PRO FORMA FINANCIAL INFORMATION - Narrative (Details) $ in Thousands			3 Months Ended		9 Months Ended
	Aug. 17, 2017 Property	Aug. 17, 2017 direct_financing_lease_property	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Facilitiy	Sep. 30, 2016 USD ($) Facilitiy
Business Acquisition [Line Items]
Acquisition pursuit costs | $			$ 23,299	$ 1,051	$ 29,750	$ 1,222
Series of Individually Immaterial Business Acquisitions [Member] | Skilled Nursing/Transitional Care [Member]
Business Acquisition [Line Items]
Number of acquired properties | Facilitiy					21	1
Series of Individually Immaterial Business Acquisitions [Member] | Senior Housing Facilities [Member]
Business Acquisition [Line Items]
Number of acquired properties | Facilitiy					1	3
Care Capital Properties [Member]
Business Acquisition [Line Items]
Number of acquired properties | Property	330
Acquisition pursuit costs | $			$ 23,300		$ 29,700
Care Capital Properties [Member] | Skilled Nursing/Transitional Care [Member]
Business Acquisition [Line Items]
Number of acquired properties	296	1
Care Capital Properties [Member] | Senior Housing Facilities [Member]
Business Acquisition [Line Items]
Number of acquired properties | Property	13