Real Estate Investments, Net - Lease Amendments (Details) $ in Thousands								3 Months Ended		12 Months Ended
	Sep. 23, 2021 USD ($) facility	Aug. 01, 2021 USD ($) extension_option facility	Jul. 01, 2021 USD ($) facility extension_option	Jun. 01, 2021 USD ($) facility extension_option	Mar. 10, 2021 USD ($)	Dec. 01, 2020 USD ($) extension_option facility	Oct. 01, 2019 USD ($) facility extension_option bed	Sep. 30, 2021	Sep. 30, 2019 USD ($)	Dec. 31, 2021 USD ($) property facility	Dec. 31, 2020 USD ($) property	Dec. 31, 2019 USD ($) property	Nov. 04, 2019 USD ($) facility extension_option	Sep. 01, 2019 USD ($) property extension_option	Aug. 16, 2019 property	Jul. 15, 2019 property
Real Estate [Line Items]
Number of properties | property										10	8	22
Initial annual cash rent										$ 13,103	$ 7,598	$ 29,143
Number of facilities | facility										227
Accounts and other receivables
Real Estate [Line Items]
Write-off of accounts and straight-line rent receivable									$ 3,800
Noble master leases, amended
Real Estate [Line Items]
Number of amended leases | facility	2
Lease amendment deferral	$ 1,800
Lease amendment deferral, percentage of contractual base								0.04
Ensign master lease, amended
Real Estate [Line Items]
Lease term (in years)		17 years
Number of renewal options | extension_option		3
Lease renewal term (in years)		5 years
Annual cash rent increase under amended lease		$ 2,200
GAAP rent increase		$ 2,500
Ensign amended triple-net master lease
Real Estate [Line Items]
Lease term (in years)				15 years
Number of renewal options | extension_option				3
Lease renewal term (in years)				5 years
Initial annual cash rent				$ 2,600
Noble VA master lease, amended
Real Estate [Line Items]
Lease term (in years)			13 years
Number of renewal options | extension_option			2
Lease renewal term (in years)			5 years
Initial annual cash rent			$ 1,000		$ 1,300
Noble triple-net master lease
Real Estate [Line Items]
Lease term (in years)						14 years
Number of renewal options | extension_option						2
Lease renewal term (in years)						5 years
Initial annual cash rent						$ 3,200
Skilled nursing facility
Real Estate [Line Items]
Number of properties | facility		2
Rent prepayment		$ 5,000
Assisted living
Real Estate [Line Items]
Number of properties | property										2	1	1
Initial annual cash rent										$ 0	$ 590	$ 1,031
Skilled nursing properties
Real Estate [Line Items]
Number of properties | property										4	6	17
Initial annual cash rent										$ 4,499	$ 6,453	$ 22,909
Noble | Assisted living
Real Estate [Line Items]
Number of properties | facility	2
Ensign | Ensign master leases
Real Estate [Line Items]
Number of facilities | facility							85			91
Number of beds in leased facilities | bed							8,908
Reduction to contractual annual cash rent as result of spin							$ 7,800
Ensign | Skilled nursing facility
Real Estate [Line Items]
Number of skilled nursing facilities | facility				4
Noble VA | Assisted living
Real Estate [Line Items]
Number of properties transferred | facility			2			5
Pennant
Real Estate [Line Items]
Lease term (in years)							15 years
Number of renewal options | extension_option							2
Lease renewal term (in years)							5 years
Initial annual cash rent							$ 7,800
Number of facilities | facility							11
Number of beds in leased facilities | bed							1,151
Trillium | Iowa
Real Estate [Line Items]
Properties in terminated master lease | property																10
Properties covered in new master lease | property															10
Trillium | Ohio
Real Estate [Line Items]
Properties in terminated master lease | property														7		7
Trillium | Georgia
Real Estate [Line Items]
Properties in terminated master lease | property																1
Properties covered in new master lease | property															1
Trillium | Skilled nursing properties | Ohio
Real Estate [Line Items]
Properties in terminated master lease | property																7
Providence | Triple-net master lease
Real Estate [Line Items]
Lease term (in years)														13 years
Number of renewal options | extension_option														2
Lease renewal term (in years)														5 years
Annual cash rent increase under amended lease														$ 2,100
Providence | Skilled nursing properties | Ohio
Real Estate [Line Items]
Number of properties transferred | property														4
Trio | Trio master lease, amended
Real Estate [Line Items]
Lease term (in years)													13 years
Number of renewal options | extension_option													2
Lease renewal term (in years)													5 years
Annual cash rent increase under amended lease													$ 4,700
Number of facilities | facility													7