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Real Estate and Accumulated Depreciation (Schedule III Real Estate and Accumulated Depreciation, Outpatient Medical) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 3,461,527      
Initial Cost of Land 2,507,281      
Initial Cost of Buildings & Improvements 25,667,979      
Cost Capitalized Subsequent to Acquisition 2,049,147      
Carrying Amount of Land 2,591,071      
Carrying Amount of Buildings and Improvements 27,449,987      
Accumulated Depreciation 4,093,494 [1] $ 3,796,297 $ 3,020,908 $ 2,386,658
Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 404,079      
Initial Cost of Land 505,698      
Initial Cost of Buildings & Improvements 4,548,662      
Cost Capitalized Subsequent to Acquisition 450,707      
Carrying Amount of Land 585,521      
Carrying Amount of Buildings and Improvements 4,919,550      
Accumulated Depreciation [1] 984,766      
Outpatient Medical [Member] | Akron, OH, 31350101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances 0      
Initial Cost of Land 821      
Initial Cost of Buildings & Improvements 12,105      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 821      
Carrying Amount of Buildings and Improvements 12,105      
Accumulated Depreciation [1] $ 2,050      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2010      
Outpatient Medical [Member] | Allen, TX, 31312101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 726      
Initial Cost of Buildings & Improvements 14,196      
Cost Capitalized Subsequent to Acquisition 412      
Carrying Amount of Land 726      
Carrying Amount of Buildings and Improvements 14,607      
Accumulated Depreciation [1] $ 3,626      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2006      
Outpatient Medical [Member] | Alpharetta, GA, 30100133 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 476      
Initial Cost of Buildings & Improvements 14,757      
Cost Capitalized Subsequent to Acquisition 31      
Carrying Amount of Land 476      
Carrying Amount of Buildings and Improvements 14,789      
Accumulated Depreciation [1] $ 3,798      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2003      
Outpatient Medical [Member] | Alpharetta, GA, 30100136 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,862      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,862      
Carrying Amount of Buildings and Improvements 0      
Accumulated Depreciation [1] $ 0      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 1900      
Outpatient Medical [Member] | Alpharetta, GA, 30100137 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 548      
Initial Cost of Buildings & Improvements 17,103      
Cost Capitalized Subsequent to Acquisition 205      
Carrying Amount of Land 548      
Carrying Amount of Buildings and Improvements 17,308      
Accumulated Depreciation [1] $ 5,331      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Alpharetta, GA, 31321101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 773      
Initial Cost of Buildings & Improvements 18,902      
Cost Capitalized Subsequent to Acquisition 522      
Carrying Amount of Land 773      
Carrying Amount of Buildings and Improvements 19,424      
Accumulated Depreciation [1] $ 4,755      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 1993      
Outpatient Medical [Member] | Alpharetta, GA, 31321102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,769      
Initial Cost of Buildings & Improvements 36,152      
Cost Capitalized Subsequent to Acquisition 594      
Carrying Amount of Land 1,769      
Carrying Amount of Buildings and Improvements 36,745      
Accumulated Depreciation [1] $ 10,190      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 1999      
Outpatient Medical [Member] | Arcadia, CA, 31157101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 5,408      
Initial Cost of Buildings & Improvements 23,219      
Cost Capitalized Subsequent to Acquisition 3,343      
Carrying Amount of Land 5,618      
Carrying Amount of Buildings and Improvements 26,352      
Accumulated Depreciation [1] $ 8,913      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1984      
Outpatient Medical [Member] | Arlington, TX, 30100148 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 82      
Initial Cost of Buildings & Improvements 18,243      
Cost Capitalized Subsequent to Acquisition 295      
Carrying Amount of Land 82      
Carrying Amount of Buildings and Improvements 18,537      
Accumulated Depreciation [1] $ 1,941      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2012      
Outpatient Medical [Member] | Atlanta, GA, 31108101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 4,931      
Initial Cost of Buildings & Improvements 18,720      
Cost Capitalized Subsequent to Acquisition 6,650      
Carrying Amount of Land 5,301      
Carrying Amount of Buildings and Improvements 25,000      
Accumulated Depreciation [1] $ 9,325      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1991      
Outpatient Medical [Member] | Atlanta, GA, 31327101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,947      
Initial Cost of Buildings & Improvements 24,248      
Cost Capitalized Subsequent to Acquisition 1,687      
Carrying Amount of Land 1,947      
Carrying Amount of Buildings and Improvements 25,934      
Accumulated Depreciation [1] $ 5,558      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 1984      
Outpatient Medical [Member] | Atlanta, GA, 31329101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 25,347      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 43,425      
Cost Capitalized Subsequent to Acquisition 611      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 44,036      
Accumulated Depreciation [1] $ 10,358      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2006      
Outpatient Medical [Member] | Bardstown, KY, 31463101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 1,928      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 8,238      
Carrying Amount of Land 274      
Carrying Amount of Buildings and Improvements 7,964      
Accumulated Depreciation [1] $ 561      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2006      
Outpatient Medical [Member] | Bartlett, TN, 31172101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 187      
Initial Cost of Buildings & Improvements 15,015      
Cost Capitalized Subsequent to Acquisition 1,889      
Carrying Amount of Land 187      
Carrying Amount of Buildings and Improvements 16,904      
Accumulated Depreciation [1] $ 5,734      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2004      
Outpatient Medical [Member] | Bel Air, MD, 31426101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 24,708      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 24,708      
Accumulated Depreciation [1] $ 464      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2016      
Outpatient Medical [Member] | Bellevue, NE, 31227101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 16,680      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 16,680      
Accumulated Depreciation [1] $ 4,032      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2010      
Outpatient Medical [Member] | Bettendorf, IA, 31394101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 7,110      
Cost Capitalized Subsequent to Acquisition 73      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 7,183      
Accumulated Depreciation [1] $ 389      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2014      
Outpatient Medical [Member] | Beverly Hills, CA, 31442101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 20,766      
Initial Cost of Buildings & Improvements 40,730      
Cost Capitalized Subsequent to Acquisition 124      
Carrying Amount of Land 20,766      
Carrying Amount of Buildings and Improvements 40,854      
Accumulated Depreciation [1] $ 2,755      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 1946      
Outpatient Medical [Member] | Beverly Hills, CA, 31443101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 18,863      
Initial Cost of Buildings & Improvements 1,192      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 18,863      
Carrying Amount of Buildings and Improvements 1,192      
Accumulated Depreciation [1] $ 332      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 1955      
Outpatient Medical [Member] | Beverly Hills, CA, 31444101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 19,863      
Initial Cost of Buildings & Improvements 31,690      
Cost Capitalized Subsequent to Acquisition 156      
Carrying Amount of Land 19,863      
Carrying Amount of Buildings and Improvements 31,846      
Accumulated Depreciation [1] $ 2,334      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 1946      
Outpatient Medical [Member] | Beverly Hills, CA, 31445101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 33,729      
Initial Cost of Land 32,603      
Initial Cost of Buildings & Improvements 28,639      
Cost Capitalized Subsequent to Acquisition 2      
Carrying Amount of Land 32,603      
Carrying Amount of Buildings and Improvements 28,642      
Accumulated Depreciation [1] $ 2,918      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 1950      
Outpatient Medical [Member] | Beverly Hills, CA, 31446101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 78,271      
Initial Cost of Land 52,772      
Initial Cost of Buildings & Improvements 87,192      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 52,772      
Carrying Amount of Buildings and Improvements 87,192      
Accumulated Depreciation [1] $ 5,720      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 1989      
Outpatient Medical [Member] | Birmingham, AL, 31165101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 52      
Initial Cost of Buildings & Improvements 10,201      
Cost Capitalized Subsequent to Acquisition 503      
Carrying Amount of Land 52      
Carrying Amount of Buildings and Improvements 10,704      
Accumulated Depreciation [1] $ 3,496      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1971      
Outpatient Medical [Member] | Birmingham, AL, 31165102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 124      
Initial Cost of Buildings & Improvements 11,733      
Cost Capitalized Subsequent to Acquisition 1,235      
Carrying Amount of Land 124      
Carrying Amount of Buildings and Improvements 12,967      
Accumulated Depreciation [1] $ 4,127      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1985      
Outpatient Medical [Member] | Birmingham, AL, 31165103 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 476      
Initial Cost of Buildings & Improvements 18,726      
Cost Capitalized Subsequent to Acquisition 1,881      
Carrying Amount of Land 476      
Carrying Amount of Buildings and Improvements 20,607      
Accumulated Depreciation [1] $ 6,776      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1989      
Outpatient Medical [Member] | Boardman, OH, 31274101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 80      
Initial Cost of Buildings & Improvements 12,161      
Cost Capitalized Subsequent to Acquisition 10      
Carrying Amount of Land 80      
Carrying Amount of Buildings and Improvements 12,170      
Accumulated Depreciation [1] $ 3,768      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Boca Raton, FL, 30100132 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 31      
Initial Cost of Buildings & Improvements 12,312      
Cost Capitalized Subsequent to Acquisition 88      
Carrying Amount of Land 50      
Carrying Amount of Buildings and Improvements 12,381      
Accumulated Depreciation [1] $ 2,548      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 1993      
Outpatient Medical [Member] | Boca Raton, FL, 31158101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 109      
Initial Cost of Buildings & Improvements 34,002      
Cost Capitalized Subsequent to Acquisition 2,588      
Carrying Amount of Land 214      
Carrying Amount of Buildings and Improvements 36,485      
Accumulated Depreciation [1] $ 12,111      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1995      
Outpatient Medical [Member] | Boerne, TX, 30100128 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 50      
Initial Cost of Buildings & Improvements 13,120      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 50      
Carrying Amount of Buildings and Improvements 13,120      
Accumulated Depreciation [1] $ 3,067      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Boynton Beach, FL, 31145101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,048      
Initial Cost of Buildings & Improvements 7,692      
Cost Capitalized Subsequent to Acquisition 588      
Carrying Amount of Land 2,048      
Carrying Amount of Buildings and Improvements 8,280      
Accumulated Depreciation [1] $ 3,253      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1995      
Outpatient Medical [Member] | Boynton Beach, FL, 31153101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,048      
Initial Cost of Buildings & Improvements 7,403      
Cost Capitalized Subsequent to Acquisition 1,261      
Carrying Amount of Land 2,048      
Carrying Amount of Buildings and Improvements 8,664      
Accumulated Depreciation [1] $ 3,324      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1997      
Outpatient Medical [Member] | Boynton Beach, FL, 31185101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 214      
Initial Cost of Buildings & Improvements 5,611      
Cost Capitalized Subsequent to Acquisition 8,279      
Carrying Amount of Land 270      
Carrying Amount of Buildings and Improvements 13,834      
Accumulated Depreciation [1] $ 4,708      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 1996      
Outpatient Medical [Member] | Boynton Beach, FL, 31380101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 25,399      
Initial Cost of Land 13,324      
Initial Cost of Buildings & Improvements 40,369      
Cost Capitalized Subsequent to Acquisition 2,175      
Carrying Amount of Land 13,963      
Carrying Amount of Buildings and Improvements 41,905      
Accumulated Depreciation [1] $ 7,314      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 1995      
Outpatient Medical [Member] | Bradenton, FL, 30100155 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,184      
Initial Cost of Buildings & Improvements 9,799      
Cost Capitalized Subsequent to Acquisition 30      
Carrying Amount of Land 1,184      
Carrying Amount of Buildings and Improvements 9,829      
Accumulated Depreciation [1] $ 1,037      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 1975      
Outpatient Medical [Member] | Bradenton, FL, 30100156 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,035      
Initial Cost of Buildings & Improvements 4,298      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,035      
Carrying Amount of Buildings and Improvements 4,298      
Accumulated Depreciation [1] $ 498      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2006      
Outpatient Medical [Member] | Bridgeton, MO, 31272101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 450      
Initial Cost of Buildings & Improvements 21,084      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 450      
Carrying Amount of Buildings and Improvements 21,084      
Accumulated Depreciation [1] $ 5,382      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2006      
Outpatient Medical [Member] | Buckhurst Hill, UKH, BKH Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 11,597      
Initial Cost of Buildings & Improvements 49,243      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 11,597      
Carrying Amount of Buildings and Improvements 49,243      
Accumulated Depreciation [1] $ 2,263      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Burleson, TX, 31299101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 10      
Initial Cost of Buildings & Improvements 12,611      
Cost Capitalized Subsequent to Acquisition 401      
Carrying Amount of Land 10      
Carrying Amount of Buildings and Improvements 13,012      
Accumulated Depreciation [1] $ 3,068      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Burnsville, MN, 31379101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 31,596      
Cost Capitalized Subsequent to Acquisition 391      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 31,987      
Accumulated Depreciation [1] $ 4,373      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2014      
Outpatient Medical [Member] | Carmel, IN, 31291101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,280      
Initial Cost of Buildings & Improvements 19,238      
Cost Capitalized Subsequent to Acquisition 425      
Carrying Amount of Land 2,280      
Carrying Amount of Buildings and Improvements 19,663      
Accumulated Depreciation [1] $ 6,292      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2005      
Outpatient Medical [Member] | Carmel, IN, 31292101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,026      
Initial Cost of Buildings & Improvements 21,559      
Cost Capitalized Subsequent to Acquisition 26      
Carrying Amount of Land 2,026      
Carrying Amount of Buildings and Improvements 21,586      
Accumulated Depreciation [1] $ 7,140      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Castle Rock, CO, 31382101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 80      
Initial Cost of Buildings & Improvements 13,004      
Cost Capitalized Subsequent to Acquisition 571      
Carrying Amount of Land 79      
Carrying Amount of Buildings and Improvements 13,576      
Accumulated Depreciation [1] $ 1,679      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Cedar Grove, WI, 31235102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 113      
Initial Cost of Buildings & Improvements 618      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 113      
Carrying Amount of Buildings and Improvements 618      
Accumulated Depreciation [1] $ 154      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1986      
Outpatient Medical [Member] | Charleston, SC, 30100157 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,773      
Initial Cost of Buildings & Improvements 25,928      
Cost Capitalized Subsequent to Acquisition 53      
Carrying Amount of Land 2,815      
Carrying Amount of Buildings and Improvements 25,939      
Accumulated Depreciation [1] $ 2,900      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Cincinnati, OH, 31357101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 17,880      
Cost Capitalized Subsequent to Acquisition 135      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 18,015      
Accumulated Depreciation [1] $ 2,151      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Claremore, OK, 31173101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 132      
Initial Cost of Buildings & Improvements 12,829      
Cost Capitalized Subsequent to Acquisition 811      
Carrying Amount of Land 132      
Carrying Amount of Buildings and Improvements 13,640      
Accumulated Depreciation [1] $ 4,900      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2005      
Outpatient Medical [Member] | Clarkson Valley, MO, 31219101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 35,592      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 35,592      
Accumulated Depreciation [1] $ 9,599      
Year Acquired Jan. 01, 2009      
Year Built Jan. 01, 2010      
Outpatient Medical [Member] | Clear Lake, TX, 30100149 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 13,882      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 13,882      
Accumulated Depreciation [1] $ 810      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2014      
Outpatient Medical [Member] | Columbia, MD, 30100146 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,333      
Initial Cost of Buildings & Improvements 19,232      
Cost Capitalized Subsequent to Acquisition 12      
Carrying Amount of Land 2,333      
Carrying Amount of Buildings and Improvements 19,243      
Accumulated Depreciation [1] $ 3,412      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2002      
Outpatient Medical [Member] | Columbia, MD, 30100186 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 23      
Initial Cost of Buildings & Improvements 33,885      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 23      
Carrying Amount of Buildings and Improvements 33,885      
Accumulated Depreciation [1] $ 1,039      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 1982      
Outpatient Medical [Member] | Coon Rapids, MN, 31371101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 26,679      
Cost Capitalized Subsequent to Acquisition 1,106      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 27,785      
Accumulated Depreciation [1] $ 3,124      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2014      
Outpatient Medical [Member] | Cypress, TX, 30100200 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,287      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,287      
Carrying Amount of Buildings and Improvements 0      
Accumulated Depreciation [1] $ 0      
Year Acquired Jan. 01, 2016      
Year Built Jan. 01, 1900      
Outpatient Medical [Member] | Cypress, TX, 30100203 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,985      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,985      
Carrying Amount of Buildings and Improvements 0      
Accumulated Depreciation [1] $ 0      
Year Acquired Jan. 01, 2016      
Year Built Jan. 01, 1900      
Outpatient Medical [Member] | Dade City, FL, 30100126 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,211      
Initial Cost of Buildings & Improvements 5,511      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,211      
Carrying Amount of Buildings and Improvements 5,511      
Accumulated Depreciation [1] $ 1,078      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 1998      
Outpatient Medical [Member] | Dallas, TX, 30100183 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 15,541      
Carrying Amount of Land 122      
Carrying Amount of Buildings and Improvements 15,419      
Accumulated Depreciation [1] $ 421      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2014      
Outpatient Medical [Member] | Dallas, TX, 31150101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 137      
Initial Cost of Buildings & Improvements 28,690      
Cost Capitalized Subsequent to Acquisition 3,395      
Carrying Amount of Land 137      
Carrying Amount of Buildings and Improvements 32,085      
Accumulated Depreciation [1] $ 11,242      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1995      
Outpatient Medical [Member] | Dallas, TX, 31313101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 462      
Initial Cost of Buildings & Improvements 52,488      
Cost Capitalized Subsequent to Acquisition 36      
Carrying Amount of Land 462      
Carrying Amount of Buildings and Improvements 52,524      
Accumulated Depreciation [1] $ 8,297      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2004      
Outpatient Medical [Member] | Dayton, OH, 31290101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 730      
Initial Cost of Buildings & Improvements 6,919      
Cost Capitalized Subsequent to Acquisition 85      
Carrying Amount of Land 730      
Carrying Amount of Buildings and Improvements 7,005      
Accumulated Depreciation [1] $ 2,165      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 1988      
Outpatient Medical [Member] | Deerfield Beach, FL, 31298101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,408      
Initial Cost of Buildings & Improvements 7,809      
Cost Capitalized Subsequent to Acquisition 137      
Carrying Amount of Land 2,540      
Carrying Amount of Buildings and Improvements 7,814      
Accumulated Depreciation [1] $ 2,872      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2001      
Outpatient Medical [Member] | Delray Beach, FL, 31133101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,882      
Initial Cost of Buildings & Improvements 34,767      
Cost Capitalized Subsequent to Acquisition 6,015      
Carrying Amount of Land 2,152      
Carrying Amount of Buildings and Improvements 40,512      
Accumulated Depreciation [1] $ 15,966      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1985      
Outpatient Medical [Member] | Durham, NC, 30100152 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,212      
Initial Cost of Buildings & Improvements 22,858      
Cost Capitalized Subsequent to Acquisition 1      
Carrying Amount of Land 1,212      
Carrying Amount of Buildings and Improvements 22,859      
Accumulated Depreciation [1] $ 2,375      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2012      
Outpatient Medical [Member] | Edina, MN, 31265101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 310      
Initial Cost of Buildings & Improvements 15,132      
Cost Capitalized Subsequent to Acquisition 263      
Carrying Amount of Land 310      
Carrying Amount of Buildings and Improvements 15,395      
Accumulated Depreciation [1] $ 3,791      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2003      
Outpatient Medical [Member] | El Paso, TX, 31148101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 677      
Initial Cost of Buildings & Improvements 17,075      
Cost Capitalized Subsequent to Acquisition 2,132      
Carrying Amount of Land 677      
Carrying Amount of Buildings and Improvements 19,208      
Accumulated Depreciation [1] $ 7,613      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1997      
Outpatient Medical [Member] | Everett, WA, 31248 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 4,842      
Initial Cost of Buildings & Improvements 26,010      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,842      
Carrying Amount of Buildings and Improvements 26,010      
Accumulated Depreciation [1] $ 5,637      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2011      
Outpatient Medical [Member] | Fenton, MO, 31387101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 11,258      
Initial Cost of Land 958      
Initial Cost of Buildings & Improvements 27,485      
Cost Capitalized Subsequent to Acquisition 329      
Carrying Amount of Land 958      
Carrying Amount of Buildings and Improvements 27,814      
Accumulated Depreciation [1] $ 4,826      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Fenton, MO, 31389101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 5,345      
Initial Cost of Land 369      
Initial Cost of Buildings & Improvements 13,911      
Cost Capitalized Subsequent to Acquisition 49      
Carrying Amount of Land 369      
Carrying Amount of Buildings and Improvements 13,961      
Accumulated Depreciation [1] $ 1,666      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Flower Mound, TX, 30100164 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 737      
Initial Cost of Buildings & Improvements 9,654      
Cost Capitalized Subsequent to Acquisition 71      
Carrying Amount of Land 737      
Carrying Amount of Buildings and Improvements 9,724      
Accumulated Depreciation [1] $ 807      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 2014      
Outpatient Medical [Member] | Flower Mound, TX, 30100165 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 4,164      
Initial Cost of Buildings & Improvements 27,529      
Cost Capitalized Subsequent to Acquisition 80      
Carrying Amount of Land 4,164      
Carrying Amount of Buildings and Improvements 27,609      
Accumulated Depreciation [1] $ 2,525      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2012      
Outpatient Medical [Member] | Flower Mound, TX, 30100166 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 4,620      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,620      
Carrying Amount of Buildings and Improvements 0      
Accumulated Depreciation [1] $ 0      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 1900      
Outpatient Medical [Member] | Fort Wayne, IN, 31340101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,105      
Initial Cost of Buildings & Improvements 22,836      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,105      
Carrying Amount of Buildings and Improvements 22,836      
Accumulated Depreciation [1] $ 3,707      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2004      
Outpatient Medical [Member] | Fort Worth, TX, 30100147 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 462      
Initial Cost of Buildings & Improvements 26,020      
Cost Capitalized Subsequent to Acquisition 218      
Carrying Amount of Land 462      
Carrying Amount of Buildings and Improvements 26,238      
Accumulated Depreciation [1] $ 2,785      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2012      
Outpatient Medical [Member] | Fort Worth, TX, 30100163 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 401      
Initial Cost of Buildings & Improvements 6,099      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 401      
Carrying Amount of Buildings and Improvements 6,099      
Accumulated Depreciation [1] $ 639      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Franklin, TN, 31189101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,338      
Initial Cost of Buildings & Improvements 12,138      
Cost Capitalized Subsequent to Acquisition 2,449      
Carrying Amount of Land 2,338      
Carrying Amount of Buildings and Improvements 14,587      
Accumulated Depreciation [1] $ 4,973      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 1988      
Outpatient Medical [Member] | Franklin, WI, 31232105 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 4,445      
Initial Cost of Land 6,872      
Initial Cost of Buildings & Improvements 7,550      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 6,872      
Carrying Amount of Buildings and Improvements 7,550      
Accumulated Depreciation [1] $ 1,976      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1984      
Outpatient Medical [Member] | Frisco, TX, 31176101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 18,635      
Cost Capitalized Subsequent to Acquisition 1,443      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 20,078      
Accumulated Depreciation [1] $ 6,460      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2004      
Outpatient Medical [Member] | Frisco, TX, 31177101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 15,309      
Cost Capitalized Subsequent to Acquisition 2,314      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 17,623      
Accumulated Depreciation [1] $ 6,401      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2004      
Outpatient Medical [Member] | Gallatin, TN, 31259101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 20      
Initial Cost of Buildings & Improvements 21,801      
Cost Capitalized Subsequent to Acquisition 533      
Carrying Amount of Land 20      
Carrying Amount of Buildings and Improvements 22,334      
Accumulated Depreciation [1] $ 6,053      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1997      
Outpatient Medical [Member] | Gig Harbor, WA, 31464101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 30,890      
Carrying Amount of Land 80      
Carrying Amount of Buildings and Improvements 30,810      
Accumulated Depreciation [1] $ 1,481      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Glendale, CA, 31178101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 37      
Initial Cost of Buildings & Improvements 18,398      
Cost Capitalized Subsequent to Acquisition 1,207      
Carrying Amount of Land 37      
Carrying Amount of Buildings and Improvements 19,605      
Accumulated Depreciation [1] $ 5,747      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2002      
Outpatient Medical [Member] | Grand Prairie, TX, 30100140 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 981      
Initial Cost of Buildings & Improvements 6,086      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 981      
Carrying Amount of Buildings and Improvements 6,086      
Accumulated Depreciation [1] $ 1,490      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Grapevine, TX, 31409101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 5,943      
Cost Capitalized Subsequent to Acquisition 4,778      
Carrying Amount of Land 2,081      
Carrying Amount of Buildings and Improvements 8,640      
Accumulated Depreciation [1] $ 802      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2002      
Outpatient Medical [Member] | Grapevine, TX, 31435101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,365      
Initial Cost of Buildings & Improvements 15,669      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,365      
Carrying Amount of Buildings and Improvements 15,669      
Accumulated Depreciation [1] $ 2,170      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2002      
Outpatient Medical [Member] | Green Bay, WI, 31233101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 6,053      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 14,891      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 14,891      
Accumulated Depreciation [1] $ 3,442      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2002      
Outpatient Medical [Member] | Green Bay, WI, 31238101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 20,098      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 20,098      
Accumulated Depreciation [1] $ 4,557      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2002      
Outpatient Medical [Member] | Green Bay, WI, 31239101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 11,696      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 11,696      
Accumulated Depreciation [1] $ 3,683      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2002      
Outpatient Medical [Member] | Greeneville, TN, 31269101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 970      
Initial Cost of Buildings & Improvements 10,104      
Cost Capitalized Subsequent to Acquisition 73      
Carrying Amount of Land 970      
Carrying Amount of Buildings and Improvements 10,178      
Accumulated Depreciation [1] $ 2,894      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2005      
Outpatient Medical [Member] | Greenwood, IN, 30100141 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 8,316      
Initial Cost of Buildings & Improvements 26,384      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 8,316      
Carrying Amount of Buildings and Improvements 26,384      
Accumulated Depreciation [1] $ 4,763      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2010      
Outpatient Medical [Member] | Greenwood, IN, 30100161 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,262      
Initial Cost of Buildings & Improvements 7,045      
Cost Capitalized Subsequent to Acquisition 645      
Carrying Amount of Land 1,262      
Carrying Amount of Buildings and Improvements 7,691      
Accumulated Depreciation [1] $ 863      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2010      
Outpatient Medical [Member] | Grenwood, IN, 30100160 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,098      
Initial Cost of Buildings & Improvements 21,538      
Cost Capitalized Subsequent to Acquisition 1      
Carrying Amount of Land 2,098      
Carrying Amount of Buildings and Improvements 21,538      
Accumulated Depreciation [1] $ 1,761      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Harker Heights, TX, 31335101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,907      
Initial Cost of Buildings & Improvements 3,575      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,907      
Carrying Amount of Buildings and Improvements 3,575      
Accumulated Depreciation [1] $ 387      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2012      
Outpatient Medical [Member] | High Point, NC, 10130144 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,659      
Initial Cost of Buildings & Improvements 29,069      
Cost Capitalized Subsequent to Acquisition 163      
Carrying Amount of Land 2,659      
Carrying Amount of Buildings and Improvements 29,232      
Accumulated Depreciation [1] $ 4,463      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2010      
Outpatient Medical [Member] | Highland, IL, 31347101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 8,834      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 8,834      
Accumulated Depreciation [1] $ 999      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Houston, TX, 30100135 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 10,403      
Carrying Amount of Land 10,403      
Carrying Amount of Buildings and Improvements 0      
Accumulated Depreciation [1] $ 3      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 1900      
Outpatient Medical [Member] | Houston, TX, 30100139 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 5,837      
Initial Cost of Buildings & Improvements 33,128      
Cost Capitalized Subsequent to Acquisition 9      
Carrying Amount of Land 5,837      
Carrying Amount of Buildings and Improvements 33,137      
Accumulated Depreciation [1] $ 8,093      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2005      
Outpatient Medical [Member] | Houston, TX, 30100153 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,102      
Initial Cost of Buildings & Improvements 32,323      
Cost Capitalized Subsequent to Acquisition 910      
Carrying Amount of Land 3,242      
Carrying Amount of Buildings and Improvements 33,094      
Accumulated Depreciation [1] $ 3,999      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2014      
Outpatient Medical [Member] | Houston, TX, 31316101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 378      
Initial Cost of Buildings & Improvements 31,206      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 378      
Carrying Amount of Buildings and Improvements 31,206      
Accumulated Depreciation [1] $ 6,893      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 1981      
Outpatient Medical [Member] | Houston, TX, 31316102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 91      
Initial Cost of Buildings & Improvements 10,613      
Cost Capitalized Subsequent to Acquisition 1,217      
Carrying Amount of Land 91      
Carrying Amount of Buildings and Improvements 11,830      
Accumulated Depreciation [1] $ 3,098      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 1986      
Outpatient Medical [Member] | Houston, TX, 31341102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,688      
Initial Cost of Buildings & Improvements 13,313      
Cost Capitalized Subsequent to Acquisition 91      
Carrying Amount of Land 3,688      
Carrying Amount of Buildings and Improvements 13,405      
Accumulated Depreciation [1] $ 2,374      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Houston, TX, 31341103 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 80,886      
Carrying Amount of Land 12,815      
Carrying Amount of Buildings and Improvements 68,072      
Accumulated Depreciation [1] $ 9,242      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 1998      
Outpatient Medical [Member] | Hudson, OH, 31356101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,587      
Initial Cost of Buildings & Improvements 13,720      
Cost Capitalized Subsequent to Acquisition 396      
Carrying Amount of Land 2,587      
Carrying Amount of Buildings and Improvements 14,116      
Accumulated Depreciation [1] $ 3,403      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2006      
Outpatient Medical [Member] | Humble, TX, 30100150 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 9,941      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 9,941      
Accumulated Depreciation [1] $ 539      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2014      
Outpatient Medical [Member] | Jackson, MI, 31390101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 607      
Initial Cost of Buildings & Improvements 17,367      
Cost Capitalized Subsequent to Acquisition 83      
Carrying Amount of Land 668      
Carrying Amount of Buildings and Improvements 17,389      
Accumulated Depreciation [1] $ 2,917      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Jupiter, FL, 31151101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,252      
Initial Cost of Buildings & Improvements 11,415      
Cost Capitalized Subsequent to Acquisition 2,903      
Carrying Amount of Land 2,608      
Carrying Amount of Buildings and Improvements 13,962      
Accumulated Depreciation [1] $ 4,344      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 2001      
Outpatient Medical [Member] | Jupiter, FL, 31186101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,825      
Initial Cost of Buildings & Improvements 5,858      
Cost Capitalized Subsequent to Acquisition 884      
Carrying Amount of Land 3,005      
Carrying Amount of Buildings and Improvements 6,562      
Accumulated Depreciation [1] $ 2,579      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2004      
Outpatient Medical [Member] | Kenosha, WI, 31234101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 6,110      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 18,058      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 18,058      
Accumulated Depreciation [1] $ 4,086      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1993      
Outpatient Medical [Member] | Killeen, TX, 31268101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 760      
Initial Cost of Buildings & Improvements 22,878      
Cost Capitalized Subsequent to Acquisition 76      
Carrying Amount of Land 760      
Carrying Amount of Buildings and Improvements 22,954      
Accumulated Depreciation [1] $ 6,000      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2010      
Outpatient Medical [Member] | Kyle, TX, 30100158 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,569      
Initial Cost of Buildings & Improvements 14,384      
Cost Capitalized Subsequent to Acquisition 372      
Carrying Amount of Land 2,569      
Carrying Amount of Buildings and Improvements 14,756      
Accumulated Depreciation [1] $ 1,676      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2011      
Outpatient Medical [Member] | La Jolla, CA, 31449101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 12,855      
Initial Cost of Buildings & Improvements 32,229      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 12,855      
Carrying Amount of Buildings and Improvements 32,229      
Accumulated Depreciation [1] $ 2,871      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 1989      
Outpatient Medical [Member] | La Jolla, CA, 31450101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 9,425      
Initial Cost of Buildings & Improvements 26,571      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 9,425      
Carrying Amount of Buildings and Improvements 26,571      
Accumulated Depreciation [1] $ 1,665      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 1988      
Outpatient Medical [Member] | La Quinta, CA, 30100162 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,266      
Initial Cost of Buildings & Improvements 22,066      
Cost Capitalized Subsequent to Acquisition 180      
Carrying Amount of Land 3,279      
Carrying Amount of Buildings and Improvements 22,234      
Accumulated Depreciation [1] $ 2,727      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2006      
Outpatient Medical [Member] | Lake St Louis, MO, 31266101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 240      
Initial Cost of Buildings & Improvements 14,249      
Cost Capitalized Subsequent to Acquisition 106      
Carrying Amount of Land 240      
Carrying Amount of Buildings and Improvements 14,355      
Accumulated Depreciation [1] $ 3,919      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2008      
Outpatient Medical [Member] | Lakeway, TX, 31215101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 2,801      
Carrying Amount of Land 2,801      
Carrying Amount of Buildings and Improvements 0      
Accumulated Depreciation [1] $ 0      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 1900      
Outpatient Medical [Member] | Lakewood, CA, 31131101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 146      
Initial Cost of Buildings & Improvements 14,885      
Cost Capitalized Subsequent to Acquisition 1,957      
Carrying Amount of Land 146      
Carrying Amount of Buildings and Improvements 16,842      
Accumulated Depreciation [1] $ 5,315      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1993      
Outpatient Medical [Member] | Lakewood, WA, 31368101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 72      
Initial Cost of Buildings & Improvements 16,017      
Cost Capitalized Subsequent to Acquisition 658      
Carrying Amount of Land 72      
Carrying Amount of Buildings and Improvements 16,675      
Accumulated Depreciation [1] $ 2,561      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2005      
Outpatient Medical [Member] | Las Vegas, NV, 30208101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 6,127      
Carrying Amount of Land 6,127      
Carrying Amount of Buildings and Improvements 0      
Accumulated Depreciation [1] $ 0      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 1900      
Outpatient Medical [Member] | Las Vegas, NV, 31104101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,319      
Initial Cost of Buildings & Improvements 4,612      
Cost Capitalized Subsequent to Acquisition 1,021      
Carrying Amount of Land 2,319      
Carrying Amount of Buildings and Improvements 5,632      
Accumulated Depreciation [1] $ 2,254      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1991      
Outpatient Medical [Member] | Las Vegas, NV, 31139101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 74      
Initial Cost of Buildings & Improvements 15,287      
Cost Capitalized Subsequent to Acquisition 1,259      
Carrying Amount of Land 74      
Carrying Amount of Buildings and Improvements 16,546      
Accumulated Depreciation [1] $ 5,430      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 2000      
Outpatient Medical [Member] | Las Vegas, NV, 31179101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 433      
Initial Cost of Buildings & Improvements 6,921      
Cost Capitalized Subsequent to Acquisition 212      
Carrying Amount of Land 433      
Carrying Amount of Buildings and Improvements 7,133      
Accumulated Depreciation [1] $ 2,763      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 1997      
Outpatient Medical [Member] | Lenexa, KS, 31282101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 540      
Initial Cost of Buildings & Improvements 17,926      
Cost Capitalized Subsequent to Acquisition 302      
Carrying Amount of Land 540      
Carrying Amount of Buildings and Improvements 18,228      
Accumulated Depreciation [1] $ 3,995      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2008      
Outpatient Medical [Member] | Lenexa, KS, 31375101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 100      
Initial Cost of Buildings & Improvements 13,723      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 100      
Carrying Amount of Buildings and Improvements 13,723      
Accumulated Depreciation [1] $ 969      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Lincoln, NE, 31262101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,420      
Initial Cost of Buildings & Improvements 29,723      
Cost Capitalized Subsequent to Acquisition 153      
Carrying Amount of Land 1,420      
Carrying Amount of Buildings and Improvements 29,876      
Accumulated Depreciation [1] $ 8,758      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2003      
Outpatient Medical [Member] | London, UKI, LDN2 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 17,395      
Initial Cost of Buildings & Improvements 152,642      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 17,395      
Carrying Amount of Buildings and Improvements 152,642      
Accumulated Depreciation [1] $ 7,015      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 2010      
Outpatient Medical [Member] | London, UKI, LDN3 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,948      
Initial Cost of Buildings & Improvements 27,188      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,948      
Carrying Amount of Buildings and Improvements 27,188      
Accumulated Depreciation [1] $ 1,250      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 2003      
Outpatient Medical [Member] | London, UKI, LDN4 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 5,058      
Initial Cost of Buildings & Improvements 11,174      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 5,058      
Carrying Amount of Buildings and Improvements 11,174      
Accumulated Depreciation [1] $ 514      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Los Alamitos, CA, 31180101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 39      
Initial Cost of Buildings & Improvements 18,635      
Cost Capitalized Subsequent to Acquisition 1,087      
Carrying Amount of Land 39      
Carrying Amount of Buildings and Improvements 19,722      
Accumulated Depreciation [1] $ 6,191      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2003      
Outpatient Medical [Member] | Los Gatos, CA, 31132101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 488      
Initial Cost of Buildings & Improvements 22,386      
Cost Capitalized Subsequent to Acquisition 1,761      
Carrying Amount of Land 488      
Carrying Amount of Buildings and Improvements 24,147      
Accumulated Depreciation [1] $ 9,201      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1993      
Outpatient Medical [Member] | Loxahatchee, FL, 31147101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,637      
Initial Cost of Buildings & Improvements 5,048      
Cost Capitalized Subsequent to Acquisition 1,024      
Carrying Amount of Land 1,719      
Carrying Amount of Buildings and Improvements 5,990      
Accumulated Depreciation [1] $ 2,272      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1997      
Outpatient Medical [Member] | Loxahatchee, FL, 31155101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,340      
Initial Cost of Buildings & Improvements 6,509      
Cost Capitalized Subsequent to Acquisition 761      
Carrying Amount of Land 1,440      
Carrying Amount of Buildings and Improvements 7,170      
Accumulated Depreciation [1] $ 2,582      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1993      
Outpatient Medical [Member] | Loxahatchee, FL, 31156101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,553      
Initial Cost of Buildings & Improvements 4,694      
Cost Capitalized Subsequent to Acquisition 1,121      
Carrying Amount of Land 1,650      
Carrying Amount of Buildings and Improvements 5,719      
Accumulated Depreciation [1] $ 2,083      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1994      
Outpatient Medical [Member] | Marietta, GA, 31477101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,682      
Initial Cost of Buildings & Improvements 20,053      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,682      
Carrying Amount of Buildings and Improvements 20,053      
Accumulated Depreciation [1] $ 0      
Year Acquired Jan. 01, 2016      
Year Built Jan. 01, 2016      
Outpatient Medical [Member] | Marinette, WI, 31236101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 5,455      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 13,538      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 13,538      
Accumulated Depreciation [1] $ 3,685      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2002      
Outpatient Medical [Member] | Melbourne, FL, 30100154 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,439      
Initial Cost of Buildings & Improvements 50,461      
Cost Capitalized Subsequent to Acquisition 318      
Carrying Amount of Land 3,439      
Carrying Amount of Buildings and Improvements 50,779      
Accumulated Depreciation [1] $ 5,089      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Menasha, WI, 31441101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,374      
Initial Cost of Buildings & Improvements 13,861      
Cost Capitalized Subsequent to Acquisition 3,119      
Carrying Amount of Land 1,374      
Carrying Amount of Buildings and Improvements 16,980      
Accumulated Depreciation [1] $ 650      
Year Acquired Jan. 01, 2016      
Year Built Jan. 01, 1994      
Outpatient Medical [Member] | Merced, CA, 31224101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 14,585      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 14,585      
Accumulated Depreciation [1] $ 3,858      
Year Acquired Jan. 01, 2009      
Year Built Jan. 01, 2010      
Outpatient Medical [Member] | Merriam, KS, 31280101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 176      
Initial Cost of Buildings & Improvements 8,005      
Cost Capitalized Subsequent to Acquisition 133      
Carrying Amount of Land 176      
Carrying Amount of Buildings and Improvements 8,138      
Accumulated Depreciation [1] $ 2,592      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 1972      
Outpatient Medical [Member] | Merriam, KS, 31280102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 1,996      
Cost Capitalized Subsequent to Acquisition 2,166      
Carrying Amount of Land 81      
Carrying Amount of Buildings and Improvements 4,081      
Accumulated Depreciation [1] $ 1,347      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 1980      
Outpatient Medical [Member] | Merriam, KS, 31280103 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 10,222      
Cost Capitalized Subsequent to Acquisition 4,283      
Carrying Amount of Land 358      
Carrying Amount of Buildings and Improvements 14,146      
Accumulated Depreciation [1] $ 4,293      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 1977      
Outpatient Medical [Member] | Merriam, KS, 31280104 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 5,862      
Cost Capitalized Subsequent to Acquisition 3,132      
Carrying Amount of Land 182      
Carrying Amount of Buildings and Improvements 8,811      
Accumulated Depreciation [1] $ 2,655      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 1985      
Outpatient Medical [Member] | Merriam, KS, 31391101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,226      
Initial Cost of Buildings & Improvements 24,998      
Cost Capitalized Subsequent to Acquisition 62      
Carrying Amount of Land 1,257      
Carrying Amount of Buildings and Improvements 25,029      
Accumulated Depreciation [1] $ 3,699      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Merrillville, IN, 31199101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 22,134      
Cost Capitalized Subsequent to Acquisition 689      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 22,823      
Accumulated Depreciation [1] $ 5,749      
Year Acquired Jan. 01, 2008      
Year Built Jan. 01, 2006      
Outpatient Medical [Member] | Mesa, AZ, 31195101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,558      
Initial Cost of Buildings & Improvements 9,561      
Cost Capitalized Subsequent to Acquisition 653      
Carrying Amount of Land 1,558      
Carrying Amount of Buildings and Improvements 10,214      
Accumulated Depreciation [1] $ 3,928      
Year Acquired Jan. 01, 2008      
Year Built Jan. 01, 1989      
Outpatient Medical [Member] | Mesquite, TX, 30100145 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 496      
Initial Cost of Buildings & Improvements 3,834      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 496      
Carrying Amount of Buildings and Improvements 3,834      
Accumulated Depreciation [1] $ 699      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2012      
Outpatient Medical [Member] | Milwaukee, WI, 31232101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 3,658      
Initial Cost of Land 540      
Initial Cost of Buildings & Improvements 8,457      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 540      
Carrying Amount of Buildings and Improvements 8,457      
Accumulated Depreciation [1] $ 2,069      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1930      
Outpatient Medical [Member] | Milwaukee, WI, 31232102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 8,062      
Initial Cost of Land 1,425      
Initial Cost of Buildings & Improvements 11,520      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,425      
Carrying Amount of Buildings and Improvements 11,520      
Accumulated Depreciation [1] $ 3,676      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1962      
Outpatient Medical [Member] | Milwaukee, WI, 31232109 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 2,016      
Initial Cost of Land 922      
Initial Cost of Buildings & Improvements 2,185      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 922      
Carrying Amount of Buildings and Improvements 2,185      
Accumulated Depreciation [1] $ 871      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1958      
Outpatient Medical [Member] | Milwaukee, WI, 31234102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 15,896      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 44,535      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 44,535      
Accumulated Depreciation [1] $ 9,857      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1983      
Outpatient Medical [Member] | Mission Hills, CA, 31421101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 24,796      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 42,276      
Cost Capitalized Subsequent to Acquisition 2,080      
Carrying Amount of Land 4,791      
Carrying Amount of Buildings and Improvements 39,565      
Accumulated Depreciation [1] $ 4,793      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 1986      
Outpatient Medical [Member] | Missouri City, TX, 30100185 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 8,883      
Carrying Amount of Land 1,360      
Carrying Amount of Buildings and Improvements 7,523      
Accumulated Depreciation [1] $ 63      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 2016      
Outpatient Medical [Member] | Moline, IL, 31359101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 8,783      
Cost Capitalized Subsequent to Acquisition 29      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 8,812      
Accumulated Depreciation [1] $ 715      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Monticello, MN, 31367101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 8,021      
Initial Cost of Land 61      
Initial Cost of Buildings & Improvements 18,489      
Cost Capitalized Subsequent to Acquisition 48      
Carrying Amount of Land 61      
Carrying Amount of Buildings and Improvements 18,537      
Accumulated Depreciation [1] $ 2,651      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2008      
Outpatient Medical [Member] | Moorestown, NJ, 31296101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 6      
Initial Cost of Buildings & Improvements 50,896      
Cost Capitalized Subsequent to Acquisition 6      
Carrying Amount of Land 6      
Carrying Amount of Buildings and Improvements 50,902      
Accumulated Depreciation [1] $ 8,377      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2012      
Outpatient Medical [Member] | Mount Juliet, TN, 31194101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 2,479      
Initial Cost of Land 1,566      
Initial Cost of Buildings & Improvements 11,697      
Cost Capitalized Subsequent to Acquisition 1,173      
Carrying Amount of Land 1,566      
Carrying Amount of Buildings and Improvements 12,870      
Accumulated Depreciation [1] $ 4,749      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2005      
Outpatient Medical [Member] | Mount Vernon, IL, 31288101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 24,892      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 24,892      
Accumulated Depreciation [1] $ 4,238      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2012      
Outpatient Medical [Member] | Murrieta, CA, 30100167 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,800      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,800      
Carrying Amount of Buildings and Improvements 0      
Accumulated Depreciation [1] $ 0      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 1900      
Outpatient Medical [Member] | Murrieta, CA, 31242101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 47,190      
Cost Capitalized Subsequent to Acquisition 46      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 47,236      
Accumulated Depreciation [1] $ 13,323      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2011      
Outpatient Medical [Member] | Muskego, WI, 31232106 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 970      
Initial Cost of Land 964      
Initial Cost of Buildings & Improvements 2,159      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 964      
Carrying Amount of Buildings and Improvements 2,159      
Accumulated Depreciation [1] $ 488      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1993      
Outpatient Medical [Member] | Nashville, TN, 31106101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,806      
Initial Cost of Buildings & Improvements 7,165      
Cost Capitalized Subsequent to Acquisition 3,120      
Carrying Amount of Land 1,806      
Carrying Amount of Buildings and Improvements 10,285      
Accumulated Depreciation [1] $ 3,787      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1986      
Outpatient Medical [Member] | New Albany, IN, 30100159 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,411      
Initial Cost of Buildings & Improvements 16,494      
Cost Capitalized Subsequent to Acquisition 30      
Carrying Amount of Land 2,411      
Carrying Amount of Buildings and Improvements 16,524      
Accumulated Depreciation [1] $ 1,656      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2001      
Outpatient Medical [Member] | New Berlin, WI, 31232107 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 3,738      
Initial Cost of Land 3,739      
Initial Cost of Buildings & Improvements 8,290      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,739      
Carrying Amount of Buildings and Improvements 8,290      
Accumulated Depreciation [1] $ 2,035      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1993      
Outpatient Medical [Member] | Niagara Falls, NY, 31191101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,433      
Initial Cost of Buildings & Improvements 10,891      
Cost Capitalized Subsequent to Acquisition 448      
Carrying Amount of Land 1,731      
Carrying Amount of Buildings and Improvements 11,042      
Accumulated Depreciation [1] $ 4,807      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 1995      
Outpatient Medical [Member] | Niagara Falls, NY, 31191102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 454      
Initial Cost of Buildings & Improvements 8,362      
Cost Capitalized Subsequent to Acquisition 322      
Carrying Amount of Land 454      
Carrying Amount of Buildings and Improvements 8,683      
Accumulated Depreciation [1] $ 2,662      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2004      
Outpatient Medical [Member] | Oklahoma City, OK, 31369101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 216      
Initial Cost of Buildings & Improvements 19,135      
Cost Capitalized Subsequent to Acquisition 280      
Carrying Amount of Land 216      
Carrying Amount of Buildings and Improvements 19,415      
Accumulated Depreciation [1] $ 3,515      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2008      
Outpatient Medical [Member] | Oro Valley, AZ, 31182101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 89      
Initial Cost of Buildings & Improvements 18,339      
Cost Capitalized Subsequent to Acquisition 856      
Carrying Amount of Land 89      
Carrying Amount of Buildings and Improvements 19,195      
Accumulated Depreciation [1] $ 6,000      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2004      
Outpatient Medical [Member] | Oshkosh, WI, 31235101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 18,339      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 18,339      
Accumulated Depreciation [1] $ 4,117      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2000      
Outpatient Medical [Member] | Oshkosh, WI, 31237101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 6,749      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 15,881      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 15,881      
Accumulated Depreciation [1] $ 3,528      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2000      
Outpatient Medical [Member] | Palmer, AK, 31188101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 217      
Initial Cost of Buildings & Improvements 29,705      
Cost Capitalized Subsequent to Acquisition 1,362      
Carrying Amount of Land 217      
Carrying Amount of Buildings and Improvements 31,067      
Accumulated Depreciation [1] $ 9,424      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2006      
Outpatient Medical [Member] | Pasadena, TX, 10104151 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,700      
Initial Cost of Buildings & Improvements 8,009      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,700      
Carrying Amount of Buildings and Improvements 8,009      
Accumulated Depreciation [1] $ 702      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Pearland, TX, 31341105 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,500      
Initial Cost of Buildings & Improvements 11,253      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,500      
Carrying Amount of Buildings and Improvements 11,253      
Accumulated Depreciation [1] $ 894      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Pearland, TX, 31429101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 9,594      
Initial Cost of Buildings & Improvements 32,753      
Cost Capitalized Subsequent to Acquisition 191      
Carrying Amount of Land 9,807      
Carrying Amount of Buildings and Improvements 32,731      
Accumulated Depreciation [1] $ 2,569      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Pendleton, OR, 31361101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 10,312      
Cost Capitalized Subsequent to Acquisition 6      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 10,318      
Accumulated Depreciation [1] $ 812      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Phoenix, AZ, 31123101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,149      
Initial Cost of Buildings & Improvements 48,018      
Cost Capitalized Subsequent to Acquisition 11,308      
Carrying Amount of Land 1,149      
Carrying Amount of Buildings and Improvements 59,327      
Accumulated Depreciation [1] $ 20,711      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1998      
Outpatient Medical [Member] | Pineville, NC, 31105101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 961      
Initial Cost of Buildings & Improvements 6,974      
Cost Capitalized Subsequent to Acquisition 2,463      
Carrying Amount of Land 1,077      
Carrying Amount of Buildings and Improvements 9,321      
Accumulated Depreciation [1] $ 3,747      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1988      
Outpatient Medical [Member] | Plano, TX, 31201101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 5,423      
Initial Cost of Buildings & Improvements 20,698      
Cost Capitalized Subsequent to Acquisition 57      
Carrying Amount of Land 5,423      
Carrying Amount of Buildings and Improvements 20,755      
Accumulated Depreciation [1] $ 10,292      
Year Acquired Jan. 01, 2008      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Plano, TX, 31314101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 51,686      
Initial Cost of Land 793      
Initial Cost of Buildings & Improvements 83,209      
Cost Capitalized Subsequent to Acquisition 989      
Carrying Amount of Land 793      
Carrying Amount of Buildings and Improvements 84,198      
Accumulated Depreciation [1] $ 16,056      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2005      
Outpatient Medical [Member] | Plantation, FL, 31140101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 8,563      
Initial Cost of Buildings & Improvements 10,666      
Cost Capitalized Subsequent to Acquisition 3,475      
Carrying Amount of Land 8,575      
Carrying Amount of Buildings and Improvements 14,130      
Accumulated Depreciation [1] $ 6,384      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1997      
Outpatient Medical [Member] | Plantation, FL, 31141101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 8,848      
Initial Cost of Buildings & Improvements 9,262      
Cost Capitalized Subsequent to Acquisition 640      
Carrying Amount of Land 8,908      
Carrying Amount of Buildings and Improvements 9,842      
Accumulated Depreciation [1] $ 6,207      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1996      
Outpatient Medical [Member] | Plymouth, WI, 31232103 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 1,131      
Initial Cost of Land 1,250      
Initial Cost of Buildings & Improvements 1,870      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,250      
Carrying Amount of Buildings and Improvements 1,870      
Accumulated Depreciation [1] $ 515      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1991      
Outpatient Medical [Member] | Portland, ME, 31301101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 655      
Initial Cost of Buildings & Improvements 25,930      
Cost Capitalized Subsequent to Acquisition 13      
Carrying Amount of Land 655      
Carrying Amount of Buildings and Improvements 25,943      
Accumulated Depreciation [1] $ 6,128      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2008      
Outpatient Medical [Member] | Redmond, WA, 31245 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 5,015      
Initial Cost of Buildings & Improvements 26,709      
Cost Capitalized Subsequent to Acquisition 284      
Carrying Amount of Land 5,015      
Carrying Amount of Buildings and Improvements 26,993      
Accumulated Depreciation [1] $ 6,187      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2011      
Outpatient Medical [Member] | Reno, NV, 31116101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,117      
Initial Cost of Buildings & Improvements 21,972      
Cost Capitalized Subsequent to Acquisition 2,070      
Carrying Amount of Land 1,117      
Carrying Amount of Buildings and Improvements 24,042      
Accumulated Depreciation [1] $ 7,907      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1991      
Outpatient Medical [Member] | Richmond, TX, 30100168 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 11,118      
Carrying Amount of Land 2,000      
Carrying Amount of Buildings and Improvements 9,118      
Accumulated Depreciation [1] $ 171      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 2016      
Outpatient Medical [Member] | Richmond, VA, 31307101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,969      
Initial Cost of Buildings & Improvements 26,697      
Cost Capitalized Subsequent to Acquisition 60      
Carrying Amount of Land 3,004      
Carrying Amount of Buildings and Improvements 26,722      
Accumulated Depreciation [1] $ 5,926      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2008      
Outpatient Medical [Member] | Rockwall, TX, 30100131 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 132      
Initial Cost of Buildings & Improvements 17,197      
Cost Capitalized Subsequent to Acquisition 522      
Carrying Amount of Land 132      
Carrying Amount of Buildings and Improvements 17,719      
Accumulated Depreciation [1] $ 3,516      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2008      
Outpatient Medical [Member] | Rogers, AR, 31309101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,062      
Initial Cost of Buildings & Improvements 29,277      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,062      
Carrying Amount of Buildings and Improvements 29,277      
Accumulated Depreciation [1] $ 7,493      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2008      
Outpatient Medical [Member] | Rolla, MO, 30100129 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,931      
Initial Cost of Buildings & Improvements 47,639      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,931      
Carrying Amount of Buildings and Improvements 47,639      
Accumulated Depreciation [1] $ 9,312      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Roswell, NM, 31332101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 183      
Initial Cost of Buildings & Improvements 5,851      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 183      
Carrying Amount of Buildings and Improvements 5,851      
Accumulated Depreciation [1] $ 1,368      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2004      
Outpatient Medical [Member] | Roswell, NM, 31333101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 883      
Initial Cost of Buildings & Improvements 15,984      
Cost Capitalized Subsequent to Acquisition 30      
Carrying Amount of Land 883      
Carrying Amount of Buildings and Improvements 16,014      
Accumulated Depreciation [1] $ 3,346      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2006      
Outpatient Medical [Member] | Roswell, NM, 31334101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 762      
Initial Cost of Buildings & Improvements 17,171      
Cost Capitalized Subsequent to Acquisition 1      
Carrying Amount of Land 762      
Carrying Amount of Buildings and Improvements 17,171      
Accumulated Depreciation [1] $ 2,916      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Sacramento, CA, 31115101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 866      
Initial Cost of Buildings & Improvements 12,756      
Cost Capitalized Subsequent to Acquisition 1,834      
Carrying Amount of Land 869      
Carrying Amount of Buildings and Improvements 14,587      
Accumulated Depreciation [1] $ 5,092      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1990      
Outpatient Medical [Member] | Salem, NH, 31397101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,655      
Initial Cost of Buildings & Improvements 14,050      
Cost Capitalized Subsequent to Acquisition 20      
Carrying Amount of Land 1,655      
Carrying Amount of Buildings and Improvements 14,070      
Accumulated Depreciation [1] $ 1,716      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | San Antonio, TX, 31111101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,012      
Initial Cost of Buildings & Improvements 10,178      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,012      
Carrying Amount of Buildings and Improvements 10,178      
Accumulated Depreciation [1] $ 4,177      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1999      
Outpatient Medical [Member] | San Antonio, TX, 31111102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,038      
Initial Cost of Buildings & Improvements 9,173      
Cost Capitalized Subsequent to Acquisition 1,777      
Carrying Amount of Land 1,038      
Carrying Amount of Buildings and Improvements 10,950      
Accumulated Depreciation [1] $ 4,777      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1999      
Outpatient Medical [Member] | San Antonio, TX, 31319101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 4,518      
Initial Cost of Buildings & Improvements 31,041      
Cost Capitalized Subsequent to Acquisition 2,610      
Carrying Amount of Land 4,548      
Carrying Amount of Buildings and Improvements 33,621      
Accumulated Depreciation [1] $ 7,824      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 1986      
Outpatient Medical [Member] | San Antonio, TX, 31403101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 900      
Initial Cost of Buildings & Improvements 17,288      
Cost Capitalized Subsequent to Acquisition 473      
Carrying Amount of Land 900      
Carrying Amount of Buildings and Improvements 17,761      
Accumulated Depreciation [1] $ 2,700      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Santa Clarita, CA, 31415101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 2,338      
Cost Capitalized Subsequent to Acquisition 19,914      
Carrying Amount of Land 5,196      
Carrying Amount of Buildings and Improvements 17,056      
Accumulated Depreciation [1] $ 1,932      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 1976      
Outpatient Medical [Member] | Santa Clarita, CA, 31415102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 28,384      
Cost Capitalized Subsequent to Acquisition 1,926      
Carrying Amount of Land 5,250      
Carrying Amount of Buildings and Improvements 25,060      
Accumulated Depreciation [1] $ 2,736      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 1998      
Outpatient Medical [Member] | Santa Clarita, CA, 31415103 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 278      
Initial Cost of Buildings & Improvements 185      
Cost Capitalized Subsequent to Acquisition 11,595      
Carrying Amount of Land 11,872      
Carrying Amount of Buildings and Improvements 185      
Accumulated Depreciation [1] $ 95      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 1996      
Outpatient Medical [Member] | Santa Clarita, CA, 31419101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 25,000      
Initial Cost of Land 295      
Initial Cost of Buildings & Improvements 40,257      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 295      
Carrying Amount of Buildings and Improvements 40,257      
Accumulated Depreciation [1] $ 2,745      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Santa Clarita, CA, 31422102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 20,618      
Cost Capitalized Subsequent to Acquisition 375      
Carrying Amount of Land 4,407      
Carrying Amount of Buildings and Improvements 16,586      
Accumulated Depreciation [1] $ 1,957      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 1989      
Outpatient Medical [Member] | Sarasota, FL, 30100123 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 62      
Initial Cost of Buildings & Improvements 47,325      
Cost Capitalized Subsequent to Acquisition 1,964      
Carrying Amount of Land 62      
Carrying Amount of Buildings and Improvements 49,290      
Accumulated Depreciation [1] $ 9,088      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 1990      
Outpatient Medical [Member] | Seattle, WA, 31284101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 4,410      
Initial Cost of Buildings & Improvements 38,428      
Cost Capitalized Subsequent to Acquisition 392      
Carrying Amount of Land 4,410      
Carrying Amount of Buildings and Improvements 38,820      
Accumulated Depreciation [1] $ 11,598      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2010      
Outpatient Medical [Member] | Sewell, NJ, 31207101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 60      
Initial Cost of Buildings & Improvements 57,929      
Cost Capitalized Subsequent to Acquisition 294      
Carrying Amount of Land 74      
Carrying Amount of Buildings and Improvements 58,209      
Accumulated Depreciation [1] $ 18,809      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Shakopee, MN, 31263101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 6,132      
Initial Cost of Land 508      
Initial Cost of Buildings & Improvements 11,412      
Cost Capitalized Subsequent to Acquisition 275      
Carrying Amount of Land 509      
Carrying Amount of Buildings and Improvements 11,687      
Accumulated Depreciation [1] $ 3,201      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1996      
Outpatient Medical [Member] | Shakopee, MN, 31270101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 10,363      
Initial Cost of Land 707      
Initial Cost of Buildings & Improvements 18,089      
Cost Capitalized Subsequent to Acquisition 66      
Carrying Amount of Land 773      
Carrying Amount of Buildings and Improvements 18,089      
Accumulated Depreciation [1] $ 3,781      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Sheboygan, WI, 31232104 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 1,563      
Initial Cost of Land 1,012      
Initial Cost of Buildings & Improvements 2,216      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,012      
Carrying Amount of Buildings and Improvements 2,216      
Accumulated Depreciation [1] $ 616      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1958      
Outpatient Medical [Member] | Shenandoah, TX, 30100151 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 21,135      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 21,135      
Accumulated Depreciation [1] $ 1,057      
Year Acquired Jan. 01, 2013      
Year Built Jan. 01, 2014      
Outpatient Medical [Member] | Sherman Oaks, CA, 31422101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 32,186      
Cost Capitalized Subsequent to Acquisition 2,423      
Carrying Amount of Land 3,121      
Carrying Amount of Buildings and Improvements 31,488      
Accumulated Depreciation [1] $ 3,439      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 1969      
Outpatient Medical [Member] | Somerville, NJ, 30100121 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,400      
Initial Cost of Buildings & Improvements 22,244      
Cost Capitalized Subsequent to Acquisition 2      
Carrying Amount of Land 3,400      
Carrying Amount of Buildings and Improvements 22,246      
Accumulated Depreciation [1] $ 4,681      
Year Acquired Jan. 01, 2008      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Southlake, TX, 30100169 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,000      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,000      
Carrying Amount of Buildings and Improvements 0      
Accumulated Depreciation [1] $ 0      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 1900      
Outpatient Medical [Member] | Southlake, TX, 31317101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 592      
Initial Cost of Buildings & Improvements 18,243      
Cost Capitalized Subsequent to Acquisition 338      
Carrying Amount of Land 592      
Carrying Amount of Buildings and Improvements 18,581      
Accumulated Depreciation [1] $ 3,616      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2004      
Outpatient Medical [Member] | Southlake, TX, 31318101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 17,534      
Initial Cost of Land 698      
Initial Cost of Buildings & Improvements 30,549      
Cost Capitalized Subsequent to Acquisition 3,840      
Carrying Amount of Land 698      
Carrying Amount of Buildings and Improvements 34,389      
Accumulated Depreciation [1] $ 5,370      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2004      
Outpatient Medical [Member] | Springfield, IL, 31461101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 11,919      
Carrying Amount of Land 1,568      
Carrying Amount of Buildings and Improvements 10,351      
Accumulated Depreciation [1] $ 459      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2011      
Outpatient Medical [Member] | Springfield, IL, 31462101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 3,728      
Carrying Amount of Land 177      
Carrying Amount of Buildings and Improvements 3,551      
Accumulated Depreciation [1] $ 161      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2011      
Outpatient Medical [Member] | St Paul, MN, 31425101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 49      
Initial Cost of Buildings & Improvements 37,695      
Cost Capitalized Subsequent to Acquisition 330      
Carrying Amount of Land 49      
Carrying Amount of Buildings and Improvements 38,025      
Accumulated Depreciation [1] $ 2,691      
Year Acquired Jan. 01, 2014      
Year Built Jan. 01, 2006      
Outpatient Medical [Member] | St. Louis, MO, 31175101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 336      
Initial Cost of Buildings & Improvements 17,247      
Cost Capitalized Subsequent to Acquisition 1,501      
Carrying Amount of Land 336      
Carrying Amount of Buildings and Improvements 18,748      
Accumulated Depreciation [1] $ 6,141      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2001      
Outpatient Medical [Member] | St. Paul, MN, 31276101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,706      
Initial Cost of Buildings & Improvements 39,507      
Cost Capitalized Subsequent to Acquisition 11      
Carrying Amount of Land 2,701      
Carrying Amount of Buildings and Improvements 39,523      
Accumulated Depreciation [1] $ 9,139      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Stamford, CT, 31439101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 0      
Cost Capitalized Subsequent to Acquisition 41,153      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 41,153      
Accumulated Depreciation [1] $ 0      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 2016      
Outpatient Medical [Member] | Suffern, NY, 30100130 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 653      
Initial Cost of Buildings & Improvements 37,255      
Cost Capitalized Subsequent to Acquisition 200      
Carrying Amount of Land 696      
Carrying Amount of Buildings and Improvements 37,412      
Accumulated Depreciation [1] $ 8,423      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Suffolk, VA, 30100122 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,566      
Initial Cost of Buildings & Improvements 11,511      
Cost Capitalized Subsequent to Acquisition 25      
Carrying Amount of Land 1,566      
Carrying Amount of Buildings and Improvements 11,537      
Accumulated Depreciation [1] $ 3,829      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2007      
Outpatient Medical [Member] | Sugar Land, TX, 31363101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 8,076      
Initial Cost of Land 3,543      
Initial Cost of Buildings & Improvements 15,532      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,543      
Carrying Amount of Buildings and Improvements 15,532      
Accumulated Depreciation [1] $ 3,526      
Year Acquired Jan. 01, 2012      
Year Built Jan. 01, 2005      
Outpatient Medical [Member] | Summit, WI, 31221101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,899      
Initial Cost of Buildings & Improvements 87,416      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 2,899      
Carrying Amount of Buildings and Improvements 87,416      
Accumulated Depreciation [1] $ 26,616      
Year Acquired Jan. 01, 2008      
Year Built Jan. 01, 2009      
Outpatient Medical [Member] | Tacoma, WA, 31302101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 64,307      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 64,307      
Accumulated Depreciation [1] $ 11,469      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2013      
Outpatient Medical [Member] | Tallahassee, FL, 31241101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 17,449      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 17,449      
Accumulated Depreciation [1] $ 4,335      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2011      
Outpatient Medical [Member] | Tampa, FL, 30100125 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 4,319      
Initial Cost of Buildings & Improvements 12,234      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 4,319      
Carrying Amount of Buildings and Improvements 12,234      
Accumulated Depreciation [1] $ 2,047      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2003      
Outpatient Medical [Member] | Temple, TX, 31305101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 2,900      
Initial Cost of Buildings & Improvements 9,954      
Cost Capitalized Subsequent to Acquisition 26      
Carrying Amount of Land 2,900      
Carrying Amount of Buildings and Improvements 9,980      
Accumulated Depreciation [1] $ 1,122      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 2012      
Outpatient Medical [Member] | Tucson, AZ, 31197101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 1,302      
Initial Cost of Buildings & Improvements 4,925      
Cost Capitalized Subsequent to Acquisition 847      
Carrying Amount of Land 1,325      
Carrying Amount of Buildings and Improvements 5,749      
Accumulated Depreciation [1] $ 2,429      
Year Acquired Jan. 01, 2008      
Year Built Jan. 01, 1995      
Outpatient Medical [Member] | Tustin, CA, 31447101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,345      
Initial Cost of Buildings & Improvements 541      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,345      
Carrying Amount of Buildings and Improvements 541      
Accumulated Depreciation [1] $ 193      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 1976      
Outpatient Medical [Member] | Tustin, CA, 31447102 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,361      
Initial Cost of Buildings & Improvements 12,039      
Cost Capitalized Subsequent to Acquisition 1,374      
Carrying Amount of Land 3,361      
Carrying Amount of Buildings and Improvements 13,413      
Accumulated Depreciation [1] $ 1,294      
Year Acquired Jan. 01, 2015      
Year Built Jan. 01, 1985      
Outpatient Medical [Member] | Van Nuys, CA, 31231101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 36,187      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 36,187      
Accumulated Depreciation [1] $ 7,655      
Year Acquired Jan. 01, 2009      
Year Built Jan. 01, 1991      
Outpatient Medical [Member] | Voorhees, NJ, 31117101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 6,404      
Initial Cost of Buildings & Improvements 24,251      
Cost Capitalized Subsequent to Acquisition 1,474      
Carrying Amount of Land 6,477      
Carrying Amount of Buildings and Improvements 25,651      
Accumulated Depreciation [1] $ 8,389      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 1997      
Outpatient Medical [Member] | Voorhees, NJ, 31255101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 6      
Initial Cost of Buildings & Improvements 96,075      
Cost Capitalized Subsequent to Acquisition 77      
Carrying Amount of Land 6      
Carrying Amount of Buildings and Improvements 96,152      
Accumulated Depreciation [1] $ 17,750      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 2012      
Outpatient Medical [Member] | Waxahachie, TX, 30100201 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 0      
Initial Cost of Buildings & Improvements 18,784      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 0      
Carrying Amount of Buildings and Improvements 18,784      
Accumulated Depreciation [1] $ 40      
Year Acquired Jan. 01, 2016      
Year Built Jan. 01, 2014      
Outpatient Medical [Member] | Wellington, FL, 31160101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 107      
Initial Cost of Buildings & Improvements 16,933      
Cost Capitalized Subsequent to Acquisition 2,639      
Carrying Amount of Land 316      
Carrying Amount of Buildings and Improvements 19,364      
Accumulated Depreciation [1] $ 5,685      
Year Acquired Jan. 01, 2006      
Year Built Jan. 01, 2000      
Outpatient Medical [Member] | Wellington, FL, 31184101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 388      
Initial Cost of Buildings & Improvements 13,697      
Cost Capitalized Subsequent to Acquisition 1,572      
Carrying Amount of Land 580      
Carrying Amount of Buildings and Improvements 15,077      
Accumulated Depreciation [1] $ 4,256      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 2003      
Outpatient Medical [Member] | West Allis, WI, 31232108 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 2,869      
Initial Cost of Land 1,104      
Initial Cost of Buildings & Improvements 3,303      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 1,106      
Carrying Amount of Buildings and Improvements 3,301      
Accumulated Depreciation [1] $ 1,100      
Year Acquired Jan. 01, 2010      
Year Built Jan. 01, 1961      
Outpatient Medical [Member] | West Seneca, NY, 31190101 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 917      
Initial Cost of Buildings & Improvements 22,435      
Cost Capitalized Subsequent to Acquisition 3,531      
Carrying Amount of Land 1,665      
Carrying Amount of Buildings and Improvements 25,218      
Accumulated Depreciation [1] $ 8,459      
Year Acquired Jan. 01, 2007      
Year Built Jan. 01, 1990      
Outpatient Medical [Member] | Zephyrhills, FL, 30100127 Outpatient Medical [Member]        
Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost of Encumbrances $ 0      
Initial Cost of Land 3,875      
Initial Cost of Buildings & Improvements 27,270      
Cost Capitalized Subsequent to Acquisition 0      
Carrying Amount of Land 3,875      
Carrying Amount of Buildings and Improvements 27,270      
Accumulated Depreciation [1] $ 4,992      
Year Acquired Jan. 01, 2011      
Year Built Jan. 01, 1974      
[1]
Please see Note 2 to our consolidated financial statements for information regarding lives used for depreciation and amortization.