Segment Reporting (Reconciliation of Capital Expenditures by Segment) (Details) - Operating Segments - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Capital expenditures	$ 19,071	$ 21,394	$ 16,719
Medical Office Buildings
Segment Reporting Information [Line Items]
Capital expenditures	6,152	8,561	5,705
Seniors Housing Communities
Segment Reporting Information [Line Items]
Capital expenditures	$ 12,919	$ 12,833	$ 11,014

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration