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Investment Activity (Dispositions Table) (Details) $ in Thousands	1 Months Ended		3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2021 USD ($) property	Aug. 31, 2021 USD ($) property	Dec. 31, 2021 USD ($) property	Sep. 30, 2021 USD ($) property	Jun. 30, 2021 USD ($) property facility	Jun. 30, 2022 USD ($) property	Sep. 30, 2022 USD ($) property	Dec. 31, 2022 USD ($) property facility	Dec. 31, 2021 USD ($) property	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	May 31, 2022 property
Real Estate [Line Items]
Properties | property								160
Proceeds from sales of real estate			$ 238,864					$ 168,958	$ 238,864	$ 39,631
Gains/Impairment on sales of real estate, net								28,342	$ 32,498	21,316
Impairment of real estate recognized during the year			$ 5,895					21,531		$ 6,400	$ 0
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property			22				22		22
Proceeds from sales of real estate								168,989
Net Real Estate Investment								143,038
Gains/Impairment on sales of real estate, net								28,342
Impairment of real estate recognized during the year								$ 2,391
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Net Real Estate Investment			$ 209,936						$ 209,936
Straight line rent adjustments			2,354
Gains/Impairment on sales of real estate, net			32,468
Hospital Corporation of America | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property								1
Proceeds from sales of real estate								$ 4,868
Net Real Estate Investment								1,904
Gains/Impairment on sales of real estate, net								$ 2,964
Impairment of real estate recognized during the year						$ 0
Vitality Senior Living | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property								1
Proceeds from sales of real estate								$ 8,302
Net Real Estate Investment								8,285
Gains/Impairment on sales of real estate, net								17
Impairment of real estate recognized during the year						$ 0
Holiday Vero Beach | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property						1
Proceeds from sales of real estate						$ 2,990
Net Real Estate Investment						3,020
Gains/Impairment on sales of real estate, net								0
Impairment of real estate recognized during the year						$ 30
Chancellor Senior Living | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property						2
Proceeds from sales of real estate						$ 7,305
Net Real Estate Investment						7,357
Gains/Impairment on sales of real estate, net								$ 0
Impairment of real estate recognized during the year						$ 52
Bickford
Real Estate [Line Items]
Properties								36				3
Proceeds from sales of real estate					$ 39,924
Gains/Impairment on sales of real estate, net					$ 3,568
Impairment of real estate recognized during the year				$ 0
Bickford | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property						3
Proceeds from sales of real estate						$ 25,959
Net Real Estate Investment						28,268
Gains/Impairment on sales of real estate, net								$ 0
Impairment of real estate recognized during the year						$ 2,309
Bickford | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property					6
Proceeds from sales of real estate								52,100
Net Real Estate Investment					$ 34,485
Straight line rent adjustments					1,871			(1,900)
Comfort Care Senior Living [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property						4
Proceeds from sales of real estate						$ 40,000
Net Real Estate Investment						38,444
Gains/Impairment on sales of real estate, net						1,556
Impairment of real estate recognized during the year						$ 0
Helix Healthcare | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property						1
Proceeds from sales of real estate						$ 19,500
Net Real Estate Investment						10,535
Gains/Impairment on sales of real estate, net						8,965
Impairment of real estate recognized during the year						0
Discovery Senior Living College Park | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property							2
Proceeds from sales of real estate							$ 16,379
Net Real Estate Investment							15,159
Gains/Impairment on sales of real estate, net							$ 1,220
Impairment of real estate recognized during the year						0
National HealthCare Corporation | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property							7
Proceeds from sales of real estate							$ 43,686
Net Real Estate Investment							30,066
Gains/Impairment on sales of real estate, net							$ 13,620
Impairment of real estate recognized during the year						$ 0
Community Health Systems
Real Estate [Line Items]
Proceeds from sales of real estate					3,887
Gains/Impairment on sales of real estate, net					$ 2,879
Impairment of real estate recognized during the year				0
Community Health Systems | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property					1
Net Real Estate Investment					$ 946
Straight line rent adjustments					$ 62
TrustPoint Hospital
Real Estate [Line Items]
Proceeds from sales of real estate				31,215
Gains/Impairment on sales of real estate, net				8,635
Impairment of real estate recognized during the year				$ 0
TrustPoint Hospital | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property	1			1
Net Real Estate Investment	$ 21,018			$ 21,018
Straight line rent adjustments				1,562
Holiday Acquisition Holdings
Real Estate [Line Items]
Properties | facility					17
Proceeds from sales of real estate				114,133
Gains/Impairment on sales of real estate, net		$ 1,900		1,882
Impairment of real estate recognized during the year				$ 0
Holiday Acquisition Holdings | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property	8	8		8
Net Real Estate Investment	$ 113,611			$ 113,611
Straight line rent adjustments				(1,360)
Quorum Health
Real Estate [Line Items]
Proceeds from sales of real estate				8,314
Gains/Impairment on sales of real estate, net				0
Impairment of real estate recognized during the year				$ 1,254
Quorum Health | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property	1			1
Net Real Estate Investment	$ 9,568			$ 9,568
Straight line rent adjustments				0
Senior Living Management
Real Estate [Line Items]
Proceeds from sales of real estate				12,847
Gains/Impairment on sales of real estate, net				9,425
Impairment of real estate recognized during the year				$ 0
Senior Living Management | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property	1			1
Net Real Estate Investment	$ 3,212			$ 3,212
Straight line rent adjustments				210
Holiday Arbor Glenn
Real Estate [Line Items]
Proceeds from sales of real estate				5,666
Gains/Impairment on sales of real estate, net				0
Impairment of real estate recognized during the year	$ 4,600			$ 4,641
Holiday Arbor Glenn | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property	1			1
Net Real Estate Investment	$ 10,388			$ 10,388
Straight line rent adjustments				(81)
Brookdale Senior Living
Real Estate [Line Items]
Proceeds from sales of real estate			11,880
Gains/Impairment on sales of real estate, net			$ 184
Impairment of real estate recognized during the year				0
Brookdale Senior Living | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property			1						1
Net Real Estate Investment			$ 11,696						$ 11,696
Straight line rent adjustments				0
Senior Living Management Grand Maitland
Real Estate [Line Items]
Proceeds from sales of real estate			7,275
Gains/Impairment on sales of real estate, net			$ 3,684
Impairment of real estate recognized during the year				0
Senior Living Management Grand Maitland | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property			1						1
Net Real Estate Investment			$ 3,335						$ 3,335
Straight line rent adjustments			256
Genesis
Real Estate [Line Items]
Proceeds from sales of real estate			3,723
Gains/Impairment on sales of real estate, net			$ 2,211
Impairment of real estate recognized during the year				$ 0
Genesis | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Real Estate [Line Items]
Properties | property			1						1
Net Real Estate Investment			$ 1,677						$ 1,677
Straight line rent adjustments			$ (166)
Vitality, Holiday, Chancellor, and Bickford
Real Estate [Line Items]
Impairment of real estate recognized during the year								$ 28,500

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