Amount classified as assets attributable to disposal group held for sale or disposed of.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Real Estate Investments, Net (Held for Sale) (Details)	Dec. 31, 2021 USD ($)	Mar. 31, 2021 property	Dec. 31, 2020 USD ($) property	Apr. 30, 2020 property	Jan. 31, 2020 property	Mar. 31, 2019 property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held for sale	$ 0		$ 90,000
Assets held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Land			145,000
Buildings, fixtures and improvements			(55,000)
Assets held for sale			$ 90,000
Seniors Housing Communities \| Assets held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties held for sale \| property				11		1
Seniors Housing Communities \| Assets held for sale \| Michigan
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties held for sale \| property		4	4		14