SUMMARIZED CONDENSED CONSOLIDATING INFORMATION - Condensed Consolidating Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 101,647	$ 31,587
Cash flows from investing activities:
Acquisition of real estate	(172,001)	0
Origination and fundings of loans receivable	(13,232)	(508)
Origination and fundings of preferred equity investments	(928)	(51)
Additions to real estate	(11,539)	(520)
Repayments of loans receivable	28,805	118
Repayments of preferred equity investments	234	0
Investment in unconsolidated JV	(354,461)	0
Net proceeds from the sales of real estate	6,743	0
Distribution from subsidiaries	0	0
Intercompany financing	0	0
Net cash used in investing activities	(516,379)	(961)
Cash flows from financing activities:
Net repayments of revolving credit facility	(30,000)	(9,000)
Principal payments on secured debt	(1,061)	(1,021)
Payments of deferred financing costs	(6)	(109)
Distributions to noncontrolling interests	(37)	0
Issuance of common stock, net	(499)	(3,224)
Dividends paid on common and preferred stock	(82,789)	(29,993)
Distribution to parent	0	0
Intercompany financing	0	0
Net cash used in financing activities	(114,392)	(43,347)
Net decrease in cash, cash equivalents and restricted cash	(529,124)	(12,721)
Effect of foreign currency translation on cash, cash equivalents and restricted cash	(155)	21
Cash, cash equivalents and restricted cash, beginning of period	587,449	34,665
Cash, cash equivalents and restricted cash, end of period	58,170	21,965
Elimination
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Acquisition of real estate	0
Origination and fundings of loans receivable	0	0
Origination and fundings of preferred equity investments	0	0
Additions to real estate	0	0
Repayments of loans receivable	0	0
Repayments of preferred equity investments	0
Investment in unconsolidated JV	0
Net proceeds from the sales of real estate	0
Distribution from subsidiaries	(5,114)	(4,948)
Intercompany financing	947,430	10,941
Net cash used in investing activities	942,316	5,993
Cash flows from financing activities:
Net repayments of revolving credit facility	0	0
Principal payments on secured debt	0	0
Payments of deferred financing costs	0	0
Distributions to noncontrolling interests	0
Issuance of common stock, net	0	0
Dividends paid on common and preferred stock	0	0
Distribution to parent	5,114	4,948
Intercompany financing	(947,430)	(10,941)
Net cash used in financing activities	(942,316)	(5,993)
Net decrease in cash, cash equivalents and restricted cash	0	0
Effect of foreign currency translation on cash, cash equivalents and restricted cash	0	0
Cash, cash equivalents and restricted cash, beginning of period	0	0
Cash, cash equivalents and restricted cash, end of period	0	0
Parent Company | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	97,936	27,886
Cash flows from investing activities:
Acquisition of real estate	0
Origination and fundings of loans receivable	0	0
Origination and fundings of preferred equity investments	0	0
Additions to real estate	(38)	(1)
Repayments of loans receivable	0	0
Repayments of preferred equity investments	0
Investment in unconsolidated JV	0
Net proceeds from the sales of real estate	0
Distribution from subsidiaries	2,557	2,474
Intercompany financing	(488,718)	(10,025)
Net cash used in investing activities	(486,199)	(7,552)
Cash flows from financing activities:
Net repayments of revolving credit facility	0	0
Principal payments on secured debt	0	0
Payments of deferred financing costs	0	0
Distributions to noncontrolling interests	0
Issuance of common stock, net	(499)	(3,224)
Dividends paid on common and preferred stock	(82,789)	(29,993)
Distribution to parent	0	0
Intercompany financing	0	0
Net cash used in financing activities	(83,288)	(33,217)
Net decrease in cash, cash equivalents and restricted cash	(471,551)	(12,883)
Effect of foreign currency translation on cash, cash equivalents and restricted cash	0	0
Cash, cash equivalents and restricted cash, beginning of period	511,670	18,168
Cash, cash equivalents and restricted cash, end of period	40,119	5,285
Operating Partnership | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Acquisition of real estate	0
Origination and fundings of loans receivable	0	0
Origination and fundings of preferred equity investments	0	0
Additions to real estate	0	0
Repayments of loans receivable	0	0
Repayments of preferred equity investments	0
Investment in unconsolidated JV	0
Net proceeds from the sales of real estate	0
Distribution from subsidiaries	2,557	2,474
Intercompany financing	(458,712)	(916)
Net cash used in investing activities	(456,155)	1,558
Cash flows from financing activities:
Net repayments of revolving credit facility	(30,000)	(9,000)
Principal payments on secured debt	0	0
Payments of deferred financing costs	(6)	(109)
Distributions to noncontrolling interests	0
Issuance of common stock, net	0	0
Dividends paid on common and preferred stock	0	0
Distribution to parent	(2,557)	(2,474)
Intercompany financing	488,718	10,025
Net cash used in financing activities	456,155	(1,558)
Net decrease in cash, cash equivalents and restricted cash	0	0
Effect of foreign currency translation on cash, cash equivalents and restricted cash	0	0
Cash, cash equivalents and restricted cash, beginning of period	0	0
Cash, cash equivalents and restricted cash, end of period	0	0
Sabra Capital Corporation | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Acquisition of real estate	0
Origination and fundings of loans receivable	0	0
Origination and fundings of preferred equity investments	0	0
Additions to real estate	0	0
Repayments of loans receivable	0	0
Repayments of preferred equity investments	0
Investment in unconsolidated JV	0
Net proceeds from the sales of real estate	0
Distribution from subsidiaries	0	0
Intercompany financing	0	0
Net cash used in investing activities	0	0
Cash flows from financing activities:
Net repayments of revolving credit facility	0	0
Principal payments on secured debt	0	0
Payments of deferred financing costs	0	0
Distributions to noncontrolling interests	0
Issuance of common stock, net	0	0
Dividends paid on common and preferred stock	0	0
Distribution to parent	0	0
Intercompany financing	0	0
Net cash used in financing activities	0	0
Net decrease in cash, cash equivalents and restricted cash	0	0
Effect of foreign currency translation on cash, cash equivalents and restricted cash	0	0
Cash, cash equivalents and restricted cash, beginning of period	0	0
Cash, cash equivalents and restricted cash, end of period	0	0
Combined Guarantor Subsidiaries | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(55)	1,027
Cash flows from investing activities:
Acquisition of real estate	(172,001)
Origination and fundings of loans receivable	(1,027)	(508)
Origination and fundings of preferred equity investments	(928)	(51)
Additions to real estate	(3,496)	(474)
Repayments of loans receivable	7,491	118
Repayments of preferred equity investments	234
Investment in unconsolidated JV	0
Net proceeds from the sales of real estate	0
Distribution from subsidiaries	0	0
Intercompany financing	0	0
Net cash used in investing activities	(169,727)	(915)
Cash flows from financing activities:
Net repayments of revolving credit facility	0	0
Principal payments on secured debt	0	0
Payments of deferred financing costs	0	0
Distributions to noncontrolling interests	0
Issuance of common stock, net	0	0
Dividends paid on common and preferred stock	0	0
Distribution to parent	0	0
Intercompany financing	134,797	916
Net cash used in financing activities	134,797	916
Net decrease in cash, cash equivalents and restricted cash	(34,985)	1,028
Effect of foreign currency translation on cash, cash equivalents and restricted cash	(72)	14
Cash, cash equivalents and restricted cash, beginning of period	37,359	2,732
Cash, cash equivalents and restricted cash, end of period	2,302	3,774
Combined Non-Guarantor Subsidiaries | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	3,766	2,674
Cash flows from investing activities:
Acquisition of real estate	0
Origination and fundings of loans receivable	(12,205)	0
Origination and fundings of preferred equity investments	0	0
Additions to real estate	(8,005)	(45)
Repayments of loans receivable	21,314	0
Repayments of preferred equity investments	0
Investment in unconsolidated JV	(354,461)
Net proceeds from the sales of real estate	6,743
Distribution from subsidiaries	0	0
Intercompany financing	0	0
Net cash used in investing activities	(346,614)	(45)
Cash flows from financing activities:
Net repayments of revolving credit facility	0	0
Principal payments on secured debt	(1,061)	(1,021)
Payments of deferred financing costs	0	0
Distributions to noncontrolling interests	(37)
Issuance of common stock, net	0	0
Dividends paid on common and preferred stock	0	0
Distribution to parent	(2,557)	(2,474)
Intercompany financing	323,915	0
Net cash used in financing activities	320,260	(3,495)
Net decrease in cash, cash equivalents and restricted cash	(22,588)	(866)
Effect of foreign currency translation on cash, cash equivalents and restricted cash	(83)	7
Cash, cash equivalents and restricted cash, beginning of period	38,420	13,765
Cash, cash equivalents and restricted cash, end of period	$ 15,749	$ 12,906