DESCRIPTION OF BUSINESS (Details)	Mar. 31, 2017 property tenant
Real estate properties
Number of real estate properties	1,300
Number of properties leased	582
Brookdale Senior Living
Real estate properties
Number of properties included in investments in unconsolidated entities	6
Number of properties leased	140
Number of properties included in investments in unconsolidated entities, pursuant to management agreement	1
Kindred
Real estate properties
Number of properties included in investments in unconsolidated entities	1
Number of properties leased	68
Ardent
Real estate properties
Number of properties leased	10
Brookdale Senior Living Inc. and Kindred Healthcare, Inc.
Real estate properties
Concentration risk, number of tenants \| tenant	3
Development Projects
Real estate properties
Number of real estate properties	8
Number of properties included in investments in unconsolidated entities	1
Seniors Housing Communities
Real estate properties
Number of independent third party managed properties	299
Unconsolidated Properties
Real estate properties
Number of properties included in investments in unconsolidated entities, pursuant to management agreement	1

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

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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.

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- Definition

Concentration Risk, Number of Tenants

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- Definition

The number of properties that are managed by the independent third party.

+ References

No definition available.

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- Definition

Number of Properties Included in Investments in Unconsolidated Entities

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- Definition

Number Of Properties Included In Investments In Unconsolidated Entities, Pursuant To Management Agreement

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- Definition

The number of properties owned that are leased to unaffiliated tenants under triple-net lease terms.

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