Real Estate Investments, Net - Lease Amendments (Details) $ in Thousands			3 Months Ended	12 Months Ended
	Dec. 01, 2020 USD ($) facility extension_option	Oct. 01, 2019 USD ($) bed extension_option facility	Sep. 30, 2019 USD ($)	Dec. 31, 2020 USD ($) facility	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Nov. 04, 2019 USD ($) facility	Sep. 01, 2019 USD ($) renewal_option property	Aug. 16, 2019 property	Jul. 15, 2019 property	May 01, 2018
Real Estate [Line Items]
Number of facilities | facility				218
Lease term (in years)	14 years
Number of renewal options | extension_option	2
Lease renewal term (in years)	5 years
Initial annual cash rent				$ 7,598	$ 29,143	$ 9,955
Noble
Real Estate [Line Items]
Number of properties transferred | facility	5
Initial annual cash rent	$ 3,200
Pennant
Real Estate [Line Items]
Number of facilities | facility		11
Number of beds in leased facilities | bed		1,151
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
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
Trillium | Georgia
Real Estate [Line Items]
Properties in terminated master lease | property										1
Properties covered in new master lease | property									1
Accounts and other receivables
Real Estate [Line Items]
Write-off of accounts and straight-line rent receivable			$ 3,800
Skilled Nursing Properties
Real Estate [Line Items]
Initial annual cash rent				$ 6,453	$ 22,909	$ 7,715
Skilled Nursing Properties | Trillium | Ohio
Real Estate [Line Items]
Properties in terminated master lease | property										7
Skilled Nursing Properties | Providence | Ohio
Real Estate [Line Items]
Number of properties transferred | property								4
Ensign Master leases | Ensign
Real Estate [Line Items]
Number of facilities | facility		85		85
Number of beds in leased facilities | bed		8,908
Reduction to contractual annual cash rent as result of spin		$ 7,800
Triple-net master lease | Providence
Real Estate [Line Items]
Lease term (in years)								13 years
Number of renewal options | renewal_option								2
Lease renewal term (in years)								5 years
Annual cash rent increase under amended lease								$ 2,100
Trio Healthcare Master Lease
Real Estate [Line Items]
Lease term (in years)											15 years
Trio Healthcare Master Lease | Trio
Real Estate [Line Items]
Number of facilities | facility							7
Lease term (in years)							13 years
Number of renewal options | facility							2
Lease renewal term (in years)							5 years
Annual cash rent increase under amended lease							$ 4,700