BUSINESS DEVELOPMENTS AND OTHER SIGNIFICANT TRANSACTIONS - Narrative (Details) $ in Thousands			12 Months Ended
	Dec. 01, 2018 USD ($)	Oct. 01, 2018 center extension	Dec. 31, 2018 USD ($)	Sep. 01, 2019 center	Jun. 30, 2019 facility center	May 22, 2019 center bed	May 13, 2019 center	Apr. 30, 2019 center	Mar. 31, 2019 center
Business Acquisition [Line Items]
Number of nursing center facilities terminated					10	10
Number of skilled nursing beds terminated | bed						885
Number of skilled nursing centers participating in QIPP							4	11	1
Number of nursing center facilities leased		34			57
Number of skilled nursing centers under lease		23
Operating lease, initial term		12 years
Number of lease extensions allowed | extension		2
Lease extension period		10 years
Annual lease fixed escalators, percent		2.15%
Kentucky Properties
Business Acquisition [Line Items]
Proceeds from sale of assets | $	$ 18,700
Carrying value of centers | $			$ 13,331
Gain on disposition of assets | $			$ 4,825
Omega Healthcare Investors Inc
Business Acquisition [Line Items]
Number of nursing center facilities leased		11
Forecast
Business Acquisition [Line Items]
Number of skilled nursing centers participating in QIPP				12