land improvements 2,194      
Initial cost of building and improvements 17,690      
Cost Capitalized Subsequent to Acquisition 9,506      
Carrying amount of land and land improvements 2,967      
Carrying amount of building and improvements 26,423      
Accumulated depreciation 9,911      
Seniors Housing Operating | Coral Gables, 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 7      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 7      
Accumulated depreciation 0      
Seniors Housing Operating | Covington, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 27,755      
Initial cost of land and land improvements 2,221      
Initial cost of building and improvements 41,467      
Cost Capitalized Subsequent to Acquisition 13      
Carrying amount of land and land improvements 2,221      
Carrying amount of building and improvements 41,480      
Accumulated depreciation 935      
Seniors Housing Operating | Cranberry Township, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,867      
Initial cost of building and improvements 66,930      
Cost Capitalized Subsequent to Acquisition 16      
Carrying amount of land and land improvements 3,867      
Carrying amount of building and improvements 66,946      
Accumulated depreciation 746      
Seniors Housing Operating | Crewe, 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 3,810      
Initial cost of building and improvements 7,946      
Cost Capitalized Subsequent to Acquisition 32      
Carrying amount of land and land improvements 3,810      
Carrying amount of building and improvements 7,978      
Accumulated depreciation 401      
Seniors Housing Operating | Crowborough, 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 3,993      
Cost Capitalized Subsequent to Acquisition 9      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,002      
Accumulated depreciation 530      
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 7,152      
Carrying amount of land and land improvements 4,432      
Carrying amount of building and improvements 15,583      
Accumulated depreciation 636      
Seniors Housing Operating | Croydon, 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 358      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 358      
Accumulated depreciation 13      
Seniors Housing Operating | Croydon, 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 433      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 433      
Accumulated depreciation 15      
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 2,692      
Carrying amount of land and land improvements 1,036      
Carrying amount of building and improvements 14,992      
Accumulated depreciation 6,245      
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 4,576      
Carrying amount of land and land improvements 7,567      
Carrying amount of building and improvements 44,339      
Accumulated depreciation 11,972      
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 217      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 217      
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 758      
Carrying amount of land and land improvements 599      
Carrying amount of building and improvements 3,555      
Accumulated depreciation 974      
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 6,041      
Initial cost of land and land improvements 1,301      
Initial cost of building and improvements 8,715      
Cost Capitalized Subsequent to Acquisition 240      
Carrying amount of land and land improvements 1,313      
Carrying amount of building and improvements 8,943      
Accumulated depreciation 836      
Seniors Housing Operating | Cuyahoga Falls, 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 2,805      
Initial cost of building and improvements 38,415      
Cost Capitalized Subsequent to Acquisition 17      
Carrying amount of land and land improvements 2,805      
Carrying amount of building and improvements 38,432      
Accumulated depreciation 482      
Seniors Housing Operating | Cypress, 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 2,145      
Initial cost of building and improvements 14,552      
Cost Capitalized Subsequent to Acquisition 105      
Carrying amount of land and land improvements 2,145      
Carrying amount of building and improvements 14,657      
Accumulated depreciation 3,358      
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 5,254      
Carrying amount of land and land improvements 6,330      
Carrying amount of building and improvements 120,048      
Accumulated depreciation 34,002      
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 8,124      
Carrying amount of land and land improvements 4,865      
Carrying amount of building and improvements 29,067      
Accumulated depreciation 2,834      
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 7,711      
Initial cost of building and improvements 54,255      
Cost Capitalized Subsequent to Acquisition 1,392      
Carrying amount of land and land improvements 5,508      
Carrying amount of building and improvements 57,850      
Accumulated depreciation 9,735      
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 8,724      
Carrying amount of land and land improvements 2,266      
Carrying amount of building and improvements 37,451      
Accumulated depreciation 4,074      
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 1,275      
Carrying amount of land and land improvements 1,309      
Carrying amount of building and improvements 12,782      
Accumulated depreciation 1,917      
Seniors Housing Operating | Darlington, 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 103      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 103      
Accumulated depreciation 4      
Seniors Housing Operating | Daytona 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 5,758      
Initial cost of building and improvements 27,189      
Cost Capitalized Subsequent to Acquisition 31      
Carrying amount of land and land improvements 5,758      
Carrying amount of building and improvements 27,220      
Accumulated depreciation 1,074      
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 3,518      
Carrying amount of land and land improvements 1,158      
Carrying amount of building and improvements 18,760      
Accumulated depreciation 4,301      
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 1,946      
Initial cost of building and improvements 26,575      
Cost Capitalized Subsequent to Acquisition 3,202      
Carrying amount of land and land improvements 1,951      
Carrying amount of building and improvements 29,772      
Accumulated depreciation 11,349      
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 365      
Carrying amount of land and land improvements 1,941      
Carrying amount of building and improvements 26,593      
Accumulated depreciation 2,451      
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 1,036      
Carrying amount of land and land improvements 1,760      
Carrying amount of building and improvements 9,341      
Accumulated depreciation 3,515      
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 26,965      
Carrying amount of land and land improvements 5,040      
Carrying amount of building and improvements 21,925      
Accumulated depreciation 1,654      
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 10,018      
Cost Capitalized Subsequent to Acquisition 54      
Carrying amount of land and land improvements 4,542      
Carrying amount of building and improvements 10,072      
Accumulated depreciation 819      
Seniors Housing Operating | Denton, 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 9,333      
Initial cost of building and improvements 23,667      
Cost Capitalized Subsequent to Acquisition 150      
Carrying amount of land and land improvements 9,333      
Carrying amount of building and improvements 23,817      
Accumulated depreciation 834      
Seniors Housing Operating | Denton, TX 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 7,448      
Carrying amount of land and land improvements 2,322      
Carrying amount of building and improvements 5,126      
Accumulated depreciation 79      
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 1,638      
Initial cost of building and improvements 11,677      
Cost Capitalized Subsequent to Acquisition 14,263      
Carrying amount of land and land improvements 1,450      
Carrying amount of building and improvements 14,945      
Accumulated depreciation 9,322      
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 10,185      
Carrying amount of land and land improvements 2,910      
Carrying amount of building and improvements 46,023      
Accumulated depreciation 19,074      
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 112,077      
Carrying amount of land and land improvements 5,445      
Carrying amount of building and improvements 117,386      
Accumulated depreciation 25,007      
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 1,685      
Carrying amount of land and land improvements 1,996      
Carrying amount of building and improvements 23,234      
Accumulated depreciation 3,990      
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 2,430      
Carrying amount of land and land improvements 1,383      
Carrying amount of building and improvements 11,872      
Accumulated depreciation 2,261      
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 3,685      
Carrying amount of land and land improvements 4,133      
Carrying amount of building and improvements 42,374      
Accumulated depreciation 15,458      
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 1,532      
Initial cost of building and improvements 11,294      
Cost Capitalized Subsequent to Acquisition 3,301      
Carrying amount of land and land improvements 1,934      
Carrying amount of building and improvements 14,193      
Accumulated depreciation 5,937      
Seniors Housing Operating | Dorking, 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 624      
Cost Capitalized Subsequent to Acquisition 46      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 670      
Accumulated depreciation 69      
Seniors Housing Operating | Dowagiac, 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 825      
Initial cost of building and improvements 1,778      
Cost Capitalized Subsequent to Acquisition 144      
Carrying amount of land and land improvements 841      
Carrying amount of building and improvements 1,906      
Accumulated depreciation 540      
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 1,496      
Carrying amount of land and land improvements 1,925      
Carrying amount of building and improvements 12,135      
Accumulated depreciation 5,583      
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 5,499      
Initial cost of building and improvements 51,847      
Cost Capitalized Subsequent to Acquisition 10,177      
Carrying amount of land and land improvements 5,340      
Carrying amount of building and improvements 62,183      
Accumulated depreciation 4,408      
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 701      
Carrying amount of land and land improvements 1,186      
Carrying amount of building and improvements 26,029      
Accumulated depreciation 6,594      
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 1,120      
Carrying amount of land and land improvements 3,717      
Carrying amount of building and improvements 24,126      
Accumulated depreciation 3,059      
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 2,596      
Carrying amount of land and land improvements 3,216      
Carrying amount of building and improvements 25,942      
Accumulated depreciation 3,087      
Seniors Housing Operating | Eagan, MN 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 2,260      
Initial cost of building and improvements 31,643      
Cost Capitalized Subsequent to Acquisition 1,147      
Carrying amount of land and land improvements 2,383      
Carrying amount of building and improvements 32,667      
Accumulated depreciation 7,585      
Seniors Housing Operating | Eagan, MN 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 32,370      
Initial cost of land and land improvements 1,494      
Initial cost of building and improvements 34,714      
Cost Capitalized Subsequent to Acquisition 17      
Carrying amount of land and land improvements 1,494      
Carrying amount of building and improvements 34,731      
Accumulated depreciation 728      
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 799      
Carrying amount of land and land improvements 4,534      
Carrying amount of building and improvements 19,133      
Accumulated depreciation 1,356      
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 1,626      
Initial cost of building and improvements 10,765      
Cost Capitalized Subsequent to Acquisition 1,513      
Carrying amount of land and land improvements 1,692      
Carrying amount of building and improvements 12,212      
Accumulated depreciation 3,020      
Seniors Housing Operating | East Grinstead, 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 2,237      
Initial cost of building and improvements 27,698      
Cost Capitalized Subsequent to Acquisition 12      
Carrying amount of land and land improvements 2,237      
Carrying amount of building and improvements 27,710      
Accumulated depreciation 715      
Seniors Housing Operating | East Kilbride, 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 17      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 17      
Accumulated depreciation 0      
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 2,821      
Carrying amount of land and land improvements 3,944      
Carrying amount of building and improvements 22,169      
Accumulated depreciation 4,341      
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 3,043      
Carrying amount of land and land improvements 127      
Carrying amount of building and improvements 48,976      
Accumulated depreciation 17,601      
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 4,125      
Carrying amount of land and land improvements 4,986      
Carrying amount of building and improvements 41,413      
Accumulated depreciation 14,661      
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 3,083      
Initial cost of building and improvements 25,100      
Cost Capitalized Subsequent to Acquisition 13,509      
Carrying amount of land and land improvements 4,194      
Carrying amount of building and improvements 37,498      
Accumulated depreciation 13,995      
Seniors Housing Operating | Eastcote, 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 73      
Initial cost of building and improvements 7,938      
Cost Capitalized Subsequent to Acquisition 16      
Carrying amount of land and land improvements 73      
Carrying amount of building and improvements 7,954      
Accumulated depreciation 356      
Seniors Housing Operating | Edgbaston, 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 2,040      
Initial cost of building and improvements 10,476      
Cost Capitalized Subsequent to Acquisition 5,477      
Carrying amount of land and land improvements 2,761      
Carrying amount of building and improvements 15,232      
Accumulated depreciation 3,582      
Seniors Housing Operating | Edgbaston, 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 3      
Initial cost of building and improvements 15,859      
Cost Capitalized Subsequent to Acquisition 3,657      
Carrying amount of land and land improvements 68      
Carrying amount of building and improvements 19,451      
Accumulated depreciation 4,932      
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 4,878      
Carrying amount of land and land improvements 4,618      
Carrying amount of building and improvements 29,868      
Accumulated depreciation 10,900      
Seniors Housing Operating | Edinburgh, 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 4,479      
Initial cost of building and improvements 34,050      
Cost Capitalized Subsequent to Acquisition 21      
Carrying amount of land and land improvements 4,479      
Carrying amount of building and improvements 34,071      
Accumulated depreciation 713      
Seniors Housing Operating | Edinburgh, 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 4,862      
Cost Capitalized Subsequent to Acquisition 692      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 5,554      
Accumulated depreciation 670      
Seniors Housing Operating | Edinburgh, 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 3,180      
Cost Capitalized Subsequent to Acquisition 24      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,204      
Accumulated depreciation 423      
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 5,272      
Carrying amount of land and land improvements 2,167      
Carrying amount of building and improvements 37,311      
Accumulated depreciation 15,357      
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 595      
Carrying amount of land and land improvements 410      
Carrying amount of building and improvements 8,983      
Accumulated depreciation 3,090      
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 11,045      
Carrying amount of land and land improvements 1,650      
Carrying amount of building and improvements 35,494      
Accumulated depreciation 12,273      
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 3,455      
Carrying amount of land and land improvements 2,905      
Carrying amount of building and improvements 29,854      
Accumulated depreciation 5,427      
Seniors Housing Operating | Edmonton, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 5,230      
Initial cost of land and land improvements 1,460      
Initial cost of building and improvements 27,395      
Cost Capitalized Subsequent to Acquisition 4,873      
Carrying amount of land and land improvements 1,579      
Carrying amount of building and improvements 32,149      
Accumulated depreciation 11,283      
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 644      
Carrying amount of land and land improvements 670      
Carrying amount of building and improvements 4,279      
Accumulated depreciation 1,003      
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 56,807      
Carrying amount of land and land improvements 5,190      
Carrying amount of building and improvements 51,617      
Accumulated depreciation 8,420      
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 11,409      
Initial cost of land and land improvements 1,846      
Initial cost of building and improvements 21,426      
Cost Capitalized Subsequent to Acquisition 1,523      
Carrying amount of land and land improvements 1,810      
Carrying amount of building and improvements 22,985      
Accumulated depreciation 2,695      
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 3,992      
Initial cost of building and improvements 31,194      
Cost Capitalized Subsequent to Acquisition 18,711      
Carrying amount of land and land improvements 5,447      
Carrying amount of building and improvements 48,450      
Accumulated depreciation 17,107      
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 8,960      
Carrying amount of land and land improvements 5,040      
Carrying amount of building and improvements 55,215      
Accumulated depreciation 20,808      
Seniors Housing Operating | Enfield, 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 12,175      
Cost Capitalized Subsequent to Acquisition 47      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 12,222      
Accumulated depreciation 63      
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 4,092      
Carrying amount of land and land improvements 882      
Carrying amount of building and improvements 16,420      
Accumulated depreciation 6,652      
Seniors Housing Operating | Epsom, 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 19,864      
Initial cost of building and improvements 34,294      
Cost Capitalized Subsequent to Acquisition 3,722      
Carrying amount of land and land improvements 20,458      
Carrying amount of building and improvements 37,422      
Accumulated depreciation 8,859      
Seniors Housing Operating | Epsom, 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 2,001      
Cost Capitalized Subsequent to Acquisition 60      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,061      
Accumulated depreciation 267      
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 1,455      
Initial cost of building and improvements 8,324      
Cost Capitalized Subsequent to Acquisition 1,198      
Carrying amount of land and land improvements 1,552      
Carrying amount of building and improvements 9,425      
Accumulated depreciation 2,531      
Seniors Housing Operating | Escondido, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,968      
Initial cost of building and improvements 15,255      
Cost Capitalized Subsequent to Acquisition 187      
Carrying amount of land and land improvements 5,968      
Carrying amount of building and improvements 15,442      
Accumulated depreciation 621      
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 4,302      
Initial cost of building and improvements 35,972      
Cost Capitalized Subsequent to Acquisition 20,139      
Carrying amount of land and land improvements 5,847      
Carrying amount of building and improvements 54,566      
Accumulated depreciation 21,583      
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 3,294      
Carrying amount of land and land improvements 3,310      
Carrying amount of building and improvements 23,698      
Accumulated depreciation 5,792      
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 1,785      
Carrying amount of land and land improvements 1,045      
Carrying amount of building and improvements 13,761      
Accumulated depreciation 2,864      
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 2,345      
Carrying amount of land and land improvements 638      
Carrying amount of building and improvements 11,053      
Accumulated depreciation 2,202      
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 1,772      
Carrying amount of land and land improvements 1,915      
Carrying amount of building and improvements 18,416      
Accumulated depreciation 2,048      
Seniors Housing Operating | Eye, 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 2,548      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,548      
Accumulated depreciation 329      
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 3,977      
Carrying amount of land and land improvements 3,308      
Carrying amount of building and improvements 47,657      
Accumulated depreciation 17,160      
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 921      
Carrying amount of land and land improvements 561      
Carrying amount of building and improvements 4,916      
Accumulated depreciation 960      
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 11,932      
Carrying amount of land and land improvements 1,460      
Carrying amount of building and improvements 25,972      
Accumulated depreciation 13,126      
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 48,919      
Carrying amount of land and land improvements 4,770      
Carrying amount of building and improvements 44,149      
Accumulated depreciation 5,743      
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 1,416      
Initial cost of building and improvements 12,627      
Cost Capitalized Subsequent to Acquisition 428      
Carrying amount of land and land improvements 1,438      
Carrying amount of building and improvements 13,033      
Accumulated depreciation 2,602      
Seniors Housing Operating | Falkirk, 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 2,491      
Cost Capitalized Subsequent to Acquisition 47      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,538      
Accumulated depreciation 318      
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 2,556      
Initial cost of building and improvements 13,477      
Cost Capitalized Subsequent to Acquisition 7,072      
Carrying amount of land and land improvements 3,456      
Carrying amount of building and improvements 19,649      
Accumulated depreciation 5,880      
Seniors Housing Operating | Faribault, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 780      
Initial cost of building and improvements 11,539      
Cost Capitalized Subsequent to Acquisition 683      
Carrying amount of land and land improvements 842      
Carrying amount of building and improvements 12,160      
Accumulated depreciation 2,828      
Seniors Housing Operating | Farmington 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 1,660      
Initial cost of building and improvements 20,644      
Cost Capitalized Subsequent to Acquisition 43      
Carrying amount of land and land improvements 1,660      
Carrying amount of building and improvements 20,687      
Accumulated depreciation 528      
Seniors Housing Operating | Ferndown, 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 3,403      
Cost Capitalized Subsequent to Acquisition 18      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,421      
Accumulated depreciation 445      
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 4,597      
Carrying amount of land and land improvements 1,515      
Carrying amount of building and improvements 19,082      
Accumulated depreciation 6,476      
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 855      
Carrying amount of land and land improvements 2,314      
Carrying amount of building and improvements 34,586      
Accumulated depreciation 3,987      
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 3,103      
Initial cost of building and improvements 19,365      
Cost Capitalized Subsequent to Acquisition 10,737      
Carrying amount of land and land improvements 4,234      
Carrying amount of building and improvements 28,971      
Accumulated depreciation 10,898      
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 3,932      
Carrying amount of land and land improvements 385      
Carrying amount of building and improvements 16,949      
Accumulated depreciation 6,961      
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 3,182      
Carrying amount of land and land improvements 1,377      
Carrying amount of building and improvements 12,593      
Accumulated depreciation 5,577      
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 1,392      
Carrying amount of land and land improvements 1,800      
Carrying amount of building and improvements 9,806      
Accumulated depreciation 3,472      
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 2,568      
Carrying amount of land and land improvements 3,147      
Carrying amount of building and improvements 26,918      
Accumulated depreciation 2,629      
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 833      
Carrying amount of land and land improvements 1,490      
Carrying amount of building and improvements 33,587      
Accumulated depreciation 9,613      
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 2,567      
Carrying amount of land and land improvements 2,306      
Carrying amount of building and improvements 13,515      
Accumulated depreciation 2,643      
Seniors Housing Operating | Fort Collins, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 25,902      
Initial cost of land and land improvements 4,275      
Initial cost of building and improvements 39,097      
Cost Capitalized Subsequent to Acquisition 14      
Carrying amount of land and land improvements 4,275      
Carrying amount of building and improvements 39,111      
Accumulated depreciation 977      
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 1,133      
Carrying amount of land and land improvements 3,637      
Carrying amount of building and improvements 43,375      
Accumulated depreciation 6,374      
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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 23,891      
Carrying amount of land and land improvements 1,782      
Carrying amount of building and improvements 22,109      
Accumulated depreciation 8,003      
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 23,185      
Carrying amount of land and land improvements 2,080      
Carrying amount of building and improvements 51,073      
Accumulated depreciation 17,487      
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 19,953      
Carrying amount of land and land improvements 7,166      
Carrying amount of building and improvements 57,294      
Accumulated depreciation 12,422      
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 253      
Carrying amount of land and land improvements 2,538      
Carrying amount of building and improvements 19,162      
Accumulated depreciation 3,114      
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 2,781      
Initial cost of building and improvements 23,053      
Cost Capitalized Subsequent to Acquisition 491      
Carrying amount of land and land improvements 2,781      
Carrying amount of building and improvements 23,544      
Accumulated depreciation 3,676      
Seniors Housing Operating | Fort Worth, TX 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 1,565      
Initial cost of building and improvements 15,982      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 1,565      
Carrying amount of building and improvements 15,960      
Accumulated depreciation 3,667      
Seniors Housing Operating | Fountain Hills, 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 1,408      
Initial cost of building and improvements 25,645      
Cost Capitalized Subsequent to Acquisition 213      
Carrying amount of land and land improvements 1,408      
Carrying amount of building and improvements 25,858      
Accumulated depreciation 1,510      
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 3,950      
Carrying amount of land and land improvements 5,787      
Carrying amount of building and improvements 19,333      
Accumulated depreciation 4,366      
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 15,353      
Carrying amount of land and land improvements 3,456      
Carrying amount of building and improvements 40,597      
Accumulated depreciation 16,886      
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 21,691      
Initial cost of land and land improvements 896      
Initial cost of building and improvements 10,591      
Cost Capitalized Subsequent to Acquisition 25,938      
Carrying amount of land and land improvements 2,459      
Carrying amount of building and improvements 34,966      
Accumulated depreciation 7,175      
Seniors Housing Operating | Frimley, 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 41      
Initial cost of building and improvements 5,691      
Cost Capitalized Subsequent to Acquisition 62      
Carrying amount of land and land improvements 41      
Carrying amount of building and improvements 5,753      
Accumulated depreciation 287      
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 2,040      
Initial cost of building and improvements 11,109      
Cost Capitalized Subsequent to Acquisition 5,790      
Carrying amount of land and land improvements 2,761      
Carrying amount of building and improvements 16,178      
Accumulated depreciation 4,767      
Seniors Housing Operating | Fulham, 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 576      
Cost Capitalized Subsequent to Acquisition 31      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 607      
Accumulated depreciation 73      
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 4,281      
Carrying amount of land and land improvements 1,998      
Carrying amount of building and improvements 24,236      
Accumulated depreciation 8,414      
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 2,395      
Carrying amount of land and land improvements 1,801      
Carrying amount of building and improvements 8,590      
Accumulated depreciation 1,618      
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 936      
Carrying amount of land and land improvements 6,751      
Carrying amount of building and improvements 54,999      
Accumulated depreciation 6,415      
Seniors Housing Operating | Gahanna, 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 772      
Initial cost of building and improvements 11,214      
Cost Capitalized Subsequent to Acquisition 2,352      
Carrying amount of land and land improvements 888      
Carrying amount of building and improvements 13,450      
Accumulated depreciation 5,398      
Seniors Housing Operating | Gahanna, 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 2,432      
Initial cost of building and improvements 34,645      
Cost Capitalized Subsequent to Acquisition 833      
Carrying amount of land and land improvements 2,447      
Carrying amount of building and improvements 35,463      
Accumulated depreciation 3,835      
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 2,278      
Carrying amount of land and land improvements 1,953      
Carrying amount of building and improvements 29,269      
Accumulated depreciation 5,070      
Seniors Housing Operating | Gainesville, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 31,907      
Carrying amount of land and land improvements 2,374      
Carrying amount of building and improvements 29,533      
Accumulated depreciation 4,694      
Seniors Housing Operating | Gainesville, 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 972      
Initial cost of building and improvements 8,809      
Cost Capitalized Subsequent to Acquisition 1,284      
Carrying amount of land and land improvements 972      
Carrying amount of building and improvements 10,093      
Accumulated depreciation 1,544      
Seniors Housing Operating | Gaithersburg, 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 103,746      
Carrying amount of land and land improvements 7,664      
Carrying amount of building and improvements 96,082      
Accumulated depreciation 1,177      
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 2,325      
Carrying amount of land and land improvements 2,107      
Carrying amount of building and improvements 6,874      
Accumulated depreciation 1,655      
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 4,788      
Carrying amount of land and land improvements 1,164      
Carrying amount of building and improvements 15,598      
Accumulated depreciation 11,280      
Seniors Housing Operating | Gateshead, 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 2,328      
Cost Capitalized Subsequent to Acquisition 54      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,382      
Accumulated depreciation 295      
Seniors Housing Operating | Gateshead, 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 1,589      
Cost Capitalized Subsequent to Acquisition 64      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,653      
Accumulated depreciation 199      
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 1,182      
Carrying amount of land and land improvements 5,491      
Carrying amount of building and improvements 32,758      
Accumulated depreciation 1,722      
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 8,137      
Carrying amount of land and land improvements 1,583      
Carrying amount of building and improvements 24,061      
Accumulated depreciation 9,039      
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 3,748      
Carrying amount of land and land improvements 2,216      
Carrying amount of building and improvements 31,938      
Accumulated depreciation 13,639      
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 3,745      
Carrying amount of land and land improvements 4,718      
Carrying amount of building and improvements 38,857      
Accumulated depreciation 15,709      
Seniors Housing Operating | Glen Mills, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,941      
Initial cost of building and improvements 27,929      
Cost Capitalized Subsequent to Acquisition 1      
Carrying amount of land and land improvements 3,941      
Carrying amount of building and improvements 27,930      
Accumulated depreciation 197      
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 573      
Carrying amount of land and land improvements 3,115      
Carrying amount of building and improvements 25,240      
Accumulated depreciation 3,048      
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 53,181      
Carrying amount of land and land improvements 9,013      
Carrying amount of building and improvements 44,168      
Accumulated depreciation 1,254      
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 7,431      
Carrying amount of land and land improvements 2,090      
Carrying amount of building and improvements 76,719      
Accumulated depreciation 28,882      
Seniors Housing Operating | Godalming, 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 1,507      
Initial cost of building and improvements 5,567      
Cost Capitalized Subsequent to Acquisition 16      
Carrying amount of land and land improvements 1,507      
Carrying amount of building and improvements 5,583      
Accumulated depreciation 277      
Seniors Housing Operating | Godalming, 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 1,126      
Cost Capitalized Subsequent to Acquisition 27      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,153      
Accumulated depreciation 148      
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 1,982      
Carrying amount of land and land improvements 1,663      
Carrying amount of building and improvements 35,352      
Accumulated depreciation 12,622      
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 1,233      
Carrying amount of land and land improvements 2,040      
Carrying amount of building and improvements 31,903      
Accumulated depreciation 11,526      
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 107      
Carrying amount of land and land improvements 1,056      
Carrying amount of building and improvements 13,248      
Accumulated depreciation 1,929      
Seniors Housing Operating | Grand Prairie, 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 1,880      
Initial cost of building and improvements 23,827      
Cost Capitalized Subsequent to Acquisition 134      
Carrying amount of land and land improvements 1,884      
Carrying amount of building and improvements 23,957      
Accumulated depreciation 2,497      
Seniors Housing Operating | Grand Prairie, 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 4,108      
Initial cost of building and improvements 27,940      
Cost Capitalized Subsequent to Acquisition 37      
Carrying amount of land and land improvements 4,108      
Carrying amount of building and improvements 27,977      
Accumulated depreciation 1,612      
Seniors Housing Operating | Grand Prairie, 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 9,650      
Initial cost of building and improvements 32,445      
Cost Capitalized Subsequent to Acquisition 29      
Carrying amount of land and land improvements 9,650      
Carrying amount of building and improvements 32,474      
Accumulated depreciation 400      
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 917      
Carrying amount of land and land improvements 2,373      
Carrying amount of building and improvements 16,468      
Accumulated depreciation 3,045      
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 525      
Carrying amount of land and land improvements 1,555      
Carrying amount of building and improvements 7,722      
Accumulated depreciation 1,189      
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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 27,497      
Carrying amount of land and land improvements 1,703      
Carrying amount of building and improvements 25,794      
Accumulated depreciation 8,785      
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 1,721      
Carrying amount of land and land improvements 561      
Carrying amount of building and improvements 10,595      
Accumulated depreciation 1,228      
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 930      
Carrying amount of land and land improvements 2,220      
Carrying amount of building and improvements 18,578      
Accumulated depreciation 4,460      
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 1,254      
Carrying amount of land and land improvements 1,077      
Carrying amount of building and improvements 19,305      
Accumulated depreciation 4,203      
Seniors Housing Operating | Greenville, 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 1,490      
Initial cost of building and improvements 4,341      
Cost Capitalized Subsequent to Acquisition 107      
Carrying amount of land and land improvements 1,495      
Carrying amount of building and improvements 4,443      
Accumulated depreciation 1,030      
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 3,146      
Carrying amount of land and land improvements 993      
Carrying amount of building and improvements 25,841      
Accumulated depreciation 4,340      
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 1,683      
Carrying amount of land and land improvements 1,550      
Carrying amount of building and improvements 24,453      
Accumulated depreciation 8,541      
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 2,386      
Carrying amount of land and land improvements 1,975      
Carrying amount of building and improvements 8,943      
Accumulated depreciation 1,158      
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 584      
Initial cost of building and improvements 5,160      
Cost Capitalized Subsequent to Acquisition 1,140      
Carrying amount of land and land improvements 597      
Carrying amount of building and improvements 6,287      
Accumulated depreciation 2,020      
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 1,264      
Carrying amount of land and land improvements 961      
Carrying amount of building and improvements 14,915      
Accumulated depreciation 5,363      
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 1,379      
Carrying amount of land and land improvements 1,452      
Carrying amount of building and improvements 33,134      
Accumulated depreciation 11,670      
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 2,688      
Carrying amount of land and land improvements 3,540      
Carrying amount of building and improvements 88,487      
Accumulated depreciation 16,699      
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 820      
Carrying amount of land and land improvements 1,122      
Carrying amount of building and improvements 6,043      
Accumulated depreciation 1,373      
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 3,302      
Carrying amount of land and land improvements 1,094      
Carrying amount of building and improvements 31,029      
Accumulated depreciation 11,335      
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 1,261      
Carrying amount of land and land improvements 539      
Carrying amount of building and improvements 17,605      
Accumulated depreciation 5,104      
Seniors Housing Operating | Hailsham, 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 4,502      
Cost Capitalized Subsequent to Acquisition 316      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,818      
Accumulated depreciation 603      
Seniors Housing Operating | Halstead, 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 1,321      
Initial cost of building and improvements 19,274      
Cost Capitalized Subsequent to Acquisition 18      
Carrying amount of land and land improvements 1,321      
Carrying amount of building and improvements 19,292      
Accumulated depreciation 535      
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 967      
Initial cost of building and improvements 10,014      
Cost Capitalized Subsequent to Acquisition 1,361      
Carrying amount of land and land improvements 986      
Carrying amount of building and improvements 11,356      
Accumulated depreciation 2,674      
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 1,204      
Carrying amount of land and land improvements 1,187      
Carrying amount of building and improvements 12,085      
Accumulated depreciation 2,721      
Seniors Housing Operating | Hammersmith, 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 1,208      
Cost Capitalized Subsequent to Acquisition 52      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,260      
Accumulated depreciation 307      
Seniors Housing Operating | Hampton, 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 1,404      
Cost Capitalized Subsequent to Acquisition 587      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,991      
Accumulated depreciation 193      
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 1,089      
Carrying amount of land and land improvements 721      
Carrying amount of building and improvements 6,003      
Accumulated depreciation 2,405      
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 345      
Carrying amount of land and land improvements 2,628      
Carrying amount of building and improvements 39,209      
Accumulated depreciation 3,681      
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 564      
Carrying amount of land and land improvements 882      
Carrying amount of building and improvements 5,480      
Accumulated depreciation 1,327      
Seniors Housing Operating | Harrogate, 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 35,700      
Cost Capitalized Subsequent to Acquisition 75      
Carrying amount of land and land improvements 5,146      
Carrying amount of building and improvements 35,775      
Accumulated depreciation 478      
Seniors Housing Operating | Harrow, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 4,612      
Cost Capitalized Subsequent to Acquisition 83      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,695      
Accumulated depreciation 602      
Seniors Housing Operating | Hartlepool, 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 1,702      
Cost Capitalized Subsequent to Acquisition 23      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,725      
Accumulated depreciation 212      
Seniors Housing Operating | Hastings, 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 1,603      
Initial cost of building and improvements 6,519      
Cost Capitalized Subsequent to Acquisition 127      
Carrying amount of land and land improvements 1,632      
Carrying amount of building and improvements 6,617      
Accumulated depreciation 1,290      
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 3,218      
Carrying amount of land and land improvements 450      
Carrying amount of building and improvements 16,687      
Accumulated depreciation 5,034      
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 4,848      
Carrying amount of land and land improvements 1,907      
Carrying amount of building and improvements 38,814      
Accumulated depreciation 13,939      
Seniors Housing Operating | Haverhill, 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      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 25      
Accumulated depreciation 1      
Seniors Housing Operating | Haywards Heath, 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 2,269      
Initial cost of building and improvements 25,914      
Cost Capitalized Subsequent to Acquisition 15      
Carrying amount of land and land improvements 2,269      
Carrying amount of building and improvements 25,929      
Accumulated depreciation 651      
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 2,035      
Carrying amount of land and land improvements 1,872      
Carrying amount of building and improvements 21,058      
Accumulated depreciation 5,070      
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 3,969      
Carrying amount of land and land improvements 2,227      
Carrying amount of building and improvements 13,107      
Accumulated depreciation 2,041      
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 2,245      
Carrying amount of land and land improvements 1,299      
Carrying amount of building and improvements 13,736      
Accumulated depreciation 6,058      
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 3,330      
Carrying amount of land and land improvements 3,967      
Carrying amount of building and improvements 34,000      
Accumulated depreciation 3,870      
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 3,004      
Carrying amount of land and land improvements 1,105      
Carrying amount of building and improvements 18,432      
Accumulated depreciation 3,195      
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 1,055      
Carrying amount of land and land improvements 1,607      
Carrying amount of building and improvements 29,467      
Accumulated depreciation 3,038      
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 838      
Carrying amount of land and land improvements 1,521      
Carrying amount of building and improvements 22,407      
Accumulated depreciation 2,499      
Seniors Housing Operating | High Wycombe, 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 3,490      
Initial cost of building and improvements 13,134      
Cost Capitalized Subsequent to Acquisition 1,338      
Carrying amount of land and land improvements 3,501      
Carrying amount of building and improvements 14,461      
Accumulated depreciation 3,103      
Seniors Housing Operating | High Wycombe, 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 2,494      
Initial cost of building and improvements 10,370      
Cost Capitalized Subsequent to Acquisition 42      
Carrying amount of land and land improvements 2,494      
Carrying amount of building and improvements 10,412      
Accumulated depreciation 411      
Seniors Housing Operating | Highland Heights, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,773      
Initial cost of building and improvements 31,809      
Cost Capitalized Subsequent to Acquisition 21      
Carrying amount of land and land improvements 3,773      
Carrying amount of building and improvements 31,830      
Accumulated depreciation 567      
Seniors Housing Operating | Highland Park, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,250      
Initial cost of building and improvements 25,313      
Cost Capitalized Subsequent to Acquisition 2,690      
Carrying amount of land and land improvements 2,271      
Carrying amount of building and improvements 27,982      
Accumulated depreciation 10,828      
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 17,591      
Initial cost of building and improvements 47,933      
Cost Capitalized Subsequent to Acquisition 4,163      
Carrying amount of land and land improvements 18,116      
Carrying amount of building and improvements 51,571      
Accumulated depreciation 11,729      
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 1,109      
Carrying amount of land and land improvements 1,444      
Carrying amount of building and improvements 33,397      
Accumulated depreciation 9,689      
Seniors Housing Operating | Hobe Sound, 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 3,314      
Initial cost of building and improvements 22,241      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,314      
Carrying amount of building and improvements 22,241      
Accumulated depreciation 688      
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 4,645      
Carrying amount of land and land improvements 4,331      
Carrying amount of building and improvements 39,608      
Accumulated depreciation 14,206      
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 7,366      
Carrying amount of land and land improvements 23,057      
Carrying amount of building and improvements 63,273      
Accumulated depreciation 14,506      
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 3,948      
Carrying amount of land and land improvements 2,186      
Carrying amount of building and improvements 21,970      
Accumulated depreciation 4,158      
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 1,749      
Initial cost of building and improvements 9,108      
Cost Capitalized Subsequent to Acquisition 4,708      
Carrying amount of land and land improvements 2,366      
Carrying amount of building and improvements 13,199      
Accumulated depreciation 4,365      
Seniors Housing Operating | Horsham, 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 5,520      
Cost Capitalized Subsequent to Acquisition 18      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 5,538      
Accumulated depreciation 727      
Seniors Housing Operating | Houghton-le-Spring, 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 1,314      
Cost Capitalized Subsequent to Acquisition 16      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,330      
Accumulated depreciation 187      
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 3,830      
Initial cost of building and improvements 55,674      
Cost Capitalized Subsequent to Acquisition 11,435      
Carrying amount of land and land improvements 3,830      
Carrying amount of building and improvements 67,109      
Accumulated depreciation 26,622      
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 1,750      
Initial cost of building and improvements 15,603      
Cost Capitalized Subsequent to Acquisition 3,803      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 19,406      
Accumulated depreciation 5,163      
Seniors Housing Operating | Howard, WI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 579      
Initial cost of building and improvements 32,122      
Cost Capitalized Subsequent to Acquisition 6,260      
Carrying amount of land and land improvements 718      
Carrying amount of building and improvements 38,243      
Accumulated depreciation 7,999      
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 3,603      
Carrying amount of land and land improvements 1,158      
Carrying amount of building and improvements 25,088      
Accumulated depreciation 9,187      
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 325      
Carrying amount of land and land improvements 1,621      
Carrying amount of building and improvements 11,604      
Accumulated depreciation 1,317      
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 806      
Carrying amount of land and land improvements 1,769      
Carrying amount of building and improvements 35,186      
Accumulated depreciation 3,679      
Seniors Housing Operating | Huntingdon Valley, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,195      
Initial cost of building and improvements 48,376      
Cost Capitalized Subsequent to Acquisition 28      
Carrying amount of land and land improvements 4,195      
Carrying amount of building and improvements 48,404      
Accumulated depreciation 840      
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 6,097      
Carrying amount of land and land improvements 3,931      
Carrying amount of building and improvements 37,146      
Accumulated depreciation 14,197      
Seniors Housing Operating | Huntsville, 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 1,382      
Initial cost of building and improvements 14,286      
Cost Capitalized Subsequent to Acquisition 158      
Carrying amount of land and land improvements 1,382      
Carrying amount of building and improvements 14,444      
Accumulated depreciation 2,092      
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 6,500      
Carrying amount of land and land improvements 600      
Carrying amount of building and improvements 17,090      
Accumulated depreciation 5,893      
Seniors Housing Operating | Ilkley, 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 3,714      
Initial cost of building and improvements 20,530      
Cost Capitalized Subsequent to Acquisition 109      
Carrying amount of land and land improvements 3,714      
Carrying amount of building and improvements 20,639      
Accumulated depreciation 338      
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 1,550      
Initial cost of building and improvements 14,441      
Cost Capitalized Subsequent to Acquisition 111      
Carrying amount of land and land improvements 1,560      
Carrying amount of building and improvements 14,542      
Accumulated depreciation 2,961      
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 2,005      
Carrying amount of land and land improvements 3,250      
Carrying amount of building and improvements 26,441      
Accumulated depreciation 6,680      
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 0      
Initial cost of land and land improvements 2,017      
Initial cost of building and improvements 15,796      
Cost Capitalized Subsequent to Acquisition 1,251      
Carrying amount of land and land improvements 2,098      
Carrying amount of building and improvements 16,966      
Accumulated depreciation 2,240      
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 728      
Carrying amount of land and land improvements 2,192      
Carrying amount of building and improvements 12,248      
Accumulated depreciation 1,627      
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 2,548      
Carrying amount of land and land improvements 991      
Carrying amount of building and improvements 8,459      
Accumulated depreciation 1,483      
Seniors Housing Operating | Ipswich, 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 5      
Cost Capitalized Subsequent to Acquisition 6      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 11      
Accumulated depreciation 0      
Seniors Housing Operating | Ipswich, 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 2,913      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,913      
Accumulated depreciation 371      
Seniors Housing Operating | Isleworth, 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 44      
Initial cost of building and improvements 6,417      
Cost Capitalized Subsequent to Acquisition 13      
Carrying amount of land and land improvements 44      
Carrying amount of building and improvements 6,430      
Accumulated depreciation 346      
Seniors Housing Operating | Islington, 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 376      
Cost Capitalized Subsequent to Acquisition 13      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 389      
Accumulated depreciation 14      
Seniors Housing Operating | Islington, 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 20      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 20      
Accumulated depreciation 0      
Seniors Housing Operating | Islington, 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 1,226      
Cost Capitalized Subsequent to Acquisition 10      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,236      
Accumulated depreciation 145      
Seniors Housing Operating | Islington, 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 0      
Initial cost of building and improvements 450      
Cost Capitalized Subsequent to Acquisition 14      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 464      
Accumulated depreciation 16      
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 1,468      
Carrying amount of land and land improvements 1,387      
Carrying amount of building and improvements 13,941      
Accumulated depreciation 2,811      
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 416      
Carrying amount of land and land improvements 750      
Carrying amount of building and improvements 25,647      
Accumulated depreciation 5,724      
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 2,344      
Carrying amount of land and land improvements 1,691      
Carrying amount of building and improvements 27,034      
Accumulated depreciation 6,049      
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 23,604      
Carrying amount of land and land improvements 6,550      
Carrying amount of building and improvements 30,250      
Accumulated depreciation 6,761      
Seniors Housing Operating | Jacksonville, FL 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 2,932      
Initial cost of building and improvements 14,269      
Cost Capitalized Subsequent to Acquisition 1,440      
Carrying amount of land and land improvements 2,932      
Carrying amount of building and improvements 15,709      
Accumulated depreciation 2,287      
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 1,267      
Carrying amount of land and land improvements 1,646      
Carrying amount of building and improvements 23,640      
Accumulated depreciation 2,728      
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 1,708      
Carrying amount of land and land improvements 1,588      
Carrying amount of building and improvements 24,985      
Accumulated depreciation 9,192      
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 1,872      
Carrying amount of land and land improvements 1,543      
Carrying amount of building and improvements 13,444      
Accumulated depreciation 3,239      
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 8,107      
Carrying amount of land and land improvements 6,293      
Carrying amount of building and improvements 55,267      
Accumulated depreciation 15,030      
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 1,552      
Initial cost of building and improvements 26,339      
Cost Capitalized Subsequent to Acquisition 1,598      
Carrying amount of land and land improvements 1,575      
Carrying amount of building and improvements 27,914      
Accumulated depreciation 10,383      
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 0      
Initial cost of land and land improvements 1,938      
Initial cost of building and improvements 11,694      
Cost Capitalized Subsequent to Acquisition 1,223      
Carrying amount of land and land improvements 1,943      
Carrying amount of building and improvements 12,912      
Accumulated depreciation 1,900      
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 3,433      
Initial cost of land and land improvements 1,936      
Initial cost of building and improvements 9,827      
Cost Capitalized Subsequent to Acquisition 6,197      
Carrying amount of land and land improvements 2,618      
Carrying amount of building and improvements 15,342      
Accumulated depreciation 5,855      
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 5,790      
Initial cost of building and improvements 42,578      
Cost Capitalized Subsequent to Acquisition 5,571      
Carrying amount of land and land improvements 5,921      
Carrying amount of building and improvements 48,018      
Accumulated depreciation 7,743      
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 31,842      
Initial cost of land and land improvements 5,000      
Initial cost of building and improvements 39,142      
Cost Capitalized Subsequent to Acquisition 5,455      
Carrying amount of land and land improvements 5,113      
Carrying amount of building and improvements 44,484      
Accumulated depreciation 6,743      
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 34,921      
Initial cost of land and land improvements 5,669      
Initial cost of building and improvements 47,725      
Cost Capitalized Subsequent to Acquisition 6,372      
Carrying amount of land and land improvements 5,798      
Carrying amount of building and improvements 53,968      
Accumulated depreciation 7,936      
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 27,997      
Initial cost of land and land improvements 3,416      
Initial cost of building and improvements 41,057      
Cost Capitalized Subsequent to Acquisition 4,819      
Carrying amount of land and land improvements 3,493      
Carrying amount of building and improvements 45,799      
Accumulated depreciation 6,578      
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 9,173      
Initial cost of land and land improvements 2,819      
Initial cost of building and improvements 10,587      
Cost Capitalized Subsequent to Acquisition 2,006      
Carrying amount of land and land improvements 2,883      
Carrying amount of building and improvements 12,529      
Accumulated depreciation 1,532      
Seniors Housing Operating | Kenilworth, 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      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 16      
Accumulated depreciation 0      
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 10,615      
Carrying amount of land and land improvements 3,735      
Carrying amount of building and improvements 39,784      
Accumulated depreciation 19,119      
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 5,886      
Carrying amount of land and land improvements 1,100      
Carrying amount of building and improvements 15,922      
Accumulated depreciation 12,776      
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 1,081      
Carrying amount of land and land improvements 814      
Carrying amount of building and improvements 13,420      
Accumulated depreciation 2,200      
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 1,969      
Carrying amount of land and land improvements 1,186      
Carrying amount of building and improvements 24,779      
Accumulated depreciation 8,942      
Seniors Housing Operating | Kennewick, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 14,345      
Initial cost of land and land improvements 2,246      
Initial cost of building and improvements 27,756      
Cost Capitalized Subsequent to Acquisition 4      
Carrying amount of land and land improvements 2,246      
Carrying amount of building and improvements 27,760      
Accumulated depreciation 698      
Seniors Housing Operating | Kidderminster, 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 2,628      
Initial cost of building and improvements 15,270      
Cost Capitalized Subsequent to Acquisition 23      
Carrying amount of land and land improvements 2,628      
Carrying amount of building and improvements 15,293      
Accumulated depreciation 499      
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 655      
Carrying amount of land and land improvements 2,123      
Carrying amount of building and improvements 33,785      
Accumulated depreciation 3,382      
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 887      
Initial cost of building and improvements 9,832      
Cost Capitalized Subsequent to Acquisition 3,551      
Carrying amount of land and land improvements 1,292      
Carrying amount of building and improvements 12,978      
Accumulated depreciation 3,638      
Seniors Housing Operating | Kingston Vale, 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 3,291      
Cost Capitalized Subsequent to Acquisition 32      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,323      
Accumulated depreciation 427      
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 3,016      
Carrying amount of land and land improvements 480      
Carrying amount of building and improvements 8,715      
Accumulated depreciation 4,876      
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 2,811      
Carrying amount of land and land improvements 1,683      
Carrying amount of building and improvements 27,018      
Accumulated depreciation 7,353      
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 17,624      
Carrying amount of land and land improvements 10,022      
Carrying amount of building and improvements 13,797      
Accumulated depreciation 2,843      
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 7,366      
Initial cost of land and land improvements 1,232      
Initial cost of building and improvements 12,806      
Cost Capitalized Subsequent to Acquisition 6,462      
Carrying amount of land and land improvements 1,344      
Carrying amount of building and improvements 19,156      
Accumulated depreciation 5,464      
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 3,740      
Carrying amount of land and land improvements 1,335      
Carrying amount of building and improvements 8,148      
Accumulated depreciation 3,908      
Seniors Housing Operating | Knebworth, 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 3,817      
Cost Capitalized Subsequent to Acquisition 17      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,834      
Accumulated depreciation 494      
Seniors Housing Operating | Knoxville, 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 2,207      
Initial cost of building and improvements 12,849      
Cost Capitalized Subsequent to Acquisition 1,464      
Carrying amount of land and land improvements 2,209      
Carrying amount of building and improvements 14,311      
Accumulated depreciation 5,025      
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 7,463      
Carrying amount of land and land improvements 7,463      
Carrying amount of building and improvements 0      
Accumulated depreciation 3      
Seniors Housing Operating | Kyle, 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 6,273      
Carrying amount of land and land improvements 6,273      
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 1,591      
Carrying amount of land and land improvements 2,996      
Carrying amount of building and improvements 18,136      
Accumulated depreciation 7,024      
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 0      
Initial cost of land and land improvements 1,199      
Initial cost of building and improvements 14,840      
Cost Capitalized Subsequent to Acquisition 986      
Carrying amount of land and land improvements 1,199      
Carrying amount of building and improvements 15,826      
Accumulated depreciation 1,998      
Seniors Housing Operating | Lacey, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 32,000      
Initial cost of land and land improvements 5,574      
Initial cost of building and improvements 48,495      
Cost Capitalized Subsequent to Acquisition 19      
Carrying amount of land and land improvements 5,574      
Carrying amount of building and improvements 48,514      
Accumulated depreciation 1,116      
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 1,015      
Initial cost of building and improvements 5,280      
Cost Capitalized Subsequent to Acquisition 1,360      
Carrying amount of land and land improvements 1,029      
Carrying amount of building and improvements 6,626      
Accumulated depreciation 1,717      
Seniors Housing Operating | Lafayette, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 15,759      
Initial cost of land and land improvements 2,784      
Initial cost of building and improvements 23,962      
Cost Capitalized Subsequent to Acquisition 18      
Carrying amount of land and land improvements 2,784      
Carrying amount of building and improvements 23,980      
Accumulated depreciation 656      
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 2,238      
Carrying amount of land and land improvements 2,618      
Carrying amount of building and improvements 25,224      
Accumulated depreciation 2,563      
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 3,100      
Carrying amount of land and land improvements 1,878      
Carrying amount of building and improvements 14,820      
Accumulated depreciation 6,810      
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 27,236      
Carrying amount of land and land improvements 12,894      
Carrying amount of building and improvements 103,088      
Accumulated depreciation 34,840      
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 23,497      
Carrying amount of land and land improvements 11,280      
Carrying amount of building and improvements 99,982      
Accumulated depreciation 30,012      
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 18,608      
Carrying amount of land and land improvements 9,150      
Carrying amount of building and improvements 76,450      
Accumulated depreciation 24,324      
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 1,619      
Carrying amount of land and land improvements 364      
Carrying amount of building and improvements 3,218      
Accumulated depreciation 833      
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 36,984      
Carrying amount of land and land improvements 5,735      
Carrying amount of building and improvements 31,249      
Accumulated depreciation 1,162      
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 4,639      
Carrying amount of land and land improvements 1,470      
Carrying amount of building and improvements 14,469      
Accumulated depreciation 6,707      
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 472      
Carrying amount of land and land improvements 2,416      
Carrying amount of building and improvements 20,263      
Accumulated depreciation 3,971      
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 197      
Carrying amount of land and land improvements 733      
Carrying amount of building and improvements 2,409      
Accumulated depreciation 528      
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 9,624      
Initial cost of land and land improvements 1,031      
Initial cost of building and improvements 17,410      
Cost Capitalized Subsequent to Acquisition 996      
Carrying amount of land and land improvements 1,041      
Carrying amount of building and improvements 18,396      
Accumulated depreciation 2,085      
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 2,197      
Carrying amount of land and land improvements 650      
Carrying amount of building and improvements 8,911      
Accumulated depreciation 2,836      
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 1,214      
Carrying amount of land and land improvements 1,000      
Carrying amount of building and improvements 23,602      
Accumulated depreciation 7,590      
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 6,630      
Carrying amount of land and land improvements 712      
Carrying amount of building and improvements 21,913      
Accumulated depreciation 9,013      
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 863      
Carrying amount of land and land improvements 1,059      
Carrying amount of building and improvements 8,532      
Accumulated depreciation 1,802      
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 360      
Carrying amount of land and land improvements 1,680      
Carrying amount of building and improvements 14,399      
Accumulated depreciation 3,291      
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 1,262      
Initial cost of building and improvements 11,154      
Cost Capitalized Subsequent to Acquisition 1,898      
Carrying amount of land and land improvements 1,350      
Carrying amount of building and improvements 12,964      
Accumulated depreciation 3,188      
Seniors Housing Operating | Lapeer, 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 1,827      
Initial cost of building and improvements 8,794      
Cost Capitalized Subsequent to Acquisition 107      
Carrying amount of land and land improvements 1,827      
Carrying amount of building and improvements 8,901      
Accumulated depreciation 1,632      
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 5,202      
Carrying amount of land and land improvements 5,924      
Carrying amount of building and improvements 42,141      
Accumulated depreciation 10,886      
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 1,491      
Carrying amount of land and land improvements 1,292      
Carrying amount of building and improvements 15,221      
Accumulated depreciation 2,843      
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 3,816      
Carrying amount of land and land improvements 2,444      
Carrying amount of building and improvements 25,829      
Accumulated depreciation 5,630      
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 16,123      
Initial cost of land and land improvements 1,829      
Initial cost of building and improvements 27,950      
Cost Capitalized Subsequent to Acquisition 7,438      
Carrying amount of land and land improvements 1,993      
Carrying amount of building and improvements 35,224      
Accumulated depreciation 8,981      
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 2,910      
Initial cost of land and land improvements 2,071      
Initial cost of building and improvements 5,187      
Cost Capitalized Subsequent to Acquisition 2,042      
Carrying amount of land and land improvements 2,256      
Carrying amount of building and improvements 7,044      
Accumulated depreciation 1,738      
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 16,437      
Initial cost of building and improvements 108,713      
Cost Capitalized Subsequent to Acquisition 14,280      
Carrying amount of land and land improvements 15,715      
Carrying amount of building and improvements 123,715      
Accumulated depreciation 7,369      
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 400      
Carrying amount of land and land improvements 250      
Carrying amount of building and improvements 9,116      
Accumulated depreciation 2,987      
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 2,008      
Carrying amount of land and land improvements 1,593      
Carrying amount of building and improvements 30,918      
Accumulated depreciation 10,914      
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 3,003      
Carrying amount of land and land improvements 3,585      
Carrying amount of building and improvements 27,104      
Accumulated depreciation 4,415      
Seniors Housing Operating | Leander, 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 5,157      
Carrying amount of land and land improvements 5,157      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
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 4,520      
Initial cost of building and improvements 17,219      
Cost Capitalized Subsequent to Acquisition 1,800      
Carrying amount of land and land improvements 4,592      
Carrying amount of building and improvements 18,947      
Accumulated depreciation 3,983      
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 12,329      
Carrying amount of land and land improvements 5,610      
Carrying amount of building and improvements 41,702      
Accumulated depreciation 17,330      
Seniors Housing Operating | Leeds, 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 4,251      
Initial cost of building and improvements 23,898      
Cost Capitalized Subsequent to Acquisition 65      
Carrying amount of land and land improvements 4,251      
Carrying amount of building and improvements 23,963      
Accumulated depreciation 344      
Seniors Housing Operating | Leeds, 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 3,356      
Initial cost of building and improvements 16,465      
Cost Capitalized Subsequent to Acquisition 83      
Carrying amount of land and land improvements 3,356      
Carrying amount of building and improvements 16,548      
Accumulated depreciation 262      
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 2,011      
Carrying amount of land and land improvements 927      
Carrying amount of building and improvements 28,161      
Accumulated depreciation 10,973      
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 3,577      
Initial cost of land and land improvements 3,169      
Initial cost of building and improvements 23,372      
Cost Capitalized Subsequent to Acquisition 3,253      
Carrying amount of land and land improvements 3,051      
Carrying amount of building and improvements 26,743      
Accumulated depreciation 2,493      
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 3,180      
Carrying amount of land and land improvements 1,894      
Carrying amount of building and improvements 18,430      
Accumulated depreciation 2,984      
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 4,813      
Carrying amount of land and land improvements 3,398      
Carrying amount of building and improvements 26,800      
Accumulated depreciation 2,393      
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 6,328      
Carrying amount of land and land improvements 6,500      
Carrying amount of building and improvements 46,352      
Accumulated depreciation 15,586      
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 995      
Carrying amount of land and land improvements 390      
Carrying amount of building and improvements 14,802      
Accumulated depreciation 5,560      
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 2,705      
Carrying amount of land and land improvements 1,044      
Carrying amount of building and improvements 13,182      
Accumulated depreciation 2,346      
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 3,211      
Carrying amount of land and land improvements 180      
Carrying amount of building and improvements 22,998      
Accumulated depreciation 8,509      
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 3,483      
Carrying amount of land and land improvements 891      
Carrying amount of building and improvements 25,376      
Accumulated depreciation 9,517      
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 13,719      
Carrying amount of land and land improvements 1,362      
Carrying amount of building and improvements 31,505      
Accumulated depreciation 10,017      
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 359      
Carrying amount of land and land improvements 1,200      
Carrying amount of building and improvements 14,195      
Accumulated depreciation 3,252      
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 7,998      
Carrying amount of land and land improvements 3,468      
Carrying amount of building and improvements 46,341      
Accumulated depreciation 16,093      
Seniors Housing Operating | Little River, 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 4,076      
Initial cost of building and improvements 41,300      
Cost Capitalized Subsequent to Acquisition 49      
Carrying amount of land and land improvements 4,076      
Carrying amount of building and improvements 41,349      
Accumulated depreciation 833      
Seniors Housing Operating | Littlehampton, 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 1,836      
Initial cost of building and improvements 14,347      
Cost Capitalized Subsequent to Acquisition 226      
Carrying amount of land and land improvements 1,836      
Carrying amount of building and improvements 14,573      
Accumulated depreciation 438      
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 3,016      
Carrying amount of land and land improvements 3,378      
Carrying amount of building and improvements 29,376      
Accumulated depreciation 2,727      
Seniors Housing Operating | Liverpool, 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 2,398      
Initial cost of building and improvements 6,511      
Cost Capitalized Subsequent to Acquisition 500      
Carrying amount of land and land improvements 2,398      
Carrying amount of building and improvements 7,011      
Accumulated depreciation 382      
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 2,901      
Carrying amount of land and land improvements 8,103      
Carrying amount of building and improvements 47,222      
Accumulated depreciation 11,350      
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 2,669      
Carrying amount of land and land improvements 2,236      
Carrying amount of building and improvements 62,506      
Accumulated depreciation 22,130      
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 8,339      
Initial cost of land and land improvements 1,809      
Initial cost of building and improvements 15,604      
Cost Capitalized Subsequent to Acquisition 4,297      
Carrying amount of land and land improvements 1,902      
Carrying amount of building and improvements 19,808      
Accumulated depreciation 5,660      
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 1,321      
Initial cost of building and improvements 12,465      
Cost Capitalized Subsequent to Acquisition 2,939      
Carrying amount of land and land improvements 1,506      
Carrying amount of building and improvements 15,219      
Accumulated depreciation 3,744      
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 0      
Initial cost of land and land improvements 2,872      
Initial cost of building and improvements 24,521      
Cost Capitalized Subsequent to Acquisition 1,578      
Carrying amount of land and land improvements 2,872      
Carrying amount of building and improvements 26,099      
Accumulated depreciation 3,087      
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 26,286      
Carrying amount of land and land improvements 2,733      
Carrying amount of building and improvements 23,553      
Accumulated depreciation 3,771      
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 2,554      
Carrying amount of land and land improvements 1,897      
Carrying amount of building and improvements 14,238      
Accumulated depreciation 1,779      
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 6,035      
Initial cost of land and land improvements 3,651      
Initial cost of building and improvements 21,683      
Cost Capitalized Subsequent to Acquisition 4,645      
Carrying amount of land and land improvements 3,947      
Carrying amount of building and improvements 26,032      
Accumulated depreciation 8,825      
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 16,030      
Initial cost of land and land improvements 8,632      
Initial cost of building and improvements 67,447      
Cost Capitalized Subsequent to Acquisition 10,471      
Carrying amount of land and land improvements 8,574      
Carrying amount of building and improvements 77,976      
Accumulated depreciation 6,645      
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 2,132      
Carrying amount of land and land improvements 610      
Carrying amount of building and improvements 7,652      
Accumulated depreciation 3,057      
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 1,394      
Initial cost of building and improvements 12,960      
Cost Capitalized Subsequent to Acquisition 167      
Carrying amount of land and land improvements 1,409      
Carrying amount of building and improvements 13,112      
Accumulated depreciation 2,470      
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 12,148      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 126,586      
Accumulated depreciation 49,419      
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 5,207      
Carrying amount of land and land improvements 3,540      
Carrying amount of building and improvements 24,214      
Accumulated depreciation 10,427      
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 7,619      
Carrying amount of land and land improvements 91      
Carrying amount of building and improvements 35,578      
Accumulated depreciation 10,835      
Seniors Housing Operating | Loughborough, 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 25,140      
Cost Capitalized Subsequent to Acquisition 5      
Carrying amount of land and land improvements 1,156      
Carrying amount of building and improvements 25,145      
Accumulated depreciation 603      
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 5,115      
Carrying amount of land and land improvements 2,420      
Carrying amount of building and improvements 25,931      
Accumulated depreciation 10,363      
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 2,490      
Carrying amount of land and land improvements 1,607      
Carrying amount of building and improvements 22,809      
Accumulated depreciation 8,691      
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 1,432      
Initial cost of building and improvements 6,684      
Cost Capitalized Subsequent to Acquisition 57,716      
Carrying amount of land and land improvements 2,631      
Carrying amount of building and improvements 63,201      
Accumulated depreciation 15,485      
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 1,323      
Initial cost of building and improvements 7,547      
Cost Capitalized Subsequent to Acquisition 11,695      
Carrying amount of land and land improvements 1,534      
Carrying amount of building and improvements 19,031      
Accumulated depreciation 4,005      
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 2,988      
Carrying amount of land and land improvements 1,666      
Carrying amount of building and improvements 12,164      
Accumulated depreciation 2,396      
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 3,561      
Carrying amount of land and land improvements 2,459      
Carrying amount of building and improvements 14,144      
Accumulated depreciation 3,121      
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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 120,155      
Carrying amount of land and land improvements 5,648      
Carrying amount of building and improvements 114,507      
Accumulated depreciation 22,599      
Seniors Housing Operating | Loveland, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 27,691      
Initial cost of land and land improvements 5,223      
Initial cost of building and improvements 33,815      
Cost Capitalized Subsequent to Acquisition 11      
Carrying amount of land and land improvements 5,223      
Carrying amount of building and improvements 33,826      
Accumulated depreciation 923      
Seniors Housing Operating | Loveland, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 18,900      
Carrying amount of land and land improvements 1,573      
Carrying amount of building and improvements 17,327      
Accumulated depreciation 228      
Seniors Housing Operating | Lowestoft, 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 27      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 27      
Accumulated depreciation 1      
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 197      
Carrying amount of land and land improvements 753      
Carrying amount of building and improvements 6,597      
Accumulated depreciation 757      
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 3,449      
Carrying amount of land and land improvements 3,854      
Carrying amount of building and improvements 47,960      
Accumulated depreciation 17,819      
Seniors Housing Operating | Macclesfield, 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 2,411      
Initial cost of building and improvements 4,901      
Cost Capitalized Subsequent to Acquisition 17      
Carrying amount of land and land improvements 2,411      
Carrying amount of building and improvements 4,918      
Accumulated depreciation 287      
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 27,157      
Carrying amount of land and land improvements 2,558      
Carrying amount of building and improvements 24,599      
Accumulated depreciation 3,690      
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 15,034      
Carrying amount of land and land improvements 2,092      
Carrying amount of building and improvements 23,341      
Accumulated depreciation 1,304      
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 1,759      
Carrying amount of land and land improvements 1,644      
Carrying amount of building and improvements 28,969      
Accumulated depreciation 7,306      
Seniors Housing Operating | Maidenhead, 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 963      
Cost Capitalized Subsequent to Acquisition 48      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,011      
Accumulated depreciation 130      
Seniors Housing Operating | Maids Moreton, 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 2,370      
Initial cost of building and improvements 11,043      
Cost Capitalized Subsequent to Acquisition 4,683      
Carrying amount of land and land improvements 3,024      
Carrying amount of building and improvements 15,072      
Accumulated depreciation 4,376      
Seniors Housing Operating | Maidstone, 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 4,707      
Cost Capitalized Subsequent to Acquisition 14      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,721      
Accumulated depreciation 623      
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 3,537      
Carrying amount of land and land improvements 1,840      
Carrying amount of building and improvements 20,542      
Accumulated depreciation 9,334      
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 1,320      
Carrying amount of land and land improvements 2,979      
Carrying amount of building and improvements 17,896      
Accumulated depreciation 3,276      
Seniors Housing Operating | Manchester, 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 24,418      
Carrying amount of land and land improvements 2,630      
Carrying amount of building and improvements 21,788      
Accumulated depreciation 183      
Seniors Housing Operating | Mankato, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,460      
Initial cost of building and improvements 32,104      
Cost Capitalized Subsequent to Acquisition 668      
Carrying amount of land and land improvements 1,498      
Carrying amount of building and improvements 32,734      
Accumulated depreciation 7,649      
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 2,224      
Carrying amount of land and land improvements 660      
Carrying amount of building and improvements 7,475      
Accumulated depreciation 2,760      
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 21,675      
Carrying amount of land and land improvements 2,807      
Carrying amount of building and improvements 18,868      
Accumulated depreciation 3,047      
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 7,326      
Carrying amount of land and land improvements 1,312      
Carrying amount of building and improvements 19,439      
Accumulated depreciation 9,803      
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 7,581      
Initial cost of land and land improvements 2,629      
Initial cost of building and improvements 10,902      
Cost Capitalized Subsequent to Acquisition 3,681      
Carrying amount of land and land improvements 2,950      
Carrying amount of building and improvements 14,262      
Accumulated depreciation 3,234      
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 4,365      
Initial cost of land and land improvements 1,169      
Initial cost of building and improvements 11,077      
Cost Capitalized Subsequent to Acquisition 1,614      
Carrying amount of land and land improvements 1,273      
Carrying amount of building and improvements 12,587      
Accumulated depreciation 3,903      
Seniors Housing Operating | Market Harborough, 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 1,234      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,234      
Accumulated depreciation 130      
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 3,416      
Carrying amount of land and land improvements 2,366      
Carrying amount of building and improvements 18,160      
Accumulated depreciation 6,949      
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 7,847      
Initial cost of building and improvements 34,372      
Cost Capitalized Subsequent to Acquisition 7,309      
Carrying amount of land and land improvements 8,902      
Carrying amount of building and improvements 40,626      
Accumulated depreciation 9,781      
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 5,964      
Carrying amount of land and land improvements 620      
Carrying amount of building and improvements 10,744      
Accumulated depreciation 4,892      
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 1,144      
Carrying amount of land and land improvements 1,126      
Carrying amount of building and improvements 17,822      
Accumulated depreciation 2,678      
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 538      
Carrying amount of land and land improvements 838      
Carrying amount of building and improvements 2,396      
Accumulated depreciation 739      
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 622      
Carrying amount of land and land improvements 530      
Carrying amount of building and improvements 2,855      
Accumulated depreciation 686      
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 2,459      
Carrying amount of land and land improvements 1,570      
Carrying amount of building and improvements 9,848      
Accumulated depreciation 3,485      
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 393      
Carrying amount of land and land improvements 4,314      
Carrying amount of building and improvements 24,170      
Accumulated depreciation 3,581      
Seniors Housing Operating | McKinney, 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 4,145      
Initial cost of building and improvements 23,486      
Cost Capitalized Subsequent to Acquisition 17,772      
Carrying amount of land and land improvements 6,881      
Carrying amount of building and improvements 38,522      
Accumulated depreciation 1,844      
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 2,754      
Initial cost of land and land improvements 5,299      
Initial cost of building and improvements 26,532      
Cost Capitalized Subsequent to Acquisition 7,838      
Carrying amount of land and land improvements 4,910      
Carrying amount of building and improvements 34,759      
Accumulated depreciation 3,876      
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 546      
Initial cost of building and improvements 4,826      
Cost Capitalized Subsequent to Acquisition 14,394      
Carrying amount of land and land improvements 2,096      
Carrying amount of building and improvements 17,670      
Accumulated depreciation 1,316      
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 7,659      
Initial cost of land and land improvements 1,356      
Initial cost of building and improvements 13,389      
Cost Capitalized Subsequent to Acquisition 743      
Carrying amount of land and land improvements 1,387      
Carrying amount of building and improvements 14,101      
Accumulated depreciation 5,230      
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 2,547      
Carrying amount of land and land improvements 1,707      
Carrying amount of building and improvements 12,689      
Accumulated depreciation 2,819      
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 42,367      
Carrying amount of land and land improvements 2,152      
Carrying amount of building and improvements 40,215      
Accumulated depreciation 3,676      
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 46,892      
Carrying amount of land and land improvements 7,070      
Carrying amount of building and improvements 95,149      
Accumulated depreciation 37,773      
Seniors Housing Operating | Melissa, 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 18,769      
Carrying amount of land and land improvements 6,362      
Carrying amount of building and improvements 12,407      
Accumulated depreciation 286      
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 12,406      
Carrying amount of land and land improvements 4,453      
Carrying amount of building and improvements 85,516      
Accumulated depreciation 30,620      
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 4,467      
Carrying amount of land and land improvements 1,800      
Carrying amount of building and improvements 22,211      
Accumulated depreciation 9,925      
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 3,496      
Carrying amount of land and land improvements 1,020      
Carrying amount of building and improvements 10,480      
Accumulated depreciation 4,326      
Seniors Housing Operating | Mentor, OH 1        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 11,041      
Initial cost of land and land improvements 957      
Initial cost of building and improvements 13,206      
Cost Capitalized Subsequent to Acquisition 1,130      
Carrying amount of land and land improvements 961      
Carrying amount of building and improvements 14,332      
Accumulated depreciation 2,241      
Seniors Housing Operating | Mentor, 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 4,565      
Initial cost of building and improvements 35,828      
Cost Capitalized Subsequent to Acquisition 17      
Carrying amount of land and land improvements 4,565      
Carrying amount of building and improvements 35,845      
Accumulated depreciation 1,359      
Seniors Housing Operating | Mequon, 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 2,238      
Initial cost of building and improvements 17,761      
Cost Capitalized Subsequent to Acquisition 788      
Carrying amount of land and land improvements 2,238      
Carrying amount of building and improvements 18,549      
Accumulated depreciation 2,138      
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 3,134      
Carrying amount of land and land improvements 2,934      
Carrying amount of building and improvements 16,298      
Accumulated depreciation 2,774      
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 3,188      
Carrying amount of land and land improvements 1,500      
Carrying amount of building and improvements 30,121      
Accumulated depreciation 10,508      
Seniors Housing Operating | Miamisburg, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 7,324      
Carrying amount of land and land improvements 1,215      
Carrying amount of building and improvements 6,109      
Accumulated depreciation 318      
Seniors Housing Operating | Middlebury, VT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 5,404      
Initial cost of building and improvements 24,161      
Cost Capitalized Subsequent to Acquisition 1,732      
Carrying amount of land and land improvements 5,404      
Carrying amount of building and improvements 25,893      
Accumulated depreciation 2,111      
Seniors Housing Operating | Middlesbrough, 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 59      
Initial cost of building and improvements 2,769      
Cost Capitalized Subsequent to Acquisition 50      
Carrying amount of land and land improvements 59      
Carrying amount of building and improvements 2,819      
Accumulated depreciation 236      
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 452      
Carrying amount of land and land improvements 1,099      
Carrying amount of building and improvements 6,060      
Accumulated depreciation 1,107      
Seniors Housing Operating | Mildenhall, 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 2,240      
Cost Capitalized Subsequent to Acquisition 54      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,294      
Accumulated depreciation 289      
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 7,135      
Carrying amount of land and land improvements 10,179      
Carrying amount of building and improvements 67,380      
Accumulated depreciation 29,425      
Seniors Housing Operating | Millbrook, NY 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 12,448      
Initial cost of building and improvements 12,390      
Cost Capitalized Subsequent to Acquisition 4,513      
Carrying amount of land and land improvements 13,016      
Carrying amount of building and improvements 16,335      
Accumulated depreciation 7,547      
Seniors Housing Operating | Millbrook, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 9      
Carrying amount of land and land improvements 9      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
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 801      
Carrying amount of land and land improvements 1,308      
Carrying amount of building and improvements 18,574      
Accumulated depreciation 2,537      
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 0      
Initial cost of land and land improvements 4,153      
Initial cost of building and improvements 23,155      
Cost Capitalized Subsequent to Acquisition 7,225      
Carrying amount of land and land improvements 4,539      
Carrying amount of building and improvements 29,994      
Accumulated depreciation 7,112      
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 1,056      
Carrying amount of land and land improvements 2,415      
Carrying amount of building and improvements 21,294      
Accumulated depreciation 2,520      
Seniors Housing Operating | Minnetonka, MN 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 24,360      
Cost Capitalized Subsequent to Acquisition 4,932      
Carrying amount of land and land improvements 2,154      
Carrying amount of building and improvements 29,218      
Accumulated depreciation 10,595      
Seniors Housing Operating | Minnetonka, MN 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 920      
Initial cost of building and improvements 29,344      
Cost Capitalized Subsequent to Acquisition 2,018      
Carrying amount of land and land improvements 1,051      
Carrying amount of building and improvements 31,231      
Accumulated depreciation 10,990      
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 0      
Initial cost of land and land improvements 6,600      
Initial cost of building and improvements 52,118      
Cost Capitalized Subsequent to Acquisition 12,354      
Carrying amount of land and land improvements 6,602      
Carrying amount of building and improvements 64,470      
Accumulated depreciation 17,318      
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 6,146      
Initial cost of land and land improvements 1,472      
Initial cost of building and improvements 16,533      
Cost Capitalized Subsequent to Acquisition 1,882      
Carrying amount of land and land improvements 1,546      
Carrying amount of building and improvements 18,341      
Accumulated depreciation 6,647      
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 0      
Initial cost of land and land improvements 2,357      
Initial cost of building and improvements 14,021      
Cost Capitalized Subsequent to Acquisition 6,395      
Carrying amount of land and land improvements 2,450      
Carrying amount of building and improvements 20,323      
Accumulated depreciation 5,836      
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 3,170      
Carrying amount of land and land improvements 553      
Carrying amount of building and improvements 10,657      
Accumulated depreciation 4,631      
Seniors Housing Operating | Mitcham, 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 3,367      
Initial cost of building and improvements 3,818      
Cost Capitalized Subsequent to Acquisition 32      
Carrying amount of land and land improvements 3,367      
Carrying amount of building and improvements 3,850      
Accumulated depreciation 246      
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 3,828      
Initial cost of building and improvements 19,834      
Cost Capitalized Subsequent to Acquisition 13,728      
Carrying amount of land and land improvements 5,222      
Carrying amount of building and improvements 32,168      
Accumulated depreciation 11,360      
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 2,177      
Carrying amount of land and land improvements 762      
Carrying amount of building and improvements 12,357      
Accumulated depreciation 2,424      
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 1,787      
Carrying amount of land and land improvements 1,210      
Carrying amount of building and improvements 5,690      
Accumulated depreciation 1,560      
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 4,647      
Carrying amount of land and land improvements 6,454      
Carrying amount of building and improvements 33,734      
Accumulated depreciation 12,860      
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 1,739      
Carrying amount of land and land improvements 540      
Carrying amount of building and improvements 12,646      
Accumulated depreciation 2,570      
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 8,547      
Carrying amount of land and land improvements 4,291      
Carrying amount of building and improvements 26,032      
Accumulated depreciation 15,080      
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 7,586      
Initial cost of land and land improvements 3,830      
Initial cost of building and improvements 20,613      
Cost Capitalized Subsequent to Acquisition 10,950      
Carrying amount of land and land improvements 4,173      
Carrying amount of building and improvements 31,220      
Accumulated depreciation 8,874      
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 9,844      
Carrying amount of land and land improvements 2,101      
Carrying amount of building and improvements 61,431      
Accumulated depreciation 20,782      
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 750      
Initial cost of land and land improvements 551      
Initial cost of building and improvements 12,283      
Cost Capitalized Subsequent to Acquisition 2,306      
Carrying amount of land and land improvements 561      
Carrying amount of building and improvements 14,579      
Accumulated depreciation 4,932      
Seniors Housing Operating | Mount Pleasant, 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 1,863      
Initial cost of building and improvements 6,467      
Cost Capitalized Subsequent to Acquisition 103      
Carrying amount of land and land improvements 1,876      
Carrying amount of building and improvements 6,557      
Accumulated depreciation 1,440      
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 620      
Carrying amount of land and land improvements 1,950      
Carrying amount of building and improvements 19,802      
Accumulated depreciation 4,785      
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 2,158      
Carrying amount of land and land improvements 390      
Carrying amount of building and improvements 7,912      
Accumulated depreciation 3,138      
Seniors Housing Operating | Napa, 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 844      
Initial cost of building and improvements 79,827      
Cost Capitalized Subsequent to Acquisition 174      
Carrying amount of land and land improvements 844      
Carrying amount of building and improvements 80,001      
Accumulated depreciation 3,059      
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 7,762      
Carrying amount of land and land improvements 3,472      
Carrying amount of building and improvements 37,307      
Accumulated depreciation 12,033      
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 3,656      
Carrying amount of land and land improvements 1,550      
Carrying amount of building and improvements 15,893      
Accumulated depreciation 6,018      
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 2,348      
Carrying amount of land and land improvements 1,640      
Carrying amount of building and improvements 30,452      
Accumulated depreciation 11,318      
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 6,469      
Carrying amount of land and land improvements 3,900      
Carrying amount of building and improvements 42,257      
Accumulated depreciation 17,933      
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 10,903      
Carrying amount of land and land improvements 2,729      
Carrying amount of building and improvements 29,174      
Accumulated depreciation 9,607      
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 635      
Carrying amount of land and land improvements 2,292      
Carrying amount of building and improvements 22,612      
Accumulated depreciation 4,238      
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 297      
Carrying amount of land and land improvements 5,732      
Carrying amount of building and improvements 34,567      
Accumulated depreciation 1,684      
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 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | 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 3,206      
Carrying amount of land and land improvements 2,819      
Carrying amount of building and improvements 18,453      
Accumulated depreciation 2,068      
Seniors Housing Operating | Newbury, 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 2,692      
Initial cost of building and improvements 12,085      
Cost Capitalized Subsequent to Acquisition 1,883      
Carrying amount of land and land improvements 2,892      
Carrying amount of building and improvements 13,768      
Accumulated depreciation 3,073      
Seniors Housing Operating | Newbury, 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 4,002      
Cost Capitalized Subsequent to Acquisition 139      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,141      
Accumulated depreciation 534      
Seniors Housing Operating | Newcastle upon Tyne, 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 1,501      
Cost Capitalized Subsequent to Acquisition 52      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,553      
Accumulated depreciation 424      
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 3,053      
Initial cost of building and improvements 8,926      
Cost Capitalized Subsequent to Acquisition 6,152      
Carrying amount of land and land improvements 4,132      
Carrying amount of building and improvements 13,999      
Accumulated depreciation 4,200      
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 2,421      
Carrying amount of land and land improvements 2,007      
Carrying amount of building and improvements 16,764      
Accumulated depreciation 7,332      
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 2,353      
Carrying amount of land and land improvements 1,480      
Carrying amount of building and improvements 35,683      
Accumulated depreciation 11,180      
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 2,308      
Carrying amount of land and land improvements 1,739      
Carrying amount of building and improvements 26,883      
Accumulated depreciation 4,446      
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 231      
Carrying amount of land and land improvements 1,804      
Carrying amount of building and improvements 29,597      
Accumulated depreciation 2,851      
Seniors Housing Operating | North Shields, 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 39      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 39      
Accumulated depreciation 1      
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 1,154      
Carrying amount of land and land improvements 1,228      
Carrying amount of building and improvements 8,535      
Accumulated depreciation 2,065      
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 1,531      
Carrying amount of land and land improvements 1,528      
Carrying amount of building and improvements 19,001      
Accumulated depreciation 2,120      
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 2,925      
Carrying amount of land and land improvements 3,044      
Carrying amount of building and improvements 20,820      
Accumulated depreciation 6,982      
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 1,335      
Carrying amount of land and land improvements 1,971      
Carrying amount of building and improvements 19,688      
Accumulated depreciation 3,876      
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 2,210      
Carrying amount of land and land improvements 2,221      
Carrying amount of building and improvements 14,920      
Accumulated depreciation 2,578      
Seniors Housing Operating | Norwich, 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 3,294      
Cost Capitalized Subsequent to Acquisition 13      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,307      
Accumulated depreciation 426      
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 6,574      
Carrying amount of land and land improvements 3,877      
Carrying amount of building and improvements 37,465      
Accumulated depreciation 6,044      
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 1,644      
Carrying amount of land and land improvements 739      
Carrying amount of building and improvements 9,342      
Accumulated depreciation 2,203      
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 4,622      
Carrying amount of land and land improvements 1,250      
Carrying amount of building and improvements 45,005      
Accumulated depreciation 17,615      
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 1,058      
Carrying amount of land and land improvements 1,906      
Carrying amount of building and improvements 13,023      
Accumulated depreciation 3,256      
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 6,550      
Carrying amount of land and land improvements 4,117      
Carrying amount of building and improvements 53,818      
Accumulated depreciation 19,890      
Seniors Housing Operating | Oakland Charter Township, 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 1,489      
Initial cost of building and improvements 8,760      
Cost Capitalized Subsequent to Acquisition 21      
Carrying amount of land and land improvements 1,489      
Carrying amount of building and improvements 8,781      
Accumulated depreciation 523      
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 4,499      
Carrying amount of land and land improvements 2,393      
Carrying amount of building and improvements 41,932      
Accumulated depreciation 15,725      
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 6,055      
Initial cost of land and land improvements 1,961      
Initial cost of building and improvements 27,527      
Cost Capitalized Subsequent to Acquisition 4,547      
Carrying amount of land and land improvements 2,137      
Carrying amount of building and improvements 31,898      
Accumulated depreciation 11,386      
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 3,190      
Initial cost of land and land improvements 1,168      
Initial cost of building and improvements 12,636      
Cost Capitalized Subsequent to Acquisition 2,930      
Carrying amount of land and land improvements 1,274      
Carrying amount of building and improvements 15,460      
Accumulated depreciation 5,000      
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 1,137      
Carrying amount of land and land improvements 1,340      
Carrying amount of building and improvements 11,701      
Accumulated depreciation 4,629      
Seniors Housing Operating | Oceanside, 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 4,008      
Initial cost of building and improvements 44,188      
Cost Capitalized Subsequent to Acquisition 148      
Carrying amount of land and land improvements 4,008      
Carrying amount of building and improvements 44,336      
Accumulated depreciation 1,025      
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 4,521      
Carrying amount of land and land improvements 360      
Carrying amount of building and improvements 11,221      
Accumulated depreciation 4,479      
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 430      
Carrying amount of land and land improvements 590      
Carrying amount of building and improvements 7,943      
Accumulated depreciation 3,561      
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 606      
Carrying amount of land and land improvements 760      
Carrying amount of building and improvements 7,623      
Accumulated depreciation 3,310      
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 18,303      
Carrying amount of land and land improvements 1,590      
Carrying amount of building and improvements 16,713      
Accumulated depreciation 2,793      
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 22,911      
Cost Capitalized Subsequent to Acquisition 4,806      
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 0      
Initial cost of land and land improvements 656      
Initial cost of building and improvements 19,240      
Cost Capitalized Subsequent to Acquisition 2,569      
Carrying amount of land and land improvements 745      
Carrying amount of building and improvements 21,720      
Accumulated depreciation 6,558      
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 563      
Carrying amount of land and land improvements 923      
Carrying amount of building and improvements 5,342      
Accumulated depreciation 1,236      
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 626      
Carrying amount of land and land improvements 569      
Carrying amount of building and improvements 2,825      
Accumulated depreciation 792      
Seniors Housing Operating | Olympia, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 20,427      
Initial cost of land and land improvements 5,024      
Initial cost of building and improvements 34,368      
Cost Capitalized Subsequent to Acquisition 29      
Carrying amount of land and land improvements 5,024      
Carrying amount of building and improvements 34,397      
Accumulated depreciation 849      
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 2,974      
Carrying amount of land and land improvements 370      
Carrying amount of building and improvements 13,204      
Accumulated depreciation 4,083      
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 543      
Carrying amount of land and land improvements 380      
Carrying amount of building and improvements 9,312      
Accumulated depreciation 3,728      
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 0      
Initial cost of land and land improvements 1,623      
Initial cost of building and improvements 12,027      
Cost Capitalized Subsequent to Acquisition 1,037      
Carrying amount of land and land improvements 1,639      
Carrying amount of building and improvements 13,048      
Accumulated depreciation 1,649      
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 33,279      
Initial cost of land and land improvements 8,021      
Initial cost of building and improvements 64,689      
Cost Capitalized Subsequent to Acquisition 3,205      
Carrying amount of land and land improvements 8,023      
Carrying amount of building and improvements 67,892      
Accumulated depreciation 13,148      
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 2,427      
Carrying amount of land and land improvements 1,448      
Carrying amount of building and improvements 11,149      
Accumulated depreciation 1,307      
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 1,009      
Carrying amount of land and land improvements 3,441      
Carrying amount of building and improvements 17,937      
Accumulated depreciation 3,904      
Seniors Housing Operating | Orpington, 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 5,532      
Cost Capitalized Subsequent to Acquisition 52      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 5,584      
Accumulated depreciation 747      
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 10,537      
Initial cost of land and land improvements 1,226      
Initial cost of building and improvements 14,106      
Cost Capitalized Subsequent to Acquisition 5,052      
Carrying amount of land and land improvements 1,337      
Carrying amount of building and improvements 19,047      
Accumulated depreciation 4,573      
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 6,136      
Initial cost of land and land improvements 2,581      
Initial cost of building and improvements 25,080      
Cost Capitalized Subsequent to Acquisition 5,222      
Carrying amount of land and land improvements 2,705      
Carrying amount of building and improvements 30,178      
Accumulated depreciation 11,481      
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 3,297      
Initial cost of land and land improvements 1,062      
Initial cost of building and improvements 8,965      
Cost Capitalized Subsequent to Acquisition 1,338      
Carrying amount of land and land improvements 1,138      
Carrying amount of building and improvements 10,227      
Accumulated depreciation 3,634      
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 4,302      
Initial cost of land and land improvements 685      
Initial cost of building and improvements 7,166      
Cost Capitalized Subsequent to Acquisition 2,282      
Carrying amount of land and land improvements 770      
Carrying amount of building and improvements 9,363      
Accumulated depreciation 3,063      
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 1,113      
Initial cost of building and improvements 12,085      
Cost Capitalized Subsequent to Acquisition 957      
Carrying amount of land and land improvements 1,165      
Carrying amount of building and improvements 12,990      
Accumulated depreciation 3,461      
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 15,186      
Initial cost of land and land improvements 3,892      
Initial cost of building and improvements 35,793      
Cost Capitalized Subsequent to Acquisition 4,124      
Carrying amount of land and land improvements 4,041      
Carrying amount of building and improvements 39,768      
Accumulated depreciation 10,756      
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 5,341      
Initial cost of land and land improvements 1,923      
Initial cost of building and improvements 16,845      
Cost Capitalized Subsequent to Acquisition 10,944      
Carrying amount of land and land improvements 2,125      
Carrying amount of building and improvements 13,797      
Accumulated depreciation 3,962      
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 10,183      
Initial cost of land and land improvements 2,710      
Initial cost of building and improvements 24,164      
Cost Capitalized Subsequent to Acquisition 4,812      
Carrying amount of land and land improvements 2,916      
Carrying amount of building and improvements 28,770      
Accumulated depreciation 7,446      
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 7,673      
Initial cost of land and land improvements 1,427      
Initial cost of building and improvements 16,616      
Cost Capitalized Subsequent to Acquisition 3,894      
Carrying amount of land and land improvements 1,625      
Carrying amount of building and improvements 20,312      
Accumulated depreciation 5,080      
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 9,618      
Initial cost of land and land improvements 3,112      
Initial cost of building and improvements 28,431      
Cost Capitalized Subsequent to Acquisition 5,101      
Carrying amount of land and land improvements 3,387      
Carrying amount of building and improvements 33,257      
Accumulated depreciation 8,284      
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 3,119      
Initial cost of building and improvements 25,911      
Cost Capitalized Subsequent to Acquisition 7,132      
Carrying amount of land and land improvements 3,345      
Carrying amount of building and improvements 32,817      
Accumulated depreciation 9,206      
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 13,130      
Initial cost of land and land improvements 5,863      
Initial cost of building and improvements 39,960      
Cost Capitalized Subsequent to Acquisition 19,729      
Carrying amount of land and land improvements 6,388      
Carrying amount of building and improvements 59,164      
Accumulated depreciation 16,432      
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 706      
Carrying amount of land and land improvements 3,349      
Carrying amount of building and improvements 31,854      
Accumulated depreciation 6,054      
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 185      
Carrying amount of land and land improvements 1,407      
Carrying amount of building and improvements 12,685      
Accumulated depreciation 1,166      
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 8,622      
Initial cost of land and land improvements 1,326      
Initial cost of building and improvements 13,400      
Cost Capitalized Subsequent to Acquisition 928      
Carrying amount of land and land improvements 1,259      
Carrying amount of building and improvements 14,395      
Accumulated depreciation 1,811      
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 5,399      
Carrying amount of land and land improvements 180      
Carrying amount of building and improvements 9,719      
Accumulated depreciation 3,203      
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 1,091      
Carrying amount of land and land improvements 870      
Carrying amount of building and improvements 12,048      
Accumulated depreciation 4,656      
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 9,659      
Carrying amount of land and land improvements 13,683      
Carrying amount of building and improvements 68,050      
Accumulated depreciation 14,085      
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 2,832      
Carrying amount of land and land improvements 6,199      
Carrying amount of building and improvements 85,878      
Accumulated depreciation 7,898      
Seniors Housing Operating | Palm Harbor, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,490      
Initial cost of building and improvements 23,901      
Cost Capitalized Subsequent to Acquisition 802      
Carrying amount of land and land improvements 2,490      
Carrying amount of building and improvements 24,703      
Accumulated depreciation 3,359      
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 5,654      
Carrying amount of land and land improvements 43      
Carrying amount of building and improvements 45,250      
Accumulated depreciation 16,489      
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 2,693      
Carrying amount of land and land improvements 3,007      
Carrying amount of building and improvements 38,254      
Accumulated depreciation 13,921      
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 752      
Carrying amount of land and land improvements 719      
Carrying amount of building and improvements 6,924      
Accumulated depreciation 1,188      
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 1,760      
Carrying amount of land and land improvements 490      
Carrying amount of building and improvements 7,212      
Accumulated depreciation 5,791      
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 917      
Carrying amount of land and land improvements 1,545      
Carrying amount of building and improvements 10,126      
Accumulated depreciation 2,538      
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 7,539      
Carrying amount of land and land improvements 1,770      
Carrying amount of building and improvements 16,169      
Accumulated depreciation 7,931      
Seniors Housing Operating | Paw Paw, 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 1,687      
Initial cost of building and improvements 5,602      
Cost Capitalized Subsequent to Acquisition 81      
Carrying amount of land and land improvements 1,728      
Carrying amount of building and improvements 5,642      
Accumulated depreciation 1,294      
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 3,058      
Carrying amount of land and land improvements 2,380      
Carrying amount of building and improvements 18,999      
Accumulated depreciation 5,779      
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 3,988      
Initial cost of building and improvements 42,021      
Cost Capitalized Subsequent to Acquisition 22,101      
Carrying amount of land and land improvements 5,436      
Carrying amount of building and improvements 62,674      
Accumulated depreciation 21,975      
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 828      
Carrying amount of land and land improvements 948      
Carrying amount of building and improvements 7,466      
Accumulated depreciation 2,491      
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 1,774      
Initial cost of building and improvements 8,661      
Cost Capitalized Subsequent to Acquisition 1,788      
Carrying amount of land and land improvements 1,800      
Carrying amount of building and improvements 10,423      
Accumulated depreciation 3,954      
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 5,358      
Carrying amount of land and land improvements 1,542      
Carrying amount of building and improvements 32,816      
Accumulated depreciation 10,999      
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 3,056      
Carrying amount of land and land improvements 2,945      
Carrying amount of building and improvements 32,204      
Accumulated depreciation 3,276      
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 32,445      
Initial cost of land and land improvements 3,405      
Initial cost of building and improvements 42,919      
Cost Capitalized Subsequent to Acquisition 4,539      
Carrying amount of land and land improvements 3,482      
Carrying amount of building and improvements 47,381      
Accumulated depreciation 6,733      
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 3,270      
Carrying amount of land and land improvements 766      
Carrying amount of building and improvements 25,066      
Accumulated depreciation 6,331      
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 1,439      
Carrying amount of land and land improvements 2,023      
Carrying amount of building and improvements 13,513      
Accumulated depreciation 2,927      
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 5,978      
Initial cost of building and improvements 36,181      
Cost Capitalized Subsequent to Acquisition 6      
Carrying amount of land and land improvements 5,978      
Carrying amount of building and improvements 36,187      
Accumulated depreciation 1,574      
Seniors Housing Operating | Pickerington, 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 2,072      
Initial cost of building and improvements 27,651      
Cost Capitalized Subsequent to Acquisition 736      
Carrying amount of land and land improvements 2,075      
Carrying amount of building and improvements 28,384      
Accumulated depreciation 3,030      
Seniors Housing Operating | Pickerington, 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 2,815      
Initial cost of building and improvements 26,921      
Cost Capitalized Subsequent to Acquisition 707      
Carrying amount of land and land improvements 2,878      
Carrying amount of building and improvements 27,565      
Accumulated depreciation 2,729      
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 13,046      
Carrying amount of land and land improvements 1,725      
Carrying amount of building and improvements 30,918      
Accumulated depreciation 9,105      
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 2,846      
Carrying amount of land and land improvements 2,850      
Carrying amount of building and improvements 24,865      
Accumulated depreciation 3,585      
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 4,104      
Carrying amount of land and land improvements 3,815      
Carrying amount of building and improvements 37,156      
Accumulated depreciation 4,705      
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 1,078      
Carrying amount of land and land improvements 1,646      
Carrying amount of building and improvements 14,832      
Accumulated depreciation 2,002      
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 9,203      
Carrying amount of land and land improvements 8,528      
Carrying amount of building and improvements 26,231      
Accumulated depreciation 9,507      
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 2,957      
Carrying amount of land and land improvements 3,204      
Carrying amount of building and improvements 22,720      
Accumulated depreciation 7,896      
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 7,931      
Carrying amount of land and land improvements 3,317      
Carrying amount of building and improvements 67,684      
Accumulated depreciation 27,552      
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 4,858      
Carrying amount of land and land improvements 1,750      
Carrying amount of building and improvements 20,248      
Accumulated depreciation 5,081      
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 4,784      
Carrying amount of land and land improvements 3,079      
Carrying amount of building and improvements 37,754      
Accumulated depreciation 4,746      
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 321      
Carrying amount of land and land improvements 250      
Carrying amount of building and improvements 5,971      
Accumulated depreciation 2,370      
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 8,621      
Carrying amount of land and land improvements 1,707      
Carrying amount of building and improvements 49,025      
Accumulated depreciation 17,012      
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 52,664      
Carrying amount of land and land improvements 3,676      
Carrying amount of building and improvements 48,988      
Accumulated depreciation 8,006      
Seniors Housing Operating | Poole, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 4,108      
Cost Capitalized Subsequent to Acquisition 7      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,115      
Accumulated depreciation 543      
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 8,491      
Initial cost of land and land improvements 3,370      
Initial cost of building and improvements 24,497      
Cost Capitalized Subsequent to Acquisition 4,614      
Carrying amount of land and land improvements 3,659      
Carrying amount of building and improvements 28,822      
Accumulated depreciation 7,195      
Seniors Housing Operating | Port Saint 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 22,082      
Carrying amount of land and land improvements 8,700      
Carrying amount of building and improvements 69,312      
Accumulated depreciation 28,002      
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 39,331      
Initial cost of land and land improvements 2,880      
Initial cost of building and improvements 59,764      
Cost Capitalized Subsequent to Acquisition 3,487      
Carrying amount of land and land improvements 2,903      
Carrying amount of building and improvements 63,228      
Accumulated depreciation 13,344      
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 2,286      
Carrying amount of land and land improvements 1,866      
Carrying amount of building and improvements 17,349      
Accumulated depreciation 3,134      
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 57,935      
Carrying amount of land and land improvements 6,648      
Carrying amount of building and improvements 51,287      
Accumulated depreciation 8,279      
Seniors Housing Operating | Powell, 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 1,910      
Initial cost of building and improvements 18,008      
Cost Capitalized Subsequent to Acquisition 538      
Carrying amount of land and land improvements 1,970      
Carrying amount of building and improvements 18,486      
Accumulated depreciation 2,285      
Seniors Housing Operating | Powell, 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 2,300      
Initial cost of building and improvements 26,198      
Cost Capitalized Subsequent to Acquisition 608      
Carrying amount of land and land improvements 2,305      
Carrying amount of building and improvements 26,801      
Accumulated depreciation 2,865      
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 9,509      
Carrying amount of land and land improvements 1,871      
Carrying amount of building and improvements 40,256      
Accumulated depreciation 12,660      
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 0      
Cost Capitalized Subsequent to Acquisition 31,972      
Carrying amount of land and land improvements 3,768      
Carrying amount of building and improvements 28,204      
Accumulated depreciation 2,217      
Seniors Housing Operating | Prior Lake, 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 1,870      
Initial cost of building and improvements 29,849      
Cost Capitalized Subsequent to Acquisition 924      
Carrying amount of land and land improvements 1,946      
Carrying amount of building and improvements 30,697      
Accumulated depreciation 7,124      
Seniors Housing Operating | Prospect, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,533      
Initial cost of building and improvements 9,963      
Cost Capitalized Subsequent to Acquisition 318      
Carrying amount of land and land improvements 2,541      
Carrying amount of building and improvements 10,273      
Accumulated depreciation 1,688      
Seniors Housing Operating | Purley, 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 5,478      
Initial cost of building and improvements 26,154      
Cost Capitalized Subsequent to Acquisition 17,134      
Carrying amount of land and land improvements 7,457      
Carrying amount of building and improvements 41,309      
Accumulated depreciation 16,202      
Seniors Housing Operating | Purley, 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 2,553      
Cost Capitalized Subsequent to Acquisition 55      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,608      
Accumulated depreciation 322      
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 7,467      
Carrying amount of land and land improvements 1,156      
Carrying amount of building and improvements 28,237      
Accumulated depreciation 11,565      
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 4,303      
Initial cost of land and land improvements 2,103      
Initial cost of building and improvements 19,099      
Cost Capitalized Subsequent to Acquisition 6,049      
Carrying amount of land and land improvements 2,291      
Carrying amount of building and improvements 24,960      
Accumulated depreciation 5,963      
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 9,058      
Initial cost of land and land improvements 2,868      
Initial cost of building and improvements 24,616      
Cost Capitalized Subsequent to Acquisition 8,496      
Carrying amount of land and land improvements 3,124      
Carrying amount of building and improvements 32,856      
Accumulated depreciation 7,804      
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 7,334      
Initial cost of land and land improvements 7,871      
Initial cost of building and improvements 50,829      
Cost Capitalized Subsequent to Acquisition 9,830      
Carrying amount of land and land improvements 7,778      
Carrying amount of building and improvements 60,752      
Accumulated depreciation 4,186      
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 2,031      
Initial cost of land and land improvements 4,115      
Initial cost of building and improvements 28,447      
Cost Capitalized Subsequent to Acquisition 3,276      
Carrying amount of land and land improvements 3,971      
Carrying amount of building and improvements 31,867      
Accumulated depreciation 3,073      
Seniors Housing Operating | Queen Creek, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 56,428      
Carrying amount of land and land improvements 8,868      
Carrying amount of building and improvements 47,560      
Accumulated depreciation 639      
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 4,491      
Carrying amount of land and land improvements 1,273      
Carrying amount of building and improvements 26,222      
Accumulated depreciation 7,800      
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 887      
Carrying amount of land and land improvements 2,332      
Carrying amount of building and improvements 17,137      
Accumulated depreciation 2,997      
Seniors Housing Operating | Ramsey, 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 2,231      
Initial cost of building and improvements 31,004      
Cost Capitalized Subsequent to Acquisition 36      
Carrying amount of land and land improvements 2,231      
Carrying amount of building and improvements 31,040      
Accumulated depreciation 689      
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 3,821      
Carrying amount of land and land improvements 2,084      
Carrying amount of building and improvements 13,272      
Accumulated depreciation 5,714      
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 10,035      
Carrying amount of land and land improvements 5,450      
Carrying amount of building and improvements 70,069      
Accumulated depreciation 25,980      
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 4,155      
Carrying amount of land and land improvements 1,760      
Carrying amount of building and improvements 50,869      
Accumulated depreciation 17,892      
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 599      
Carrying amount of land and land improvements 584      
Carrying amount of building and improvements 5,170      
Accumulated depreciation 1,020      
Seniors Housing Operating | Reading, 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 3,106      
Initial cost of building and improvements 21,515      
Cost Capitalized Subsequent to Acquisition 1      
Carrying amount of land and land improvements 3,106      
Carrying amount of building and improvements 21,516      
Accumulated depreciation 635      
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 1,158      
Initial cost of building and improvements 17,903      
Cost Capitalized Subsequent to Acquisition 2,726      
Carrying amount of land and land improvements 1,208      
Carrying amount of building and improvements 20,579      
Accumulated depreciation 5,835      
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 1,113      
Initial cost of building and improvements 20,740      
Cost Capitalized Subsequent to Acquisition 3,979      
Carrying amount of land and land improvements 1,143      
Carrying amount of building and improvements 24,689      
Accumulated depreciation 7,025      
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 24,466      
Initial cost of land and land improvements 4,474      
Initial cost of building and improvements 36,557      
Cost Capitalized Subsequent to Acquisition 2,175      
Carrying amount of land and land improvements 4,474      
Carrying amount of building and improvements 38,732      
Accumulated depreciation 8,428      
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 2,594      
Carrying amount of land and land improvements 2,688      
Carrying amount of building and improvements 12,835      
Accumulated depreciation 2,402      
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 2,133      
Carrying amount of land and land improvements 1,977      
Carrying amount of building and improvements 42,547      
Accumulated depreciation 7,018      
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 61,703      
Carrying amount of land and land improvements 457      
Carrying amount of building and improvements 61,246      
Accumulated depreciation 4,965      
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 3,991      
Initial cost of land and land improvements 1,364      
Initial cost of building and improvements 19,429      
Cost Capitalized Subsequent to Acquisition 4,540      
Carrying amount of land and land improvements 1,527      
Carrying amount of building and improvements 23,806      
Accumulated depreciation 8,251      
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 4,064      
Initial cost of land and land improvements 1,143      
Initial cost of building and improvements 19,326      
Cost Capitalized Subsequent to Acquisition 2,959      
Carrying amount of land and land improvements 1,231      
Carrying amount of building and improvements 22,197      
Accumulated depreciation 7,606      
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 11,607      
Initial cost of land and land improvements 1,407      
Initial cost of building and improvements 21,996      
Cost Capitalized Subsequent to Acquisition 6,394      
Carrying amount of land and land improvements 1,507      
Carrying amount of building and improvements 28,290      
Accumulated depreciation 6,695      
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 10,400      
Carrying amount of land and land improvements 993      
Carrying amount of building and improvements 34,615      
Accumulated depreciation 11,778      
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 4,158      
Carrying amount of land and land improvements 1,060      
Carrying amount of building and improvements 15,598      
Accumulated depreciation 7,707      
Seniors Housing Operating | Richmond, 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 1,052      
Cost Capitalized Subsequent to Acquisition 10      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,062      
Accumulated depreciation 149      
Seniors Housing Operating | Richmond, 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 813      
Cost Capitalized Subsequent to Acquisition 322      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,135      
Accumulated depreciation 118      
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 400      
Carrying amount of land and land improvements 6,528      
Carrying amount of building and improvements 24,070      
Accumulated depreciation 4,694      
Seniors Housing Operating | Richmond, 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 6,472      
Carrying amount of land and land improvements 6,472      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
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 4,420      
Carrying amount of land and land improvements 520      
Carrying amount of building and improvements 12,095      
Accumulated depreciation 6,028      
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 2,195      
Carrying amount of land and land improvements 2,659      
Carrying amount of building and improvements 29,630      
Accumulated depreciation 2,889      
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 5,549      
Initial cost of land and land improvements 2,690      
Initial cost of building and improvements 29,245      
Cost Capitalized Subsequent to Acquisition 8,006      
Carrying amount of land and land improvements 2,545      
Carrying amount of building and improvements 37,396      
Accumulated depreciation 3,663      
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 1,734      
Initial cost of land and land improvements 541      
Initial cost of building and improvements 6,951      
Cost Capitalized Subsequent to Acquisition 1,723      
Carrying amount of land and land improvements 625      
Carrying amount of building and improvements 8,590      
Accumulated depreciation 2,648      
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 9,248      
Initial cost of land and land improvements 1,330      
Initial cost of building and improvements 15,407      
Cost Capitalized Subsequent to Acquisition 6,347      
Carrying amount of land and land improvements 1,670      
Carrying amount of building and improvements 21,414      
Accumulated depreciation 7,143      
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 664      
Carrying amount of land and land improvements 665      
Carrying amount of building and improvements 4,326      
Accumulated depreciation 1,000      
Seniors Housing Operating | Rochester, 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 3,527      
Initial cost of building and improvements 51,698      
Cost Capitalized Subsequent to Acquisition 19      
Carrying amount of land and land improvements 3,527      
Carrying amount of building and improvements 51,717      
Accumulated depreciation 1,508      
Seniors Housing Operating | Rochester, 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 2,693      
Initial cost of building and improvements 25,665      
Cost Capitalized Subsequent to Acquisition 64      
Carrying amount of land and land improvements 2,693      
Carrying amount of building and improvements 25,729      
Accumulated depreciation 1,213      
Seniors Housing Operating | Rochester 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 7,024      
Carrying amount of land and land improvements 7,024      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | Rock Hill, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,825      
Initial cost of building and improvements 7,676      
Cost Capitalized Subsequent to Acquisition 515      
Carrying amount of land and land improvements 1,852      
Carrying amount of building and improvements 8,164      
Accumulated depreciation 1,658      
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 853      
Carrying amount of land and land improvements 1,025      
Carrying amount of building and improvements 5,953      
Accumulated depreciation 1,285      
Seniors Housing Operating | Rockford, 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 2,386      
Initial cost of building and improvements 13,546      
Cost Capitalized Subsequent to Acquisition 154      
Carrying amount of land and land improvements 2,406      
Carrying amount of building and improvements 13,680      
Accumulated depreciation 2,134      
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 1,149      
Carrying amount of land and land improvements 2,220      
Carrying amount of building and improvements 18,799      
Accumulated depreciation 4,661      
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 7,060      
Carrying amount of land and land improvements 189      
Carrying amount of building and improvements 14,671      
Accumulated depreciation 5,817      
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 8,163      
Carrying amount of land and land improvements 6,546      
Carrying amount of building and improvements 26,817      
Accumulated depreciation 13,085      
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 63,886      
Carrying amount of land and land improvements 6,139      
Carrying amount of building and improvements 71,247      
Accumulated depreciation 26,836      
Seniors Housing Operating | Roseburg, OR        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 979      
Initial cost of building and improvements 12,388      
Cost Capitalized Subsequent to Acquisition 1,475      
Carrying amount of land and land improvements 980      
Carrying amount of building and improvements 13,862      
Accumulated depreciation 1,509      
Seniors Housing Operating | Roseville, MN 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 1,540      
Initial cost of building and improvements 35,877      
Cost Capitalized Subsequent to Acquisition 2,384      
Carrying amount of land and land improvements 1,648      
Carrying amount of building and improvements 38,153      
Accumulated depreciation 13,209      
Seniors Housing Operating | Roseville, MN 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 2,140      
Initial cost of building and improvements 24,679      
Cost Capitalized Subsequent to Acquisition 891      
Carrying amount of land and land improvements 2,290      
Carrying amount of building and improvements 25,420      
Accumulated depreciation 5,910      
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 10,216      
Carrying amount of land and land improvements 3,300      
Carrying amount of building and improvements 51,868      
Accumulated depreciation 15,732      
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 55,057      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,011      
Carrying amount of building and improvements 55,057      
Accumulated depreciation 4,820      
Seniors Housing Operating | Roseville, 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 45,565      
Carrying amount of land and land improvements 3,786      
Carrying amount of building and improvements 41,779      
Accumulated depreciation 104      
Seniors Housing Operating | Roswell, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,080      
Initial cost of building and improvements 6,486      
Cost Capitalized Subsequent to Acquisition 4,709      
Carrying amount of land and land improvements 2,380      
Carrying amount of building and improvements 10,895      
Accumulated depreciation 4,879      
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 2,459      
Carrying amount of land and land improvements 2,358      
Carrying amount of building and improvements 17,936      
Accumulated depreciation 2,575      
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 302      
Carrying amount of land and land improvements 1,652      
Carrying amount of building and improvements 21,581      
Accumulated depreciation 2,809      
Seniors Housing Operating | Royal Leamington Spa, 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 4,106      
Cost Capitalized Subsequent to Acquisition 22      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,128      
Accumulated depreciation 543      
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 47,499      
Carrying amount of land and land improvements 3,726      
Carrying amount of building and improvements 43,773      
Accumulated depreciation 6,949      
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 916      
Carrying amount of land and land improvements 6,225      
Carrying amount of building and improvements 31,062      
Accumulated depreciation 2,160      
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 7,693      
Carrying amount of land and land improvements 952      
Carrying amount of building and improvements 22,462      
Accumulated depreciation 8,697      
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 3,385      
Carrying amount of land and land improvements 1,369      
Carrying amount of building and improvements 26,710      
Accumulated depreciation 9,490      
Seniors Housing Operating | Saffron Walden, 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 7      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 7      
Accumulated depreciation 0      
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 1,579      
Carrying amount of land and land improvements 1,535      
Carrying amount of building and improvements 19,442      
Accumulated depreciation 3,807      
Seniors Housing Operating | Saint Albert, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 4,734      
Initial cost of land and land improvements 986      
Initial cost of building and improvements 15,385      
Cost Capitalized Subsequent to Acquisition 3,479      
Carrying amount of land and land improvements 1,131      
Carrying amount of building and improvements 18,719      
Accumulated depreciation 7,205      
Seniors Housing Operating | Saint 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 8,833      
Initial cost of building and improvements 59,921      
Cost Capitalized Subsequent to Acquisition 5,053      
Carrying amount of land and land improvements 8,769      
Carrying amount of building and improvements 65,038      
Accumulated depreciation 5,559      
Seniors Housing Operating | Saint 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 23,712      
Carrying amount of land and land improvements 4,197      
Carrying amount of building and improvements 64,312      
Accumulated depreciation 4,646      
Seniors Housing Operating | Saint 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 345      
Carrying amount of land and land improvements 821      
Carrying amount of building and improvements 6,000      
Accumulated depreciation 936      
Seniors Housing Operating | Saint 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 6,274      
Carrying amount of land and land improvements 9,569      
Carrying amount of building and improvements 45,806      
Accumulated depreciation 19,501      
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 25,328      
Initial cost of land and land improvements 9,381      
Initial cost of building and improvements 56,608      
Cost Capitalized Subsequent to Acquisition 12,352      
Carrying amount of land and land improvements 10,322      
Carrying amount of building and improvements 68,019      
Accumulated depreciation 25,375      
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 12,392      
Initial cost of land and land improvements 1,645      
Initial cost of building and improvements 13,270      
Cost Capitalized Subsequent to Acquisition 3,856      
Carrying amount of land and land improvements 1,761      
Carrying amount of building and improvements 17,010      
Accumulated depreciation 2,903      
Seniors Housing Operating | Sale, 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 3,168      
Cost Capitalized Subsequent to Acquisition 11      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,179      
Accumulated depreciation 414      
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 1,969      
Carrying amount of land and land improvements 918      
Carrying amount of building and improvements 11,628      
Accumulated depreciation 2,569      
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 2,360      
Carrying amount of land and land improvements 1,227      
Carrying amount of building and improvements 10,992      
Accumulated depreciation 2,683      
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 2,876      
Initial cost of building and improvements 19,824      
Cost Capitalized Subsequent to Acquisition 1,200      
Carrying amount of land and land improvements 2,888      
Carrying amount of building and improvements 21,012      
Accumulated depreciation 2,457      
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 13,617      
Carrying amount of land and land improvements 5,155      
Carrying amount of building and improvements 54,996      
Accumulated depreciation 18,302      
Seniors Housing Operating | Salisbury, 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 2,665      
Cost Capitalized Subsequent to Acquisition 42      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,707      
Accumulated depreciation 350      
Seniors Housing Operating | Salisbury, 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 2,040      
Initial cost of building and improvements 11,451      
Cost Capitalized Subsequent to Acquisition 8,168      
Carrying amount of land and land improvements 2,761      
Carrying amount of building and improvements 18,898      
Accumulated depreciation 5,556      
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 4,338      
Carrying amount of land and land improvements 1,396      
Carrying amount of building and improvements 23,993      
Accumulated depreciation 10,130      
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 37,791      
Carrying amount of land and land improvements 6,120      
Carrying amount of building and improvements 31,671      
Accumulated depreciation 11,282      
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 5,045      
Initial cost of building and improvements 58,048      
Cost Capitalized Subsequent to Acquisition 4,236      
Carrying amount of land and land improvements 5,045      
Carrying amount of building and improvements 62,284      
Accumulated depreciation 14,505      
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 10,505      
Carrying amount of land and land improvements 11,686      
Carrying amount of building and improvements 80,435      
Accumulated depreciation 17,838      
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 3,605      
Carrying amount of land and land improvements 2,262      
Carrying amount of building and improvements 34,680      
Accumulated depreciation 3,795      
Seniors Housing Operating | San Antonio, TX 5        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 18,833      
Initial cost of land and land improvements 3,316      
Initial cost of building and improvements 20,867      
Cost Capitalized Subsequent to Acquisition 15      
Carrying amount of land and land improvements 3,316      
Carrying amount of building and improvements 20,882      
Accumulated depreciation 549      
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 10,390      
Carrying amount of land and land improvements 5,810      
Carrying amount of building and improvements 73,468      
Accumulated depreciation 29,159      
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 3,010      
Carrying amount of land and land improvements 3,016      
Carrying amount of building and improvements 30,158      
Accumulated depreciation 10,617      
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 27,184      
Initial cost of land and land improvements 4,179      
Initial cost of building and improvements 40,328      
Cost Capitalized Subsequent to Acquisition 2,215      
Carrying amount of land and land improvements 4,179      
Carrying amount of building and improvements 42,543      
Accumulated depreciation 8,041      
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 18,309      
Carrying amount of land and land improvements 5,920      
Carrying amount of building and improvements 109,948      
Accumulated depreciation 32,390      
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 12,892      
Carrying amount of land and land improvements 11,800      
Carrying amount of building and improvements 90,106      
Accumulated depreciation 27,023      
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 53,250      
Carrying amount of land and land improvements 13,894      
Carrying amount of building and improvements 39,356      
Accumulated depreciation 6,555      
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 2,668      
Carrying amount of land and land improvements 3,170      
Carrying amount of building and improvements 18,184      
Accumulated depreciation 6,817      
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 10,442      
Carrying amount of land and land improvements 3,280      
Carrying amount of building and improvements 57,265      
Accumulated depreciation 20,888      
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 8,398      
Carrying amount of land and land improvements 11,966      
Carrying amount of building and improvements 35,979      
Accumulated depreciation 11,214      
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 7,008      
Carrying amount of land and land improvements 1,620      
Carrying amount of building and improvements 34,400      
Accumulated depreciation 9,914      
Seniors Housing Operating | San Ramon, 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 8,700      
Initial cost of building and improvements 72,223      
Cost Capitalized Subsequent to Acquisition 15,507      
Carrying amount of land and land improvements 8,783      
Carrying amount of building and improvements 87,647      
Accumulated depreciation 25,531      
Seniors Housing Operating | San Ramon, 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 4,361      
Initial cost of building and improvements 18,373      
Cost Capitalized Subsequent to Acquisition 45      
Carrying amount of land and land improvements 4,361      
Carrying amount of building and improvements 18,418      
Accumulated depreciation 819      
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 990      
Carrying amount of land and land improvements 915      
Carrying amount of building and improvements 20,639      
Accumulated depreciation 6,629      
Seniors Housing Operating | Sandusky, 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 967      
Initial cost of building and improvements 6,738      
Cost Capitalized Subsequent to Acquisition 120      
Carrying amount of land and land improvements 987      
Carrying amount of building and improvements 6,838      
Accumulated depreciation 1,132      
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 2,179      
Carrying amount of land and land improvements 2,220      
Carrying amount of building and improvements 10,533      
Accumulated depreciation 5,065      
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 2,612      
Carrying amount of land and land improvements 2,077      
Carrying amount of building and improvements 5,757      
Accumulated depreciation 1,498      
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 2,771      
Carrying amount of land and land improvements 5,266      
Carrying amount of building and improvements 31,095      
Accumulated depreciation 11,032      
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 6,047      
Carrying amount of land and land improvements 2,309      
Carrying amount of building and improvements 32,261      
Accumulated depreciation 9,424      
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 2,537      
Carrying amount of land and land improvements 6,484      
Carrying amount of building and improvements 54,732      
Accumulated depreciation 5,945      
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 18,949      
Carrying amount of land and land improvements 19,724      
Carrying amount of building and improvements 115,825      
Accumulated depreciation 15,823      
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 2,462      
Initial cost of land and land improvements 853      
Initial cost of building and improvements 12,084      
Cost Capitalized Subsequent to Acquisition 4,066      
Carrying amount of land and land improvements 938      
Carrying amount of building and improvements 16,065      
Accumulated depreciation 5,211      
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 9,913      
Initial cost of land and land improvements 1,190      
Initial cost of building and improvements 15,166      
Cost Capitalized Subsequent to Acquisition 4,246      
Carrying amount of land and land improvements 1,428      
Carrying amount of building and improvements 19,174      
Accumulated depreciation 6,298      
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 2,590      
Carrying amount of land and land improvements 1,763      
Carrying amount of building and improvements 18,778      
Accumulated depreciation 3,199      
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 2,062      
Carrying amount of land and land improvements 2,509      
Carrying amount of building and improvements 24,876      
Accumulated depreciation 9,686      
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 4,803      
Carrying amount of land and land improvements 3,693      
Carrying amount of building and improvements 35,315      
Accumulated depreciation 4,216      
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 983      
Carrying amount of land and land improvements 875      
Carrying amount of building and improvements 11,595      
Accumulated depreciation 2,723      
Seniors Housing Operating | Seaham, 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 46      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 46      
Accumulated depreciation 2      
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 9,664      
Carrying amount of land and land improvements 6,308      
Carrying amount of building and improvements 82,514      
Accumulated depreciation 31,105      
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 26,675      
Initial cost of land and land improvements 10,670      
Initial cost of building and improvements 37,291      
Cost Capitalized Subsequent to Acquisition 8,078      
Carrying amount of land and land improvements 10,700      
Carrying amount of building and improvements 45,339      
Accumulated depreciation 18,909      
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 3,679      
Carrying amount of land and land improvements 1,150      
Carrying amount of building and improvements 23,566      
Accumulated depreciation 7,456      
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 2,466      
Carrying amount of land and land improvements 769      
Carrying amount of building and improvements 28,359      
Accumulated depreciation 10,223      
Seniors Housing Operating | Sevenoaks, 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 4,598      
Initial cost of building and improvements 29,931      
Cost Capitalized Subsequent to Acquisition 16,136      
Carrying amount of land and land improvements 6,272      
Carrying amount of building and improvements 44,393      
Accumulated depreciation 18,344      
Seniors Housing Operating | Sevenoaks, 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 5,371      
Cost Capitalized Subsequent to Acquisition 18      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 5,389      
Accumulated depreciation 724      
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 7,516      
Carrying amount of land and land improvements 53      
Carrying amount of building and improvements 75,086      
Accumulated depreciation 20,600      
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 644      
Carrying amount of land and land improvements 2,109      
Carrying amount of building and improvements 22,785      
Accumulated depreciation 2,305      
Seniors Housing Operating | Shelburne, VT        
SEC Schedule, 12-28, Real 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 51,327      
Cost Capitalized Subsequent to Acquisition 674      
Carrying amount of land and land improvements 1,040      
Carrying amount of building and improvements 52,001      
Accumulated depreciation 3,823      
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 1,453      
Carrying amount of land and land improvements 1,110      
Carrying amount of building and improvements 27,727      
Accumulated depreciation 10,026      
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 3,342      
Carrying amount of land and land improvements 700      
Carrying amount of building and improvements 8,563      
Accumulated depreciation 3,084      
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 1,580      
Carrying amount of land and land improvements 1,852      
Carrying amount of building and improvements 24,007      
Accumulated depreciation 5,141      
Seniors Housing Operating | Sherman, 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 32,291      
Carrying amount of land and land improvements 1,503      
Carrying amount of building and improvements 30,788      
Accumulated depreciation 172      
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 6,708      
Carrying amount of land and land improvements 2,165      
Carrying amount of building and improvements 44,779      
Accumulated depreciation 15,735      
Seniors Housing Operating | Shrewsbury, 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 3,515      
Initial cost of building and improvements 23,108      
Cost Capitalized Subsequent to Acquisition 1      
Carrying amount of land and land improvements 3,515      
Carrying amount of building and improvements 23,109      
Accumulated depreciation 570      
Seniors Housing Operating | Sidcup, 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 5,538      
Initial cost of building and improvements 42,078      
Cost Capitalized Subsequent to Acquisition 28,080      
Carrying amount of land and land improvements 7,525      
Carrying amount of building and improvements 68,171      
Accumulated depreciation 27,540      
Seniors Housing Operating | Sidcup, 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 4,943      
Cost Capitalized Subsequent to Acquisition 43      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,986      
Accumulated depreciation 665      
Seniors Housing Operating | Silver Spring, 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 0      
Cost Capitalized Subsequent to Acquisition 65,074      
Carrying amount of land and land improvements 3,449      
Carrying amount of building and improvements 61,625      
Accumulated depreciation 9,747      
Seniors Housing Operating | Silver Spring, 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 6,482      
Initial cost of building and improvements 83,642      
Cost Capitalized Subsequent to Acquisition 21,563      
Carrying amount of land and land improvements 6,804      
Carrying amount of building and improvements 104,883      
Accumulated depreciation 29,296      
Seniors Housing Operating | Silvis, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 880      
Initial cost of building and improvements 16,420      
Cost Capitalized Subsequent to Acquisition 1,100      
Carrying amount of land and land improvements 1,166      
Carrying amount of building and improvements 17,234      
Accumulated depreciation 6,288      
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 5,241      
Carrying amount of land and land improvements 3,340      
Carrying amount of building and improvements 21,765      
Accumulated depreciation 8,523      
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 12,081      
Carrying amount of land and land improvements 5,510      
Carrying amount of building and improvements 63,487      
Accumulated depreciation 20,024      
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 40,520      
Cost Capitalized Subsequent to Acquisition 804      
Carrying amount of land and land improvements 3,084      
Carrying amount of building and improvements 41,324      
Accumulated depreciation 3,880      
Seniors Housing Operating | Slough, 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 49      
Initial cost of building and improvements 5,034      
Cost Capitalized Subsequent to Acquisition 35      
Carrying amount of land and land improvements 49      
Carrying amount of building and improvements 5,069      
Accumulated depreciation 452      
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 4,021      
Initial cost of building and improvements 34,337      
Cost Capitalized Subsequent to Acquisition 1      
Carrying amount of land and land improvements 2,794      
Carrying amount of building and improvements 26,115      
Accumulated depreciation 12,379      
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 24,922      
Carrying amount of land and land improvements 2,351      
Carrying amount of building and improvements 22,571      
Accumulated depreciation 7,638      
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 2,656      
Initial cost of building and improvements 19,379      
Cost Capitalized Subsequent to Acquisition 11,532      
Carrying amount of land and land improvements 3,602      
Carrying amount of building and improvements 29,965      
Accumulated depreciation 10,409      
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 1,597      
Initial cost of building and improvements 9,131      
Cost Capitalized Subsequent to Acquisition 2,805      
Carrying amount of land and land improvements 1,878      
Carrying amount of building and improvements 11,655      
Accumulated depreciation 2,887      
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 4,198      
Initial cost of building and improvements 31,356      
Cost Capitalized Subsequent to Acquisition 17,280      
Carrying amount of land and land improvements 5,705      
Carrying amount of building and improvements 47,129      
Accumulated depreciation 17,186      
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 9,142      
Carrying amount of land and land improvements 1,109      
Carrying amount of building and improvements 27,533      
Accumulated depreciation 12,981      
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 6,044      
Carrying amount of land and land improvements 2,820      
Carrying amount of building and improvements 27,934      
Accumulated depreciation 8,627      
Seniors Housing Operating | South Burlington, VT        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,437      
Initial cost of building and improvements 20,789      
Cost Capitalized Subsequent to Acquisition 213      
Carrying amount of land and land improvements 4,437      
Carrying amount of building and improvements 21,002      
Accumulated depreciation 1,990      
Seniors Housing Operating | South Croydon, 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 295      
Cost Capitalized Subsequent to Acquisition 1      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 296      
Accumulated depreciation 10      
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 762      
Carrying amount of land and land improvements 1,151      
Carrying amount of building and improvements 8,544      
Accumulated depreciation 1,505      
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 6,010      
Carrying amount of land and land improvements 4,685      
Carrying amount of building and improvements 48,676      
Accumulated depreciation 11,606      
Seniors Housing Operating | South Shields, 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 2,416      
Cost Capitalized Subsequent to Acquisition 22      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,438      
Accumulated depreciation 305      
Seniors Housing Operating | Southampton, 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 2,592      
Initial cost of building and improvements 14,945      
Cost Capitalized Subsequent to Acquisition 29      
Carrying amount of land and land improvements 2,592      
Carrying amount of building and improvements 14,974      
Accumulated depreciation 403      
Seniors Housing Operating | Southampton, 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 2,785      
Initial cost of building and improvements 26,662      
Cost Capitalized Subsequent to Acquisition 14      
Carrying amount of land and land improvements 2,785      
Carrying amount of building and improvements 26,676      
Accumulated depreciation 695      
Seniors Housing Operating | Southampton, 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 3,425      
Cost Capitalized Subsequent to Acquisition 2      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,427      
Accumulated depreciation 455      
Seniors Housing Operating | Southampton, 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 7      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 7      
Accumulated depreciation 0      
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 4,111      
Initial cost of building and improvements 31,647      
Cost Capitalized Subsequent to Acquisition 18,562      
Carrying amount of land and land improvements 5,609      
Carrying amount of building and improvements 48,711      
Accumulated depreciation 17,883      
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 10,996      
Carrying amount of land and land improvements 6,207      
Carrying amount of building and improvements 67,801      
Accumulated depreciation 18,441      
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 6,283      
Carrying amount of land and land improvements 3,200      
Carrying amount of building and improvements 31,347      
Accumulated depreciation 12,955      
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 5,346      
Carrying amount of land and land improvements 2,580      
Carrying amount of building and improvements 30,688      
Accumulated depreciation 11,909      
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 1,773      
Carrying amount of land and land improvements 1,336      
Carrying amount of building and improvements 13,768      
Accumulated depreciation 1,549      
Seniors Housing Operating | Spokane, WA 4        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 17,300      
Initial cost of land and land improvements 1,968      
Initial cost of building and improvements 32,430      
Cost Capitalized Subsequent to Acquisition 46      
Carrying amount of land and land improvements 1,968      
Carrying amount of building and improvements 32,476      
Accumulated depreciation 783      
Seniors Housing Operating | Spokane, 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 1,594      
Initial cost of building and improvements 28,307      
Cost Capitalized Subsequent to Acquisition 49      
Carrying amount of land and land improvements 1,594      
Carrying amount of building and improvements 28,356      
Accumulated depreciation 693      
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 866      
Carrying amount of land and land improvements 2,990      
Carrying amount of building and improvements 29,063      
Accumulated depreciation 6,508      
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 1,270      
Carrying amount of land and land improvements 1,197      
Carrying amount of building and improvements 20,006      
Accumulated depreciation 3,280      
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 3,000      
Carrying amount of land and land improvements 1,696      
Carrying amount of building and improvements 20,943      
Accumulated depreciation 3,099      
Seniors Housing Operating | St Ives, 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 3,139      
Cost Capitalized Subsequent to Acquisition 48      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,187      
Accumulated depreciation 412      
Seniors Housing Operating | St. Paul, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,100      
Initial cost of building and improvements 33,019      
Cost Capitalized Subsequent to Acquisition 1,151      
Carrying amount of land and land improvements 2,190      
Carrying amount of building and improvements 34,080      
Accumulated depreciation 7,835      
Seniors Housing Operating | Stanley, 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 1,901      
Cost Capitalized Subsequent to Acquisition 81      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,982      
Accumulated depreciation 235      
Seniors Housing Operating | Stanmore, 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 148      
Initial cost of building and improvements 11,343      
Cost Capitalized Subsequent to Acquisition 82      
Carrying amount of land and land improvements 148      
Carrying amount of building and improvements 11,425      
Accumulated depreciation 492      
Seniors Housing Operating | Stansted, 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 2,353      
Initial cost of building and improvements 17,862      
Cost Capitalized Subsequent to Acquisition 48      
Carrying amount of land and land improvements 2,353      
Carrying amount of building and improvements 17,910      
Accumulated depreciation 557      
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 1,991      
Carrying amount of land and land improvements 1,072      
Carrying amount of building and improvements 5,455      
Accumulated depreciation 1,409      
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 1,079      
Initial cost of building and improvements 15,983      
Cost Capitalized Subsequent to Acquisition 1,862      
Carrying amount of land and land improvements 1,192      
Carrying amount of building and improvements 17,732      
Accumulated depreciation 6,144      
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 5,802      
Carrying amount of land and land improvements 2,372      
Carrying amount of building and improvements 11,693      
Accumulated depreciation 4,810      
Seniors Housing Operating | Stonehaven, 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 145      
Initial cost of building and improvements 2,509      
Cost Capitalized Subsequent to Acquisition 96      
Carrying amount of land and land improvements 145      
Carrying amount of building and improvements 2,605      
Accumulated depreciation 191      
Seniors Housing Operating | Stowmarket, 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 2,676      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,676      
Accumulated depreciation 339      
Seniors Housing Operating | Stratford-upon-Avon, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,353      
Initial cost of building and improvements 14,455      
Cost Capitalized Subsequent to Acquisition 212      
Carrying amount of land and land improvements 2,353      
Carrying amount of building and improvements 14,667      
Accumulated depreciation 474      
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 654      
Carrying amount of land and land improvements 1,123      
Carrying amount of building and improvements 11,599      
Accumulated depreciation 3,307      
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 1,252      
Carrying amount of land and land improvements 2,578      
Carrying amount of building and improvements 14,714      
Accumulated depreciation 2,995      
Seniors Housing Operating | Stroud, 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 3,780      
Cost Capitalized Subsequent to Acquisition 19      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,799      
Accumulated depreciation 494      
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 1,671      
Carrying amount of land and land improvements 5,276      
Carrying amount of building and improvements 25,853      
Accumulated depreciation 5,912      
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 3,984      
Carrying amount of land and land improvements 4,128      
Carrying amount of building and improvements 29,169      
Accumulated depreciation 10,924      
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 4,890      
Carrying amount of land and land improvements 5,048      
Carrying amount of building and improvements 35,941      
Accumulated depreciation 8,627      
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 3,168      
Carrying amount of land and land improvements 960      
Carrying amount of building and improvements 34,591      
Accumulated depreciation 13,823      
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 7,398      
Carrying amount of land and land improvements 4,272      
Carrying amount of building and improvements 67,891      
Accumulated depreciation 18,331      
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 834      
Carrying amount of land and land improvements 2,199      
Carrying amount of building and improvements 18,827      
Accumulated depreciation 2,894      
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 3,229      
Carrying amount of land and land improvements 6,908      
Carrying amount of building and improvements 79,174      
Accumulated depreciation 5,444      
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 15,013      
Carrying amount of land and land improvements 3,110      
Carrying amount of building and improvements 29,135      
Accumulated depreciation 6,172      
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 4,045      
Carrying amount of land and land improvements 1,250      
Carrying amount of building and improvements 25,823      
Accumulated depreciation 9,600      
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 11,216      
Initial cost of building and improvements 40,724      
Cost Capitalized Subsequent to Acquisition 2,112      
Carrying amount of land and land improvements 11,418      
Carrying amount of building and improvements 42,634      
Accumulated depreciation 8,903      
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 5,171      
Carrying amount of land and land improvements 5,420      
Carrying amount of building and improvements 46,853      
Accumulated depreciation 18,131      
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 5,131      
Carrying amount of land and land improvements 15,005      
Carrying amount of building and improvements 66,674      
Accumulated depreciation 2,591      
Seniors Housing Operating | Superior, WI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,020      
Initial cost of building and improvements 13,735      
Cost Capitalized Subsequent to Acquisition 6,501      
Carrying amount of land and land improvements 1,066      
Carrying amount of building and improvements 20,190      
Accumulated depreciation 6,233      
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 4,054      
Initial cost of land and land improvements 2,596      
Initial cost of building and improvements 13,550      
Cost Capitalized Subsequent to Acquisition 8,560      
Carrying amount of land and land improvements 3,488      
Carrying amount of building and improvements 21,218      
Accumulated depreciation 8,392      
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 4,088      
Initial cost of building and improvements 14,502      
Cost Capitalized Subsequent to Acquisition 2,262      
Carrying amount of land and land improvements 4,157      
Carrying amount of building and improvements 16,695      
Accumulated depreciation 3,694      
Seniors Housing Operating | Sutton Coldfield, 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 11,461      
Cost Capitalized Subsequent to Acquisition 1,307      
Carrying amount of land and land improvements 2,848      
Carrying amount of building and improvements 12,764      
Accumulated depreciation 2,802      
Seniors Housing Operating | Sutton Coldfield, 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 3,164      
Cost Capitalized Subsequent to Acquisition 41      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,205      
Accumulated depreciation 418      
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 2,043      
Carrying amount of land and land improvements 1,560      
Carrying amount of building and improvements 13,581      
Accumulated depreciation 6,080      
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 506      
Carrying amount of land and land improvements 941      
Carrying amount of building and improvements 8,014      
Accumulated depreciation 1,254      
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 3,109      
Initial cost of building and improvements 11,631      
Cost Capitalized Subsequent to Acquisition 6,840      
Carrying amount of land and land improvements 4,207      
Carrying amount of building and improvements 17,373      
Accumulated depreciation 5,264      
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 428      
Initial cost of building and improvements 8,794      
Cost Capitalized Subsequent to Acquisition 2,194      
Carrying amount of land and land improvements 491      
Carrying amount of building and improvements 10,925      
Accumulated depreciation 3,572      
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 1,320      
Carrying amount of land and land improvements 1,051      
Carrying amount of building and improvements 12,703      
Accumulated depreciation 2,173      
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 78      
Carrying amount of land and land improvements 1,205      
Carrying amount of building and improvements 12,069      
Accumulated depreciation 2,506      
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 1,723      
Carrying amount of land and land improvements 1,576      
Carrying amount of building and improvements 13,262      
Accumulated depreciation 3,220      
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 24,404      
Carrying amount of land and land improvements 4,170      
Carrying amount of building and improvements 97,781      
Accumulated depreciation 33,426      
Seniors Housing Operating | Tallahassee, 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 1,264      
Initial cost of building and improvements 9,652      
Cost Capitalized Subsequent to Acquisition 937      
Carrying amount of land and land improvements 1,264      
Carrying amount of building and improvements 10,589      
Accumulated depreciation 1,690      
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 13,955      
Initial cost of land and land improvements 1,096      
Initial cost of building and improvements 19,504      
Cost Capitalized Subsequent to Acquisition 1,208      
Carrying amount of land and land improvements 1,106      
Carrying amount of building and improvements 20,702      
Accumulated depreciation 2,741      
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 5,986      
Carrying amount of land and land improvements 1,739      
Carrying amount of building and improvements 17,014      
Accumulated depreciation 9,346      
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 218      
Carrying amount of land and land improvements 1,960      
Carrying amount of building and improvements 12,211      
Accumulated depreciation 2,370      
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 25,853      
Carrying amount of land and land improvements 5,999      
Carrying amount of building and improvements 19,854      
Accumulated depreciation 321      
Seniors Housing Operating | Tettenahall, 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 2,188      
Initial cost of building and improvements 6,636      
Cost Capitalized Subsequent to Acquisition 5,043      
Carrying amount of land and land improvements 2,980      
Carrying amount of building and improvements 10,887      
Accumulated depreciation 4,489      
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 2,038      
Carrying amount of land and land improvements 1,530      
Carrying amount of building and improvements 9,423      
Accumulated depreciation 1,793      
Seniors Housing Operating | Thame, 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 3,851      
Initial cost of building and improvements 13,421      
Cost Capitalized Subsequent to Acquisition 1      
Carrying amount of land and land improvements 3,851      
Carrying amount of building and improvements 13,422      
Accumulated depreciation 333      
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 24,241      
Carrying amount of land and land improvements 1,268      
Carrying amount of building and improvements 81,811      
Accumulated depreciation 5,988      
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 1,690      
Carrying amount of land and land improvements 480      
Carrying amount of building and improvements 14,069      
Accumulated depreciation 5,537      
Seniors Housing Operating | Thorrington, 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 11      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 11      
Accumulated depreciation 0      
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 1,525      
Carrying amount of land and land improvements 1,238      
Carrying amount of building and improvements 16,931      
Accumulated depreciation 2,960      
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 4,518      
Carrying amount of land and land improvements 1,716      
Carrying amount of building and improvements 39,039      
Accumulated depreciation 13,843      
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 2,024      
Carrying amount of land and land improvements 1,636      
Carrying amount of building and improvements 15,274      
Accumulated depreciation 3,746      
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 2,217      
Carrying amount of land and land improvements 2,463      
Carrying amount of building and improvements 14,778      
Accumulated depreciation 3,781      
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 512      
Carrying amount of land and land improvements 260      
Carrying amount of building and improvements 13,224      
Accumulated depreciation 4,464      
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 3,582      
Initial cost of land and land improvements 1,037      
Initial cost of building and improvements 5,154      
Cost Capitalized Subsequent to Acquisition 937      
Carrying amount of land and land improvements 1,005      
Carrying amount of building and improvements 6,123      
Accumulated depreciation 2,207      
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 3,145      
Initial cost of building and improvements 30,301      
Cost Capitalized Subsequent to Acquisition 4,234      
Carrying amount of land and land improvements 3,393      
Carrying amount of building and improvements 34,287      
Accumulated depreciation 12,343      
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 4,906      
Initial cost of building and improvements 49,477      
Cost Capitalized Subsequent to Acquisition 6,121      
Carrying amount of land and land improvements 5,129      
Carrying amount of building and improvements 55,375      
Accumulated depreciation 22,171      
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 1,872      
Initial cost of building and improvements 18,289      
Cost Capitalized Subsequent to Acquisition 7,059      
Carrying amount of land and land improvements 1,933      
Carrying amount of building and improvements 25,287      
Accumulated depreciation 6,058      
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 27,404      
Initial cost of land and land improvements 4,747      
Initial cost of building and improvements 38,533      
Cost Capitalized Subsequent to Acquisition 7,983      
Carrying amount of land and land improvements 4,966      
Carrying amount of building and improvements 46,297      
Accumulated depreciation 16,200      
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 0      
Initial cost of land and land improvements 2,302      
Initial cost of building and improvements 7,029      
Cost Capitalized Subsequent to Acquisition 4,803      
Carrying amount of land and land improvements 2,663      
Carrying amount of building and improvements 11,471      
Accumulated depreciation 3,202      
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 1,378      
Carrying amount of land and land improvements 3,519      
Carrying amount of building and improvements 74,494      
Accumulated depreciation 15,870      
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 2,993      
Carrying amount of land and land improvements 1,074      
Carrying amount of building and improvements 29,288      
Accumulated depreciation 5,127      
Seniors Housing Operating | Tring, 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 7      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 7      
Accumulated depreciation 0      
Seniors Housing Operating | Trinity, 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 5,050      
Initial cost of building and improvements 38,502      
Cost Capitalized Subsequent to Acquisition 324      
Carrying amount of land and land improvements 5,050      
Carrying amount of building and improvements 38,826      
Accumulated depreciation 2,153      
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 2,741      
Carrying amount of land and land improvements 1,777      
Carrying amount of building and improvements 16,874      
Accumulated depreciation 2,459      
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 3,848      
Carrying amount of land and land improvements 9,350      
Carrying amount of building and improvements 34,730      
Accumulated depreciation 5,833      
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 8,368      
Carrying amount of land and land improvements 830      
Carrying amount of building and improvements 14,547      
Accumulated depreciation 5,647      
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 8,046      
Carrying amount of land and land improvements 7,164      
Carrying amount of building and improvements 86,792      
Accumulated depreciation 25,261      
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 3,238      
Carrying amount of land and land improvements 1,448      
Carrying amount of building and improvements 24,405      
Accumulated depreciation 12,646      
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 1,320      
Initial cost of building and improvements 10,087      
Cost Capitalized Subsequent to Acquisition 394      
Carrying amount of land and land improvements 1,320      
Carrying amount of building and improvements 10,481      
Accumulated depreciation 3,731      
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 12,070      
Initial cost of land and land improvements 1,752      
Initial cost of building and improvements 28,421      
Cost Capitalized Subsequent to Acquisition 305      
Carrying amount of land and land improvements 1,752      
Carrying amount of building and improvements 28,726      
Accumulated depreciation 6,130      
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 0      
Initial cost of land and land improvements 3,161      
Initial cost of building and improvements 14,219      
Cost Capitalized Subsequent to Acquisition 796      
Carrying amount of land and land improvements 3,201      
Carrying amount of building and improvements 14,975      
Accumulated depreciation 3,044      
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 3,053      
Initial cost of building and improvements 15,596      
Cost Capitalized Subsequent to Acquisition 3,093      
Carrying amount of land and land improvements 3,053      
Carrying amount of building and improvements 18,689      
Accumulated depreciation 2,766      
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 3,268      
Carrying amount of land and land improvements 2,266      
Carrying amount of building and improvements 16,270      
Accumulated depreciation 4,170      
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 644      
Carrying amount of land and land improvements 633      
Carrying amount of building and improvements 6,070      
Accumulated depreciation 1,128      
Seniors Housing Operating | Twickenham, 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 854      
Cost Capitalized Subsequent to Acquisition 360      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 1,214      
Accumulated depreciation 112      
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 650      
Carrying amount of land and land improvements 1,049      
Carrying amount of building and improvements 9,039      
Accumulated depreciation 2,683      
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 2,461      
Carrying amount of land and land improvements 650      
Carrying amount of building and improvements 7,729      
Accumulated depreciation 2,924      
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 2,568      
Carrying amount of land and land improvements 1,383      
Carrying amount of building and improvements 13,006      
Accumulated depreciation 2,278      
Seniors Housing Operating | Union, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 34,604      
Carrying amount of land and land improvements 2,283      
Carrying amount of building and improvements 32,321      
Accumulated depreciation 4,459      
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 1,108      
Carrying amount of land and land improvements 3,160      
Carrying amount of building and improvements 43,704      
Accumulated depreciation 12,147      
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 1,298      
Carrying amount of land and land improvements 1,909      
Carrying amount of building and improvements 29,484      
Accumulated depreciation 7,522      
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 3,036      
Carrying amount of land and land improvements 1,256      
Carrying amount of building and improvements 16,337      
Accumulated depreciation 6,444      
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 1,732      
Carrying amount of land and land improvements 1,758      
Carrying amount of building and improvements 7,246      
Accumulated depreciation 1,907      
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 2,434      
Carrying amount of land and land improvements 2,596      
Carrying amount of building and improvements 38,501      
Accumulated depreciation 5,360      
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 8,480      
Carrying amount of land and land improvements 900      
Carrying amount of building and improvements 25,580      
Accumulated depreciation 12,181      
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 10,014      
Carrying amount of land and land improvements 4,030      
Carrying amount of building and improvements 27,984      
Accumulated depreciation 13,078      
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 2,742      
Carrying amount of land and land improvements 2,330      
Carrying amount of building and improvements 18,149      
Accumulated depreciation 7,726      
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 3,504      
Carrying amount of land and land improvements 1,821      
Carrying amount of building and improvements 22,545      
Accumulated depreciation 8,971      
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 2,946      
Carrying amount of land and land improvements 1,406      
Carrying amount of building and improvements 17,274      
Accumulated depreciation 3,332      
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 16,457      
Carrying amount of land and land improvements 4,783      
Carrying amount of building and improvements 114,315      
Accumulated depreciation 19,961      
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 14,964      
Carrying amount of land and land improvements 5,188      
Carrying amount of building and improvements 116,364      
Accumulated depreciation 19,659      
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 980      
Carrying amount of land and land improvements 1,477      
Carrying amount of building and improvements 23,753      
Accumulated depreciation 2,593      
Seniors Housing Operating | Vancouver, WA 6        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 31,283      
Initial cost of land and land improvements 3,512      
Initial cost of building and improvements 44,776      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,512      
Carrying amount of building and improvements 44,776      
Accumulated depreciation 387      
Seniors Housing Operating | Vancouver, BC 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 6,690      
Initial cost of building and improvements 6,038      
Cost Capitalized Subsequent to Acquisition 3,378      
Carrying amount of land and land improvements 6,960      
Carrying amount of building and improvements 9,146      
Accumulated depreciation 6,348      
Seniors Housing Operating | Vancouver, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 64,928      
Carrying amount of land and land improvements 10,184      
Carrying amount of building and improvements 54,744      
Accumulated depreciation 658      
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 524      
Carrying amount of land and land improvements 834      
Carrying amount of building and improvements 5,824      
Accumulated depreciation 1,334      
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 5,957      
Initial cost of land and land improvements 1,694      
Initial cost of building and improvements 12,998      
Cost Capitalized Subsequent to Acquisition 2,920      
Carrying amount of land and land improvements 1,776      
Carrying amount of building and improvements 15,836      
Accumulated depreciation 5,163      
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 505      
Carrying amount of land and land improvements 13,757      
Carrying amount of building and improvements 102,620      
Accumulated depreciation 16,666      
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 1,014      
Carrying amount of land and land improvements 1,150      
Carrying amount of building and improvements 11,688      
Accumulated depreciation 4,566      
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 29,092      
Initial cost of land and land improvements 3,593      
Initial cost of building and improvements 40,407      
Cost Capitalized Subsequent to Acquisition 4,154      
Carrying amount of land and land improvements 3,675      
Carrying amount of building and improvements 44,479      
Accumulated depreciation 6,328      
Seniors Housing Operating | Vero Beach, 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 2,930      
Initial cost of building and improvements 40,070      
Cost Capitalized Subsequent to Acquisition 28,999      
Carrying amount of land and land improvements 2,930      
Carrying amount of building and improvements 69,069      
Accumulated depreciation 34,962      
Seniors Housing Operating | Vero Beach, 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 1,256      
Initial cost of building and improvements 11,204      
Cost Capitalized Subsequent to Acquisition 377      
Carrying amount of land and land improvements 1,256      
Carrying amount of building and improvements 11,581      
Accumulated depreciation 1,914      
Seniors Housing Operating | Vero Beach, 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 3,580      
Initial cost of building and improvements 31,735      
Cost Capitalized Subsequent to Acquisition 6,496      
Carrying amount of land and land improvements 4,290      
Carrying amount of building and improvements 37,521      
Accumulated depreciation 4,802      
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 4,482      
Initial cost of land and land improvements 2,056      
Initial cost of building and improvements 12,988      
Cost Capitalized Subsequent to Acquisition 6,411      
Carrying amount of land and land improvements 2,773      
Carrying amount of building and improvements 18,682      
Accumulated depreciation 7,271      
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 2,651      
Initial cost of building and improvements 11,358      
Cost Capitalized Subsequent to Acquisition 5,949      
Carrying amount of land and land improvements 3,562      
Carrying amount of building and improvements 16,396      
Accumulated depreciation 6,586      
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 2,275      
Initial cost of building and improvements 14,129      
Cost Capitalized Subsequent to Acquisition 2,790      
Carrying amount of land and land improvements 2,405      
Carrying amount of building and improvements 16,789      
Accumulated depreciation 4,708      
Seniors Housing Operating | Ville de Sainte-Marie, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,090      
Initial cost of land and land improvements 3,777      
Initial cost of building and improvements 25,122      
Cost Capitalized Subsequent to Acquisition 6,292      
Carrying amount of land and land improvements 3,671      
Carrying amount of building and improvements 31,520      
Accumulated depreciation 3,209      
Seniors Housing Operating | Ville de Saint-Georges, 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 2,962      
Initial cost of building and improvements 19,572      
Cost Capitalized Subsequent to Acquisition 6,353      
Carrying amount of land and land improvements 2,763      
Carrying amount of building and improvements 26,124      
Accumulated depreciation 2,632      
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 5,286      
Initial cost of building and improvements 22,268      
Cost Capitalized Subsequent to Acquisition 15,962      
Carrying amount of land and land improvements 5,482      
Carrying amount of building and improvements 38,034      
Accumulated depreciation 18,328      
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 3,755      
Carrying amount of land and land improvements 913      
Carrying amount of building and improvements 20,565      
Accumulated depreciation 3,834      
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 3,736      
Carrying amount of land and land improvements 3,883      
Carrying amount of building and improvements 27,865      
Accumulated depreciation 9,500      
Seniors Housing Operating | Waco, 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 1,383      
Initial cost of building and improvements 11,020      
Cost Capitalized Subsequent to Acquisition 2,301      
Carrying amount of land and land improvements 1,418      
Carrying amount of building and improvements 13,286      
Accumulated depreciation 2,119      
Seniors Housing Operating | Waco, 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 1,755      
Initial cost of building and improvements 8,435      
Cost Capitalized Subsequent to Acquisition 289      
Carrying amount of land and land improvements 1,755      
Carrying amount of building and improvements 8,724      
Accumulated depreciation 1,362      
Seniors Housing Operating | Waconia, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 890      
Initial cost of building and improvements 14,726      
Cost Capitalized Subsequent to Acquisition 5,197      
Carrying amount of land and land improvements 988      
Carrying amount of building and improvements 19,825      
Accumulated depreciation 6,607      
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 5,422      
Carrying amount of land and land improvements 1,749      
Carrying amount of building and improvements 30,673      
Accumulated depreciation 10,665      
Seniors Housing Operating | Walla Walla, 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 1,414      
Initial cost of building and improvements 2,399      
Cost Capitalized Subsequent to Acquisition 838      
Carrying amount of land and land improvements 1,415      
Carrying amount of building and improvements 3,236      
Accumulated depreciation 731      
Seniors Housing Operating | Walla Walla, WA 2        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 9,435      
Initial cost of land and land improvements 1,207      
Initial cost of building and improvements 20,579      
Cost Capitalized Subsequent to Acquisition 9      
Carrying amount of land and land improvements 1,207      
Carrying amount of building and improvements 20,588      
Accumulated depreciation 517      
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 4,858      
Carrying amount of land and land improvements 3,826      
Carrying amount of building and improvements 17,199      
Accumulated depreciation 7,647      
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 25,481      
Carrying amount of land and land improvements 10,469      
Carrying amount of building and improvements 126,222      
Accumulated depreciation 38,400      
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 15,856      
Carrying amount of land and land improvements 7,224      
Carrying amount of building and improvements 123,531      
Accumulated depreciation 19,026      
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 71,267      
Carrying amount of land and land improvements 22,760      
Carrying amount of building and improvements 48,507      
Accumulated depreciation 6,753      
Seniors Housing Operating | Wantage, 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 3,890      
Initial cost of building and improvements 19,807      
Cost Capitalized Subsequent to Acquisition 15      
Carrying amount of land and land improvements 3,890      
Carrying amount of building and improvements 19,822      
Accumulated depreciation 160      
Seniors Housing Operating | Ware, 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 3,982      
Cost Capitalized Subsequent to Acquisition 11      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,993      
Accumulated depreciation 515      
Seniors Housing Operating | Warminster, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 3,599      
Initial cost of building and improvements 43,315      
Cost Capitalized Subsequent to Acquisition 96      
Carrying amount of land and land improvements 3,599      
Carrying amount of building and improvements 43,411      
Accumulated depreciation 757      
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 1,105      
Carrying amount of land and land improvements 4,289      
Carrying amount of building and improvements 58,423      
Accumulated depreciation 2,886      
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 1,018      
Carrying amount of land and land improvements 2,308      
Carrying amount of building and improvements 9,310      
Accumulated depreciation 1,750      
Seniors Housing Operating | Washington, DC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,000      
Initial cost of building and improvements 69,154      
Cost Capitalized Subsequent to Acquisition 302      
Carrying amount of land and land improvements 4,021      
Carrying amount of building and improvements 69,435      
Accumulated depreciation 21,719      
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 513      
Carrying amount of land and land improvements 230      
Carrying amount of building and improvements 2,919      
Accumulated depreciation 464      
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 7,228      
Carrying amount of land and land improvements 2,225      
Carrying amount of building and improvements 31,803      
Accumulated depreciation 10,296      
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 2,452      
Carrying amount of land and land improvements 1,022      
Carrying amount of building and improvements 15,624      
Accumulated depreciation 2,720      
Seniors Housing Operating | Waterlooville, 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 4,094      
Cost Capitalized Subsequent to Acquisition 8      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,102      
Accumulated depreciation 546      
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 1,644      
Carrying amount of land and land improvements 2,634      
Carrying amount of building and improvements 46,231      
Accumulated depreciation 7,138      
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 2,212      
Carrying amount of land and land improvements 1,903      
Carrying amount of building and improvements 34,057      
Accumulated depreciation 10,932      
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 2,434      
Carrying amount of land and land improvements 650      
Carrying amount of building and improvements 8,197      
Accumulated depreciation 2,961      
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 2,697      
Carrying amount of land and land improvements 1,467      
Carrying amount of building and improvements 29,899      
Accumulated depreciation 11,736      
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 2,400      
Carrying amount of land and land improvements 660      
Carrying amount of building and improvements 7,661      
Accumulated depreciation 2,777      
Seniors Housing Operating | Webster, 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 3,359      
Initial cost of building and improvements 25,411      
Cost Capitalized Subsequent to Acquisition 291      
Carrying amount of land and land improvements 3,359      
Carrying amount of building and improvements 25,702      
Accumulated depreciation 2,458      
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 3,271      
Carrying amount of land and land improvements 1,846      
Carrying amount of building and improvements 18,640      
Accumulated depreciation 7,558      
Seniors Housing Operating | Wellesley, 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 4,690      
Initial cost of building and improvements 77,462      
Cost Capitalized Subsequent to Acquisition 6,650      
Carrying amount of land and land improvements 4,690      
Carrying amount of building and improvements 84,112      
Accumulated depreciation 23,846      
Seniors Housing Operating | Wellesley, 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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 13,200      
Carrying amount of land and land improvements 13,200      
Carrying amount of building and improvements 0      
Accumulated depreciation 0      
Seniors Housing Operating | Wells Branch, TX        
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 5,477      
Initial cost of building and improvements 17,668      
Cost Capitalized Subsequent to Acquisition 5      
Carrying amount of land and land improvements 5,477      
Carrying amount of building and improvements 17,673      
Accumulated depreciation 478      
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 7,585      
Carrying amount of land and land improvements 2,675      
Carrying amount of building and improvements 41,757      
Accumulated depreciation 3,498      
Seniors Housing Operating | Wesley Chapel, 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 14,240      
Carrying amount of land and land improvements 2,424      
Carrying amount of building and improvements 11,816      
Accumulated depreciation 31      
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 3,571      
Carrying amount of land and land improvements 4,062      
Carrying amount of building and improvements 50,554      
Accumulated depreciation 17,746      
Seniors Housing Operating | West Bend, WI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 620      
Initial cost of building and improvements 17,790      
Cost Capitalized Subsequent to Acquisition 556      
Carrying amount of land and land improvements 641      
Carrying amount of building and improvements 18,325      
Accumulated depreciation 6,145      
Seniors Housing Operating | West Bloomfield, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,040      
Initial cost of building and improvements 12,300      
Cost Capitalized Subsequent to Acquisition 1,490      
Carrying amount of land and land improvements 1,251      
Carrying amount of building and improvements 13,579      
Accumulated depreciation 5,086      
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 1,741      
Carrying amount of land and land improvements 2,319      
Carrying amount of building and improvements 49,598      
Accumulated depreciation 7,730      
Seniors Housing Operating | West Drayton, 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 35      
Initial cost of building and improvements 5,018      
Cost Capitalized Subsequent to Acquisition 46      
Carrying amount of land and land improvements 35      
Carrying amount of building and improvements 5,064      
Accumulated depreciation 358      
Seniors Housing Operating | West Drayton, 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 14      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 14      
Accumulated depreciation 0      
Seniors Housing Operating | West End, 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 2,887      
Initial cost of building and improvements 12,090      
Cost Capitalized Subsequent to Acquisition 1,017      
Carrying amount of land and land improvements 2,936      
Carrying amount of building and improvements 13,058      
Accumulated depreciation 2,720      
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 3,538      
Carrying amount of land and land improvements 2,658      
Carrying amount of building and improvements 11,001      
Accumulated depreciation 4,765      
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 22,294      
Initial cost of land and land improvements 3,435      
Initial cost of building and improvements 29,805      
Cost Capitalized Subsequent to Acquisition 3,430      
Carrying amount of land and land improvements 3,513      
Carrying amount of building and improvements 33,157      
Accumulated depreciation 4,492      
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 1,511      
Carrying amount of land and land improvements 1,313      
Carrying amount of building and improvements 8,314      
Accumulated depreciation 2,240      
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 886      
Carrying amount of land and land improvements 1,060      
Carrying amount of building and improvements 8,696      
Accumulated depreciation 2,135      
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 12,949      
Initial cost of land and land improvements 5,083      
Initial cost of building and improvements 20,273      
Cost Capitalized Subsequent to Acquisition 14,885      
Carrying amount of land and land improvements 6,822      
Carrying amount of building and improvements 33,419      
Accumulated depreciation 11,706      
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 4,047      
Initial cost of building and improvements 30,809      
Cost Capitalized Subsequent to Acquisition 20,057      
Carrying amount of land and land improvements 5,512      
Carrying amount of building and improvements 49,401      
Accumulated depreciation 20,020      
Seniors Housing Operating | Westbury-on-Trym, 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 2,262      
Initial cost of building and improvements 24,348      
Cost Capitalized Subsequent to Acquisition 19      
Carrying amount of land and land improvements 2,262      
Carrying amount of building and improvements 24,367      
Accumulated depreciation 616      
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 455      
Carrying amount of land and land improvements 1,267      
Carrying amount of building and improvements 9,995      
Accumulated depreciation 1,386      
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 19,875      
Initial cost of land and land improvements 1,908      
Initial cost of building and improvements 29,363      
Cost Capitalized Subsequent to Acquisition 478      
Carrying amount of land and land improvements 1,922      
Carrying amount of building and improvements 29,827      
Accumulated depreciation 2,315      
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 15,163      
Carrying amount of land and land improvements 4,316      
Carrying amount of building and improvements 43,367      
Accumulated depreciation 3,234      
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 1,195      
Carrying amount of land and land improvements 1,468      
Carrying amount of building and improvements 33,774      
Accumulated depreciation 9,582      
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 229      
Carrying amount of land and land improvements 2,060      
Carrying amount of building and improvements 31,525      
Accumulated depreciation 8,335      
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 12      
Carrying amount of land and land improvements 7,688      
Carrying amount of building and improvements 71,035      
Accumulated depreciation 2,395      
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 1,943      
Initial cost of building and improvements 12,413      
Cost Capitalized Subsequent to Acquisition 5,996      
Carrying amount of land and land improvements 2,629      
Carrying amount of building and improvements 17,723      
Accumulated depreciation 5,053      
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 1,645      
Carrying amount of land and land improvements 1,480      
Carrying amount of building and improvements 11,123      
Accumulated depreciation 1,790      
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 10,187      
Carrying amount of land and land improvements 10,187      
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 3,479      
Carrying amount of land and land improvements 2,463      
Carrying amount of building and improvements 28,088      
Accumulated depreciation 10,581      
Seniors Housing Operating | Whitehall, 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 1,645      
Initial cost of building and improvements 6,789      
Cost Capitalized Subsequent to Acquisition 54      
Carrying amount of land and land improvements 1,645      
Carrying amount of building and improvements 6,843      
Accumulated depreciation 1,348      
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 1,567      
Carrying amount of land and land improvements 1,711      
Carrying amount of building and improvements 13,487      
Accumulated depreciation 3,245      
Seniors Housing Operating | Whitstable, 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 3,600      
Cost Capitalized Subsequent to Acquisition 2      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,602      
Accumulated depreciation 477      
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 900      
Carrying amount of land and land improvements 1,400      
Carrying amount of building and improvements 11,900      
Accumulated depreciation 7,916      
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 1,560      
Carrying amount of land and land improvements 630      
Carrying amount of building and improvements 21,307      
Accumulated depreciation 6,944      
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 721      
Carrying amount of land and land improvements 900      
Carrying amount of building and improvements 10,855      
Accumulated depreciation 3,872      
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 897      
Carrying amount of land and land improvements 1,315      
Carrying amount of building and improvements 11,431      
Accumulated depreciation 2,707      
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 2,943      
Carrying amount of land and land improvements 1,326      
Carrying amount of building and improvements 25,995      
Accumulated depreciation 9,982      
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 746      
Carrying amount of land and land improvements 1,608      
Carrying amount of building and improvements 28,878      
Accumulated depreciation 3,067      
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 25,583      
Initial cost of land and land improvements 6,427      
Initial cost of building and improvements 35,832      
Cost Capitalized Subsequent to Acquisition 1,654      
Carrying amount of land and land improvements 6,656      
Carrying amount of building and improvements 37,257      
Accumulated depreciation 2,331      
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 53,803      
Carrying amount of land and land improvements 10,556      
Carrying amount of building and improvements 144,233      
Accumulated depreciation 9,562      
Seniors Housing Operating | Wilmslow, 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 7      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 7      
Accumulated depreciation 0      
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 25,198      
Carrying amount of land and land improvements 7,550      
Carrying amount of building and improvements 17,648      
Accumulated depreciation 4,707      
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 4,470      
Initial cost of building and improvements 21,872      
Cost Capitalized Subsequent to Acquisition 12,920      
Carrying amount of land and land improvements 6,098      
Carrying amount of building and improvements 33,164      
Accumulated depreciation 12,630      
Seniors Housing Operating | Windsor, 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 3,869      
Cost Capitalized Subsequent to Acquisition 19      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 3,888      
Accumulated depreciation 514      
Seniors Housing Operating | Windsor, 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 623      
Cost Capitalized Subsequent to Acquisition 120      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 743      
Accumulated depreciation 78      
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 0      
Initial cost of land and land improvements 1,172      
Initial cost of building and improvements 19,965      
Cost Capitalized Subsequent to Acquisition 4,160      
Carrying amount of land and land improvements 1,473      
Carrying amount of building and improvements 23,824      
Accumulated depreciation 7,952      
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 9,018      
Initial cost of land and land improvements 1,210      
Initial cost of building and improvements 14,340      
Cost Capitalized Subsequent to Acquisition 4,444      
Carrying amount of land and land improvements 1,284      
Carrying amount of building and improvements 18,710      
Accumulated depreciation 5,647      
Seniors Housing Operating | Witney, 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 2,341      
Cost Capitalized Subsequent to Acquisition 10      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 2,351      
Accumulated depreciation 356      
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 888      
Cost Capitalized Subsequent to Acquisition 14      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 902      
Accumulated depreciation 100      
Seniors Housing Operating | Woodbury, 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 2,210      
Initial cost of building and improvements 22,633      
Cost Capitalized Subsequent to Acquisition 403      
Carrying amount of land and land improvements 2,210      
Carrying amount of building and improvements 23,036      
Accumulated depreciation 2,008      
Seniors Housing Operating | Woodbury, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 1,317      
Initial cost of building and improvements 20,935      
Cost Capitalized Subsequent to Acquisition 660      
Carrying amount of land and land improvements 1,381      
Carrying amount of building and improvements 21,531      
Accumulated depreciation 4,674      
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 4,044      
Carrying amount of land and land improvements 3,456      
Carrying amount of building and improvements 24,466      
Accumulated depreciation 8,886      
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 13,374      
Initial cost of land and land improvements 1,560      
Initial cost of building and improvements 22,555      
Cost Capitalized Subsequent to Acquisition 2,213      
Carrying amount of land and land improvements 1,616      
Carrying amount of building and improvements 24,712      
Accumulated depreciation 3,748      
Seniors Housing Operating | Worcester, 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 4,382      
Cost Capitalized Subsequent to Acquisition 26      
Carrying amount of land and land improvements 0      
Carrying amount of building and improvements 4,408      
Accumulated depreciation 582      
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 3,174      
Carrying amount of land and land improvements 3,611      
Carrying amount of building and improvements 28,255      
Accumulated depreciation 5,485      
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 2,529      
Carrying amount of land and land improvements 1,210      
Carrying amount of building and improvements 13,130      
Accumulated depreciation 1,396      
Seniors Housing Operating | Yardley, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 2,832      
Initial cost of building and improvements 34,900      
Cost Capitalized Subsequent to Acquisition 96      
Carrying amount of land and land improvements 2,832      
Carrying amount of building and improvements 34,996      
Accumulated depreciation 830      
Seniors Housing Operating | Yate, 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 3,404      
Initial cost of building and improvements 21,276      
Cost Capitalized Subsequent to Acquisition 0      
Carrying amount of land and land improvements 3,404      
Carrying amount of building and improvements 21,276      
Accumulated depreciation 173      
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 3,631      
Carrying amount of land and land improvements 4,074      
Carrying amount of building and improvements 53,626      
Accumulated depreciation 19,297      
Seniors Housing Operating | York, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial cost of encumbrances 0      
Initial cost of land and land improvements 4,564      
Initial cost of building and improvements 32,847      
Cost Capitalized Subsequent to Acquisition 118      
Carrying amount of land and land improvements 4,564      
Carrying amount of building and improvements 32,965      
Accumulated depreciation 423      
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 2,031      
Initial cost of land and land improvements 438      
Initial cost of building and improvements 8,294      
Cost Capitalized Subsequent to Acquisition 1,714      
Carrying amount of land and land improvements 436      
Carrying amount of building and improvements 10,010      
Accumulated depreciation 3,219      
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 0      
Initial cost of building and improvements 0      
Cost Capitalized Subsequent to Acquisition 26,480      
Carrying amount of land and land improvements 1,625      
Carrying amount of building and improvements 24,855      
Accumulated depreciation 8,936      
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 548      
Carrying amount of land and land improvements 2,164      
Carrying amount of building and improvements 33,784      
Accumulated depreciation $ 4,010