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Schedule III - Real Estate and Accumulated Depreciation (Seniors Housing) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 2,993,341      
Initial Cost of Land 3,428,034      
Initial Cost of Building & Improvements 30,427,473      
Cost Capitalized Subsequent to Acquisition 2,583,182      
Carrying Amount of Land 3,486,620      
Carrying Amount of Building and Improvements 32,541,295      
Accumulated Depreciation 5,715,459 $ 5,499,958 $ 4,838,370 $ 4,093,494
Seniors Housing Operating        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 1,990,607      
Initial Cost of Land 1,383,927      
Initial Cost of Building & Improvements 13,886,675      
Cost Capitalized Subsequent to Acquisition 1,879,176      
Carrying Amount of Land 1,469,078      
Carrying Amount of Building and Improvements 15,680,700      
Accumulated Depreciation 3,194,057      
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 2,144      
Initial Cost of Building & Improvements 12,549      
Cost Capitalized Subsequent to Acquisition 657      
Carrying Amount of Land 2,230      
Carrying Amount of Building and Improvements 13,120      
Accumulated Depreciation 1,032      
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 170      
Initial Cost of Building & Improvements 6,203      
Cost Capitalized Subsequent to Acquisition 489      
Carrying Amount of Land 176      
Carrying Amount of Building and Improvements 6,686      
Accumulated Depreciation 1,998      
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 0      
Initial Cost of Land 1,270      
Initial Cost of Building & Improvements 20,837      
Cost Capitalized Subsequent to Acquisition 2,653      
Carrying Amount of Land 1,354      
Carrying Amount of Building and Improvements 23,406      
Accumulated Depreciation 7,255      
Seniors Housing Operating | Alexandria, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 8,280      
Initial Cost of Building & Improvements 50,914      
Cost Capitalized Subsequent to Acquisition 296      
Carrying Amount of Land 8,280      
Carrying Amount of Building and Improvements 51,210      
Accumulated Depreciation 2,459      
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 4,244      
Initial Cost of Building & Improvements 25,187      
Cost Capitalized Subsequent to Acquisition 3,274      
Carrying Amount of Land 4,565      
Carrying Amount of Building and Improvements 28,140      
Accumulated Depreciation 6,892      
Seniors Housing Operating | Amherst, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,131      
Initial Cost of Building & Improvements 10,520      
Cost Capitalized Subsequent to Acquisition 806      
Carrying Amount of Land 1,131      
Carrying Amount of Building and Improvements 11,326      
Accumulated Depreciation 623      
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 473      
Initial Cost of Building & Improvements 4,446      
Cost Capitalized Subsequent to Acquisition 691      
Carrying Amount of Land 519      
Carrying Amount of Building and Improvements 5,091      
Accumulated Depreciation 1,019      
Seniors Housing Operating | Anderson, SC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 710      
Initial Cost of Building & Improvements 6,290      
Cost Capitalized Subsequent to Acquisition 878      
Carrying Amount of Land 710      
Carrying Amount of Building and Improvements 7,168      
Accumulated Depreciation 3,811      
Seniors Housing Operating | Ankeny, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,129      
Initial Cost of Building & Improvements 10,239      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,129      
Carrying Amount of Building and Improvements 10,239      
Accumulated Depreciation 970      
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 480      
Initial Cost of Building & Improvements 16,639      
Cost Capitalized Subsequent to Acquisition 856      
Carrying Amount of Land 486      
Carrying Amount of Building and Improvements 17,489      
Accumulated Depreciation 5,084      
Seniors Housing Operating | Arlington, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,660      
Initial Cost of Building & Improvements 37,395      
Cost Capitalized Subsequent to Acquisition 3,019      
Carrying Amount of Land 1,660      
Carrying Amount of Building and Improvements 40,414      
Accumulated Depreciation 10,850      
Seniors Housing Operating | Arlington, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 8,385      
Initial Cost of Building & Improvements 31,198      
Cost Capitalized Subsequent to Acquisition 15,162      
Carrying Amount of Land 8,386      
Carrying Amount of Building and Improvements 46,359      
Accumulated Depreciation 13,165      
Seniors Housing Operating | Arlington, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 2,338      
Cost Capitalized Subsequent to Acquisition 1,657      
Carrying Amount of Land 5      
Carrying Amount of Building and Improvements 3,990      
Accumulated Depreciation 259      
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 788      
Initial Cost of Building & Improvements 6,283      
Cost Capitalized Subsequent to Acquisition 880      
Carrying Amount of Land 851      
Carrying Amount of Building and Improvements 7,100      
Accumulated Depreciation 1,783      
Seniors Housing Operating | Atlanta, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,058      
Initial Cost of Building & Improvements 14,914      
Cost Capitalized Subsequent to Acquisition 2,148      
Carrying Amount of Land 2,080      
Carrying Amount of Building and Improvements 17,040      
Accumulated Depreciation 12,165      
Seniors Housing Operating | Atlanta, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,100      
Initial Cost of Building & Improvements 20,603      
Cost Capitalized Subsequent to Acquisition 1,824      
Carrying Amount of Land 2,197      
Carrying Amount of Building and Improvements 22,330      
Accumulated Depreciation 4,829      
Seniors Housing Operating | Austin, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 880      
Initial Cost of Building & Improvements 9,520      
Cost Capitalized Subsequent to Acquisition 1,902      
Carrying Amount of Land 885      
Carrying Amount of Building and Improvements 11,417      
Accumulated Depreciation 6,144      
Seniors Housing Operating | Austin, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,560      
Initial Cost of Building & Improvements 21,413      
Cost Capitalized Subsequent to Acquisition 750      
Carrying Amount of Land 1,560      
Carrying Amount of Building and Improvements 22,163      
Accumulated Depreciation 3,533      
Seniors Housing Operating | Austin, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,200      
Initial Cost of Building & Improvements 74,850      
Cost Capitalized Subsequent to Acquisition 1,287      
Carrying Amount of Land 4,200      
Carrying Amount of Building and Improvements 76,137      
Accumulated Depreciation 10,166      
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 4,960      
Initial Cost of Building & Improvements 29,881      
Cost Capitalized Subsequent to Acquisition 6,822      
Carrying Amount of Land 5,340      
Carrying Amount of Building and Improvements 36,323      
Accumulated Depreciation 8,360      
Seniors Housing Operating | Banstead, 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 6,695      
Initial Cost of Building & Improvements 55,113      
Cost Capitalized Subsequent to Acquisition 9,912      
Carrying Amount of Land 7,246      
Carrying Amount of Building and Improvements 64,474      
Accumulated Depreciation 14,801      
Seniors Housing Operating | Basingstoke, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,420      
Initial Cost of Building & Improvements 18,853      
Cost Capitalized Subsequent to Acquisition 1,958      
Carrying Amount of Land 3,678      
Carrying Amount of Building and Improvements 20,553      
Accumulated Depreciation 3,155      
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 2,356      
Initial Cost of Building & Improvements 37,710      
Cost Capitalized Subsequent to Acquisition 1,738      
Carrying Amount of Land 2,395      
Carrying Amount of Building and Improvements 39,409      
Accumulated Depreciation 9,083      
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 4,874      
Initial Cost of Building & Improvements 32,304      
Cost Capitalized Subsequent to Acquisition 8,919      
Carrying Amount of Land 5,255      
Carrying Amount of Building and Improvements 40,842      
Accumulated Depreciation 10,030      
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 2,696      
Initial Cost of Building & Improvements 11,876      
Cost Capitalized Subsequent to Acquisition 783      
Carrying Amount of Land 2,805      
Carrying Amount of Building and Improvements 12,550      
Accumulated Depreciation 979      
Seniors Housing Operating | Baton Rouge, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 12,930      
Initial Cost of Land 790      
Initial Cost of Building & Improvements 29,436      
Cost Capitalized Subsequent to Acquisition 1,242      
Carrying Amount of Land 886      
Carrying Amount of Building and Improvements 30,582      
Accumulated Depreciation 6,912      
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 5,566      
Initial Cost of Building & Improvements 50,952      
Cost Capitalized Subsequent to Acquisition 4,746      
Carrying Amount of Land 5,998      
Carrying Amount of Building and Improvements 55,266      
Accumulated Depreciation 12,416      
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 1,149      
Initial Cost of Building & Improvements 17,484      
Cost Capitalized Subsequent to Acquisition 1,808      
Carrying Amount of Land 1,289      
Carrying Amount of Building and Improvements 19,152      
Accumulated Depreciation 5,644      
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 1,820      
Initial Cost of Building & Improvements 21,084      
Cost Capitalized Subsequent to Acquisition 632      
Carrying Amount of Land 1,820      
Carrying Amount of Building and Improvements 21,716      
Accumulated Depreciation 2,694      
Seniors Housing Operating | Bellevue, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,800      
Initial Cost of Building & Improvements 19,004      
Cost Capitalized Subsequent to Acquisition 2,392      
Carrying Amount of Land 2,816      
Carrying Amount of Building and Improvements 21,380      
Accumulated Depreciation 6,062      
Seniors Housing Operating | Bellingham, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,500      
Initial Cost of Building & Improvements 19,861      
Cost Capitalized Subsequent to Acquisition 822      
Carrying Amount of Land 1,507      
Carrying Amount of Building and Improvements 20,676      
Accumulated Depreciation 5,982      
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 0      
Initial Cost of Building & Improvements 35,300      
Cost Capitalized Subsequent to Acquisition 2,426      
Carrying Amount of Land 178      
Carrying Amount of Building and Improvements 37,548      
Accumulated Depreciation 9,080      
Seniors Housing Operating | Bethel Park, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,609      
Initial Cost of Building & Improvements 12,989      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,609      
Carrying Amount of Building and Improvements 12,989      
Accumulated Depreciation 259      
Seniors Housing Operating | Bethesda, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 45,309      
Cost Capitalized Subsequent to Acquisition 1,263      
Carrying Amount of Land 3      
Carrying Amount of Building and Improvements 46,569      
Accumulated Depreciation 10,744      
Seniors Housing Operating | Bethesda, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 45      
Cost Capitalized Subsequent to Acquisition 886      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 931      
Accumulated Depreciation 229      
Seniors Housing Operating | Bethesda, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 212      
Cost Capitalized Subsequent to Acquisition 926      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 1,138      
Accumulated Depreciation 480      
Seniors Housing Operating | Bethesda, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 0      
Cost Capitalized Subsequent to Acquisition 69,690      
Carrying Amount of Land 3,513      
Carrying Amount of Building and Improvements 66,252      
Accumulated Depreciation 1,421      
Seniors Housing Operating | Birmingham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 148      
Initial Cost of Building & Improvements 18,956      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 148      
Carrying Amount of Building and Improvements 18,956      
Accumulated Depreciation 4,844      
Seniors Housing Operating | Birmingham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,480      
Initial Cost of Building & Improvements 13,014      
Cost Capitalized Subsequent to Acquisition 1,302      
Carrying Amount of Land 1,592      
Carrying Amount of Building and Improvements 14,204      
Accumulated Depreciation 1,211      
Seniors Housing Operating | Birmingham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,807      
Initial Cost of Building & Improvements 11,313      
Cost Capitalized Subsequent to Acquisition 1,598      
Carrying Amount of Land 3,019      
Carrying Amount of Building and Improvements 12,699      
Accumulated Depreciation 1,038      
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 2,077      
Initial Cost of Building & Improvements 8,902      
Cost Capitalized Subsequent to Acquisition 1,388      
Carrying Amount of Land 2,301      
Carrying Amount of Building and Improvements 10,066      
Accumulated Depreciation 3,242      
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 2,000      
Initial Cost of Building & Improvements 35,662      
Cost Capitalized Subsequent to Acquisition 1,413      
Carrying Amount of Land 2,133      
Carrying Amount of Building and Improvements 36,942      
Accumulated Depreciation 8,446      
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 6,565      
Initial Cost of Building & Improvements 111,247      
Cost Capitalized Subsequent to Acquisition 23,813      
Carrying Amount of Land 6,565      
Carrying Amount of Building and Improvements 135,060      
Accumulated Depreciation 17,762      
Seniors Housing Operating | Boise, ID        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,220      
Initial Cost of Building & Improvements 18,703      
Cost Capitalized Subsequent to Acquisition 1,830      
Carrying Amount of Land 2,220      
Carrying Amount of Building and Improvements 20,533      
Accumulated Depreciation 349      
Seniors Housing Operating | Borehamwood, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,367      
Initial Cost of Building & Improvements 41,937      
Cost Capitalized Subsequent to Acquisition 4,370      
Carrying Amount of Land 5,810      
Carrying Amount of Building and Improvements 45,864      
Accumulated Depreciation 10,954      
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 1,350      
Initial Cost of Building & Improvements 13,439      
Cost Capitalized Subsequent to Acquisition 6,927      
Carrying Amount of Land 1,798      
Carrying Amount of Building and Improvements 19,918      
Accumulated Depreciation 3,354      
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 2,994      
Initial Cost of Building & Improvements 27,458      
Cost Capitalized Subsequent to Acquisition 2,434      
Carrying Amount of Land 3,064      
Carrying Amount of Building and Improvements 29,822      
Accumulated Depreciation 8,429      
Seniors Housing Operating | Bournemouth, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,527      
Initial Cost of Building & Improvements 42,547      
Cost Capitalized Subsequent to Acquisition 4,509      
Carrying Amount of Land 5,966      
Carrying Amount of Building and Improvements 46,617      
Accumulated Depreciation 10,820      
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 0      
Initial Cost of Building & Improvements 41,290      
Cost Capitalized Subsequent to Acquisition 1,251      
Carrying Amount of Land 100      
Carrying Amount of Building and Improvements 42,441      
Accumulated Depreciation 10,092      
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 41,370      
Initial Cost of Land 10,196      
Initial Cost of Building & Improvements 59,989      
Cost Capitalized Subsequent to Acquisition 3,806      
Carrying Amount of Land 10,736      
Carrying Amount of Building and Improvements 63,255      
Accumulated Depreciation 12,158      
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 1,220      
Initial Cost of Building & Improvements 10,241      
Cost Capitalized Subsequent to Acquisition 277      
Carrying Amount of Land 1,220      
Carrying Amount of Building and Improvements 10,518      
Accumulated Depreciation 2,594      
Seniors Housing Operating | Brick, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,170      
Initial Cost of Building & Improvements 17,372      
Cost Capitalized Subsequent to Acquisition 1,752      
Carrying Amount of Land 1,213      
Carrying Amount of Building and Improvements 19,081      
Accumulated Depreciation 4,778      
Seniors Housing Operating | Brick, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 690      
Initial Cost of Building & Improvements 17,125      
Cost Capitalized Subsequent to Acquisition 5,803      
Carrying Amount of Land 695      
Carrying Amount of Building and Improvements 22,923      
Accumulated Depreciation 4,778      
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 1,730      
Initial Cost of Building & Improvements 48,201      
Cost Capitalized Subsequent to Acquisition 2,785      
Carrying Amount of Land 1,774      
Carrying Amount of Building and Improvements 50,942      
Accumulated Depreciation 11,700      
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 1,500      
Initial Cost of Building & Improvements 23,496      
Cost Capitalized Subsequent to Acquisition 639      
Carrying Amount of Land 1,705      
Carrying Amount of Building and Improvements 23,930      
Accumulated Depreciation 4,631      
Seniors Housing Operating | Brockville, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 4,375      
Initial Cost of Land 484      
Initial Cost of Building & Improvements 7,445      
Cost Capitalized Subsequent to Acquisition 916      
Carrying Amount of Land 524      
Carrying Amount of Building and Improvements 8,321      
Accumulated Depreciation 1,480      
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 1,300      
Initial Cost of Building & Improvements 12,830      
Cost Capitalized Subsequent to Acquisition 147      
Carrying Amount of Land 1,300      
Carrying Amount of Building and Improvements 12,977      
Accumulated Depreciation 2,137      
Seniors Housing Operating | Broomfield, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,140      
Initial Cost of Building & Improvements 44,547      
Cost Capitalized Subsequent to Acquisition 12,797      
Carrying Amount of Land 10,140      
Carrying Amount of Building and Improvements 51,344      
Accumulated Depreciation 18,769      
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 10,516      
Initial Cost of Land 5,499      
Initial Cost of Building & Improvements 31,854      
Cost Capitalized Subsequent to Acquisition 2,991      
Carrying Amount of Land 5,720      
Carrying Amount of Building and Improvements 34,624      
Accumulated Depreciation 7,003      
Seniors Housing Operating | Buckingham, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,979      
Initial Cost of Building & Improvements 13,880      
Cost Capitalized Subsequent to Acquisition 1,801      
Carrying Amount of Land 3,231      
Carrying Amount of Building and Improvements 15,429      
Accumulated Depreciation 2,436      
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 2,850      
Initial Cost of Building & Improvements 49,129      
Cost Capitalized Subsequent to Acquisition 3,932      
Carrying Amount of Land 2,850      
Carrying Amount of Building and Improvements 53,061      
Accumulated Depreciation 12,104      
Seniors Housing Operating | Burbank, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,940      
Initial Cost of Building & Improvements 43,466      
Cost Capitalized Subsequent to Acquisition 4,101      
Carrying Amount of Land 4,940      
Carrying Amount of Building and Improvements 47,567      
Accumulated Depreciation 12,013      
Seniors Housing Operating | Burbank, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 18,865      
Initial Cost of Land 3,610      
Initial Cost of Building & Improvements 50,817      
Cost Capitalized Subsequent to Acquisition 4,219      
Carrying Amount of Land 3,610      
Carrying Amount of Building and Improvements 55,036      
Accumulated Depreciation 7,089      
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 0      
Initial Cost of Building & Improvements 0      
Cost Capitalized Subsequent to Acquisition 52,827      
Carrying Amount of Land 2,575      
Carrying Amount of Building and Improvements 50,252      
Accumulated Depreciation 1,194      
Seniors Housing Operating | Burleson, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,150      
Initial Cost of Building & Improvements 10,437      
Cost Capitalized Subsequent to Acquisition 681      
Carrying Amount of Land 3,150      
Carrying Amount of Building and Improvements 11,118      
Accumulated Depreciation 1,669      
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 0      
Initial Cost of Building & Improvements 62,786      
Cost Capitalized Subsequent to Acquisition 93      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 62,879      
Accumulated Depreciation 7,356      
Seniors Housing Operating | Burlington, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 11,513      
Initial Cost of Land 1,309      
Initial Cost of Building & Improvements 19,311      
Cost Capitalized Subsequent to Acquisition 1,829      
Carrying Amount of Land 1,413      
Carrying Amount of Building and Improvements 21,036      
Accumulated Depreciation 5,071      
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 2,443      
Initial Cost of Building & Improvements 34,354      
Cost Capitalized Subsequent to Acquisition 1,645      
Carrying Amount of Land 2,578      
Carrying Amount of Building and Improvements 35,864      
Accumulated Depreciation 8,967      
Seniors Housing Operating | Burlington, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 877      
Initial Cost of Building & Improvements 14,938      
Cost Capitalized Subsequent to Acquisition 915      
Carrying Amount of Land 877      
Carrying Amount of Building and Improvements 15,853      
Accumulated Depreciation 1,085      
Seniors Housing Operating | Burlington, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 768      
Initial Cost of Building & Improvements 7,619      
Cost Capitalized Subsequent to Acquisition 568      
Carrying Amount of Land 768      
Carrying Amount of Building and Improvements 8,187      
Accumulated Depreciation 695      
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 12,690      
Initial Cost of Building & Improvements 36,482      
Cost Capitalized Subsequent to Acquisition 2,005      
Carrying Amount of Land 13,203      
Carrying Amount of Building and Improvements 37,974      
Accumulated Depreciation 1,554      
Seniors Housing Operating | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 11,355      
Initial Cost of Land 2,252      
Initial Cost of Building & Improvements 37,415      
Cost Capitalized Subsequent to Acquisition 3,512      
Carrying Amount of Land 2,424      
Carrying Amount of Building and Improvements 40,755      
Accumulated Depreciation 10,035      
Seniors Housing Operating | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 12,899      
Initial Cost of Land 2,793      
Initial Cost of Building & Improvements 41,179      
Cost Capitalized Subsequent to Acquisition 3,625      
Carrying Amount of Land 2,991      
Carrying Amount of Building and Improvements 44,606      
Accumulated Depreciation 10,754      
Seniors Housing Operating | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 10,250      
Initial Cost of Land 3,122      
Initial Cost of Building & Improvements 38,971      
Cost Capitalized Subsequent to Acquisition 3,592      
Carrying Amount of Land 3,358      
Carrying Amount of Building and Improvements 42,327      
Accumulated Depreciation 10,117      
Seniors Housing Operating | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 21,583      
Initial Cost of Land 3,431      
Initial Cost of Building & Improvements 28,983      
Cost Capitalized Subsequent to Acquisition 3,573      
Carrying Amount of Land 3,680      
Carrying Amount of Building and Improvements 32,307      
Accumulated Depreciation 6,936      
Seniors Housing Operating | Calgary, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 25,255      
Initial Cost of Land 2,385      
Initial Cost of Building & Improvements 36,776      
Cost Capitalized Subsequent to Acquisition 3,595      
Carrying Amount of Land 2,553      
Carrying Amount of Building and Improvements 40,203      
Accumulated Depreciation 7,071      
Seniors Housing Operating | Camberley, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,654      
Initial Cost of Building & Improvements 5,736      
Cost Capitalized Subsequent to Acquisition 20,735      
Carrying Amount of Land 6,091      
Carrying Amount of Building and Improvements 23,034      
Accumulated Depreciation 1,967      
Seniors Housing Operating | Camillus, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,064      
Initial Cost of Building & Improvements 11,132      
Cost Capitalized Subsequent to Acquisition 766      
Carrying Amount of Land 2,064      
Carrying Amount of Building and Improvements 11,898      
Accumulated Depreciation 748      
Seniors Housing Operating | Cardiff, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,191      
Initial Cost of Building & Improvements 12,566      
Cost Capitalized Subsequent to Acquisition 2,206      
Carrying Amount of Land 3,457      
Carrying Amount of Building and Improvements 14,506      
Accumulated Depreciation 4,212      
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 36,097      
Initial Cost of Land 5,880      
Initial Cost of Building & Improvements 64,711      
Cost Capitalized Subsequent to Acquisition 4,838      
Carrying Amount of Land 5,880      
Carrying Amount of Building and Improvements 69,549      
Accumulated Depreciation 18,178      
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 24,548      
Initial Cost of Land 2,440      
Initial Cost of Building & Improvements 41,988      
Cost Capitalized Subsequent to Acquisition 1,935      
Carrying Amount of Land 2,440      
Carrying Amount of Building and Improvements 43,923      
Accumulated Depreciation 0      
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 1,730      
Initial Cost of Building & Improvements 55,048      
Cost Capitalized Subsequent to Acquisition 3,139      
Carrying Amount of Land 1,730      
Carrying Amount of Building and Improvements 58,187      
Accumulated Depreciation 14,359      
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 4,280      
Initial Cost of Building & Improvements 31,444      
Cost Capitalized Subsequent to Acquisition 1,477      
Carrying Amount of Land 4,280      
Carrying Amount of Building and Improvements 32,921      
Accumulated Depreciation 5,127      
Seniors Housing Operating | Cary, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 740      
Initial Cost of Building & Improvements 45,240      
Cost Capitalized Subsequent to Acquisition 918      
Carrying Amount of Land 740      
Carrying Amount of Building and Improvements 46,158      
Accumulated Depreciation 9,522      
Seniors Housing Operating | Cary, NC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 6,112      
Initial Cost of Building & Improvements 70,008      
Cost Capitalized Subsequent to Acquisition 9,070      
Carrying Amount of Land 6,155      
Carrying Amount of Building and Improvements 79,035      
Accumulated Depreciation 9,215      
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 1,750      
Initial Cost of Building & Improvements 15,664      
Cost Capitalized Subsequent to Acquisition 742      
Carrying Amount of Land 1,750      
Carrying Amount of Building and Improvements 16,406      
Accumulated Depreciation 1,351      
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 0      
Initial Cost of Building & Improvements 27,494      
Cost Capitalized Subsequent to Acquisition 6,833      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 34,327      
Accumulated Depreciation 7,207      
Seniors Housing Operating | Charlottesville, VA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,651      
Initial Cost of Building & Improvements 91,468      
Cost Capitalized Subsequent to Acquisition 13,629      
Carrying Amount of Land 4,651      
Carrying Amount of Building and Improvements 105,097      
Accumulated Depreciation 15,730      
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 642      
Initial Cost of Land 1,098      
Initial Cost of Building & Improvements 12,462      
Cost Capitalized Subsequent to Acquisition 3,290      
Carrying Amount of Land 1,255      
Carrying Amount of Building and Improvements 15,595      
Accumulated Depreciation 3,709      
Seniors Housing Operating | Chelmsford, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,040      
Initial Cost of Building & Improvements 10,951      
Cost Capitalized Subsequent to Acquisition 2,018      
Carrying Amount of Land 1,120      
Carrying Amount of Building and Improvements 12,889      
Accumulated Depreciation 4,935      
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 9,566      
Initial Cost of Building & Improvements 25,886      
Cost Capitalized Subsequent to Acquisition 1,951      
Carrying Amount of Land 9,952      
Carrying Amount of Building and Improvements 27,451      
Accumulated Depreciation 1,660      
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 1,857      
Initial Cost of Building & Improvements 48,366      
Cost Capitalized Subsequent to Acquisition 1,512      
Carrying Amount of Land 1,917      
Carrying Amount of Building and Improvements 49,818      
Accumulated Depreciation 10,924      
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 5,636      
Initial Cost of Building & Improvements 43,191      
Cost Capitalized Subsequent to Acquisition 6,354      
Carrying Amount of Land 6,076      
Carrying Amount of Building and Improvements 49,105      
Accumulated Depreciation 12,352      
Seniors Housing Operating | Chula Vista, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,072      
Initial Cost of Building & Improvements 22,163      
Cost Capitalized Subsequent to Acquisition 1,484      
Carrying Amount of Land 2,162      
Carrying Amount of Building and Improvements 23,557      
Accumulated Depreciation 5,574      
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 2,591      
Initial Cost of Building & Improvements 14,215      
Cost Capitalized Subsequent to Acquisition 1,882      
Carrying Amount of Land 2,806      
Carrying Amount of Building and Improvements 15,882      
Accumulated Depreciation 3,197      
Seniors Housing Operating | Cincinnati, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,750      
Initial Cost of Building & Improvements 11,279      
Cost Capitalized Subsequent to Acquisition 79      
Carrying Amount of Land 1,750      
Carrying Amount of Building and Improvements 11,358      
Accumulated Depreciation 355      
Seniors Housing Operating | Cincinnati, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,060      
Initial Cost of Building & Improvements 109,388      
Cost Capitalized Subsequent to Acquisition 13,965      
Carrying Amount of Land 2,106      
Carrying Amount of Building and Improvements 123,307      
Accumulated Depreciation 30,961      
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 2,300      
Initial Cost of Building & Improvements 31,876      
Cost Capitalized Subsequent to Acquisition 1,658      
Carrying Amount of Land 2,300      
Carrying Amount of Building and Improvements 33,534      
Accumulated Depreciation 9,837      
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 2,430      
Initial Cost of Building & Improvements 9,928      
Cost Capitalized Subsequent to Acquisition 1,765      
Carrying Amount of Land 2,515      
Carrying Amount of Building and Improvements 11,608      
Accumulated Depreciation 3,183      
Seniors Housing Operating | Clay, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,296      
Initial Cost of Building & Improvements 10,695      
Cost Capitalized Subsequent to Acquisition 734      
Carrying Amount of Land 1,296      
Carrying Amount of Building and Improvements 11,429      
Accumulated Depreciation 702      
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 2,485      
Initial Cost of Building & Improvements 26,147      
Cost Capitalized Subsequent to Acquisition 2,040      
Carrying Amount of Land 2,500      
Carrying Amount of Building and Improvements 28,172      
Accumulated Depreciation 6,861      
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 1,050      
Initial Cost of Building & Improvements 17,082      
Cost Capitalized Subsequent to Acquisition 53      
Carrying Amount of Land 1,050      
Carrying Amount of Building and Improvements 17,135      
Accumulated Depreciation 1,385      
Seniors Housing Operating | Colorado Springs, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 800      
Initial Cost of Building & Improvements 14,756      
Cost Capitalized Subsequent to Acquisition 2,026      
Carrying Amount of Land 1,026      
Carrying Amount of Building and Improvements 16,556      
Accumulated Depreciation 4,211      
Seniors Housing Operating | Colts Neck, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 780      
Initial Cost of Building & Improvements 14,733      
Cost Capitalized Subsequent to Acquisition 2,599      
Carrying Amount of Land 1,131      
Carrying Amount of Building and Improvements 16,981      
Accumulated Depreciation 4,194      
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 9,102      
Initial Cost of Land 3,047      
Initial Cost of Building & Improvements 24,567      
Cost Capitalized Subsequent to Acquisition 2,439      
Carrying Amount of Land 3,264      
Carrying Amount of Building and Improvements 26,789      
Accumulated Depreciation 7,628      
Seniors Housing Operating | Crystal Lake, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 875      
Initial Cost of Building & Improvements 12,461      
Cost Capitalized Subsequent to Acquisition 1,556      
Carrying Amount of Land 971      
Carrying Amount of Building and Improvements 13,921      
Accumulated Depreciation 3,869      
Seniors Housing Operating | Dallas, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 6,330      
Initial Cost of Building & Improvements 114,794      
Cost Capitalized Subsequent to Acquisition 2,288      
Carrying Amount of Land 6,330      
Carrying Amount of Building and Improvements 117,082      
Accumulated Depreciation 16,762      
Seniors Housing Operating | Davenport, IA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,403      
Initial Cost of Building & Improvements 35,893      
Cost Capitalized Subsequent to Acquisition 4,830      
Carrying Amount of Land 1,614      
Carrying Amount of Building and Improvements 40,512      
Accumulated Depreciation 11,931      
Seniors Housing Operating | Decatur, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 0      
Cost Capitalized Subsequent to Acquisition 31,177      
Carrying Amount of Land 1,946      
Carrying Amount of Building and Improvements 29,231      
Accumulated Depreciation 7,458      
Seniors Housing Operating | Denver, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,450      
Initial Cost of Building & Improvements 19,389      
Cost Capitalized Subsequent to Acquisition 3,671      
Carrying Amount of Land 1,450      
Carrying Amount of Building and Improvements 23,060      
Accumulated Depreciation 4,957      
Seniors Housing Operating | Denver, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,910      
Initial Cost of Building & Improvements 35,838      
Cost Capitalized Subsequent to Acquisition 2,010      
Carrying Amount of Land 2,910      
Carrying Amount of Building and Improvements 37,848      
Accumulated Depreciation 9,701      
Seniors Housing Operating | Denver, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,411      
Initial Cost of Building & Improvements 104,641      
Cost Capitalized Subsequent to Acquisition 8,008      
Carrying Amount of Land 5,411      
Carrying Amount of Building and Improvements 112,649      
Accumulated Depreciation 3,672      
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 3,808      
Initial Cost of Building & Improvements 39,014      
Cost Capitalized Subsequent to Acquisition 2,045      
Carrying Amount of Land 3,959      
Carrying Amount of Building and Improvements 40,908      
Accumulated Depreciation 9,751      
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 1,957      
Initial Cost of Building & Improvements 14,431      
Cost Capitalized Subsequent to Acquisition 1,585      
Carrying Amount of Land 2,145      
Carrying Amount of Building and Improvements 15,828      
Accumulated Depreciation 5,414      
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 1,900      
Initial Cost of Building & Improvements 10,664      
Cost Capitalized Subsequent to Acquisition 1,211      
Carrying Amount of Land 1,914      
Carrying Amount of Building and Improvements 11,861      
Accumulated Depreciation 4,008      
Seniors Housing Operating | Dublin, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,680      
Initial Cost of Building & Improvements 43,423      
Cost Capitalized Subsequent to Acquisition 7,075      
Carrying Amount of Land 1,850      
Carrying Amount of Building and Improvements 50,328      
Accumulated Depreciation 16,148      
Seniors Housing Operating | Dublin, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,169      
Initial Cost of Building & Improvements 25,345      
Cost Capitalized Subsequent to Acquisition 112      
Carrying Amount of Land 1,169      
Carrying Amount of Building and Improvements 25,457      
Accumulated Depreciation 3,252      
Seniors Housing Operating | East Amherst, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,626      
Initial Cost of Building & Improvements 10,721      
Cost Capitalized Subsequent to Acquisition 863      
Carrying Amount of Land 1,626      
Carrying Amount of Building and Improvements 11,584      
Accumulated Depreciation 704      
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 69      
Initial Cost of Building & Improvements 45,991      
Cost Capitalized Subsequent to Acquisition 1,837      
Carrying Amount of Land 124      
Carrying Amount of Building and Improvements 47,773      
Accumulated Depreciation 11,123      
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 4,920      
Initial Cost of Building & Improvements 37,354      
Cost Capitalized Subsequent to Acquisition 1,982      
Carrying Amount of Land 4,986      
Carrying Amount of Building and Improvements 39,270      
Accumulated Depreciation 9,211      
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 4,145      
Initial Cost of Building & Improvements 33,744      
Cost Capitalized Subsequent to Acquisition 3,384      
Carrying Amount of Land 4,472      
Carrying Amount of Building and Improvements 36,801      
Accumulated Depreciation 8,971      
Seniors Housing Operating | Edgbaston, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,720      
Initial Cost of Building & Improvements 13,969      
Cost Capitalized Subsequent to Acquisition 1,524      
Carrying Amount of Land 2,926      
Carrying Amount of Building and Improvements 15,287      
Accumulated Depreciation 2,003      
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 4,561      
Initial Cost of Building & Improvements 25,047      
Cost Capitalized Subsequent to Acquisition 1,767      
Carrying Amount of Land 4,564      
Carrying Amount of Building and Improvements 26,811      
Accumulated Depreciation 6,634      
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 1,892      
Initial Cost of Building & Improvements 32,314      
Cost Capitalized Subsequent to Acquisition 3,498      
Carrying Amount of Land 1,911      
Carrying Amount of Building and Improvements 35,793      
Accumulated Depreciation 10,447      
Seniors Housing Operating | Edmonds, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,650      
Initial Cost of Building & Improvements 24,449      
Cost Capitalized Subsequent to Acquisition 8,055      
Carrying Amount of Land 1,686      
Carrying Amount of Building and Improvements 32,468      
Accumulated Depreciation 4,664      
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 8,211      
Initial Cost of Land 1,589      
Initial Cost of Building & Improvements 29,819      
Cost Capitalized Subsequent to Acquisition 3,016      
Carrying Amount of Land 1,753      
Carrying Amount of Building and Improvements 32,671      
Accumulated Depreciation 8,106      
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 10,735      
Initial Cost of Land 2,063      
Initial Cost of Building & Improvements 37,293      
Cost Capitalized Subsequent to Acquisition 3,913      
Carrying Amount of Land 2,209      
Carrying Amount of Building and Improvements 41,060      
Accumulated Depreciation 12,124      
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 5,190      
Initial Cost of Building & Improvements 52,171      
Cost Capitalized Subsequent to Acquisition 156      
Carrying Amount of Land 5,190      
Carrying Amount of Building and Improvements 52,327      
Accumulated Depreciation 0      
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 5,040      
Initial Cost of Building & Improvements 46,255      
Cost Capitalized Subsequent to Acquisition 5,021      
Carrying Amount of Land 5,040      
Carrying Amount of Building and Improvements 51,276      
Accumulated Depreciation 12,449      
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 690      
Initial Cost of Building & Improvements 12,520      
Cost Capitalized Subsequent to Acquisition 2,267      
Carrying Amount of Land 860      
Carrying Amount of Building and Improvements 14,617      
Accumulated Depreciation 3,781      
Seniors Housing Operating | Erie, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,422      
Initial Cost of Building & Improvements 8,198      
Cost Capitalized Subsequent to Acquisition 792      
Carrying Amount of Land 1,422      
Carrying Amount of Building and Improvements 8,990      
Accumulated Depreciation 586      
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 5,783      
Initial Cost of Building & Improvements 48,361      
Cost Capitalized Subsequent to Acquisition 7,998      
Carrying Amount of Land 6,242      
Carrying Amount of Building and Improvements 55,900      
Accumulated Depreciation 11,709      
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 3,120      
Initial Cost of Building & Improvements 43,868      
Cost Capitalized Subsequent to Acquisition 2,277      
Carrying Amount of Land 3,180      
Carrying Amount of Building and Improvements 46,085      
Accumulated Depreciation 10,815      
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 1,460      
Initial Cost of Building & Improvements 14,040      
Cost Capitalized Subsequent to Acquisition 2,711      
Carrying Amount of Land 1,460      
Carrying Amount of Building and Improvements 16,751      
Accumulated Depreciation 7,033      
Seniors Housing Operating | Fairfield, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,416      
Initial Cost of Building & Improvements 12,566      
Cost Capitalized Subsequent to Acquisition 294      
Carrying Amount of Land 1,416      
Carrying Amount of Building and Improvements 12,860      
Accumulated Depreciation 517      
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 3,408      
Initial Cost of Building & Improvements 17,970      
Cost Capitalized Subsequent to Acquisition 2,088      
Carrying Amount of Land 3,681      
Carrying Amount of Building and Improvements 19,785      
Accumulated Depreciation 3,622      
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 353      
Initial Cost of Building & Improvements 13,049      
Cost Capitalized Subsequent to Acquisition 729      
Carrying Amount of Land 385      
Carrying Amount of Building and Improvements 13,746      
Accumulated Depreciation 3,938      
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 1,292      
Initial Cost of Building & Improvements 9,496      
Cost Capitalized Subsequent to Acquisition 2,090      
Carrying Amount of Land 1,339      
Carrying Amount of Building and Improvements 11,539      
Accumulated Depreciation 3,515      
Seniors Housing Operating | Folsom, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,490      
Initial Cost of Building & Improvements 32,754      
Cost Capitalized Subsequent to Acquisition 93      
Carrying Amount of Land 1,490      
Carrying Amount of Building and Improvements 32,847      
Accumulated Depreciation 5,416      
Seniors Housing Operating | Fort Worth, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 7,118      
Initial Cost of Building & Improvements 52,772      
Cost Capitalized Subsequent to Acquisition 1,744      
Carrying Amount of Land 7,118      
Carrying Amount of Building and Improvements 54,516      
Accumulated Depreciation 1,910      
Seniors Housing Operating | Fort Worth, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,080      
Initial Cost of Building & Improvements 27,888      
Cost Capitalized Subsequent to Acquisition 4,371      
Carrying Amount of Land 2,080      
Carrying Amount of Building and Improvements 32,259      
Accumulated Depreciation 8,525      
Seniors Housing Operating | Fort Worth, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,740      
Initial Cost of Building & Improvements 19,799      
Cost Capitalized Subsequent to Acquisition 732      
Carrying Amount of Land 1,740      
Carrying Amount of Building and Improvements 20,531      
Accumulated Depreciation 2,435      
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 3,400      
Initial Cost of Building & Improvements 25,300      
Cost Capitalized Subsequent to Acquisition 5,295      
Carrying Amount of Land 3,456      
Carrying Amount of Building and Improvements 30,539      
Accumulated Depreciation 11,041      
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 23,720      
Initial Cost of Land 2,459      
Initial Cost of Building & Improvements 33,048      
Cost Capitalized Subsequent to Acquisition 1,755      
Carrying Amount of Land 2,459      
Carrying Amount of Building and Improvements 34,803      
Accumulated Depreciation 0      
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 2,720      
Initial Cost of Building & Improvements 14,813      
Cost Capitalized Subsequent to Acquisition 1,884      
Carrying Amount of Land 2,926      
Carrying Amount of Building and Improvements 16,491      
Accumulated Depreciation 2,706      
Seniors Housing Operating | Fullerton, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,964      
Initial Cost of Building & Improvements 19,989      
Cost Capitalized Subsequent to Acquisition 1,168      
Carrying Amount of Land 1,998      
Carrying Amount of Building and Improvements 21,123      
Accumulated Depreciation 5,300      
Seniors Housing Operating | Gahanna, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 772      
Initial Cost of Building & Improvements 11,214      
Cost Capitalized Subsequent to Acquisition 1,884      
Carrying Amount of Land 787      
Carrying Amount of Building and Improvements 13,083      
Accumulated Depreciation 3,180      
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 1,143      
Initial Cost of Building & Improvements 10,831      
Cost Capitalized Subsequent to Acquisition 1,364      
Carrying Amount of Land 1,164      
Carrying Amount of Building and Improvements 12,174      
Accumulated Depreciation 9,112      
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 1,560      
Initial Cost of Building & Improvements 15,947      
Cost Capitalized Subsequent to Acquisition 1,155      
Carrying Amount of Land 1,583      
Carrying Amount of Building and Improvements 17,079      
Accumulated Depreciation 4,706      
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 2,160      
Initial Cost of Building & Improvements 28,246      
Cost Capitalized Subsequent to Acquisition 2,025      
Carrying Amount of Land 2,180      
Carrying Amount of Building and Improvements 30,251      
Accumulated Depreciation 9,137      
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 4,594      
Initial Cost of Building & Improvements 35,236      
Cost Capitalized Subsequent to Acquisition 2,276      
Carrying Amount of Land 4,643      
Carrying Amount of Building and Improvements 37,463      
Accumulated Depreciation 10,265      
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 2,090      
Initial Cost of Building & Improvements 69,288      
Cost Capitalized Subsequent to Acquisition 4,276      
Carrying Amount of Land 2,090      
Carrying Amount of Building and Improvements 73,564      
Accumulated Depreciation 17,854      
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 1,520      
Initial Cost of Building & Improvements 33,513      
Cost Capitalized Subsequent to Acquisition 1,578      
Carrying Amount of Land 1,634      
Carrying Amount of Building and Improvements 34,977      
Accumulated Depreciation 8,005      
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 2,040      
Initial Cost of Building & Improvements 30,670      
Cost Capitalized Subsequent to Acquisition 710      
Carrying Amount of Land 2,040      
Carrying Amount of Building and Improvements 31,380      
Accumulated Depreciation 7,189      
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 636      
Initial Cost of Building & Improvements 5,617      
Cost Capitalized Subsequent to Acquisition 732      
Carrying Amount of Land 683      
Carrying Amount of Building and Improvements 6,302      
Accumulated Depreciation 1,224      
Seniors Housing Operating | Grosse Pointe Woods, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 950      
Initial Cost of Building & Improvements 13,662      
Cost Capitalized Subsequent to Acquisition 891      
Carrying Amount of Land 950      
Carrying Amount of Building and Improvements 14,553      
Accumulated Depreciation 3,255      
Seniors Housing Operating | Grosse Pointe Woods, MI        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,430      
Initial Cost of Building & Improvements 31,777      
Cost Capitalized Subsequent to Acquisition 1,282      
Carrying Amount of Land 1,435      
Carrying Amount of Building and Improvements 33,054      
Accumulated Depreciation 7,444      
Seniors Housing Operating | Grove City, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 36,420      
Initial Cost of Land 3,575      
Initial Cost of Building & Improvements 85,764      
Cost Capitalized Subsequent to Acquisition 865      
Carrying Amount of Land 3,491      
Carrying Amount of Building and Improvements 86,713      
Accumulated Depreciation 3,901      
Seniors Housing Operating | Guildford, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,361      
Initial Cost of Building & Improvements 56,494      
Cost Capitalized Subsequent to Acquisition 5,122      
Carrying Amount of Land 5,766      
Carrying Amount of Building and Improvements 61,211      
Accumulated Depreciation 13,881      
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 890      
Initial Cost of Building & Improvements 27,931      
Cost Capitalized Subsequent to Acquisition 2,478      
Carrying Amount of Land 935      
Carrying Amount of Building and Improvements 30,364      
Accumulated Depreciation 6,640      
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 520      
Initial Cost of Building & Improvements 16,363      
Cost Capitalized Subsequent to Acquisition 590      
Carrying Amount of Land 527      
Carrying Amount of Building and Improvements 16,946      
Accumulated Depreciation 2,315      
Seniors Housing Operating | Hamburg, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 967      
Initial Cost of Building & Improvements 10,006      
Cost Capitalized Subsequent to Acquisition 821      
Carrying Amount of Land 967      
Carrying Amount of Building and Improvements 10,827      
Accumulated Depreciation 622      
Seniors Housing Operating | Hamilton, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,163      
Initial Cost of Building & Improvements 11,960      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,163      
Carrying Amount of Building and Improvements 11,960      
Accumulated Depreciation 364      
Seniors Housing Operating | Hampshire, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,172      
Initial Cost of Building & Improvements 26,035      
Cost Capitalized Subsequent to Acquisition 2,581      
Carrying Amount of Land 4,496      
Carrying Amount of Building and Improvements 28,292      
Accumulated Depreciation 6,835      
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 709      
Initial Cost of Building & Improvements 9,889      
Cost Capitalized Subsequent to Acquisition 446      
Carrying Amount of Land 709      
Carrying Amount of Building and Improvements 10,335      
Accumulated Depreciation 706      
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 1,880      
Initial Cost of Building & Improvements 33,993      
Cost Capitalized Subsequent to Acquisition 2,648      
Carrying Amount of Land 1,904      
Carrying Amount of Building and Improvements 36,617      
Accumulated Depreciation 8,274      
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 1,190      
Initial Cost of Building & Improvements 11,600      
Cost Capitalized Subsequent to Acquisition 1,111      
Carrying Amount of Land 1,253      
Carrying Amount of Building and Improvements 12,648      
Accumulated Depreciation 4,139      
Seniors Housing Operating | High Wycombe, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,567      
Initial Cost of Building & Improvements 13,422      
Cost Capitalized Subsequent to Acquisition 1,140      
Carrying Amount of Land 3,711      
Carrying Amount of Building and Improvements 14,418      
Accumulated Depreciation 1,087      
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 2,820      
Initial Cost of Building & Improvements 15,832      
Cost Capitalized Subsequent to Acquisition 796      
Carrying Amount of Land 2,820      
Carrying Amount of Building and Improvements 16,628      
Accumulated Depreciation 3,013      
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 2,250      
Initial Cost of Building & Improvements 25,313      
Cost Capitalized Subsequent to Acquisition 1,556      
Carrying Amount of Land 2,271      
Carrying Amount of Building and Improvements 26,848      
Accumulated Depreciation 7,216      
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 1,440      
Initial Cost of Building & Improvements 32,292      
Cost Capitalized Subsequent to Acquisition 318      
Carrying Amount of Land 1,444      
Carrying Amount of Building and Improvements 32,606      
Accumulated Depreciation 5,373      
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 3,957      
Initial Cost of Building & Improvements 35,337      
Cost Capitalized Subsequent to Acquisition 2,351      
Carrying Amount of Land 4,145      
Carrying Amount of Building and Improvements 37,500      
Accumulated Depreciation 8,607      
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 2,332      
Initial Cost of Building & Improvements 12,144      
Cost Capitalized Subsequent to Acquisition 1,851      
Carrying Amount of Land 2,516      
Carrying Amount of Building and Improvements 13,811      
Accumulated Depreciation 2,788      
Seniors Housing Operating | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,830      
Initial Cost of Building & Improvements 55,674      
Cost Capitalized Subsequent to Acquisition 7,693      
Carrying Amount of Land 3,830      
Carrying Amount of Building and Improvements 63,367      
Accumulated Depreciation 16,958      
Seniors Housing Operating | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,040      
Initial Cost of Building & Improvements 31,965      
Cost Capitalized Subsequent to Acquisition 5,466      
Carrying Amount of Land 1,040      
Carrying Amount of Building and Improvements 37,431      
Accumulated Depreciation 8,478      
Seniors Housing Operating | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,750      
Initial Cost of Building & Improvements 15,603      
Cost Capitalized Subsequent to Acquisition 1,595      
Carrying Amount of Land 1,750      
Carrying Amount of Building and Improvements 17,198      
Accumulated Depreciation 1,485      
Seniors Housing Operating | Houston, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 960      
Initial Cost of Building & Improvements 15,275      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 960      
Carrying Amount of Building and Improvements 15,275      
Accumulated Depreciation 7,461      
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 8,096      
Initial Cost of Land 1,066      
Initial Cost of Building & Improvements 21,577      
Cost Capitalized Subsequent to Acquisition 1,348      
Carrying Amount of Land 1,149      
Carrying Amount of Building and Improvements 22,842      
Accumulated Depreciation 5,460      
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 3,808      
Initial Cost of Building & Improvements 31,172      
Cost Capitalized Subsequent to Acquisition 2,646      
Carrying Amount of Land 3,931      
Carrying Amount of Building and Improvements 33,695      
Accumulated Depreciation 9,396      
Seniors Housing Operating | Independence, MO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,550      
Initial Cost of Building & Improvements 14,463      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,550      
Carrying Amount of Building and Improvements 14,463      
Accumulated Depreciation 396      
Seniors Housing Operating | Irving, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,030      
Initial Cost of Building & Improvements 6,823      
Cost Capitalized Subsequent to Acquisition 882      
Carrying Amount of Land 1,030      
Carrying Amount of Building and Improvements 7,705      
Accumulated Depreciation 2,246      
Seniors Housing Operating | Jacksonville, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 6,550      
Initial Cost of Building & Improvements 29,316      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 6,550      
Carrying Amount of Building and Improvements 29,316      
Accumulated Depreciation 100      
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 1,580      
Initial Cost of Building & Improvements 23,285      
Cost Capitalized Subsequent to Acquisition 1,070      
Carrying Amount of Land 1,588      
Carrying Amount of Building and Improvements 24,347      
Accumulated Depreciation 5,794      
Seniors Housing Operating | Johnson City, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,392      
Initial Cost of Building & Improvements 11,828      
Cost Capitalized Subsequent to Acquisition 876      
Carrying Amount of Land 1,392      
Carrying Amount of Building and Improvements 12,704      
Accumulated Depreciation 727      
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 1,689      
Initial Cost of Building & Improvements 28,670      
Cost Capitalized Subsequent to Acquisition 1,972      
Carrying Amount of Land 1,750      
Carrying Amount of Building and Improvements 30,581      
Accumulated Depreciation 7,368      
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 1,820      
Initial Cost of Building & Improvements 34,898      
Cost Capitalized Subsequent to Acquisition 5,277      
Carrying Amount of Land 1,889      
Carrying Amount of Building and Improvements 40,106      
Accumulated Depreciation 13,314      
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 4,880      
Initial Cost of Land 1,930      
Initial Cost of Building & Improvements 39,997      
Cost Capitalized Subsequent to Acquisition 5,488      
Carrying Amount of Land 1,987      
Carrying Amount of Building and Improvements 45,428      
Accumulated Depreciation 14,964      
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 541      
Initial Cost of Building & Improvements 23,962      
Cost Capitalized Subsequent to Acquisition 320      
Carrying Amount of Land 548      
Carrying Amount of Building and Improvements 24,275      
Accumulated Depreciation 3,884      
Seniors Housing Operating | Kelowna, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 5,176      
Initial Cost of Land 2,688      
Initial Cost of Building & Improvements 13,647      
Cost Capitalized Subsequent to Acquisition 2,123      
Carrying Amount of Land 2,895      
Carrying Amount of Building and Improvements 15,563      
Accumulated Depreciation 4,386      
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 2,700      
Initial Cost of Building & Improvements 30,204      
Cost Capitalized Subsequent to Acquisition 5,587      
Carrying Amount of Land 3,223      
Carrying Amount of Building and Improvements 35,268      
Accumulated Depreciation 13,375      
Seniors Housing Operating | Kenner, LA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,100      
Initial Cost of Building & Improvements 10,036      
Cost Capitalized Subsequent to Acquisition 1,392      
Carrying Amount of Land 1,100      
Carrying Amount of Building and Improvements 11,428      
Accumulated Depreciation 10,059      
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 1,050      
Initial Cost of Building & Improvements 22,946      
Cost Capitalized Subsequent to Acquisition 833      
Carrying Amount of Land 1,103      
Carrying Amount of Building and Improvements 23,726      
Accumulated Depreciation 5,474      
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 4,229      
Initial Cost of Land 1,030      
Initial Cost of Building & Improvements 11,416      
Cost Capitalized Subsequent to Acquisition 1,597      
Carrying Amount of Land 1,115      
Carrying Amount of Building and Improvements 12,928      
Accumulated Depreciation 2,200      
Seniors Housing Operating | Kingwood, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 480      
Initial Cost of Building & Improvements 9,777      
Cost Capitalized Subsequent to Acquisition 854      
Carrying Amount of Land 480      
Carrying Amount of Building and Improvements 10,631      
Accumulated Depreciation 2,704      
Seniors Housing Operating | Kingwood, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,683      
Initial Cost of Building & Improvements 24,207      
Cost Capitalized Subsequent to Acquisition 2,471      
Carrying Amount of Land 1,683      
Carrying Amount of Building and Improvements 26,678      
Accumulated Depreciation 3,931      
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 1,880      
Initial Cost of Building & Improvements 4,315      
Cost Capitalized Subsequent to Acquisition 1,231      
Carrying Amount of Land 1,880      
Carrying Amount of Building and Improvements 5,546      
Accumulated Depreciation 2,073      
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 1,329      
Initial Cost of Land 708      
Initial Cost of Building & Improvements 2,744      
Cost Capitalized Subsequent to Acquisition 296      
Carrying Amount of Land 684      
Carrying Amount of Building and Improvements 3,064      
Accumulated Depreciation 901      
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 3,323      
Initial Cost of Land 1,093      
Initial Cost of Building & Improvements 7,327      
Cost Capitalized Subsequent to Acquisition 889      
Carrying Amount of Land 1,182      
Carrying Amount of Building and Improvements 8,127      
Accumulated Depreciation 2,513      
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 12,374      
Initial Cost of Land 1,341      
Initial Cost of Building & Improvements 13,939      
Cost Capitalized Subsequent to Acquisition 4,284      
Carrying Amount of Land 1,400      
Carrying Amount of Building and Improvements 18,164      
Accumulated Depreciation 3,702      
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 2,950      
Initial Cost of Building & Improvements 16,591      
Cost Capitalized Subsequent to Acquisition 1,269      
Carrying Amount of Land 2,973      
Carrying Amount of Building and Improvements 17,837      
Accumulated Depreciation 4,369      
Seniors Housing Operating | Lackawanna, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,011      
Initial Cost of Building & Improvements 5,254      
Cost Capitalized Subsequent to Acquisition 478      
Carrying Amount of Land 1,011      
Carrying Amount of Building and Improvements 5,732      
Accumulated Depreciation 453      
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 1,750      
Initial Cost of Building & Improvements 11,848      
Cost Capitalized Subsequent to Acquisition 2,372      
Carrying Amount of Land 1,867      
Carrying Amount of Building and Improvements 14,103      
Accumulated Depreciation 4,471      
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 12,820      
Initial Cost of Building & Improvements 75,926      
Cost Capitalized Subsequent to Acquisition 19,001      
Carrying Amount of Land 12,820      
Carrying Amount of Building and Improvements 94,927      
Accumulated Depreciation 18,601      
Seniors Housing Operating | Laguna Woods, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 11,280      
Initial Cost of Building & Improvements 76,485      
Cost Capitalized Subsequent to Acquisition 12,995      
Carrying Amount of Land 11,280      
Carrying Amount of Building and Improvements 89,480      
Accumulated Depreciation 15,798      
Seniors Housing Operating | Laguna Woods, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 9,150      
Initial Cost of Building & Improvements 57,842      
Cost Capitalized Subsequent to Acquisition 11,547      
Carrying Amount of Land 9,150      
Carrying Amount of Building and Improvements 69,389      
Accumulated Depreciation 12,299      
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 1,470      
Initial Cost of Building & Improvements 9,830      
Cost Capitalized Subsequent to Acquisition 2,707      
Carrying Amount of Land 1,470      
Carrying Amount of Building and Improvements 12,537      
Accumulated Depreciation 4,401      
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 700      
Initial Cost of Building & Improvements 15,295      
Cost Capitalized Subsequent to Acquisition 1,364      
Carrying Amount of Land 712      
Carrying Amount of Building and Improvements 16,647      
Accumulated Depreciation 5,201      
Seniors Housing Operating | Lancaster, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,252      
Initial Cost of Building & Improvements 11,084      
Cost Capitalized Subsequent to Acquisition 976      
Carrying Amount of Land 1,252      
Carrying Amount of Building and Improvements 12,060      
Accumulated Depreciation 689      
Seniors Housing Operating | Laval, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 22,375      
Initial Cost of Land 2,105      
Initial Cost of Building & Improvements 32,161      
Cost Capitalized Subsequent to Acquisition 5,368      
Carrying Amount of Land 2,214      
Carrying Amount of Building and Improvements 37,420      
Accumulated Depreciation 4,851      
Seniors Housing Operating | Laval, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 4,306      
Initial Cost of Land 2,383      
Initial Cost of Building & Improvements 5,968      
Cost Capitalized Subsequent to Acquisition 1,419      
Carrying Amount of Land 2,507      
Carrying Amount of Building and Improvements 7,263      
Accumulated Depreciation 894      
Seniors Housing Operating | Lawrenceville, GA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,500      
Initial Cost of Building & Improvements 29,003      
Cost Capitalized Subsequent to Acquisition 794      
Carrying Amount of Land 1,529      
Carrying Amount of Building and Improvements 29,768      
Accumulated Depreciation 7,241      
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 4,682      
Initial Cost of Building & Improvements 17,835      
Cost Capitalized Subsequent to Acquisition 1,727      
Carrying Amount of Land 4,871      
Carrying Amount of Building and Improvements 19,373      
Accumulated Depreciation 1,338      
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 2,490      
Initial Cost of Building & Improvements 32,493      
Cost Capitalized Subsequent to Acquisition 3,749      
Carrying Amount of Land 5,610      
Carrying Amount of Building and Improvements 33,122      
Accumulated Depreciation 8,386      
Seniors Housing Operating | Lecanto, 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 200      
Initial Cost of Building & Improvements 6,900      
Cost Capitalized Subsequent to Acquisition 421      
Carrying Amount of Land 208      
Carrying Amount of Building and Improvements 7,313      
Accumulated Depreciation 2,884      
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 826      
Initial Cost of Building & Improvements 26,251      
Cost Capitalized Subsequent to Acquisition 1,332      
Carrying Amount of Land 922      
Carrying Amount of Building and Improvements 27,487      
Accumulated Depreciation 7,167      
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 9      
Initial Cost of Building & Improvements 19,958      
Cost Capitalized Subsequent to Acquisition 1,906      
Carrying Amount of Land 131      
Carrying Amount of Building and Improvements 21,742      
Accumulated Depreciation 5,324      
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 800      
Initial Cost of Building & Improvements 21,984      
Cost Capitalized Subsequent to Acquisition 1,489      
Carrying Amount of Land 861      
Carrying Amount of Building and Improvements 23,412      
Accumulated Depreciation 5,695      
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 1,240      
Initial Cost of Building & Improvements 17,908      
Cost Capitalized Subsequent to Acquisition 11,640      
Carrying Amount of Land 1,272      
Carrying Amount of Building and Improvements 29,516      
Accumulated Depreciation 5,671      
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 3,350      
Initial Cost of Building & Improvements 38,461      
Cost Capitalized Subsequent to Acquisition 3,016      
Carrying Amount of Land 3,358      
Carrying Amount of Building and Improvements 41,469      
Accumulated Depreciation 9,556      
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 8,000      
Initial Cost of Building & Improvements 44,424      
Cost Capitalized Subsequent to Acquisition 919      
Carrying Amount of Land 8,017      
Carrying Amount of Building and Improvements 45,326      
Accumulated Depreciation 3,595      
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 2,130      
Initial Cost of Building & Improvements 59,943      
Cost Capitalized Subsequent to Acquisition 1,755      
Carrying Amount of Land 2,218      
Carrying Amount of Building and Improvements 61,610      
Accumulated Depreciation 14,083      
Seniors Housing Operating | London, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,121      
Initial Cost of Building & Improvements 10,027      
Cost Capitalized Subsequent to Acquisition 1,988      
Carrying Amount of Land 3,370      
Carrying Amount of Building and Improvements 11,766      
Accumulated Depreciation 1,952      
Seniors Housing Operating | London, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 7,691      
Initial Cost of Building & Improvements 16,797      
Cost Capitalized Subsequent to Acquisition 1,369      
Carrying Amount of Land 8,001      
Carrying Amount of Building and Improvements 17,781      
Accumulated Depreciation 1,592      
Seniors Housing Operating | London, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 987      
Initial Cost of Building & Improvements 8,228      
Cost Capitalized Subsequent to Acquisition 1,204      
Carrying Amount of Land 1,084      
Carrying Amount of Building and Improvements 9,335      
Accumulated Depreciation 1,829      
Seniors Housing Operating | London, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 11,200      
Initial Cost of Land 1,969      
Initial Cost of Building & Improvements 16,985      
Cost Capitalized Subsequent to Acquisition 2,534      
Carrying Amount of Land 2,102      
Carrying Amount of Building and Improvements 19,386      
Accumulated Depreciation 3,680      
Seniors Housing Operating | London, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 32      
Initial Cost of Land 1,445      
Initial Cost of Building & Improvements 13,631      
Cost Capitalized Subsequent to Acquisition 2,213      
Carrying Amount of Land 1,667      
Carrying Amount of Building and Improvements 15,622      
Accumulated Depreciation 2,672      
Seniors Housing Operating | Longueuil, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 9,155      
Initial Cost of Land 3,992      
Initial Cost of Building & Improvements 23,711      
Cost Capitalized Subsequent to Acquisition 4,584      
Carrying Amount of Land 4,340      
Carrying Amount of Building and Improvements 27,947      
Accumulated Depreciation 5,201      
Seniors Housing Operating | Lorain, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,394      
Initial Cost of Building & Improvements 12,956      
Cost Capitalized Subsequent to Acquisition 23      
Carrying Amount of Land 1,394      
Carrying Amount of Building and Improvements 12,979      
Accumulated Depreciation 340      
Seniors Housing Operating | Los Angeles, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 58,514      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 114,438      
Cost Capitalized Subsequent to Acquisition 6,152      
Carrying Amount of Land 0      
Carrying Amount of Building and Improvements 120,590      
Accumulated Depreciation 31,800      
Seniors Housing Operating | Los Angeles, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,540      
Initial Cost of Building & Improvements 19,007      
Cost Capitalized Subsequent to Acquisition 3,369      
Carrying Amount of Land 3,540      
Carrying Amount of Building and Improvements 22,376      
Accumulated Depreciation 5,696      
Seniors Housing Operating | Los Angeles, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 28,050      
Cost Capitalized Subsequent to Acquisition 5,879      
Carrying Amount of Land 71      
Carrying Amount of Building and Improvements 33,858      
Accumulated Depreciation 4,310      
Seniors Housing Operating | Louisville, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,420      
Initial Cost of Building & Improvements 20,816      
Cost Capitalized Subsequent to Acquisition 2,470      
Carrying Amount of Land 2,420      
Carrying Amount of Building and Improvements 23,286      
Accumulated Depreciation 6,078      
Seniors Housing Operating | Louisville, KY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 13,650      
Initial Cost of Land 1,600      
Initial Cost of Building & Improvements 20,326      
Cost Capitalized Subsequent to Acquisition 1,044      
Carrying Amount of Land 1,600      
Carrying Amount of Building and Improvements 21,370      
Accumulated Depreciation 5,524      
Seniors Housing Operating | Louisville, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,023      
Initial Cost of Building & Improvements 31,562      
Cost Capitalized Subsequent to Acquisition 1,769      
Carrying Amount of Land 2,023      
Carrying Amount of Building and Improvements 33,331      
Accumulated Depreciation 1,416      
Seniors Housing Operating | Louisville, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,158      
Initial Cost of Building & Improvements 26,656      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,158      
Carrying Amount of Building and Improvements 26,656      
Accumulated Depreciation 447      
Seniors Housing Operating | Louisville, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,672      
Initial Cost of Building & Improvements 50,972      
Cost Capitalized Subsequent to Acquisition 6,311      
Carrying Amount of Land 2,672      
Carrying Amount of Building and Improvements 57,283      
Accumulated Depreciation 2,492      
Seniors Housing Operating | Louisville, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,480      
Initial Cost of Building & Improvements 15,546      
Cost Capitalized Subsequent to Acquisition 682      
Carrying Amount of Land 1,480      
Carrying Amount of Building and Improvements 16,228      
Accumulated Depreciation 881      
Seniors Housing Operating | Louisville, CO        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,567      
Initial Cost of Building & Improvements 42,712      
Cost Capitalized Subsequent to Acquisition 2,681      
Carrying Amount of Land 2,567      
Carrying Amount of Building and Improvements 45,393      
Accumulated Depreciation 1,811      
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 3,165      
Initial Cost of Building & Improvements 45,200      
Cost Capitalized Subsequent to Acquisition 2,707      
Carrying Amount of Land 3,736      
Carrying Amount of Building and Improvements 47,336      
Accumulated Depreciation 11,558      
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 1,605      
Initial Cost of Building & Improvements 27,249      
Cost Capitalized Subsequent to Acquisition 913      
Carrying Amount of Land 1,606      
Carrying Amount of Building and Improvements 28,161      
Accumulated Depreciation 3,280      
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 1,651      
Initial Cost of Building & Improvements 17,194      
Cost Capitalized Subsequent to Acquisition 2,421      
Carrying Amount of Land 1,800      
Carrying Amount of Building and Improvements 19,466      
Accumulated Depreciation 6,072      
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 1,300      
Initial Cost of Building & Improvements 12,125      
Cost Capitalized Subsequent to Acquisition 2,947      
Carrying Amount of Land 1,312      
Carrying Amount of Building and Improvements 15,060      
Accumulated Depreciation 5,908      
Seniors Housing Operating | Maple Ridge, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 8,331      
Initial Cost of Land 2,875      
Initial Cost of Building & Improvements 11,922      
Cost Capitalized Subsequent to Acquisition 5,974      
Carrying Amount of Land 3,097      
Carrying Amount of Building and Improvements 17,674      
Accumulated Depreciation 1,858      
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 6,335      
Initial Cost of Land 1,278      
Initial Cost of Building & Improvements 12,113      
Cost Capitalized Subsequent to Acquisition 1,088      
Carrying Amount of Land 1,385      
Carrying Amount of Building and Improvements 13,094      
Accumulated Depreciation 2,154      
Seniors Housing Operating | Markham, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 50,918      
Initial Cost of Land 3,727      
Initial Cost of Building & Improvements 48,939      
Cost Capitalized Subsequent to Acquisition 4,472      
Carrying Amount of Land 4,032      
Carrying Amount of Building and Improvements 53,106      
Accumulated Depreciation 15,995      
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 2,222      
Initial Cost of Building & Improvements 14,888      
Cost Capitalized Subsequent to Acquisition 1,542      
Carrying Amount of Land 2,250      
Carrying Amount of Building and Improvements 16,402      
Accumulated Depreciation 4,281      
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 620      
Initial Cost of Building & Improvements 4,780      
Cost Capitalized Subsequent to Acquisition 1,652      
Carrying Amount of Land 620      
Carrying Amount of Building and Improvements 6,432      
Accumulated Depreciation 2,434      
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 10,438      
Initial Cost of Land 1,432      
Initial Cost of Building & Improvements 14,141      
Cost Capitalized Subsequent to Acquisition 998      
Carrying Amount of Land 1,541      
Carrying Amount of Building and Improvements 15,030      
Accumulated Depreciation 3,491      
Seniors Housing Operating | Medina, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,683      
Initial Cost of Building & Improvements 12,036      
Cost Capitalized Subsequent to Acquisition 457      
Carrying Amount of Land 1,683      
Carrying Amount of Building and Improvements 12,493      
Accumulated Depreciation 545      
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 7,070      
Initial Cost of Building & Improvements 48,257      
Cost Capitalized Subsequent to Acquisition 31,764      
Carrying Amount of Land 7,070      
Carrying Amount of Building and Improvements 80,021      
Accumulated Depreciation 25,011      
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 4,280      
Initial Cost of Building & Improvements 73,283      
Cost Capitalized Subsequent to Acquisition 7,212      
Carrying Amount of Land 4,326      
Carrying Amount of Building and Improvements 80,449      
Accumulated Depreciation 18,189      
Seniors Housing Operating | Memphis, TN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,800      
Initial Cost of Building & Improvements 17,744      
Cost Capitalized Subsequent to Acquisition 2,736      
Carrying Amount of Land 1,800      
Carrying Amount of Building and Improvements 20,480      
Accumulated Depreciation 6,270      
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 1,020      
Initial Cost of Building & Improvements 6,984      
Cost Capitalized Subsequent to Acquisition 2,256      
Carrying Amount of Land 1,020      
Carrying Amount of Building and Improvements 9,240      
Accumulated Depreciation 2,550      
Seniors Housing Operating | Mesa, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 950      
Initial Cost of Building & Improvements 9,087      
Cost Capitalized Subsequent to Acquisition 2,881      
Carrying Amount of Land 950      
Carrying Amount of Building and Improvements 11,968      
Accumulated Depreciation 5,472      
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 725      
Initial Cost of Building & Improvements 27,708      
Cost Capitalized Subsequent to Acquisition 948      
Carrying Amount of Land 725      
Carrying Amount of Building and Improvements 28,656      
Accumulated Depreciation 6,367      
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 10,150      
Initial Cost of Building & Improvements 60,274      
Cost Capitalized Subsequent to Acquisition 3,448      
Carrying Amount of Land 10,179      
Carrying Amount of Building and Improvements 63,693      
Accumulated Depreciation 20,215      
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 19,890      
Initial Cost of Land 4,542      
Initial Cost of Building & Improvements 25,321      
Cost Capitalized Subsequent to Acquisition 3,668      
Carrying Amount of Land 4,882      
Carrying Amount of Building and Improvements 28,649      
Accumulated Depreciation 4,305      
Seniors Housing Operating | Minnetonka, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 920      
Initial Cost of Building & Improvements 29,344      
Cost Capitalized Subsequent to Acquisition 1,257      
Carrying Amount of Land 964      
Carrying Amount of Building and Improvements 30,557      
Accumulated Depreciation 6,768      
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 13,570      
Initial Cost of Land 6,600      
Initial Cost of Building & Improvements 52,118      
Cost Capitalized Subsequent to Acquisition 8,447      
Carrying Amount of Land 6,600      
Carrying Amount of Building and Improvements 60,565      
Accumulated Depreciation 9,097      
Seniors Housing Operating | Mississauga, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 8,491      
Initial Cost of Land 1,602      
Initial Cost of Building & Improvements 17,996      
Cost Capitalized Subsequent to Acquisition 1,803      
Carrying Amount of Land 1,711      
Carrying Amount of Building and Improvements 19,690      
Accumulated Depreciation 4,855      
Seniors Housing Operating | Mississauga, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 2,861      
Initial Cost of Land 873      
Initial Cost of Building & Improvements 4,655      
Cost Capitalized Subsequent to Acquisition 569      
Carrying Amount of Land 934      
Carrying Amount of Building and Improvements 5,163      
Accumulated Depreciation 1,359      
Seniors Housing Operating | Mississauga, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 27,219      
Initial Cost of Land 3,649      
Initial Cost of Building & Improvements 35,137      
Cost Capitalized Subsequent to Acquisition 3,795      
Carrying Amount of Land 3,946      
Carrying Amount of Building and Improvements 38,635      
Accumulated Depreciation 9,565      
Seniors Housing Operating | Mississauga, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 6,066      
Initial Cost of Land 2,548      
Initial Cost of Building & Improvements 15,158      
Cost Capitalized Subsequent to Acquisition 2,904      
Carrying Amount of Land 2,724      
Carrying Amount of Building and Improvements 17,886      
Accumulated Depreciation 3,821      
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 550      
Initial Cost of Building & Improvements 7,490      
Cost Capitalized Subsequent to Acquisition 563      
Carrying Amount of Land 553      
Carrying Amount of Building and Improvements 8,050      
Accumulated Depreciation 2,968      
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 5,146      
Initial Cost of Building & Improvements 26,665      
Cost Capitalized Subsequent to Acquisition 3,279      
Carrying Amount of Land 5,563      
Carrying Amount of Building and Improvements 29,527      
Accumulated Depreciation 8,637      
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 6,440      
Initial Cost of Building & Improvements 29,101      
Cost Capitalized Subsequent to Acquisition 2,549      
Carrying Amount of Land 6,443      
Carrying Amount of Building and Improvements 31,647      
Accumulated Depreciation 7,438      
Seniors Housing Operating | Montgomery, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 6,482      
Initial Cost of Building & Improvements 83,642      
Cost Capitalized Subsequent to Acquisition 12,311      
Carrying Amount of Land 6,482      
Carrying Amount of Building and Improvements 95,953      
Accumulated Depreciation 9,510      
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 3,530      
Initial Cost of Building & Improvements 18,246      
Cost Capitalized Subsequent to Acquisition 7,214      
Carrying Amount of Land 4,291      
Carrying Amount of Building and Improvements 24,699      
Accumulated Depreciation 10,011      
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 11,903      
Initial Cost of Land 4,407      
Initial Cost of Building & Improvements 23,719      
Cost Capitalized Subsequent to Acquisition 7,965      
Carrying Amount of Land 4,637      
Carrying Amount of Building and Improvements 31,454      
Accumulated Depreciation 3,715      
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 2,060      
Initial Cost of Building & Improvements 51,628      
Cost Capitalized Subsequent to Acquisition 5,205      
Carrying Amount of Land 2,095      
Carrying Amount of Building and Improvements 56,798      
Accumulated Depreciation 12,519      
Seniors Housing Operating | Moose Jaw, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 1,973      
Initial Cost of Land 582      
Initial Cost of Building & Improvements 12,973      
Cost Capitalized Subsequent to Acquisition 1,885      
Carrying Amount of Land 621      
Carrying Amount of Building and Improvements 14,819      
Accumulated Depreciation 3,548      
Seniors Housing Operating | Morton Grove, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,900      
Initial Cost of Building & Improvements 19,374      
Cost Capitalized Subsequent to Acquisition 864      
Carrying Amount of Land 1,900      
Carrying Amount of Building and Improvements 20,238      
Accumulated Depreciation 4,284      
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 1,950      
Initial Cost of Building & Improvements 19,182      
Cost Capitalized Subsequent to Acquisition 811      
Carrying Amount of Land 1,950      
Carrying Amount of Building and Improvements 19,993      
Accumulated Depreciation 2,350      
Seniors Housing Operating | Naperville, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,550      
Initial Cost of Building & Improvements 12,237      
Cost Capitalized Subsequent to Acquisition 2,195      
Carrying Amount of Land 1,550      
Carrying Amount of Building and Improvements 14,432      
Accumulated Depreciation 3,841      
Seniors Housing Operating | Naperville, IL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,540      
Initial Cost of Building & Improvements 28,204      
Cost Capitalized Subsequent to Acquisition 1,435      
Carrying Amount of Land 1,593      
Carrying Amount of Building and Improvements 29,586      
Accumulated Depreciation 7,300      
Seniors Housing Operating | Naples, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 55,188      
Initial Cost of Land 8,989      
Initial Cost of Building & Improvements 119,398      
Cost Capitalized Subsequent to Acquisition 7,188      
Carrying Amount of Land 9,088      
Carrying Amount of Building and Improvements 126,487      
Accumulated Depreciation 25,666      
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 3,900      
Initial Cost of Building & Improvements 35,788      
Cost Capitalized Subsequent to Acquisition 3,911      
Carrying Amount of Land 3,900      
Carrying Amount of Building and Improvements 39,699      
Accumulated Depreciation 11,568      
Seniors Housing Operating | Nepean, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 5,491      
Initial Cost of Land 1,575      
Initial Cost of Building & Improvements 5,770      
Cost Capitalized Subsequent to Acquisition 1,110      
Carrying Amount of Land 1,697      
Carrying Amount of Building and Improvements 6,758      
Accumulated Depreciation 1,716      
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 1,200      
Initial Cost of Building & Improvements 19,800      
Cost Capitalized Subsequent to Acquisition 10,408      
Carrying Amount of Land 2,729      
Carrying Amount of Building and Improvements 28,679      
Accumulated Depreciation 5,682      
Seniors Housing Operating | Newbury, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,850      
Initial Cost of Building & Improvements 12,796      
Cost Capitalized Subsequent to Acquisition 1,498      
Carrying Amount of Land 3,065      
Carrying Amount of Building and Improvements 14,079      
Accumulated Depreciation 1,239      
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 4,071      
Initial Cost of Building & Improvements 11,902      
Cost Capitalized Subsequent to Acquisition 2,441      
Carrying Amount of Land 4,398      
Carrying Amount of Building and Improvements 14,016      
Accumulated Depreciation 2,596      
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 1,930      
Initial Cost of Building & Improvements 14,420      
Cost Capitalized Subsequent to Acquisition 1,149      
Carrying Amount of Land 1,953      
Carrying Amount of Building and Improvements 15,546      
Accumulated Depreciation 4,989      
Seniors Housing Operating | North Tonawanda, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,172      
Initial Cost of Building & Improvements 7,297      
Cost Capitalized Subsequent to Acquisition 600      
Carrying Amount of Land 1,172      
Carrying Amount of Building and Improvements 7,897      
Accumulated Depreciation 517      
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 2,880      
Initial Cost of Building & Improvements 18,059      
Cost Capitalized Subsequent to Acquisition 933      
Carrying Amount of Land 3,044      
Carrying Amount of Building and Improvements 18,828      
Accumulated Depreciation 4,067      
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 739      
Initial Cost of Building & Improvements 7,667      
Cost Capitalized Subsequent to Acquisition 448      
Carrying Amount of Land 739      
Carrying Amount of Building and Improvements 8,115      
Accumulated Depreciation 669      
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 1,250      
Initial Cost of Building & Improvements 40,383      
Cost Capitalized Subsequent to Acquisition 2,640      
Carrying Amount of Land 1,250      
Carrying Amount of Building and Improvements 43,023      
Accumulated Depreciation 10,749      
Seniors Housing Operating | Oakdale, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,865      
Initial Cost of Building & Improvements 11,925      
Cost Capitalized Subsequent to Acquisition 880      
Carrying Amount of Land 1,865      
Carrying Amount of Building and Improvements 12,805      
Accumulated Depreciation 724      
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 3,877      
Initial Cost of Building & Improvements 47,508      
Cost Capitalized Subsequent to Acquisition 3,465      
Carrying Amount of Land 4,114      
Carrying Amount of Building and Improvements 50,736      
Accumulated Depreciation 12,439      
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 2,250      
Initial Cost of Building & Improvements 37,576      
Cost Capitalized Subsequent to Acquisition 2,851      
Carrying Amount of Land 2,393      
Carrying Amount of Building and Improvements 40,284      
Accumulated Depreciation 9,511      
Seniors Housing Operating | Oakville, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 5,618      
Initial Cost of Land 1,252      
Initial Cost of Building & Improvements 7,382      
Cost Capitalized Subsequent to Acquisition 922      
Carrying Amount of Land 1,346      
Carrying Amount of Building and Improvements 8,210      
Accumulated Depreciation 2,113      
Seniors Housing Operating | Oakville, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 9,189      
Initial Cost of Land 2,134      
Initial Cost of Building & Improvements 29,963      
Cost Capitalized Subsequent to Acquisition 3,314      
Carrying Amount of Land 2,280      
Carrying Amount of Building and Improvements 33,131      
Accumulated Depreciation 8,518      
Seniors Housing Operating | Oakville, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 4,812      
Initial Cost of Land 1,271      
Initial Cost of Building & Improvements 13,754      
Cost Capitalized Subsequent to Acquisition 1,646      
Carrying Amount of Land 1,361      
Carrying Amount of Building and Improvements 15,310      
Accumulated Depreciation 3,474      
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 360      
Initial Cost of Building & Improvements 6,700      
Cost Capitalized Subsequent to Acquisition 936      
Carrying Amount of Land 360      
Carrying Amount of Building and Improvements 7,636      
Accumulated Depreciation 2,880      
Seniors Housing Operating | Okotoks, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 18,824      
Initial Cost of Land 714      
Initial Cost of Building & Improvements 20,943      
Cost Capitalized Subsequent to Acquisition 1,908      
Carrying Amount of Land 780      
Carrying Amount of Building and Improvements 22,785      
Accumulated Depreciation 4,375      
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 36,000      
Initial Cost of Land 8,021      
Initial Cost of Building & Improvements 65,234      
Cost Capitalized Subsequent to Acquisition 3,238      
Carrying Amount of Land 8,021      
Carrying Amount of Building and Improvements 68,472      
Accumulated Depreciation 0      
Seniors Housing Operating | Oshawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 6,698      
Initial Cost of Land 841      
Initial Cost of Building & Improvements 7,570      
Cost Capitalized Subsequent to Acquisition 985      
Carrying Amount of Land 957      
Carrying Amount of Building and Improvements 8,439      
Accumulated Depreciation 2,167      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 9,668      
Initial Cost of Land 1,341      
Initial Cost of Building & Improvements 15,425      
Cost Capitalized Subsequent to Acquisition 2,720      
Carrying Amount of Land 1,469      
Carrying Amount of Building and Improvements 18,017      
Accumulated Depreciation 2,719      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 18,152      
Initial Cost of Land 3,454      
Initial Cost of Building & Improvements 23,309      
Cost Capitalized Subsequent to Acquisition 3,181      
Carrying Amount of Land 3,760      
Carrying Amount of Building and Improvements 26,184      
Accumulated Depreciation 7,627      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 20,738      
Initial Cost of Land 4,256      
Initial Cost of Building & Improvements 39,141      
Cost Capitalized Subsequent to Acquisition 2,962      
Carrying Amount of Land 4,477      
Carrying Amount of Building and Improvements 41,882      
Accumulated Depreciation 7,129      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 7,212      
Initial Cost of Land 2,103      
Initial Cost of Building & Improvements 18,421      
Cost Capitalized Subsequent to Acquisition 4,969      
Carrying Amount of Land 2,294      
Carrying Amount of Building and Improvements 23,199      
Accumulated Depreciation 3,852      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 13,711      
Initial Cost of Land 2,963      
Initial Cost of Building & Improvements 26,424      
Cost Capitalized Subsequent to Acquisition 3,754      
Carrying Amount of Land 3,196      
Carrying Amount of Building and Improvements 29,945      
Accumulated Depreciation 4,611      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 10,377      
Initial Cost of Land 1,561      
Initial Cost of Building & Improvements 18,170      
Cost Capitalized Subsequent to Acquisition 2,828      
Carrying Amount of Land 1,751      
Carrying Amount of Building and Improvements 20,808      
Accumulated Depreciation 3,069      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 13,702      
Initial Cost of Land 3,663      
Initial Cost of Building & Improvements 30,633      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,663      
Carrying Amount of Building and Improvements 30,633      
Accumulated Depreciation 5,208      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 17,456      
Initial Cost of Land 3,411      
Initial Cost of Building & Improvements 28,335      
Cost Capitalized Subsequent to Acquisition 6,228      
Carrying Amount of Land 3,684      
Carrying Amount of Building and Improvements 34,290      
Accumulated Depreciation 6,357      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 2,809      
Initial Cost of Land 724      
Initial Cost of Building & Improvements 4,710      
Cost Capitalized Subsequent to Acquisition 623      
Carrying Amount of Land 774      
Carrying Amount of Building and Improvements 5,283      
Accumulated Depreciation 1,375      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 2,044      
Initial Cost of Land 818      
Initial Cost of Building & Improvements 2,165      
Cost Capitalized Subsequent to Acquisition 1,484      
Carrying Amount of Land 727      
Carrying Amount of Building and Improvements 3,740      
Accumulated Depreciation 1,040      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 9,559      
Initial Cost of Land 2,809      
Initial Cost of Building & Improvements 27,299      
Cost Capitalized Subsequent to Acquisition 3,021      
Carrying Amount of Land 3,020      
Carrying Amount of Building and Improvements 30,109      
Accumulated Depreciation 8,289      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 4,517      
Initial Cost of Land 1,156      
Initial Cost of Building & Improvements 9,758      
Cost Capitalized Subsequent to Acquisition 1,129      
Carrying Amount of Land 1,290      
Carrying Amount of Building and Improvements 10,753      
Accumulated Depreciation 2,564      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 5,876      
Initial Cost of Land 746      
Initial Cost of Building & Improvements 7,800      
Cost Capitalized Subsequent to Acquisition 1,142      
Carrying Amount of Land 803      
Carrying Amount of Building and Improvements 8,885      
Accumulated Depreciation 2,129      
Seniors Housing Operating | Ottawa, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 8,898      
Initial Cost of Land 1,176      
Initial Cost of Building & Improvements 12,764      
Cost Capitalized Subsequent to Acquisition 1,663      
Carrying Amount of Land 1,298      
Carrying Amount of Building and Improvements 14,305      
Accumulated Depreciation 2,340      
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 17,866      
Initial Cost of Land 6,746      
Initial Cost of Building & Improvements 45,981      
Cost Capitalized Subsequent to Acquisition 11,155      
Carrying Amount of Land 7,098      
Carrying Amount of Building and Improvements 56,784      
Accumulated Depreciation 6,385      
Seniors Housing Operating | Overland Park, KS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,540      
Initial Cost of Building & Improvements 16,269      
Cost Capitalized Subsequent to Acquisition 1,663      
Carrying Amount of Land 1,670      
Carrying Amount of Building and Improvements 17,802      
Accumulated Depreciation 3,918      
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 0      
Initial Cost of Building & Improvements 39,639      
Cost Capitalized Subsequent to Acquisition 3,072      
Carrying Amount of Land 24      
Carrying Amount of Building and Improvements 42,687      
Accumulated Depreciation 10,156      
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 2,840      
Initial Cost of Building & Improvements 35,728      
Cost Capitalized Subsequent to Acquisition 1,855      
Carrying Amount of Land 2,986      
Carrying Amount of Building and Improvements 37,437      
Accumulated Depreciation 8,755      
Seniors Housing Operating | Parkland, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 54,784      
Initial Cost of Land 4,880      
Initial Cost of Building & Improvements 111,481      
Cost Capitalized Subsequent to Acquisition 5,181      
Carrying Amount of Land 4,904      
Carrying Amount of Building and Improvements 116,638      
Accumulated Depreciation 23,531      
Seniors Housing Operating | Parma, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,533      
Initial Cost of Building & Improvements 9,185      
Cost Capitalized Subsequent to Acquisition 701      
Carrying Amount of Land 1,533      
Carrying Amount of Building and Improvements 9,886      
Accumulated Depreciation 631      
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 1,770      
Initial Cost of Building & Improvements 8,630      
Cost Capitalized Subsequent to Acquisition 1,379      
Carrying Amount of Land 1,770      
Carrying Amount of Building and Improvements 10,009      
Accumulated Depreciation 4,288      
Seniors Housing Operating | Peabody, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 5,892      
Initial Cost of Land 2,250      
Initial Cost of Building & Improvements 16,071      
Cost Capitalized Subsequent to Acquisition 1,250      
Carrying Amount of Land 2,380      
Carrying Amount of Building and Improvements 17,191      
Accumulated Depreciation 3,328      
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 870      
Initial Cost of Building & Improvements 6,716      
Cost Capitalized Subsequent to Acquisition 63      
Carrying Amount of Land 870      
Carrying Amount of Building and Improvements 6,779      
Accumulated Depreciation 1,218      
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 1,931      
Initial Cost of Building & Improvements 9,427      
Cost Capitalized Subsequent to Acquisition 1,082      
Carrying Amount of Land 2,000      
Carrying Amount of Building and Improvements 10,440      
Accumulated Depreciation 2,485      
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 1,380      
Initial Cost of Building & Improvements 27,620      
Cost Capitalized Subsequent to Acquisition 1,418      
Carrying Amount of Land 1,507      
Carrying Amount of Building and Improvements 28,911      
Accumulated Depreciation 6,386      
Seniors Housing Operating | Peoria, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 766      
Initial Cost of Building & Improvements 21,796      
Cost Capitalized Subsequent to Acquisition 1,468      
Carrying Amount of Land 766      
Carrying Amount of Building and Improvements 23,264      
Accumulated Depreciation 2,628      
Seniors Housing Operating | Pittsburgh, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,580      
Initial Cost of Building & Improvements 18,017      
Cost Capitalized Subsequent to Acquisition 1,143      
Carrying Amount of Land 1,587      
Carrying Amount of Building and Improvements 19,153      
Accumulated Depreciation 5,010      
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 8,480      
Initial Cost of Building & Improvements 17,076      
Cost Capitalized Subsequent to Acquisition 5,896      
Carrying Amount of Land 8,513      
Carrying Amount of Building and Improvements 22,939      
Accumulated Depreciation 4,445      
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 3,066      
Initial Cost of Building & Improvements 19,901      
Cost Capitalized Subsequent to Acquisition 1,211      
Carrying Amount of Land 3,182      
Carrying Amount of Building and Improvements 20,996      
Accumulated Depreciation 4,693      
Seniors Housing Operating | Plano, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 28,960      
Initial Cost of Land 3,120      
Initial Cost of Building & Improvements 59,950      
Cost Capitalized Subsequent to Acquisition 3,806      
Carrying Amount of Land 3,227      
Carrying Amount of Building and Improvements 63,649      
Accumulated Depreciation 18,286      
Seniors Housing Operating | Plano, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,750      
Initial Cost of Building & Improvements 15,390      
Cost Capitalized Subsequent to Acquisition 1,505      
Carrying Amount of Land 1,750      
Carrying Amount of Building and Improvements 16,895      
Accumulated Depreciation 1,660      
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 1,580      
Initial Cost of Building & Improvements 40,531      
Cost Capitalized Subsequent to Acquisition 3,084      
Carrying Amount of Land 1,605      
Carrying Amount of Building and Improvements 43,590      
Accumulated Depreciation 10,040      
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 0      
Initial Cost of Building & Improvements 0      
Cost Capitalized Subsequent to Acquisition 52,166      
Carrying Amount of Land 3,676      
Carrying Amount of Building and Improvements 48,490      
Accumulated Depreciation 1,289      
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 12,123      
Initial Cost of Land 3,685      
Initial Cost of Building & Improvements 26,788      
Cost Capitalized Subsequent to Acquisition 4,160      
Carrying Amount of Land 3,932      
Carrying Amount of Building and Improvements 30,701      
Accumulated Depreciation 4,569      
Seniors Housing Operating | Port St. Lucie, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 8,700      
Initial Cost of Building & Improvements 47,230      
Cost Capitalized Subsequent to Acquisition 20,937      
Carrying Amount of Land 8,700      
Carrying Amount of Building and Improvements 68,167      
Accumulated Depreciation 19,243      
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 42,000      
Initial Cost of Land 2,857      
Initial Cost of Building & Improvements 59,848      
Cost Capitalized Subsequent to Acquisition 2,569      
Carrying Amount of Land 2,857      
Carrying Amount of Building and Improvements 62,417      
Accumulated Depreciation 3,653      
Seniors Housing Operating | Princeton, NJ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,730      
Initial Cost of Building & Improvements 30,888      
Cost Capitalized Subsequent to Acquisition 2,236      
Carrying Amount of Land 1,814      
Carrying Amount of Building and Improvements 33,040      
Accumulated Depreciation 7,486      
Seniors Housing Operating | Purley, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 7,365      
Initial Cost of Building & Improvements 35,161      
Cost Capitalized Subsequent to Acquisition 4,079      
Carrying Amount of Land 7,982      
Carrying Amount of Building and Improvements 38,623      
Accumulated Depreciation 10,333      
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 1,150      
Initial Cost of Building & Improvements 20,776      
Cost Capitalized Subsequent to Acquisition 1,494      
Carrying Amount of Land 1,156      
Carrying Amount of Building and Improvements 22,264      
Accumulated Depreciation 6,346      
Seniors Housing Operating | Quebec City, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 8,325      
Initial Cost of Land 2,420      
Initial Cost of Building & Improvements 21,977      
Cost Capitalized Subsequent to Acquisition 3,662      
Carrying Amount of Land 2,546      
Carrying Amount of Building and Improvements 25,513      
Accumulated Depreciation 2,956      
Seniors Housing Operating | Quebec City, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 12,294      
Initial Cost of Land 3,300      
Initial Cost of Building & Improvements 28,325      
Cost Capitalized Subsequent to Acquisition 5,172      
Carrying Amount of Land 3,472      
Carrying Amount of Building and Improvements 33,325      
Accumulated Depreciation 3,740      
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 1,260      
Initial Cost of Building & Improvements 21,744      
Cost Capitalized Subsequent to Acquisition 577      
Carrying Amount of Land 1,273      
Carrying Amount of Building and Improvements 22,308      
Accumulated Depreciation 3,213      
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 1,480      
Initial Cost of Building & Improvements 10,055      
Cost Capitalized Subsequent to Acquisition 2,144      
Carrying Amount of Land 2,084      
Carrying Amount of Building and Improvements 11,595      
Accumulated Depreciation 3,388      
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 5,450      
Initial Cost of Building & Improvements 60,034      
Cost Capitalized Subsequent to Acquisition 3,646      
Carrying Amount of Land 5,450      
Carrying Amount of Building and Improvements 63,680      
Accumulated Depreciation 16,003      
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 1,540      
Initial Cost of Building & Improvements 46,934      
Cost Capitalized Subsequent to Acquisition 2,370      
Carrying Amount of Land 1,718      
Carrying Amount of Building and Improvements 49,126      
Accumulated Depreciation 11,141      
Seniors Housing Operating | Red Deer, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 12,551      
Initial Cost of Land 1,247      
Initial Cost of Building & Improvements 19,283      
Cost Capitalized Subsequent to Acquisition 2,099      
Carrying Amount of Land 1,339      
Carrying Amount of Building and Improvements 21,290      
Accumulated Depreciation 3,727      
Seniors Housing Operating | Red Deer, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 14,770      
Initial Cost of Land 1,199      
Initial Cost of Building & Improvements 22,339      
Cost Capitalized Subsequent to Acquisition 2,201      
Carrying Amount of Land 1,282      
Carrying Amount of Building and Improvements 24,457      
Accumulated Depreciation 4,460      
Seniors Housing Operating | Redding, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 26,887      
Initial Cost of Land 4,474      
Initial Cost of Building & Improvements 36,857      
Cost Capitalized Subsequent to Acquisition 2,161      
Carrying Amount of Land 4,474      
Carrying Amount of Building and Improvements 39,018      
Accumulated Depreciation 0      
Seniors Housing Operating | Regina, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 6,218      
Initial Cost of Land 1,485      
Initial Cost of Building & Improvements 21,148      
Cost Capitalized Subsequent to Acquisition 2,096      
Carrying Amount of Land 1,678      
Carrying Amount of Building and Improvements 23,051      
Accumulated Depreciation 6,144      
Seniors Housing Operating | Regina, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 6,204      
Initial Cost of Land 1,244      
Initial Cost of Building & Improvements 21,036      
Cost Capitalized Subsequent to Acquisition 1,989      
Carrying Amount of Land 1,333      
Carrying Amount of Building and Improvements 22,936      
Accumulated Depreciation 5,411      
Seniors Housing Operating | Regina, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 15,477      
Initial Cost of Land 1,539      
Initial Cost of Building & Improvements 24,053      
Cost Capitalized Subsequent to Acquisition 4,685      
Carrying Amount of Land 1,663      
Carrying Amount of Building and Improvements 28,614      
Accumulated Depreciation 4,673      
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 960      
Initial Cost of Building & Improvements 24,248      
Cost Capitalized Subsequent to Acquisition 9,200      
Carrying Amount of Land 993      
Carrying Amount of Building and Improvements 33,415      
Accumulated Depreciation 6,994      
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 1,060      
Initial Cost of Building & Improvements 11,440      
Cost Capitalized Subsequent to Acquisition 930      
Carrying Amount of Land 1,060      
Carrying Amount of Building and Improvements 12,370      
Accumulated Depreciation 4,762      
Seniors Housing Operating | Ridgeland, MS        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 520      
Initial Cost of Building & Improvements 7,675      
Cost Capitalized Subsequent to Acquisition 901      
Carrying Amount of Land 520      
Carrying Amount of Building and Improvements 8,576      
Accumulated Depreciation 3,384      
Seniors Housing Operating | Riviere-du-Loup, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 2,854      
Initial Cost of Land 592      
Initial Cost of Building & Improvements 7,601      
Cost Capitalized Subsequent to Acquisition 1,820      
Carrying Amount of Land 665      
Carrying Amount of Building and Improvements 9,348      
Accumulated Depreciation 1,574      
Seniors Housing Operating | Riviere-du-Loup, QC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 12,164      
Initial Cost of Land 1,454      
Initial Cost of Building & Improvements 16,848      
Cost Capitalized Subsequent to Acquisition 5,339      
Carrying Amount of Land 1,812      
Carrying Amount of Building and Improvements 21,829      
Accumulated Depreciation 4,316      
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 1,090      
Initial Cost of Building & Improvements 6,710      
Cost Capitalized Subsequent to Acquisition 1,752      
Carrying Amount of Land 1,090      
Carrying Amount of Building and Improvements 8,462      
Accumulated Depreciation 3,291      
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 6,500      
Initial Cost of Building & Improvements 18,700      
Cost Capitalized Subsequent to Acquisition 3,756      
Carrying Amount of Land 6,546      
Carrying Amount of Building and Improvements 22,410      
Accumulated Depreciation 8,277      
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 854      
Initial Cost of Building & Improvements 12,646      
Cost Capitalized Subsequent to Acquisition 61,722      
Carrying Amount of Land 6,197      
Carrying Amount of Building and Improvements 69,025      
Accumulated Depreciation 18,583      
Seniors Housing Operating | Roseville, MN        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,540      
Initial Cost of Building & Improvements 35,877      
Cost Capitalized Subsequent to Acquisition 1,252      
Carrying Amount of Land 1,628      
Carrying Amount of Building and Improvements 37,041      
Accumulated Depreciation 8,190      
Seniors Housing Operating | Roseville, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,300      
Initial Cost of Building & Improvements 41,652      
Cost Capitalized Subsequent to Acquisition 6,832      
Carrying Amount of Land 3,300      
Carrying Amount of Building and Improvements 48,484      
Accumulated Depreciation 7,624      
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 1,107      
Initial Cost of Building & Improvements 9,627      
Cost Capitalized Subsequent to Acquisition 1,876      
Carrying Amount of Land 1,114      
Carrying Amount of Building and Improvements 11,496      
Accumulated Depreciation 8,369      
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 2,080      
Initial Cost of Building & Improvements 6,486      
Cost Capitalized Subsequent to Acquisition 1,686      
Carrying Amount of Land 2,380      
Carrying Amount of Building and Improvements 7,872      
Accumulated Depreciation 1,913      
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 0      
Initial Cost of Building & Improvements 0      
Cost Capitalized Subsequent to Acquisition 47,090      
Carrying Amount of Land 3,726      
Carrying Amount of Building and Improvements 43,364      
Accumulated Depreciation 1,047      
Seniors Housing Operating | Sacramento, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 940      
Initial Cost of Building & Improvements 14,781      
Cost Capitalized Subsequent to Acquisition 612      
Carrying Amount of Land 952      
Carrying Amount of Building and Improvements 15,381      
Accumulated Depreciation 4,492      
Seniors Housing Operating | Sacramento, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,300      
Initial Cost of Building & Improvements 23,394      
Cost Capitalized Subsequent to Acquisition 1,556      
Carrying Amount of Land 1,369      
Carrying Amount of Building and Improvements 24,881      
Accumulated Depreciation 5,802      
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 34,002      
Initial Cost of Land 10,259      
Initial Cost of Building & Improvements 61,903      
Cost Capitalized Subsequent to Acquisition 3,868      
Carrying Amount of Land 11,054      
Carrying Amount of Building and Improvements 64,976      
Accumulated Depreciation 15,584      
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 5,110      
Initial Cost of Building & Improvements 41,424      
Cost Capitalized Subsequent to Acquisition 9,387      
Carrying Amount of Land 5,150      
Carrying Amount of Building and Improvements 50,771      
Accumulated Depreciation 8,906      
Seniors Housing Operating | Salisbury, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,720      
Initial Cost of Building & Improvements 15,269      
Cost Capitalized Subsequent to Acquisition 1,676      
Carrying Amount of Land 2,926      
Carrying Amount of Building and Improvements 16,739      
Accumulated Depreciation 2,579      
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 1,360      
Initial Cost of Building & Improvements 19,691      
Cost Capitalized Subsequent to Acquisition 779      
Carrying Amount of Land 1,360      
Carrying Amount of Building and Improvements 20,470      
Accumulated Depreciation 6,592      
Seniors Housing Operating | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 6,120      
Initial Cost of Building & Improvements 28,169      
Cost Capitalized Subsequent to Acquisition 2,630      
Carrying Amount of Land 6,120      
Carrying Amount of Building and Improvements 30,799      
Accumulated Depreciation 6,947      
Seniors Housing Operating | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,045      
Initial Cost of Building & Improvements 58,048      
Cost Capitalized Subsequent to Acquisition 3,253      
Carrying Amount of Land 5,045      
Carrying Amount of Building and Improvements 61,301      
Accumulated Depreciation 5,962      
Seniors Housing Operating | San Antonio, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 11,683      
Initial Cost of Building & Improvements 69,623      
Cost Capitalized Subsequent to Acquisition 3,634      
Carrying Amount of Land 11,683      
Carrying Amount of Building and Improvements 73,257      
Accumulated Depreciation 2,722      
Seniors Housing Operating | San Diego, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,810      
Initial Cost of Building & Improvements 63,078      
Cost Capitalized Subsequent to Acquisition 3,968      
Carrying Amount of Land 5,810      
Carrying Amount of Building and Improvements 67,046      
Accumulated Depreciation 18,976      
Seniors Housing Operating | San Diego, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,000      
Initial Cost of Building & Improvements 27,164      
Cost Capitalized Subsequent to Acquisition 1,521      
Carrying Amount of Land 3,016      
Carrying Amount of Building and Improvements 28,669      
Accumulated Depreciation 6,231      
Seniors Housing Operating | San Diego, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 29,843      
Initial Cost of Land 4,179      
Initial Cost of Building & Improvements 40,639      
Cost Capitalized Subsequent to Acquisition 1,920      
Carrying Amount of Land 4,179      
Carrying Amount of Building and Improvements 42,559      
Accumulated Depreciation 0      
Seniors Housing Operating | San Francisco, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,920      
Initial Cost of Building & Improvements 91,639      
Cost Capitalized Subsequent to Acquisition 13,564      
Carrying Amount of Land 5,920      
Carrying Amount of Building and Improvements 105,203      
Accumulated Depreciation 17,446      
Seniors Housing Operating | San Francisco, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 11,800      
Initial Cost of Building & Improvements 77,214      
Cost Capitalized Subsequent to Acquisition 10,401      
Carrying Amount of Land 11,800      
Carrying Amount of Building and Improvements 87,615      
Accumulated Depreciation 14,542      
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 3,120      
Initial Cost of Building & Improvements 15,566      
Cost Capitalized Subsequent to Acquisition 1,135      
Carrying Amount of Land 3,165      
Carrying Amount of Building and Improvements 16,656      
Accumulated Depreciation 4,208      
Seniors Housing Operating | San Jose, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,280      
Initial Cost of Building & Improvements 46,823      
Cost Capitalized Subsequent to Acquisition 3,925      
Carrying Amount of Land 3,280      
Carrying Amount of Building and Improvements 50,748      
Accumulated Depreciation 12,727      
Seniors Housing Operating | San Jose, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 11,900      
Initial Cost of Building & Improvements 27,647      
Cost Capitalized Subsequent to Acquisition 5,198      
Carrying Amount of Land 11,966      
Carrying Amount of Building and Improvements 32,779      
Accumulated Depreciation 5,773      
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 1,620      
Initial Cost of Building & Improvements 27,392      
Cost Capitalized Subsequent to Acquisition 3,964      
Carrying Amount of Land 1,854      
Carrying Amount of Building and Improvements 31,122      
Accumulated Depreciation 4,342      
Seniors Housing Operating | San Ramon, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 8,700      
Initial Cost of Building & Improvements 72,223      
Cost Capitalized Subsequent to Acquisition 9,954      
Carrying Amount of Land 8,716      
Carrying Amount of Building and Improvements 82,161      
Accumulated Depreciation 13,500      
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 2,214      
Initial Cost of Building & Improvements 8,360      
Cost Capitalized Subsequent to Acquisition 1,454      
Carrying Amount of Land 2,220      
Carrying Amount of Building and Improvements 9,808      
Accumulated Depreciation 3,133      
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 5,250      
Initial Cost of Building & Improvements 28,340      
Cost Capitalized Subsequent to Acquisition 1,091      
Carrying Amount of Land 5,266      
Carrying Amount of Building and Improvements 29,415      
Accumulated Depreciation 6,912      
Seniors Housing Operating | Santa Rosa, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,250      
Initial Cost of Building & Improvements 26,273      
Cost Capitalized Subsequent to Acquisition 3,525      
Carrying Amount of Land 2,292      
Carrying Amount of Building and Improvements 29,756      
Accumulated Depreciation 4,508      
Seniors Housing Operating | Saskatoon, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 3,836      
Initial Cost of Land 981      
Initial Cost of Building & Improvements 13,905      
Cost Capitalized Subsequent to Acquisition 1,407      
Carrying Amount of Land 1,047      
Carrying Amount of Building and Improvements 15,246      
Accumulated Depreciation 3,431      
Seniors Housing Operating | Saskatoon, SK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 13,372      
Initial Cost of Land 1,382      
Initial Cost of Building & Improvements 17,609      
Cost Capitalized Subsequent to Acquisition 1,763      
Carrying Amount of Land 1,476      
Carrying Amount of Building and Improvements 19,278      
Accumulated Depreciation 4,307      
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 2,460      
Initial Cost of Building & Improvements 22,863      
Cost Capitalized Subsequent to Acquisition 1,277      
Carrying Amount of Land 2,497      
Carrying Amount of Building and Improvements 24,103      
Accumulated Depreciation 6,501      
Seniors Housing Operating | Scottsdale, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,500      
Initial Cost of Building & Improvements 3,890      
Cost Capitalized Subsequent to Acquisition 1,476      
Carrying Amount of Land 2,500      
Carrying Amount of Building and Improvements 5,366      
Accumulated Depreciation 1,458      
Seniors Housing Operating | Scranton, PA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 875      
Initial Cost of Building & Improvements 10,504      
Cost Capitalized Subsequent to Acquisition 695      
Carrying Amount of Land 875      
Carrying Amount of Building and Improvements 11,199      
Accumulated Depreciation 666      
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 6,204      
Initial Cost of Building & Improvements 72,954      
Cost Capitalized Subsequent to Acquisition 2,876      
Carrying Amount of Land 6,271      
Carrying Amount of Building and Improvements 75,763      
Accumulated Depreciation 21,133      
Seniors Housing Operating | Seattle, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,190      
Initial Cost of Building & Improvements 9,350      
Cost Capitalized Subsequent to Acquisition 1,726      
Carrying Amount of Land 5,199      
Carrying Amount of Building and Improvements 11,067      
Accumulated Depreciation 3,888      
Seniors Housing Operating | Seattle, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 27,180      
Initial Cost of Land 10,670      
Initial Cost of Building & Improvements 37,291      
Cost Capitalized Subsequent to Acquisition 1,618      
Carrying Amount of Land 10,700      
Carrying Amount of Building and Improvements 38,879      
Accumulated Depreciation 13,281      
Seniors Housing Operating | Seattle, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,150      
Initial Cost of Building & Improvements 19,887      
Cost Capitalized Subsequent to Acquisition 2,737      
Carrying Amount of Land 1,153      
Carrying Amount of Building and Improvements 22,621      
Accumulated Depreciation 3,336      
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 750      
Initial Cost of Building & Improvements 25,912      
Cost Capitalized Subsequent to Acquisition 867      
Carrying Amount of Land 769      
Carrying Amount of Building and Improvements 26,760      
Accumulated Depreciation 6,298      
Seniors Housing Operating | Sevenoaks, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 6,181      
Initial Cost of Building & Improvements 40,240      
Cost Capitalized Subsequent to Acquisition 6,340      
Carrying Amount of Land 6,648      
Carrying Amount of Building and Improvements 46,113      
Accumulated Depreciation 12,282      
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 0      
Initial Cost of Building & Improvements 67,623      
Cost Capitalized Subsequent to Acquisition 5,944      
Carrying Amount of Land 38      
Carrying Amount of Building and Improvements 73,529      
Accumulated Depreciation 10,854      
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 1,040      
Initial Cost of Building & Improvements 26,344      
Cost Capitalized Subsequent to Acquisition 1,438      
Carrying Amount of Land 1,110      
Carrying Amount of Building and Improvements 27,712      
Accumulated Depreciation 6,384      
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 2,120      
Initial Cost of Building & Improvements 38,116      
Cost Capitalized Subsequent to Acquisition 2,333      
Carrying Amount of Land 2,148      
Carrying Amount of Building and Improvements 40,421      
Accumulated Depreciation 9,371      
Seniors Housing Operating | Sidcup, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 7,446      
Initial Cost of Building & Improvements 56,570      
Cost Capitalized Subsequent to Acquisition 6,330      
Carrying Amount of Land 8,030      
Carrying Amount of Building and Improvements 62,316      
Accumulated Depreciation 17,441      
Seniors Housing Operating | Silver Spring, MD        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 0      
Initial Cost of Building & Improvements 0      
Cost Capitalized Subsequent to Acquisition 64,540      
Carrying Amount of Land 3,436      
Carrying Amount of Building and Improvements 61,104      
Accumulated Depreciation 1,466      
Seniors Housing Operating | Simi Valley, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,200      
Initial Cost of Building & Improvements 16,664      
Cost Capitalized Subsequent to Acquisition 1,889      
Carrying Amount of Land 3,298      
Carrying Amount of Building and Improvements 18,455      
Accumulated Depreciation 5,390      
Seniors Housing Operating | Simi Valley, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,510      
Initial Cost of Building & Improvements 51,406      
Cost Capitalized Subsequent to Acquisition 8,426      
Carrying Amount of Land 5,510      
Carrying Amount of Building and Improvements 59,832      
Accumulated Depreciation 10,275      
Seniors Housing Operating | Solihull, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,070      
Initial Cost of Building & Improvements 43,297      
Cost Capitalized Subsequent to Acquisition 6,660      
Carrying Amount of Land 5,453      
Carrying Amount of Building and Improvements 49,574      
Accumulated Depreciation 12,641      
Seniors Housing Operating | Solihull, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,571      
Initial Cost of Building & Improvements 26,053      
Cost Capitalized Subsequent to Acquisition 2,969      
Carrying Amount of Land 3,894      
Carrying Amount of Building and Improvements 28,699      
Accumulated Depreciation 7,375      
Seniors Housing Operating | Solihull, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,851      
Initial Cost of Building & Improvements 10,585      
Cost Capitalized Subsequent to Acquisition 1,421      
Carrying Amount of Land 1,990      
Carrying Amount of Building and Improvements 11,867      
Accumulated Depreciation 1,153      
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 5,644      
Initial Cost of Building & Improvements 42,155      
Cost Capitalized Subsequent to Acquisition 4,828      
Carrying Amount of Land 6,100      
Carrying Amount of Building and Improvements 46,527      
Accumulated Depreciation 11,020      
Seniors Housing Operating | Sonoma, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,100      
Initial Cost of Building & Improvements 18,400      
Cost Capitalized Subsequent to Acquisition 3,764      
Carrying Amount of Land 1,109      
Carrying Amount of Building and Improvements 22,155      
Accumulated Depreciation 7,932      
Seniors Housing Operating | Sonoma, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,820      
Initial Cost of Building & Improvements 21,890      
Cost Capitalized Subsequent to Acquisition 3,158      
Carrying Amount of Land 2,827      
Carrying Amount of Building and Improvements 25,041      
Accumulated Depreciation 3,787      
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 6,207      
Initial Cost of Building & Improvements 56,675      
Cost Capitalized Subsequent to Acquisition 7,624      
Carrying Amount of Land 6,207      
Carrying Amount of Building and Improvements 64,299      
Accumulated Depreciation 3,184      
Seniors Housing Operating | Spokane, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,200      
Initial Cost of Building & Improvements 25,064      
Cost Capitalized Subsequent to Acquisition 1,019      
Carrying Amount of Land 3,200      
Carrying Amount of Building and Improvements 26,083      
Accumulated Depreciation 7,538      
Seniors Housing Operating | Spokane, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,580      
Initial Cost of Building & Improvements 25,342      
Cost Capitalized Subsequent to Acquisition 382      
Carrying Amount of Land 2,580      
Carrying Amount of Building and Improvements 25,724      
Accumulated Depreciation 6,597      
Seniors Housing Operating | St. Albert, AB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 9,894      
Initial Cost of Land 1,145      
Initial Cost of Building & Improvements 17,863      
Cost Capitalized Subsequent to Acquisition 3,192      
Carrying Amount of Land 1,247      
Carrying Amount of Building and Improvements 20,953      
Accumulated Depreciation 5,779      
Seniors Housing Operating | St. John's, NL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 5,449      
Initial Cost of Land 706      
Initial Cost of Building & Improvements 11,765      
Cost Capitalized Subsequent to Acquisition 829      
Carrying Amount of Land 748      
Carrying Amount of Building and Improvements 12,552      
Accumulated Depreciation 2,009      
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 4,227      
Initial Cost of Land 1,175      
Initial Cost of Building & Improvements 17,397      
Cost Capitalized Subsequent to Acquisition 1,884      
Carrying Amount of Land 1,263      
Carrying Amount of Building and Improvements 19,193      
Accumulated Depreciation 4,306      
Seniors Housing Operating | Stockport, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,369      
Initial Cost of Building & Improvements 25,018      
Cost Capitalized Subsequent to Acquisition 2,864      
Carrying Amount of Land 4,720      
Carrying Amount of Building and Improvements 27,531      
Accumulated Depreciation 7,480      
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 2,280      
Initial Cost of Building & Improvements 5,983      
Cost Capitalized Subsequent to Acquisition 1,214      
Carrying Amount of Land 2,372      
Carrying Amount of Building and Improvements 7,105      
Accumulated Depreciation 2,223      
Seniors Housing Operating | Strongsville, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,113      
Initial Cost of Building & Improvements 10,882      
Cost Capitalized Subsequent to Acquisition 656      
Carrying Amount of Land 1,113      
Carrying Amount of Building and Improvements 11,538      
Accumulated Depreciation 651      
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 5,276      
Initial Cost of Building & Improvements 23,796      
Cost Capitalized Subsequent to Acquisition 730      
Carrying Amount of Land 5,276      
Carrying Amount of Building and Improvements 24,526      
Accumulated Depreciation 223      
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 4,006      
Initial Cost of Building & Improvements 25,307      
Cost Capitalized Subsequent to Acquisition 1,360      
Carrying Amount of Land 4,115      
Carrying Amount of Building and Improvements 26,558      
Accumulated Depreciation 7,094      
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 4,409      
Initial Cost of Building & Improvements 27,694      
Cost Capitalized Subsequent to Acquisition 2,392      
Carrying Amount of Land 4,409      
Carrying Amount of Building and Improvements 30,086      
Accumulated Depreciation 826      
Seniors Housing Operating | Sugar Land, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 960      
Initial Cost of Building & Improvements 31,423      
Cost Capitalized Subsequent to Acquisition 999      
Carrying Amount of Land 960      
Carrying Amount of Building and Improvements 32,422      
Accumulated Depreciation 8,673      
Seniors Housing Operating | Sugar Land, TX        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,272      
Initial Cost of Building & Improvements 60,493      
Cost Capitalized Subsequent to Acquisition 6,540      
Carrying Amount of Land 4,272      
Carrying Amount of Building and Improvements 67,033      
Accumulated Depreciation 8,760      
Seniors Housing Operating | Sun City, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 20,609      
Initial Cost of Land 6,521      
Initial Cost of Building & Improvements 48,476      
Cost Capitalized Subsequent to Acquisition 6,439      
Carrying Amount of Land 6,648      
Carrying Amount of Building and Improvements 54,788      
Accumulated Depreciation 13,348      
Seniors Housing Operating | Sun City, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 23,220      
Initial Cost of Land 5,040      
Initial Cost of Building & Improvements 50,923      
Cost Capitalized Subsequent to Acquisition 5,782      
Carrying Amount of Land 5,388      
Carrying Amount of Building and Improvements 56,357      
Accumulated Depreciation 12,170      
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 1,250      
Initial Cost of Building & Improvements 21,778      
Cost Capitalized Subsequent to Acquisition 1,162      
Carrying Amount of Land 1,250      
Carrying Amount of Building and Improvements 22,940      
Accumulated Depreciation 5,012      
Seniors Housing Operating | Sunnyvale, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 5,420      
Initial Cost of Building & Improvements 41,682      
Cost Capitalized Subsequent to Acquisition 2,715      
Carrying Amount of Land 5,420      
Carrying Amount of Building and Improvements 44,397      
Accumulated Depreciation 11,522      
Seniors Housing Operating | Spokane, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 6,316      
Initial Cost of Land 3,605      
Initial Cost of Building & Improvements 18,818      
Cost Capitalized Subsequent to Acquisition 2,466      
Carrying Amount of Land 3,849      
Carrying Amount of Building and Improvements 21,040      
Accumulated Depreciation 6,563      
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 15,386      
Initial Cost of Land 4,552      
Initial Cost of Building & Improvements 22,338      
Cost Capitalized Subsequent to Acquisition 2,939      
Carrying Amount of Land 4,905      
Carrying Amount of Building and Improvements 24,924      
Accumulated Depreciation 8,226      
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 4,096      
Initial Cost of Building & Improvements 14,532      
Cost Capitalized Subsequent to Acquisition 2,444      
Carrying Amount of Land 4,408      
Carrying Amount of Building and Improvements 16,664      
Accumulated Depreciation 1,396      
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 1,560      
Initial Cost of Building & Improvements 11,538      
Cost Capitalized Subsequent to Acquisition 1,531      
Carrying Amount of Land 1,560      
Carrying Amount of Building and Improvements 13,069      
Accumulated Depreciation 3,743      
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 4,145      
Initial Cost of Building & Improvements 15,508      
Cost Capitalized Subsequent to Acquisition 2,261      
Carrying Amount of Land 4,509      
Carrying Amount of Building and Improvements 17,405      
Accumulated Depreciation 3,692      
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 1,790      
Initial Cost of Land 492      
Initial Cost of Building & Improvements 10,119      
Cost Capitalized Subsequent to Acquisition 1,185      
Carrying Amount of Land 531      
Carrying Amount of Building and Improvements 11,265      
Accumulated Depreciation 2,713      
Seniors Housing Operating | Sylvania, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,205      
Initial Cost of Building & Improvements 12,024      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,205      
Carrying Amount of Building and Improvements 12,024      
Accumulated Depreciation 270      
Seniors Housing Operating | Syracuse, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,385      
Initial Cost of Building & Improvements 11,555      
Cost Capitalized Subsequent to Acquisition 863      
Carrying Amount of Land 1,385      
Carrying Amount of Building and Improvements 12,418      
Accumulated Depreciation 743      
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 4,170      
Initial Cost of Building & Improvements 73,377      
Cost Capitalized Subsequent to Acquisition 17,171      
Carrying Amount of Land 4,170      
Carrying Amount of Building and Improvements 90,548      
Accumulated Depreciation 17,187      
Seniors Housing Operating | Tampa, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 69,330      
Initial Cost of Land 4,910      
Initial Cost of Building & Improvements 114,148      
Cost Capitalized Subsequent to Acquisition 7,556      
Carrying Amount of Land 5,073      
Carrying Amount of Building and Improvements 121,541      
Accumulated Depreciation 23,400      
Seniors Housing Operating | Tampa, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,451      
Initial Cost of Building & Improvements 25,775      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,451      
Carrying Amount of Building and Improvements 25,775      
Accumulated Depreciation 65      
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 480      
Initial Cost of Building & Improvements 12,379      
Cost Capitalized Subsequent to Acquisition 557      
Carrying Amount of Land 480      
Carrying Amount of Building and Improvements 12,936      
Accumulated Depreciation 3,351      
Seniors Housing Operating | Toledo, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,040      
Initial Cost of Building & Improvements 47,129      
Cost Capitalized Subsequent to Acquisition 4,107      
Carrying Amount of Land 2,144      
Carrying Amount of Building and Improvements 51,132      
Accumulated Depreciation 16,567      
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 1,610      
Initial Cost of Building & Improvements 34,627      
Cost Capitalized Subsequent to Acquisition 1,428      
Carrying Amount of Land 1,695      
Carrying Amount of Building and Improvements 35,970      
Accumulated Depreciation 8,532      
Seniors Housing Operating | Tonawanda, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,534      
Initial Cost of Building & Improvements 13,264      
Cost Capitalized Subsequent to Acquisition 1,252      
Carrying Amount of Land 1,534      
Carrying Amount of Building and Improvements 14,516      
Accumulated Depreciation 820      
Seniors Housing Operating | Tonawanda, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,425      
Initial Cost of Building & Improvements 12,433      
Cost Capitalized Subsequent to Acquisition 1,428      
Carrying Amount of Land 2,425      
Carrying Amount of Building and Improvements 13,861      
Accumulated Depreciation 852      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 17,976      
Initial Cost of Land 2,927      
Initial Cost of Building & Improvements 20,713      
Cost Capitalized Subsequent to Acquisition 4,001      
Carrying Amount of Land 3,157      
Carrying Amount of Building and Improvements 24,484      
Accumulated Depreciation 4,292      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 8,049      
Initial Cost of Land 5,082      
Initial Cost of Building & Improvements 25,493      
Cost Capitalized Subsequent to Acquisition 3,119      
Carrying Amount of Land 5,448      
Carrying Amount of Building and Improvements 28,246      
Accumulated Depreciation 6,299      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 12,756      
Initial Cost of Land 2,008      
Initial Cost of Building & Improvements 19,620      
Cost Capitalized Subsequent to Acquisition 1,286      
Carrying Amount of Land 2,113      
Carrying Amount of Building and Improvements 20,801      
Accumulated Depreciation 3,744      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 36,974      
Initial Cost of Land 5,132      
Initial Cost of Building & Improvements 41,657      
Cost Capitalized Subsequent to Acquisition 5,581      
Carrying Amount of Land 5,484      
Carrying Amount of Building and Improvements 46,886      
Accumulated Depreciation 12,124      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 7,665      
Initial Cost of Land 2,480      
Initial Cost of Building & Improvements 7,571      
Cost Capitalized Subsequent to Acquisition 1,099      
Carrying Amount of Land 2,662      
Carrying Amount of Building and Improvements 8,488      
Accumulated Depreciation 2,084      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 4,701      
Initial Cost of Land 1,079      
Initial Cost of Building & Improvements 5,364      
Cost Capitalized Subsequent to Acquisition 731      
Carrying Amount of Land 1,152      
Carrying Amount of Building and Improvements 6,022      
Accumulated Depreciation 1,488      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 7,545      
Initial Cost of Land 2,513      
Initial Cost of Building & Improvements 19,695      
Cost Capitalized Subsequent to Acquisition 2,250      
Carrying Amount of Land 2,718      
Carrying Amount of Building and Improvements 21,740      
Accumulated Depreciation 4,677      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 17,746      
Initial Cost of Land 3,400      
Initial Cost of Building & Improvements 32,757      
Cost Capitalized Subsequent to Acquisition 3,552      
Carrying Amount of Land 3,635      
Carrying Amount of Building and Improvements 36,074      
Accumulated Depreciation 9,152      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 5,807      
Initial Cost of Land 1,447      
Initial Cost of Building & Improvements 3,918      
Cost Capitalized Subsequent to Acquisition 673      
Carrying Amount of Land 1,572      
Carrying Amount of Building and Improvements 4,466      
Accumulated Depreciation 1,361      
Seniors Housing Operating | Toronto, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 31,276      
Initial Cost of Land 5,304      
Initial Cost of Building & Improvements 53,488      
Cost Capitalized Subsequent to Acquisition 8,935      
Carrying Amount of Land 5,675      
Carrying Amount of Building and Improvements 62,052      
Accumulated Depreciation 17,963      
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 3,497      
Initial Cost of Building & Improvements 73,138      
Cost Capitalized Subsequent to Acquisition 186      
Carrying Amount of Land 3,497      
Carrying Amount of Building and Improvements 73,324      
Accumulated Depreciation 6,464      
Seniors Housing Operating | Tucson, AZ        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 830      
Initial Cost of Building & Improvements 6,179      
Cost Capitalized Subsequent to Acquisition 4,055      
Carrying Amount of Land 830      
Carrying Amount of Building and Improvements 10,234      
Accumulated Depreciation 2,031      
Seniors Housing Operating | Tulsa, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,330      
Initial Cost of Building & Improvements 21,285      
Cost Capitalized Subsequent to Acquisition 4,679      
Carrying Amount of Land 1,362      
Carrying Amount of Building and Improvements 25,932      
Accumulated Depreciation 8,192      
Seniors Housing Operating | Tulsa, OK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,500      
Initial Cost of Building & Improvements 20,861      
Cost Capitalized Subsequent to Acquisition 4,285      
Carrying Amount of Land 1,614      
Carrying Amount of Building and Improvements 25,032      
Accumulated Depreciation 8,129      
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 2,266      
Initial Cost of Building & Improvements 12,737      
Cost Capitalized Subsequent to Acquisition 1,122      
Carrying Amount of Land 2,266      
Carrying Amount of Building and Improvements 13,859      
Accumulated Depreciation 263      
Seniors Housing Operating | Twinsburg, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,035      
Initial Cost of Building & Improvements 8,302      
Cost Capitalized Subsequent to Acquisition 543      
Carrying Amount of Land 1,035      
Carrying Amount of Building and Improvements 8,845      
Accumulated Depreciation 569      
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 3,160      
Initial Cost of Building & Improvements 42,596      
Cost Capitalized Subsequent to Acquisition 68      
Carrying Amount of Land 3,160      
Carrying Amount of Building and Improvements 42,664      
Accumulated Depreciation 6,592      
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 1,900      
Initial Cost of Building & Improvements 28,195      
Cost Capitalized Subsequent to Acquisition 404      
Carrying Amount of Land 1,906      
Carrying Amount of Building and Improvements 28,593      
Accumulated Depreciation 3,475      
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 1,102      
Initial Cost of Building & Improvements 13,455      
Cost Capitalized Subsequent to Acquisition 1,623      
Carrying Amount of Land 1,153      
Carrying Amount of Building and Improvements 15,027      
Accumulated Depreciation 4,186      
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 900      
Initial Cost of Building & Improvements 17,100      
Cost Capitalized Subsequent to Acquisition 3,051      
Carrying Amount of Land 900      
Carrying Amount of Building and Improvements 20,151      
Accumulated Depreciation 7,599      
Seniors Housing Operating | Vallejo, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,000      
Initial Cost of Building & Improvements 18,000      
Cost Capitalized Subsequent to Acquisition 4,463      
Carrying Amount of Land 4,030      
Carrying Amount of Building and Improvements 22,433      
Accumulated Depreciation 8,210      
Seniors Housing Operating | Vallejo, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,330      
Initial Cost of Building & Improvements 15,407      
Cost Capitalized Subsequent to Acquisition 1,224      
Carrying Amount of Land 2,330      
Carrying Amount of Building and Improvements 16,631      
Accumulated Depreciation 4,928      
Seniors Housing Operating | Vancouver, WA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,820      
Initial Cost of Building & Improvements 19,042      
Cost Capitalized Subsequent to Acquisition 1,052      
Carrying Amount of Land 1,821      
Carrying Amount of Building and Improvements 20,093      
Accumulated Depreciation 5,810      
Seniors Housing Operating | Vancouver, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 7,282      
Initial Cost of Building & Improvements 6,572      
Cost Capitalized Subsequent to Acquisition 1,440      
Carrying Amount of Land 7,661      
Carrying Amount of Building and Improvements 7,633      
Accumulated Depreciation 5,714      
Seniors Housing Operating | Vankleek Hill, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 665      
Initial Cost of Land 389      
Initial Cost of Building & Improvements 2,960      
Cost Capitalized Subsequent to Acquisition 541      
Carrying Amount of Land 421      
Carrying Amount of Building and Improvements 3,469      
Accumulated Depreciation 960      
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 8,012      
Initial Cost of Land 1,852      
Initial Cost of Building & Improvements 14,214      
Cost Capitalized Subsequent to Acquisition 1,686      
Carrying Amount of Land 1,924      
Carrying Amount of Building and Improvements 15,828      
Accumulated Depreciation 2,837      
Seniors Housing Operating | Venice, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 64,425      
Initial Cost of Land 6,820      
Initial Cost of Building & Improvements 100,501      
Cost Capitalized Subsequent to Acquisition 5,560      
Carrying Amount of Land 6,958      
Carrying Amount of Building and Improvements 105,923      
Accumulated Depreciation 22,077      
Seniors Housing Operating | Vero Beach, FL        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,930      
Initial Cost of Building & Improvements 40,070      
Cost Capitalized Subsequent to Acquisition 25,748      
Carrying Amount of Land 2,930      
Carrying Amount of Building and Improvements 65,818      
Accumulated Depreciation 24,423      
Seniors Housing Operating | Victoria, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 6,877      
Initial Cost of Land 2,856      
Initial Cost of Building & Improvements 18,038      
Cost Capitalized Subsequent to Acquisition 1,833      
Carrying Amount of Land 3,049      
Carrying Amount of Building and Improvements 19,678      
Accumulated Depreciation 5,414      
Seniors Housing Operating | Victoria, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 6,340      
Initial Cost of Land 3,681      
Initial Cost of Building & Improvements 15,774      
Cost Capitalized Subsequent to Acquisition 1,700      
Carrying Amount of Land 3,931      
Carrying Amount of Building and Improvements 17,224      
Accumulated Depreciation 4,936      
Seniors Housing Operating | Victoria, BC        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 7,109      
Initial Cost of Land 2,476      
Initial Cost of Building & Improvements 15,379      
Cost Capitalized Subsequent to Acquisition 2,265      
Carrying Amount of Land 2,647      
Carrying Amount of Building and Improvements 17,473      
Accumulated Depreciation 2,713      
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 7,106      
Initial Cost of Building & Improvements 29,937      
Cost Capitalized Subsequent to Acquisition 7,580      
Carrying Amount of Land 5,856      
Carrying Amount of Building and Improvements 38,767      
Accumulated Depreciation 10,904      
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 3,700      
Initial Cost of Building & Improvements 24,312      
Cost Capitalized Subsequent to Acquisition 2,503      
Carrying Amount of Land 3,854      
Carrying Amount of Building and Improvements 26,661      
Accumulated Depreciation 4,867      
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 1,650      
Initial Cost of Building & Improvements 25,350      
Cost Capitalized Subsequent to Acquisition 2,985      
Carrying Amount of Land 1,694      
Carrying Amount of Building and Improvements 28,291      
Accumulated Depreciation 6,175      
Seniors Housing Operating | Walnut Creek, CA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 3,700      
Initial Cost of Building & Improvements 12,467      
Cost Capitalized Subsequent to Acquisition 2,931      
Carrying Amount of Land 3,808      
Carrying Amount of Building and Improvements 15,290      
Accumulated Depreciation 4,571      
Seniors Housing Operating | Twinsburg, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 10,320      
Initial Cost of Building & Improvements 100,890      
Cost Capitalized Subsequent to Acquisition 18,143      
Carrying Amount of Land 10,320      
Carrying Amount of Building and Improvements 119,033      
Accumulated Depreciation 20,636      
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 4,000      
Initial Cost of Building & Improvements 69,154      
Cost Capitalized Subsequent to Acquisition 3,222      
Carrying Amount of Land 4,004      
Carrying Amount of Building and Improvements 72,372      
Accumulated Depreciation 16,427      
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 1,920      
Initial Cost of Building & Improvements 24,880      
Cost Capitalized Subsequent to Acquisition 1,979      
Carrying Amount of Land 2,055      
Carrying Amount of Building and Improvements 26,724      
Accumulated Depreciation 5,918      
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 1,870      
Initial Cost of Building & Improvements 31,878      
Cost Capitalized Subsequent to Acquisition 790      
Carrying Amount of Land 1,870      
Carrying Amount of Building and Improvements 32,668      
Accumulated Depreciation 5,905      
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 1,207      
Initial Cost of Building & Improvements 27,462      
Cost Capitalized Subsequent to Acquisition 2,349      
Carrying Amount of Land 1,340      
Carrying Amount of Building and Improvements 29,678      
Accumulated Depreciation 7,435      
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 1,790      
Initial Cost of Building & Improvements 15,425      
Cost Capitalized Subsequent to Acquisition 2,637      
Carrying Amount of Land 1,801      
Carrying Amount of Building and Improvements 18,051      
Accumulated Depreciation 5,039      
Seniors Housing Operating | Welland, ON        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 6,027      
Initial Cost of Land 983      
Initial Cost of Building & Improvements 7,530      
Cost Capitalized Subsequent to Acquisition 793      
Carrying Amount of Land 1,019      
Carrying Amount of Building and Improvements 8,287      
Accumulated Depreciation 1,338      
Seniors Housing Operating | Wellesley, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 4,690      
Initial Cost of Building & Improvements 77,462      
Cost Capitalized Subsequent to Acquisition 347      
Carrying Amount of Land 4,690      
Carrying Amount of Building and Improvements 77,809      
Accumulated Depreciation 13,734      
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 3,960      
Initial Cost of Building & Improvements 47,085      
Cost Capitalized Subsequent to Acquisition 2,440      
Carrying Amount of Land 3,960      
Carrying Amount of Building and Improvements 49,525      
Accumulated Depreciation 11,042      
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 1,040      
Initial Cost of Building & Improvements 12,300      
Cost Capitalized Subsequent to Acquisition 905      
Carrying Amount of Land 1,100      
Carrying Amount of Building and Improvements 13,145      
Accumulated Depreciation 3,320      
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 2,600      
Initial Cost of Building & Improvements 7,521      
Cost Capitalized Subsequent to Acquisition 1,714      
Carrying Amount of Land 2,658      
Carrying Amount of Building and Improvements 9,177      
Accumulated Depreciation 2,957      
Seniors Housing Operating | West Seneca, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,232      
Initial Cost of Building & Improvements 6,600      
Cost Capitalized Subsequent to Acquisition 634      
Carrying Amount of Land 1,232      
Carrying Amount of Building and Improvements 7,234      
Accumulated Depreciation 546      
Seniors Housing Operating | West Seneca, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,035      
Initial Cost of Building & Improvements 7,438      
Cost Capitalized Subsequent to Acquisition 604      
Carrying Amount of Land 1,035      
Carrying Amount of Building and Improvements 8,042      
Accumulated Depreciation 546      
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 17,934      
Initial Cost of Land 7,059      
Initial Cost of Building & Improvements 28,155      
Cost Capitalized Subsequent to Acquisition 4,380      
Carrying Amount of Land 7,545      
Carrying Amount of Building and Improvements 32,049      
Accumulated Depreciation 8,354      
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 5,441      
Initial Cost of Building & Improvements 41,420      
Cost Capitalized Subsequent to Acquisition 8,236      
Carrying Amount of Land 5,854      
Carrying Amount of Building and Improvements 49,243      
Accumulated Depreciation 11,299      
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 1,440      
Initial Cost of Building & Improvements 32,607      
Cost Capitalized Subsequent to Acquisition 400      
Carrying Amount of Land 1,468      
Carrying Amount of Building and Improvements 32,979      
Accumulated Depreciation 5,100      
Seniors Housing Operating | Weston, MA        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,160      
Initial Cost of Building & Improvements 6,200      
Cost Capitalized Subsequent to Acquisition 1,555      
Carrying Amount of Land 1,160      
Carrying Amount of Building and Improvements 7,755      
Accumulated Depreciation 1,879      
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 2,060      
Initial Cost of Building & Improvements 31,296      
Cost Capitalized Subsequent to Acquisition 64      
Carrying Amount of Land 2,060      
Carrying Amount of Building and Improvements 31,360      
Accumulated Depreciation 4,169      
Seniors Housing Operating | Weybridge, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 7,899      
Initial Cost of Building & Improvements 48,240      
Cost Capitalized Subsequent to Acquisition 4,888      
Carrying Amount of Land 8,496      
Carrying Amount of Building and Improvements 52,531      
Accumulated Depreciation 14,169      
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 2,591      
Initial Cost of Building & Improvements 16,551      
Cost Capitalized Subsequent to Acquisition 1,841      
Carrying Amount of Land 2,824      
Carrying Amount of Building and Improvements 18,159      
Accumulated Depreciation 2,702      
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 2,304      
Initial Cost of Building & Improvements 24,768      
Cost Capitalized Subsequent to Acquisition 2,991      
Carrying Amount of Land 2,358      
Carrying Amount of Building and Improvements 27,705      
Accumulated Depreciation 6,232      
Seniors Housing Operating | Whitesboro, NY        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,575      
Initial Cost of Building & Improvements 11,873      
Cost Capitalized Subsequent to Acquisition 789      
Carrying Amount of Land 1,575      
Carrying Amount of Building and Improvements 12,662      
Accumulated Depreciation 737      
Seniors Housing Operating | Willoughby, OH        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 1,298      
Initial Cost of Building & Improvements 10,514      
Cost Capitalized Subsequent to Acquisition 662      
Carrying Amount of Land 1,298      
Carrying Amount of Building and Improvements 11,176      
Accumulated Depreciation 688      
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 1,040      
Initial Cost of Building & Improvements 23,338      
Cost Capitalized Subsequent to Acquisition 2,208      
Carrying Amount of Land 1,176      
Carrying Amount of Building and Improvements 25,410      
Accumulated Depreciation 5,951      
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 6,009      
Initial Cost of Building & Improvements 29,405      
Cost Capitalized Subsequent to Acquisition 3,178      
Carrying Amount of Land 6,471      
Carrying Amount of Building and Improvements 32,121      
Accumulated Depreciation 8,270      
Seniors Housing Operating | Winnipeg, MB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 11,736      
Initial Cost of Land 1,960      
Initial Cost of Building & Improvements 38,612      
Cost Capitalized Subsequent to Acquisition 4,839      
Carrying Amount of Land 2,206      
Carrying Amount of Building and Improvements 43,205      
Accumulated Depreciation 13,892      
Seniors Housing Operating | Winnipeg, MB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 25,459      
Initial Cost of Land 1,276      
Initial Cost of Building & Improvements 21,732      
Cost Capitalized Subsequent to Acquisition 2,563      
Carrying Amount of Land 1,493      
Carrying Amount of Building and Improvements 24,078      
Accumulated Depreciation 5,682      
Seniors Housing Operating | Winnipeg, MB        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 12,328      
Initial Cost of Land 1,317      
Initial Cost of Building & Improvements 15,609      
Cost Capitalized Subsequent to Acquisition 2,937      
Carrying Amount of Land 1,420      
Carrying Amount of Building and Improvements 18,443      
Accumulated Depreciation 3,740      
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 2,990      
Initial Cost of Building & Improvements 12,523      
Cost Capitalized Subsequent to Acquisition 1,032      
Carrying Amount of Land 3,118      
Carrying Amount of Building and Improvements 13,427      
Accumulated Depreciation 786      
Seniors Housing Operating | Wolverhampton, UK        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 2,941      
Initial Cost of Building & Improvements 8,922      
Cost Capitalized Subsequent to Acquisition 1,393      
Carrying Amount of Land 3,170      
Carrying Amount of Building and Improvements 10,086      
Accumulated Depreciation 3,591      
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 3,400      
Initial Cost of Building & Improvements 20,478      
Cost Capitalized Subsequent to Acquisition 1,383      
Carrying Amount of Land 3,447      
Carrying Amount of Building and Improvements 21,814      
Accumulated Depreciation 5,855      
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 3,962      
Initial Cost of Building & Improvements 50,107      
Cost Capitalized Subsequent to Acquisition 2,314      
Carrying Amount of Land 3,956      
Carrying Amount of Building and Improvements 52,427      
Accumulated Depreciation 12,283      
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 3,108      
Initial Cost of Land 463      
Initial Cost of Building & Improvements 8,760      
Cost Capitalized Subsequent to Acquisition 886      
Carrying Amount of Land 496      
Carrying Amount of Building and Improvements 9,613      
Accumulated Depreciation $ 2,348