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Real Estate (New Real Estate Investments) (Details) | 12 Months Ended
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Dec. 31, 2019 USD ($) properties | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Real Estate Investments During The Period | $ 274,457,000 |  |
Payments to Acquire Real Estate | $ 219,187,000 | $ 131,758,000 | $ 157,214,000
Wingate Healthcare [Member] |  |  |
Number Of Real Estate Properties Acquired | properties | 1 |  |
Real Estate Investments During The Period | $ 52,200,000 |  |
Payments to Acquire Real Estate | $ 50,300,000 |  |
Holiday Acquisition Holdings [Member] |  |  |
Number Of Real Estate Properties Acquired | properties | 1 |  |
Bickford Senior Living [Member] |  |  |
Number Of Real Estate Properties Acquired | properties | 1 |  |
Discovery Senior Living [Member] |  |  |
Number Of Real Estate Properties Acquired | properties | 6 |  |
Real Estate Investments During The Period | $ 127,917,000 |  |
Cappella Living Solutions [Member] |  |  |
Number Of Real Estate Properties Acquired | properties | 1 |  |
Payments to Acquire Real Estate | $ 7,600,000 |  |
41 Management [Member] |  |  |
Number Of Real Estate Properties Acquired | properties | 1 |  |
Payments to Acquire Real Estate | $ 9,340,000 |  |
April 2019 [Member] | Comfort Care Senior Living [Member] |  |  |
Number Of Real Estate Properties Acquired | properties | 1 |  |
Real Estate Investments During The Period | $ 10,800,000 |  |
Payments to Acquire Real Estate | $ 9,560,000 |  |
May 2019 [Member] | Comfort Care Senior Living [Member] |  |  |
Number Of Real Estate Properties Acquired | properties | 1 |  |
Real Estate Investments During The Period | $ 13,500,000 |  |
Gurnee, IL [Member] | Bickford Senior Living [Member] |  |  |
Payments to Acquire Real Estate | $ 15,100,000 |  |

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- Definition The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner. + References 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=118932676&loc=d3e3213-108585 + Details
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