Real Estate Investments - Mortgage Loans (Details) $ in Thousands	9 Months Ended
Sep. 30, 2016 USD ($) state loan item property $ / item	Sep. 30, 2015 USD ($)
Mortgage Loans
Scheduled principal payments received	$ 2,117	$ 4,281
Commitments funded	27,355
Investment Commitment	169,641
Remaining commitment	113,001
Real Estate Investment
Mortgage Loans
Gross Investments	$ 1,292,459
Percentage of Investments	100.00%
Number of Properties \| property	180
Number of states \| state	28
Number of operators \| item	27
Mortgage Loans on Real Estate
Mortgage Loans
Gross Investments	$ 236,707
Percentage of Investments	100.00%
Number of Loans \| loan	16
Number of Properties \| property	36
Number of states \| state	7
Number of operators \| item	10
Interest rate for mortgage loans, low end of range (as a percent)	7.30%
Interest rate for mortgage loans, high end of range (as a percent)	13.90%
Proceeds received from the payoff of a mortgage loan	$ 746	2,487
Scheduled principal payments received	$ 1,371	1,794
Mortgage Loans on Real Estate \| Minimum
Mortgage Loans
General amortization schedule of mortgage loans	20 years
Specified basis points for annual increase in interest rate (as a percent)	0.10%
Mortgage Loans on Real Estate \| Maximum
Mortgage Loans
General amortization schedule of mortgage loans	30 years
Specified basis points for annual increase in interest rate (as a percent)	0.25%
Mortgage Loans secured by skilled nursing centers
Mortgage Loans
Amount funded under loan	$ 19,113	$ 53,427
SNF Beds \| Real Estate Investment
Mortgage Loans
Number of Beds/Units \| item	9,363
SNF Beds \| Mortgage Loans on Real Estate
Mortgage Loans
Number of Beds/Units \| item	3,644
ALF Units \| Real Estate Investment
Mortgage Loans
Number of Beds/Units \| item	5,881
ALF Units \| Mortgage Loans on Real Estate
Mortgage Loans
Number of Beds/Units \| item	270
SNF \| Real Estate Investment
Mortgage Loans
Gross Investments	$ 535,460
Percentage of Investments	41.40%
Number of Properties \| property	69
Investment per Bed/Unit \| $ / item	62.18
SNF \| Mortgage Loans on Real Estate
Mortgage Loans
Gross Investments	$ 222,030
Percentage of Investments	93.80%
Number of Loans \| loan	12
Number of Properties \| property	28
Investment per Bed/Unit \| $ / item	60.93
SNF \| SNF Beds \| Real Estate Investment
Mortgage Loans
Number of Beds/Units \| item	8,611
SNF \| SNF Beds \| Mortgage Loans on Real Estate
Mortgage Loans
Number of Beds/Units \| item	3,644
ALF \| Real Estate Investment
Mortgage Loans
Gross Investments	$ 681,365
Percentage of Investments	52.70%
Number of Properties \| property	103
Investment per Bed/Unit \| $ / item	121.52
ALF \| Mortgage Loans on Real Estate
Mortgage Loans
Gross Investments	$ 13,468
Percentage of Investments	5.70%
Number of Loans \| loan	3
Number of Properties \| property	8
Investment per Bed/Unit \| $ / item	49.88
ALF \| ALF Units \| Real Estate Investment
Mortgage Loans
Number of Beds/Units \| item	5,607
ALF \| ALF Units \| Mortgage Loans on Real Estate
Mortgage Loans
Number of Beds/Units \| item	270
ROC \| Real Estate Investment
Mortgage Loans
Gross Investments	$ 43,907
Percentage of Investments	3.40%
Number of Properties \| property	7
Investment per Bed/Unit \| $ / item	48.36
ROC \| SNF Beds \| Real Estate Investment
Mortgage Loans
Number of Beds/Units \| item	634
ROC \| ALF Units \| Real Estate Investment
Mortgage Loans
Number of Beds/Units \| item	274
Other \| Real Estate Investment
Mortgage Loans
Gross Investments	$ 10,216
Percentage of Investments	0.80%
Number of Properties \| property	1
Investment per Bed/Unit \| $ / item	78.39
Number of parcels of land \| item	3
Other \| Mortgage Loans on Real Estate
Mortgage Loans
Gross Investments	$ 1,209
Percentage of Investments	0.50%
Number of Loans \| loan	1
Other \| SNF Beds \| Real Estate Investment
Mortgage Loans
Number of Beds/Units \| item	118

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Represents the amount of investment commitments of the entity.

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The cash outflow for the amount of principal advanced against loan commitments.

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Represents the basis points specified for an increase in annual interest rate on mortgage loan receivable.

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Represents the number of parcels of land.

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Represents the proceeds received from the payoff of a mortgage loan.

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Represents the number of operators associated with certain investments.

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Represents the number of states in which the entity has invested.

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Represents the per unit investment in real estate held solely for investment purposes.

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Represents the investments in real estate held solely for investment purposes expressed as a percentage.

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The highest stated interest rate within the mortgage loans included in the loan grouping.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
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The lowest stated interest rate within the mortgage loans included in the loan grouping.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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Indicates the number of mortgages under each classification.

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The number of real estate properties owned as of the balance sheet date.

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The cash inflow from proceeds from sale of receivables arising from the mortgage note on real estate; includes collections on mortgage notes receivable that are not classified as operating cash flows.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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