SUMMARIZED CONSOLIDATING INFORMATION - Consolidating Statement of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 358,543	$ 135,789	$ 175,928
Cash flows from investing activities:
Acquisition of real estate	(261,511)	(419,905)	(153,579)
Cash received in CCP Merger	0	77,859	0
Origination and fundings of loans receivable	(50,731)	(17,239)	(9,675)
Origination and fundings of preferred equity investments	(5,313)	(2,749)	(7,348)
Additions to real estate	(27,697)	(6,954)	(1,003)
Repayments of loans receivable	51,789	32,430	215,962
Repayments of preferred equity investments	6,870	3,755	0
Investment in unconsolidated joint venture	(354,461)	0	0
Net proceeds from sales of real estate	382,560	150,243	98,006
Investment in subsidiary			0
Distribution from subsidiaries	0	0	0
Intercompany financing	0	0	0
Net cash (used in) provided by investing activities	(258,494)	(182,560)	142,363
Cash flows from financing activities:
Net borrowings from revolving credit facility		253,000
Net repayments of revolving credit facility	(17,000)		(229,000)
Proceeds from term loans	0	181,000	69,360
Principal payments on secured debt	(140,338)	(4,145)	(14,768)
Payments of deferred financing costs	(352)	(15,337)	(5,937)
Payment of contingent consideration	0	(382)	0
Distributions to noncontrolling interests	(142)	(30)	0
Issuance of common stock, net	(499)	366,800	(1,289)
Preferred stock redemption	(143,750)	0	0
Dividends paid on common and preferred stock	(325,220)	(182,089)	(119,264)
Contribution from parent			0
Distribution to parent	0	0	0
Intercompany financing	0	0	0
Net cash (used in) provided by financing activities	(627,301)	598,817	(300,898)
Net (decrease) increase in cash, cash equivalents and restricted cash	(527,252)	552,046	17,393
Effect of foreign currency translation on cash, cash equivalents and restricted cash	(539)	738	25
Cash, cash equivalents and restricted cash, beginning of period	587,449	34,665	17,247
Cash, cash equivalents and restricted cash, end of period	59,658	587,449	34,665
Elimination
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0	0
Cash flows from investing activities:
Acquisition of real estate	0	0	0
Cash received in CCP Merger		0
Origination and fundings of loans receivable	0	0	0
Origination and fundings of preferred equity investments	0	0	0
Additions to real estate	0	0	0
Repayments of loans receivable	0	0	0
Repayments of preferred equity investments	0	0
Investment in unconsolidated joint venture	0
Net proceeds from sales of real estate	0	0	0
Investment in subsidiary			400
Distribution from subsidiaries	(10,914)	(4,948)	(12,808)
Intercompany financing	617,098	80,665	(142,358)
Net cash (used in) provided by investing activities	606,184	75,717	(154,766)
Cash flows from financing activities:
Net borrowings from revolving credit facility		0
Net repayments of revolving credit facility	0		0
Proceeds from term loans		0	0
Principal payments on secured debt	0	0	0
Payments of deferred financing costs	0	0	0
Payment of contingent consideration		0
Distributions to noncontrolling interests	0	0
Issuance of common stock, net	0	0	0
Preferred stock redemption	0
Dividends paid on common and preferred stock	0	0	0
Contribution from parent			(400)
Distribution to parent	10,914	4,948	12,808
Intercompany financing	(617,098)	(80,665)	142,358
Net cash (used in) provided by financing activities	(606,184)	(75,717)	154,766
Net (decrease) increase in cash, cash equivalents and restricted cash	0	0	0
Effect of foreign currency translation on cash, cash equivalents and restricted cash	0	0	0
Cash, cash equivalents and restricted cash, beginning of period	0	0	0
Cash, cash equivalents and restricted cash, end of period	0	0	0
Parent Company | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	310,442	59,640	153,577
Cash flows from investing activities:
Acquisition of real estate	0	0	0
Cash received in CCP Merger		77,859
Origination and fundings of loans receivable	0	0	0
Origination and fundings of preferred equity investments	0	0	0
Additions to real estate	(40)	(181)	(124)
Repayments of loans receivable	0	0	0
Repayments of preferred equity investments	0	0
Investment in unconsolidated joint venture	0
Net proceeds from sales of real estate	0	0	0
Investment in subsidiary			(200)
Distribution from subsidiaries	5,457	2,474	6,404
Intercompany financing	(317,225)	168,999	(23,484)
Net cash (used in) provided by investing activities	(311,808)	249,151	(17,404)
Cash flows from financing activities:
Net borrowings from revolving credit facility		0
Net repayments of revolving credit facility	0		0
Proceeds from term loans		0	0
Principal payments on secured debt	0	0	0
Payments of deferred financing costs	0	0	0
Payment of contingent consideration		0
Distributions to noncontrolling interests	0	0
Issuance of common stock, net	(499)	366,800	(1,289)
Preferred stock redemption	(143,750)
Dividends paid on common and preferred stock	(325,220)	(182,089)	(119,264)
Contribution from parent			0
Distribution to parent	0	0	0
Intercompany financing	0	0	0
Net cash (used in) provided by financing activities	(469,469)	184,711	(120,553)
Net (decrease) increase in cash, cash equivalents and restricted cash	(470,835)	493,502	15,620
Effect of foreign currency translation on cash, cash equivalents and restricted cash	0	0	0
Cash, cash equivalents and restricted cash, beginning of period	511,670	18,168	2,548
Cash, cash equivalents and restricted cash, end of period	40,835	511,670	18,168
Operating Partnership | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0	0
Cash flows from investing activities:
Acquisition of real estate	0	0	0
Cash received in CCP Merger		0
Origination and fundings of loans receivable	0	0	0
Origination and fundings of preferred equity investments	0	0	0
Additions to real estate	0	0	0
Repayments of loans receivable	0	0	0
Repayments of preferred equity investments	0	0
Investment in unconsolidated joint venture	0
Net proceeds from sales of real estate	0	0	0
Investment in subsidiary			(200)
Distribution from subsidiaries	5,457	2,474	6,404
Intercompany financing	(299,873)	(249,664)	165,842
Net cash (used in) provided by investing activities	(294,416)	(247,190)	172,046
Cash flows from financing activities:
Net borrowings from revolving credit facility		253,000
Net repayments of revolving credit facility	(17,000)		(229,000)
Proceeds from term loans		181,000	45,000
Principal payments on secured debt	0	0	0
Payments of deferred financing costs	(352)	(15,337)	(5,326)
Payment of contingent consideration		0
Distributions to noncontrolling interests	0	0
Issuance of common stock, net	0	0	0
Preferred stock redemption	0
Dividends paid on common and preferred stock	0	0	0
Contribution from parent			200
Distribution to parent	(5,457)	(2,474)	(6,404)
Intercompany financing	317,225	(168,999)	23,484
Net cash (used in) provided by financing activities	294,416	247,190	(172,046)
Net (decrease) increase in cash, cash equivalents and restricted cash	0	0	0
Effect of foreign currency translation on cash, cash equivalents and restricted cash	0	0	0
Cash, cash equivalents and restricted cash, beginning of period	0	0	0
Cash, cash equivalents and restricted cash, end of period	0	0	0
Sabra Capital Corporation | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0	0
Cash flows from investing activities:
Acquisition of real estate	0	0	0
Cash received in CCP Merger		0
Origination and fundings of loans receivable	0	0	0
Origination and fundings of preferred equity investments	0	0	0
Additions to real estate	0	0	0
Repayments of loans receivable	0	0	0
Repayments of preferred equity investments	0	0
Investment in unconsolidated joint venture	0
Net proceeds from sales of real estate	0	0	0
Investment in subsidiary			0
Distribution from subsidiaries	0	0	0
Intercompany financing	0	0	0
Net cash (used in) provided by investing activities	0	0	0
Cash flows from financing activities:
Net borrowings from revolving credit facility		0
Net repayments of revolving credit facility	0		0
Proceeds from term loans		0	0
Principal payments on secured debt	0	0	0
Payments of deferred financing costs	0	0	0
Payment of contingent consideration		0
Distributions to noncontrolling interests	0	0
Issuance of common stock, net	0	0	0
Preferred stock redemption	0
Dividends paid on common and preferred stock	0	0	0
Contribution from parent			0
Distribution to parent	0	0	0
Intercompany financing	0	0	0
Net cash (used in) provided by financing activities	0	0	0
Net (decrease) increase in cash, cash equivalents and restricted cash	0	0	0
Effect of foreign currency translation on cash, cash equivalents and restricted cash	0	0	0
Cash, cash equivalents and restricted cash, beginning of period	0	0	0
Cash, cash equivalents and restricted cash, end of period	0	0	0
Combined Guarantor Subsidiaries of 2021 Notes and 2023 Notes | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	1,639	41,085	10,343
Cash flows from investing activities:
Acquisition of real estate	(77,225)	(419,905)	(153,579)
Cash received in CCP Merger		0
Origination and fundings of loans receivable	(6,317)	(1,799)	(9,675)
Origination and fundings of preferred equity investments	(5,313)	(2,749)	(7,348)
Additions to real estate	(6,862)	(2,339)	(502)
Repayments of loans receivable	8,946	12,441	215,962
Repayments of preferred equity investments	6,870	3,755
Investment in unconsolidated joint venture	0
Net proceeds from sales of real estate	284,958	149,849	97,407
Investment in subsidiary			0
Distribution from subsidiaries	0	0	0
Intercompany financing	0	0	0
Net cash (used in) provided by investing activities	205,057	(260,747)	142,265
Cash flows from financing activities:
Net borrowings from revolving credit facility		0
Net repayments of revolving credit facility	0		0
Proceeds from term loans		0	24,360
Principal payments on secured debt	0	0	(10,766)
Payments of deferred financing costs	0	0	(611)
Payment of contingent consideration		(382)
Distributions to noncontrolling interests	0	0
Issuance of common stock, net	0	0	0
Preferred stock redemption	0
Dividends paid on common and preferred stock	0	0	0
Contribution from parent			0
Distribution to parent	0	0	0
Intercompany financing	(238,392)	254,608	(165,175)
Net cash (used in) provided by financing activities	(238,392)	254,226	(152,192)
Net (decrease) increase in cash, cash equivalents and restricted cash	(31,696)	34,564	416
Effect of foreign currency translation on cash, cash equivalents and restricted cash	(335)	63	72
Cash, cash equivalents and restricted cash, beginning of period	37,359	2,732	2,244
Cash, cash equivalents and restricted cash, end of period	5,328	37,359	2,732
Combined Non-Guarantor Subsidiaries of 2021 Notes and 2023 Notes | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	46,462	35,064	12,008
Cash flows from investing activities:
Acquisition of real estate	(184,286)	0	0
Cash received in CCP Merger		0
Origination and fundings of loans receivable	(44,414)	(15,440)	0
Origination and fundings of preferred equity investments	0	0	0
Additions to real estate	(20,795)	(4,434)	(377)
Repayments of loans receivable	42,843	19,989	0
Repayments of preferred equity investments	0	0
Investment in unconsolidated joint venture	(354,461)
Net proceeds from sales of real estate	97,602	394	599
Investment in subsidiary			0
Distribution from subsidiaries	0	0	0
Intercompany financing	0	0	0
Net cash (used in) provided by investing activities	(463,511)	509	222
Cash flows from financing activities:
Net borrowings from revolving credit facility		0
Net repayments of revolving credit facility	0		0
Proceeds from term loans		0	0
Principal payments on secured debt	(140,338)	(4,145)	(4,002)
Payments of deferred financing costs	0	0	0
Payment of contingent consideration		0
Distributions to noncontrolling interests	(142)	(30)
Issuance of common stock, net	0	0	0
Preferred stock redemption	0
Dividends paid on common and preferred stock	0	0	0
Contribution from parent			200
Distribution to parent	(5,457)	(2,474)	(6,404)
Intercompany financing	538,265	(4,944)	(667)
Net cash (used in) provided by financing activities	392,328	(11,593)	(10,873)
Net (decrease) increase in cash, cash equivalents and restricted cash	(24,721)	23,980	1,357
Effect of foreign currency translation on cash, cash equivalents and restricted cash	(204)	675	(47)
Cash, cash equivalents and restricted cash, beginning of period	38,420	13,765	12,455
Cash, cash equivalents and restricted cash, end of period	$ 13,495	$ 38,420	$ 13,765