Real Estate (New Real Estate Investments) (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Land	$ 212,609	$ 220,361
Current Period Real Estate Acquisition
Land	2,001
Buildings and Improvements, Gross	44,849
Real Estate Investments During The Period	46,850
Vizion Health \| Current Period Real Estate Acquisition
Land	1,470
Buildings and Improvements, Gross	38,780
Real Estate Investments During The Period	40,250
Navion Senior Solutions [Member] \| Current Period Real Estate Acquisition
Land	531
Buildings and Improvements, Gross	6,069
Real Estate Investments During The Period	$ 6,600

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6812-107765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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