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Number of licensed nursing beds.

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Number of Skilled Nursing Facilities, Held-For-Sale, Not Part Of Discontinued Operations

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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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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In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer.

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Amount of gain (loss) on sale or disposal of an equity method investment.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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BUSINESS DEVELOPMENTS AND OTHER SIGNIFICANT TRANSACTIONS - Narrative (Details)		3 Months Ended			12 Months Ended
	Jul. 01, 2017 USD ($) bed	Mar. 31, 2018 USD ($) facility bed	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)	Jun. 30, 2017 USD ($)
Business Acquisition [Line Items]
Number of licensed nursing beds \| bed		8,456
Number of skilled nursing facilities classified as held for sale \| facility		3
Assets held for sale		$ 13,228,000			$ 0
Cash termination payment		13,713,000	$ 13,743,000
Gain on sale of investment in unconsolidated affiliate		$ 0	733,000
Selma Nursing Centers
Business Acquisition [Line Items]
Number of licensed nursing beds \| bed	103
Purchase Price	$ 8,750,000
Business acquisition, acquisition expenses					140,000
Gain on bargain purchase	$ 925,000				925,000
Unnamed pharmacy joint venture
Business Acquisition [Line Items]
Gain on sale of investment in unconsolidated affiliate			$ 733,000	$ 1,366,000
Trend Health and Rehab of Carthage, LLC (Trend Health)
Business Acquisition [Line Items]
Cash termination payment					$ 250,000
Mortgage term loan \| Amended and restated credit agreement \| Mortgage loan \| Selma Nursing Centers
Business Acquisition [Line Items]
Increase to credit facility limit						$ 7,500,000