Significant Accounting Policies Significant Accounting Policies (Schedule of Variable Interest Entities) (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Straight-Line Rent Receivable [Member] | Bickford Senior Living [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	$ 68,433
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	82,741
Straight-Line Rent Receivable [Member] | Senior Living Communities [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	82,035
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	92,457
Straight-Line Rent Receivable [Member] | Senior Living Management [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	26,667
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	26,667
Notes Receivable [Member] | LCS Timber Ridge [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	59,147
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	59,799
Notes Receivable [Member] | Evolve Senior Living [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	9,938
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	9,938
Notes Receivable [Member] | LCS Sagewood [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	97,948
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	178,366
Notes Receivable [Member] | 41 Management [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets	1,388
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	$ 10,800