Significant Accounting Policies Significant Accounting Policies (Schedule of Variable Interest Entities) (Details) $ in Thousands	Jun. 30, 2018 USD ($)
Straight-Line Rent Receivable [Member] \| Bickford / Sycamore [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	$ 46,319
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	75,275
Straight-Line Rent Receivable [Member] \| Senior Living Communities [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	42,105
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	56,108
Straight-Line Rent Receivable [Member] \| East Lake Capital [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	4,151
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	4,151
Straight-Line Rent Receivable [Member] \| Senior Living Management [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	26,531
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	26,531
Straight-Line Rent Receivable [Member] \| Ravn Senior Solutions [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	553
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	553
Straight-Line Rent Receivable [Member] \| Evolve Senior Living [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	9,923
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	9,923
Straight-Line Rent Receivable [Member] \| Comfort Care Senior Living [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	54
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	54
Notes Receivable [Member] \| Life Care Services [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	57,308
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 59,772

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=77990344&loc=d3e5728-111685

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=77990344&loc=d3e5747-111685

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary.

+ References

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