SUMMARIZED CONSOLIDATING INFORMATION - Consolidating Statement of Cash Flows (Details) - USD ($) $ in Thousands		12 Months Ended
	Mar. 21, 2013	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities		$ 133,486	$ 176,739	$ 121,101
Cash flows from investing activities:
Acquisition of real estate		(419,905)	(153,579)	(461,330)
Cash received in CCP Merger		77,859	0	0
Origination and fundings of loans receivable		(17,239)	(9,675)	(49,687)
Origination and fundings of preferred equity investments		(2,749)	(7,348)	(12,804)
Additions to real estate		(6,954)	(1,003)	(3,689)
Repayment of loans receivable		32,430	215,962	5,803
Release of contingent consideration held in escrow		0	0	5,240
Repayment of preferred equity investments		3,755	0	0
Net proceeds from sale of real estate		92,731	98,006	27,241
Investment in subsidiary			0	0
Distribution from subsidiaries		0	0	0
Intercompany financing		0	0	0
Net cash (used in) provided by investing activities		(240,072)	142,363	(489,226)
Cash flows from financing activities:
Net proceeds from revolving credit facility		253,000	(229,000)	187,000
Proceeds from term loans		181,000	69,360	73,242
Proceeds from secured debt		0	0	28,735
Principal payments on secured debt		(4,145)	(14,768)	(3,132)
Payments of deferred financing costs		(15,337)	(5,937)	(1,452)
Contributions by noncontrolling interests		0	0	179
Payment of contingent consideration		(382)	0	0
Distributions to noncontrolling interests		(30)	0	0
Issuance of preferred stock	$ 138,300	0
Issuance of common stock, net		366,800	(1,289)	139,403
Dividends paid on common and preferred stock		(182,089)	(119,264)	(109,897)
Contribution from parent			0	0
Distribution to parent		0	0	0
Intercompany financing		0	0	0
Net cash provided by (used in) financing activities		598,817	(300,898)	314,078
Net increase (decrease) in cash and cash equivalents		492,231	18,204	(54,047)
Effect of foreign currency translation on cash and cash equivalents		738	25	(312)
Cash and cash equivalents, beginning of period		25,663	7,434	61,793
Cash and cash equivalents, end of period		518,632	25,663	7,434
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
Repayment of loans receivable		0	0	0
Release of contingent consideration held in escrow				0
Repayment of preferred equity investments		0
Net proceeds from sale of real estate		0	0	0
Investment in subsidiary			400	828
Distribution from subsidiaries		(4,948)	(12,808)	(7,030)
Intercompany financing		80,665	(142,358)	588,536
Net cash (used in) provided by investing activities		75,717	(154,766)	582,334
Cash flows from financing activities:
Net proceeds from revolving credit facility		0	0	0
Proceeds from term loans		0	0	0
Proceeds from secured debt				0
Principal payments on secured debt		0	0	0
Payments of deferred financing costs		0	0	0
Contributions by noncontrolling interests				0
Payment of contingent consideration		0
Distributions to noncontrolling interests		0
Issuance of preferred stock		0
Issuance of common stock, net		0	0	0
Dividends paid on common and preferred stock		0	0	0
Contribution from parent			(400)	(828)
Distribution to parent		4,948	12,808	7,030
Intercompany financing		(80,665)	142,358	(588,536)
Net cash provided by (used in) financing activities		(75,717)	154,766	(582,334)
Net increase (decrease) in cash and cash equivalents		0	0	0
Effect of foreign currency translation on cash and cash equivalents		0	0	0
Cash and cash equivalents, beginning of period		0	0	0
Cash and cash equivalents, end of period		0	0	0
Parent Company | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities		59,640	153,577	112,291
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		(181)	(124)	(34)
Repayment of loans receivable		0	0	0
Release of contingent consideration held in escrow				0
Repayment of preferred equity investments		0
Net proceeds from sale of real estate		0	0	0
Investment in subsidiary			(200)	(414)
Distribution from subsidiaries		2,474	6,404	3,515
Intercompany financing		168,999	(23,484)	(200,884)
Net cash (used in) provided by investing activities		249,151	(17,404)	(197,817)
Cash flows from financing activities:
Net proceeds from revolving credit facility		0	0	0
Proceeds from term loans		0	0	0
Proceeds from secured debt				0
Principal payments on secured debt		0	0	0
Payments of deferred financing costs		0	0	0
Contributions by noncontrolling interests				0
Payment of contingent consideration		0
Distributions to noncontrolling interests		0
Issuance of preferred stock		0
Issuance of common stock, net		366,800	(1,289)	139,403
Dividends paid on common and preferred stock		(182,089)	(119,264)	(109,897)
Contribution from parent			0	0
Distribution to parent		0	0	0
Intercompany financing		0	0	0
Net cash provided by (used in) financing activities		184,711	(120,553)	29,506
Net increase (decrease) in cash and cash equivalents		493,502	15,620	(56,020)
Effect of foreign currency translation on cash and cash equivalents		0	0	(231)
Cash and cash equivalents, beginning of period		18,168	2,548	58,799
Cash and cash equivalents, end of period		511,670	18,168	2,548
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
Repayment of loans receivable		0	0	0
Release of contingent consideration held in escrow				0
Repayment of preferred equity investments		0
Net proceeds from sale of real estate		0	0	0
Investment in subsidiary			(200)	(414)
Distribution from subsidiaries		2,474	6,404	3,515
Intercompany financing		(249,664)	165,842	(387,652)
Net cash (used in) provided by investing activities		(247,190)	172,046	(384,551)
Cash flows from financing activities:
Net proceeds from revolving credit facility		253,000	(229,000)	187,000
Proceeds from term loans		181,000	45,000	0
Proceeds from secured debt				0
Principal payments on secured debt		0	0	0
Payments of deferred financing costs		(15,337)	(5,326)	(232)
Contributions by noncontrolling interests				0
Payment of contingent consideration		0
Distributions to noncontrolling interests		0
Issuance of preferred stock		0
Issuance of common stock, net		0	0	0
Dividends paid on common and preferred stock		0	0	0
Contribution from parent			200	414
Distribution to parent		(2,474)	(6,404)	(3,515)
Intercompany financing		(168,999)	23,484	200,884
Net cash provided by (used in) financing activities		247,190	(172,046)	384,551
Net increase (decrease) in cash and cash equivalents		0	0	0
Effect of foreign currency translation on cash and cash equivalents		0	0	0
Cash and cash equivalents, beginning of period		0	0	0
Cash and cash equivalents, 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
Repayment of loans receivable		0	0	0
Release of contingent consideration held in escrow				0
Repayment of preferred equity investments		0
Net proceeds from sale of real estate		0	0	0
Investment in subsidiary			0	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 proceeds from revolving credit facility		0	0	0
Proceeds from term loans		0	0	0
Proceeds from secured debt				0
Principal payments on secured debt		0	0	0
Payments of deferred financing costs		0	0	0
Contributions by noncontrolling interests				0
Payment of contingent consideration		0
Distributions to noncontrolling interests		0
Issuance of preferred stock		0
Issuance of common stock, net		0	0	0
Dividends paid on common and preferred stock		0	0	0
Contribution from parent			0	0
Distribution to parent		0	0	0
Intercompany financing		0	0	0
Net cash provided by (used in) financing activities		0	0	0
Net increase (decrease) in cash and cash equivalents		0	0	0
Effect of foreign currency translation on cash and cash equivalents		0	0	0
Cash and cash equivalents, beginning of period		0	0	0
Cash and cash equivalents, 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		61,744	12,074	820
Cash flows from investing activities:
Acquisition of real estate		(419,905)	(153,579)	(450,082)
Cash received in CCP Merger		0
Origination and fundings of loans receivable		(1,799)	(9,675)	(49,687)
Origination and fundings of preferred equity investments		(2,749)	(7,348)	(12,804)
Additions to real estate		(2,339)	(502)	(1,286)
Repayment of loans receivable		12,441	215,962	5,803
Release of contingent consideration held in escrow				5,240
Repayment of preferred equity investments		3,755
Net proceeds from sale of real estate		92,337	97,407	27,241
Investment in subsidiary			0	0
Distribution from subsidiaries		0	0	0
Intercompany financing		0	0	0
Net cash (used in) provided by investing activities		(318,259)	142,265	(475,575)
Cash flows from financing activities:
Net proceeds from revolving credit facility		0	0	0
Proceeds from term loans		0	24,360	73,242
Proceeds from secured debt				0
Principal payments on secured debt		0	(10,766)	0
Payments of deferred financing costs		0	(611)	(740)
Contributions by noncontrolling interests				0
Payment of contingent consideration		(382)
Distributions to noncontrolling interests		0
Issuance of preferred stock		0
Issuance of common stock, net		0	0	0
Dividends paid on common and preferred stock		0	0	0
Contribution from parent			0	0
Distribution to parent		0	0	0
Intercompany financing		254,608	(165,175)	402,745
Net cash provided by (used in) financing activities		254,226	(152,192)	475,247
Net increase (decrease) in cash and cash equivalents		(2,289)	2,147	492
Effect of foreign currency translation on cash and cash equivalents		63	72	(36)
Cash and cash equivalents, beginning of period		2,675	456	0
Cash and cash equivalents, end of period		449	2,675	456
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		12,102	11,088	7,990
Cash flows from investing activities:
Acquisition of real estate		0	0	(11,248)
Cash received in CCP Merger		0
Origination and fundings of loans receivable		(15,440)	0	0
Origination and fundings of preferred equity investments		0	0	0
Additions to real estate		(4,434)	(377)	(2,369)
Repayment of loans receivable		19,989	0	0
Release of contingent consideration held in escrow				0
Repayment of preferred equity investments		0
Net proceeds from sale of real estate		394	599	0
Investment in subsidiary			0	0
Distribution from subsidiaries		0	0	0
Intercompany financing		0	0	0
Net cash (used in) provided by investing activities		509	222	(13,617)
Cash flows from financing activities:
Net proceeds from revolving credit facility		0	0	0
Proceeds from term loans		0	0	0
Proceeds from secured debt				28,735
Principal payments on secured debt		(4,145)	(4,002)	(3,132)
Payments of deferred financing costs		0	0	(480)
Contributions by noncontrolling interests				179
Payment of contingent consideration		0
Distributions to noncontrolling interests		(30)
Issuance of preferred stock		0
Issuance of common stock, net		0	0	0
Dividends paid on common and preferred stock		0	0	0
Contribution from parent			200	414
Distribution to parent		(2,474)	(6,404)	(3,515)
Intercompany financing		(4,944)	(667)	(15,093)
Net cash provided by (used in) financing activities		(11,593)	(10,873)	7,108
Net increase (decrease) in cash and cash equivalents		1,018	437	1,481
Effect of foreign currency translation on cash and cash equivalents		675	(47)	(45)
Cash and cash equivalents, beginning of period		4,820	4,430	2,994
Cash and cash equivalents, end of period		$ 6,513	$ 4,820	$ 4,430