Omega Healthcare Investors (OHI) 10-Q 3 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 29, 2021
Document and Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Entity Registrant Name	OMEGA HEALTHCARE INVESTORS, INC.
Entity Central Index Key	0000888491
Current Fiscal Year End Date	--12-31
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	MD
Entity File Number	1-11316
Entity Tax Identification Number	38-3041398
Entity Common Stock Shares Outstanding		238,875,381
Amendment Flag	false
Document Fiscal Period Focus	Q2
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Address, Address Line One	303 International Circle, Suite 200
Entity Address, City or Town	Hunt Valley
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	21030
City Area Code	410
Local Phone Number	427-1700
Title of 12(b) Security	Common Stock
Trading Symbol	OHI
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Real estate properties
Real estate investments	$ 9,228,332	$ 8,702,154
Less accumulated depreciation	(2,139,100)	(1,996,914)
Real estate investments - net	7,089,232	6,705,240
Investments in direct financing leases - net	10,807	10,764
Mortgage notes receivable - net	857,162	885,313
Total	7,957,201	7,601,317
Other investments - net	458,664	467,442
Investments in unconsolidated joint ventures	197,912	200,638
Assets held for sale	35,335	81,452
Total investments	8,649,112	8,350,849
Cash and cash equivalents	100,824	163,535
Restricted cash	3,736	4,023
Contractual receivables - net	10,948	10,408
Other receivables and lease inducements	229,509	234,666
Goodwill	651,697	651,737
Other assets	113,228	82,231
Total assets	9,759,054	9,497,449
LIABILITIES AND EQUITY
Revolving line of credit		101,158
Secured borrowings	365,831	369,524
Senior notes and other unsecured borrowings - net	4,906,734	4,698,570
Accrued expenses and other liabilities	266,818	280,824
Deferred income taxes	9,645	10,766
Total liabilities	5,549,028	5,460,842
Equity:
Preferred stock $1.00 par value authorized - 20,000 shares, issued and outstanding - none
Common stock $.10 par value authorized - 350,000 shares, issued and outstanding - 237,570 shares as of June 30, 2021 and 231,199 as of December 31, 2020	23,756	23,119
Additional paid-in capital	6,377,238	6,152,887
Cumulative net earnings	2,839,236	2,594,735
Cumulative dividends paid	(5,232,692)	(4,916,097)
Accumulated other comprehensive income (loss)	4,523	(12,768)
Total stockholders' equity	4,012,061	3,841,876
Noncontrolling interest	197,965	194,731
Total equity	4,210,026	4,036,607
Total liabilities and equity	$ 9,759,054	$ 9,497,449

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized	350,000,000	350,000,000
Common stock, shares issued	237,570,000	231,199,000
Common stock, shares outstanding	237,570,000	231,199,000

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue
Rental income	$ 220,955	$ 221,532	$ 458,716	$ 443,032
Income from direct financing leases	257	259	515	517
Mortgage interest income	24,021	21,680	47,646	41,365
Other investment income	11,813	10,932	23,465	21,584
Miscellaneous income	374	1,992	846	2,921
Total revenues	257,420	256,395	531,188	509,419
Expenses
Depreciation and amortization	85,799	83,586	170,648	166,229
General and administrative	15,200	13,969	31,352	29,892
Real estate taxes	3,001	3,655	5,730	7,321
Acquisition, merger and transition related costs		251	1,814	26
Impairment on real estate properties	8,822	11,988	37,511	15,627
Recovery on direct financing leases	(164)	(752)	(717)	(752)
Provision for credit losses	3,536	15	2,512	1,501
Interest expense	58,879	55,252	117,400	110,454
Total expenses	175,073	167,964	366,250	330,298
Other income (expense)
Other income (expense) - net	540	142	771	(662)
Loss on debt extinguishment	(395)		(30,065)
Gain on assets sold - net	4,123	12,843	104,465	14,681
Total other income	4,268	12,985	75,171	14,019
Income before income tax expense and income from unconsolidated joint ventures	86,615	101,416	240,109	193,140
Income tax expense	(939)	(858)	(1,897)	(1,863)
Income from unconsolidated joint ventures	1,187	1,402	13,017	2,962
Net income	86,863	101,960	251,229	194,239
Net income attributable to noncontrolling interest	(2,340)	(2,653)	(6,728)	(5,017)
Net income available to common stockholders	$ 84,523	$ 99,307	$ 244,501	$ 189,222
Basic:
Net income available to common stockholders	$ 0.36	$ 0.44	$ 1.04	$ 0.83
Diluted:
Net income	$ 0.36	$ 0.43	$ 1.04	$ 0.83

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 86,863	$ 101,960	$ 251,229	$ 194,239
Other comprehensive income (loss):
Foreign currency translation	940	(972)	2,126	(19,743)
Cash flow hedges	(20,167)	513	15,634	(7,331)
Total other comprehensive income (loss)	(19,227)	(459)	17,760	(27,074)
Comprehensive income	67,636	101,501	268,989	167,165
Comprehensive income attributable to noncontrolling interest	(1,820)	(2,641)	(7,197)	(4,320)
Comprehensive income attributable to common stockholders	$ 65,816	$ 98,860	$ 261,792	$ 162,845

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total Stockholders' Equity [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Total Stockholders' Equity [Member]Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Total Stockholders' Equity [Member]	Common StockCumulative Effect, Period of Adoption, Adjusted Balance [Member]	Common Stock	Additional Paid-in CapitalCumulative Effect, Period of Adoption, Adjusted Balance [Member]	Additional Paid-in Capital	Cumulative Net Earnings [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Net Earnings [Member]Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Cumulative Net Earnings [Member]	Dividend PaidCumulative Effect, Period of Adoption, Adjusted Balance [Member]	Dividend Paid	Accumulated Other Comprehensive Loss [Member]Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interest [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Noncontrolling Interest [Member]Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Total
Beginning balance at Dec. 31, 2019	$ (28,028)	$ 4,107,400	$ 4,135,428	$ 22,663	$ 22,663	$ 5,992,733	$ 5,992,733	$ (28,028)	$ 2,435,408	$ 2,463,436	$ (4,303,546)	$ (4,303,546)	$ (39,858)	$ (39,858)	$ (757)	$ 200,409	$ 201,166	$ (28,785)	$ 4,307,809	$ 4,336,594
Increase (Decrease) In Stockholders' Equity [Roll Forward]
Stock related compensation			9,258				9,258													9,258
Issuance of common stock			2,293		28		2,265													2,293
Common dividends declared			(307,282)									(307,282)								(307,282)
Vesting/exercising of Omega OP Units			(5,433)				(5,433)										5,433
Conversion and redemption of Omega OP Units to common stock			1,152		3		1,149										(1,152)
Omega OP Units distributions																	(11,851)			(11,851)
Comprehensive (loss) income			(26,377)											(26,377)			(697)			(27,074)
Net income			189,222							189,222							5,017			194,239
Balance , ending at Jun. 30, 2020			3,970,233		22,694		5,999,972			2,624,630		(4,610,828)		(66,235)			197,159			4,167,392
Beginning balance at Mar. 31, 2020			4,021,575		22,686		5,997,561			2,525,323		(4,458,207)		(65,788)			197,070			4,218,645
Increase (Decrease) In Stockholders' Equity [Roll Forward]
Stock related compensation			4,623				4,623													4,623
Issuance of common stock			(195)		5		(200)													(195)
Common dividends declared			(152,621)									(152,621)								(152,621)
Vesting/exercising of Omega OP Units			(2,825)				(2,825)										2,825
Conversion and redemption of Omega OP Units to common stock			816		3		813										(816)
Omega OP Units distributions																	(4,561)			(4,561)
Comprehensive (loss) income			(447)											(447)			(12)			(459)
Net income			99,307							99,307							2,653			101,960
Balance , ending at Jun. 30, 2020			3,970,233		22,694		5,999,972			2,624,630		(4,610,828)		(66,235)			197,159			4,167,392
Beginning balance at Dec. 31, 2020			3,841,876		23,119		6,152,887			2,594,735		(4,916,097)		(12,768)			194,731			4,036,607
Increase (Decrease) In Stockholders' Equity [Roll Forward]
Stock related compensation			11,282				11,282													11,282
Issuance of common stock			224,723		637		224,086													224,723
Common dividends declared			(316,595)									(316,595)								(316,595)
Vesting/exercising of Omega OP Units			(11,370)				(11,370)										11,370
Conversion and redemption of Omega OP Units to common stock			353				353										(353)
Omega OP Units distributions																	(14,980)			(14,980)
Comprehensive (loss) income			17,291											17,291			469			17,760
Net income			244,501							244,501							6,728			251,229
Balance , ending at Jun. 30, 2021			4,012,061		23,756		6,377,238			2,839,236		(5,232,692)		4,523			197,965			4,210,026
Beginning balance at Mar. 31, 2021			3,953,392		23,338		6,226,543			2,754,713		(5,074,432)		23,230			194,938			4,148,330
Increase (Decrease) In Stockholders' Equity [Roll Forward]
Stock related compensation			5,847				5,847													5,847
Issuance of common stock			151,598		418		151,180													151,598
Common dividends declared			(158,260)									(158,260)								(158,260)
Vesting/exercising of Omega OP Units			(6,603)				(6,603)										6,603
Conversion and redemption of Omega OP Units to common stock			271				271										(271)
Omega OP Units distributions																	(5,125)			(5,125)
Comprehensive (loss) income			(18,707)											(18,707)			(520)			(19,227)
Net income			84,523							84,523							2,340			86,863
Balance , ending at Jun. 30, 2021			$ 4,012,061		$ 23,756		$ 6,377,238			$ 2,839,236		$ (5,232,692)		$ 4,523			$ 197,965			$ 4,210,026

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parentheticals) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Increase (Decrease) In Stockholders' Equity [Roll Forward]
Dividend per Common Share	$ 0.67	$ 0.67	$ 1.34	$ 1.34

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Net income	$ 251,229	$ 194,239
Adjustment to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	170,648	166,229
Impairment on real estate properties	37,511	15,627
Recovery on direct financing leases	(717)	(752)
Provision for rental income	20,151	1,205
Provision for credit losses	2,512	1,501
Amortization of deferred financing costs and loss on debt extinguishment	36,038	4,922
Accretion of direct financing leases	24	12
Stock-based compensation expense	11,207	9,258
Gain on assets sold - net	(104,465)	(14,681)
Amortization of acquired in-place leases - net	(7,344)	(4,798)
Effective yield payable (receivable) on mortgage notes	641	(146)
Interest paid-in-kind	(3,546)	(3,838)
Income from unconsolidated joint ventures	(928)	(1,739)
Change in operating assets and liabilities - net:
Contractual receivables	(541)	5,812
Straight-line rent receivables	(25,696)	(5,764)
Lease inducements	2,849	(24,245)
Other operating assets and liabilities	(11,246)	(13,398)
Net cash provided by operating activities	378,327	329,444
Cash flows from investing activities
Acquisition of real estate	(604,939)	(25,935)
Refund of acquisition deposit	2,500
Net proceeds from sale of real estate investments	201,183	56,117
Investments in construction in progress	(19,297)	(46,750)
Proceeds from sale of direct financing lease and related trust	717	14,897
Placement of mortgage loans	(13,436)	(52,653)
Collection of mortgage principal	42,952	2,549
Investments in unconsolidated joint ventures	(10,484)	(1,971)
Distributions from unconsolidated joint ventures in excess of earnings	15,507	482
Capital improvements to real estate investments	(13,312)	(24,374)
Receipts from insurance proceeds	3,493	346
Investments in other investments	(48,554)	(67,692)
Proceeds from other investments	56,527	48,244
Net cash used in investing activities	(387,143)	(96,740)
Cash flows from financing activities
Proceeds from long-term borrowings	2,090,128	762,466
Payments of long-term borrowings	(1,989,561)	(669,704)
Payments of financing related costs	(48,076)
Receipts from dividend reinvestment plan	77,286	3,747
Taxes paid on vested restricted stock	(3,269)	(3,369)
Net proceeds from issuance of common stock	150,706	1,797
Dividends paid	(316,520)	(307,164)
Distributions to Omega OP Unit Holders	(14,980)	(11,851)
Net cash used in financing activities	(54,286)	(224,078)
Effect of foreign currency translation on cash, cash equivalents and restricted cash	104	(441)
(Decrease) increase in cash, cash equivalents and restricted cash	(62,998)	8,185
Cash, cash equivalents and restricted cash at beginning of period	167,558	33,380
Cash, cash equivalents and restricted cash at end of period	$ 104,560	$ 41,565

BASIS OF PRESENTATION AND SIGNI

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES	6 Months Ended
	Jun. 30, 2021
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES [Abstract]
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES	NOTE 1 – BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Business Overview and Organization Omega Healthcare Investors, Inc. (“Omega”) was incorporated in the State of Maryland on March 31, 1992 and has elected to be taxed as a real estate investment trust (“REIT”) for federal income tax purposes. Omega is structured as an umbrella partnership REIT (“UPREIT”) under which all of Omega’s assets are owned directly or indirectly by, and all of Omega’s operations are conducted directly or indirectly through, its operating partnership subsidiary, OHI Healthcare Properties Limited Partnership (“Omega OP”). Unless stated otherwise or the context otherwise requires, the terms “Omega”, the “Company,” “we,” “our” and “us” refer to Omega Healthcare Investors, Inc. and its consolidated subsidiaries, including Omega OP, references to “Parent” refer to Omega Healthcare Investors, Inc. without regard to its consolidated subsidiaries, and references to “Omega OP” mean OHI Healthcare Properties Limited Partnership and its consolidated subsidiaries. Omega has one reportable segment consisting of investments in healthcare-related real estate properties located in the United States (“U.S.”) and the United Kingdom (“U.K.”). Our core business is to provide financing and capital to the long-term healthcare industry with a particular focus on skilled nursing facilities (“SNFs”), assisted living facilities (“ALFs”), and to a lesser extent, independent living facilities (“ILFs”), rehabilitation and acute care facilities (“specialty facilities”) and medical office buildings. Our core portfolio consists of long-term leases and mortgage agreements. All of our leases are “triple-net” leases, which require the operators (we use the term “operator” to refer to our tenants and mortgagors and their affiliates who manage and/or operate our properties) to pay all property-related expenses. Our mortgage revenue derives from fixed rate mortgage loans, which are secured by first mortgage liens on the underlying real estate and personal property of the mortgagor. Our other investment income derives from fixed and variable rate loans to our operators and/or their principals to fund working capital and capital expenditures. These loans, which may be either unsecured or secured by the collateral of the borrower, are classified as other investments. Omega has exclusive control over Omega OP’s day-to-day management pursuant to the partnership agreement governing Omega OP. As of June 30, 2021, Parent owned approximately 97% of the issued and outstanding units of partnership interest in Omega OP (“Omega OP Units”), and other investors owned approximately 3% of the outstanding Omega OP Units. Basis of Presentation The accompanying unaudited consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and do not include all of the information and notes required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements. In our opinion, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. The results of operations for the interim periods reported herein are not necessarily indicative of results to be expected for the full year. These unaudited consolidated financial statements should be read in conjunction with the financial statements and the footnotes thereto included in our latest Annual Report on Form 10-K Omega’s consolidated financial statements include the accounts of (i) Parent, (ii) Omega OP, (iii) all direct and indirect wholly owned subsidiaries of Omega and (iv) other entities in which Omega or Omega OP has a majority voting interest and control. All intercompany transactions and balances have been eliminated in consolidation, and Omega’s net earnings are reduced by the portion of net earnings attributable to noncontrolling interests. Reclassification Certain line items on our Consolidated Balance Sheets, Consolidated Statements of Operations, Consolidated Statements of Changes in Equity and Consolidated Statements of Cash Flows have been reclassified to conform to the current period presentation. Impact of COVID-19 The Company is subject to certain risks and uncertainties affecting the healthcare industry, including those stemming from the novel coronavirus (“COVID-19”) global pandemic described below, which has disproportionately impacted the senior care sector, as well as those stemming from healthcare legislation and changing regulation by federal, state and local governments. Additionally, we are subject to risks and uncertainties as a result of changes affecting operators of nursing home facilities due to the actions of governmental agencies and insurers to limit the rising cost of healthcare services. In addition to experiencing outbreaks of positive cases and deaths of residents and employees during the pandemic, our operators have been required to, and continue to, adapt their operations rapidly throughout the pandemic to manage the spread of the COVID-19 virus as well as the implementation of new treatments and vaccines, and to implement new requirements relating to infection control, staffing levels, personal protective equipment (“PPE”), quality of care, visitation protocols, and reporting, among other regulations, throughout the pandemic while facing staffing shortages that have accelerated during the pandemic and that may impede the delivery of care. It remains uncertain when and to what extent vaccination programs for COVID-19, which have been implemented in most of our facilities, will continue to mitigate the effects of COVID-19 in our facilities, or how effective existing vaccines will be against variants of the COVID-19 virus; the impact of these programs will depend in part on the continued speed, distribution, efficacy and delivery of the vaccine in our facilities, as well as participation levels in vaccination programs among the residents and employees of our operators. In addition to the risks associated with managing the spread of the virus, delivery of the vaccines and care of their patients and residents, many of our operators reported incurring, and may continue to incur, significant cost increases as a result of the COVID-19 pandemic, with dramatic increases for facilities with positive cases. We believe these increases primarily stem from elevated labor costs, in part due to staffing shortages, including the increased use of overtime and bonus pay and reliance on agency staffing, as well as a significant increase in both the cost and usage of PPE, testing equipment and processes and supplies, as well as implementation of new infection control protocols and vaccination programs. In addition, many of our operators have reported experiencing declines, in some cases that are material, in occupancy levels as a result of the pandemic. While these declines on average appear to be stabilizing and even marginally improving in recent months, it remains unclear when demand and occupancy levels will return to pre-COVID-19 levels. We believe these occupancy declines may be in part due to staffing shortages, which in some cases have required operators to limit admissions, as well as COVID-19 related fatalities at our facilities, the delay of SNF placement and/or utilization of alternative care settings for those with lower level of care needs, the suspension and/or postponement of elective hospital procedures, fewer discharges from hospitals to SNFs and higher hospital readmittances from SNFs. We continue to monitor the impact of occupancy declines at many of our operators, and it remains uncertain whether and when demand, staffing and occupancy levels will return to pre-COVID-19 levels. While substantial government support has been allocated to SNFs and to a lesser extent to ALFs, further government support will likely be needed to continue to offset these impacts and it is unclear whether and to what extent such government support has been and will continue to be sufficient and timely to offset these impacts. Further, to the extent the impacts of the pandemic continue or accelerate and are not offset by continued government relief that is sufficient and timely, we anticipate that the operating results of certain of our operators would be materially and adversely affected, some may be unwilling or unable to pay their contractual obligations to us in full or on a timely basis and we may be unable to restructure such obligations on terms as favorable to us as those currently in place. Even if operators are able to avail themselves of government relief to offset some of these costs, they may face challenges in complying with the terms and conditions of government support and may face longer-term adverse impacts to their personnel and business operations from the COVID-19 pandemic, including potential patient litigation and decreased demand for their services, loss of business due to an interruption in their operations, workforce challenges, new regulatory restrictions, or other liabilities related to gathering restrictions, quarantines, reopening plans, vaccine distribution or delivery, spread of infection or other related factors. The extent of the COVID-19 pandemic’s effect on our and our operators’ operational and financial performance will depend on future developments, including the ability to control the spread of the outbreak generally and in our facilities and the delivery and efficacy of and participation in vaccination programs and other treatments for COVID-19, government funds and other support for the senior care sector and the efficacy of other policies and measures that may mitigate the impact of the pandemic, as well as the future demand for needs-based skilled nursing care and senior living facilities, all of which are uncertain and difficult to predict. Due to these uncertainties, we are not able at this time to estimate the effect of these factors on our business, but the adverse impact on our business, results of operations, financial condition and cash flows could be material. Derivative Instruments Cash flow hedges During our normal course of business, we may use certain types of derivative instruments for the purpose of managing interest rate and currency risk. As a matter of policy, we do not use derivatives for trading or speculative purposes. To qualify for hedge accounting, derivative instruments used for risk management purposes must effectively reduce the risk exposure that they are designed to hedge. In addition, at the inception of a qualifying cash flow hedging relationship, the underlying transaction or transactions, must be, and are expected to remain, probable of occurring in accordance with our related assertions. The Company recognizes all derivative instruments, including embedded derivatives required to be bifurcated, as assets or liabilities in the Consolidated Balance Sheets at their fair value which is determined using a market approach and Level 2 inputs. Changes in the fair value of derivative instruments that are not designated in hedging relationships or that do not meet the criteria of hedge accounting are recognized in earnings. For derivatives designated in qualifying cash flow hedging relationships, the gain or loss on the derivative is recognized in accumulated other comprehensive income (“AOCI”) as a separate component of equity and a proportionate amount of gain or loss is allocated to noncontrolling interest, if applicable. We formally document all relationships between hedging instruments and hedged items, as well as our risk-management objectives and strategy for undertaking various hedge transactions. This process includes designating all derivatives that are part of a hedging relationship to specific forecasted transactions as well as recognized liabilities or assets on the Consolidated Balance Sheets. We also assess and document, both at inception of the hedging relationship and on a quarterly basis thereafter, whether the derivatives are highly effective in offsetting the designated risks associated with the respective hedged items. If it is determined that a derivative ceases to be highly effective as a hedge, or that it is probable the underlying forecasted transaction will not occur, we discontinue hedge accounting prospectively and record the appropriate adjustment to earnings based on the current fair value of the derivative. At June 30, 2021 and December 31, 2020, $0.5 million and $1.0 million, respectively, of qualifying cash flow hedges were recorded at fair value in accrued expenses and other liabilities on our Consolidated Balance Sheets. At June 30, 2021 and December 31, 2020, $34.1 million and $17.0 million, respectively, of qualifying cash flow hedges were recorded at fair value in other assets on our Consolidated Balance Sheets. Net investment hedges We are exposed to fluctuations in the British Pound (“GBP”) against its functional currency, the U.S. Dollar (“USD”), relating to our investments in healthcare-related real estate located in the U.K. For derivatives that are designated and qualify as net investment hedges, the gain or loss on the derivative is reported in AOCI as part of the cumulative translation adjustment in our Consolidated Balance Sheets. For nonderivative financial instruments that are designated and qualify as net investment hedges, the foreign currency transaction gain or loss on the nonderivative financial instrument is reported in AOCI as a part of the cumulative translation adjustment in our Consolidated Balance Sheets. Amounts are reclassified out of AOCI into earnings when the hedged net investment is either sold or substantially liquidated. From the issuance date of our GBP borrowings through the prepayment date in March 2021, we used a nonderivative, GBP-denominated term loan and line of credit totaling £174 million to hedge a portion of our net investments in foreign operations. During March 2021 and concurrent with the prepayment of our GBP-denominated term loan and line of credit, we entered into four foreign currency forwards that mature on March 8, 2024 to hedge a portion of our net investments in foreign real estate, effectively replacing the terminated net investment hedge. At June 30, 2021, $0.3 million of qualifying net investment hedges were recorded at fair value in other assets on our Consolidated Balance Sheets.

PROPERTIES AND INVESTMENTS

PROPERTIES AND INVESTMENTS	6 Months Ended
	Jun. 30, 2021
PROPERTIES AND INVESTMENTS [Abstract]
PROPERTIES AND INVESTMENTS	NOTE 2 – PROPERTIES AND INVESTMENTS Leased Property A summary of our investments in real estate properties subject to operating leases is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 2020 ​ ​ (in thousands) ​ Buildings ​ $ 7,424,693 ​ $ 6,961,509 ​ Land ​ 941,672 ​ 883,765 ​ Furniture and equipment ​ 533,169 ​ 518,664 ​ Site improvements ​ 328,765 ​ 308,087 ​ Construction in progress ​ 33 ​ 30,129 ​ Total real estate investments ​ 9,228,332 ​ 8,702,154 ​ Less accumulated depreciation ​ (2,139,100) ​ (1,996,914) ​ Real estate investments – net ​ $ 7,089,232 ​ $ 6,705,240 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ ​ Six Months Ended June 30, ​ ​ 2021 ​ 2020 ​ ​ 2021 ​ 2020 ​ ​ (in thousands) ​ ​ (in thousands) Rental income – operating leases ​ $ 218,247 ​ $ 217,620 ​ ​ $ 453,309 ​ $ 435,960 Variable lease income – operating leases ​ ​ 2,708 ​ ​ 3,912 ​ ​ ​ 5,407 ​ ​ 7,072 Total rental income ​ $ 220,955 ​ $ 221,532 ​ ​ $ 458,716 ​ $ 443,032 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number of ​ ​ ​ Total ​ Initial ​ ​ Facilities Country/ Investment Annual ​ Period ​ SNF ALF Specialty ​ State ​ (in millions) ​ Cash Yield (1) ​ Q1 — 17 7 AZ, CA, FL, IL, NJ, OR, PA, TN, TX, VA, WA ​ $ 511.3 (2) 8.43 % Q1 ​ 6 — — ​ FL ​ ​ 83.1 ​ 9.25 % Total 6 17 7 ​ $ 594.4 ​ ​ (1) The initial annual cash yield reflects the initial annual cash rent divided by the purchase price. (2) On January 20, 2021, we acquired 24 facilities from Healthpeak Properties, Inc. The acquisition involved the assumption of an in-place master lease with Brookdale Senior Living Inc. During the second quarter of 2021, we acquired one parcel of land (not reflected in the table above) for approximately $10.4 million. Asset Sales and Impairments During the first quarter of 2021, we sold 24 facilities subject to operating leases for approximately $188.3 million in net cash proceeds, recognizing a net gain of approximately $100.3 million. In addition, we recorded impairments on four facilities of approximately $28.7 million (three were subsequently reclassified to assets held for sale in the first quarter of 2021). During the second quarter of 2021, we sold six facilities subject to operating leases for approximately $12.9 million in net cash proceeds, recognizing a net gain of approximately $4.1 million. In addition, we recorded impairments on three facilities of approximately $8.8 million (all three were subsequently reclassified to assets held for sale in the second quarter of 2021). Our recorded impairments were primarily the result of decisions to exit certain non-strategic facilities and/or operators. We reduced the net book value of the impaired facilities to their estimated fair values or, with respect to the facilities reclassified to held for sale, to their estimated fair values less costs to sell. To estimate the fair value of the facilities, we utilized a market approach which considered binding sale agreements (a Level 1 input) and/or non-binding offers from unrelated third parties and/or broker quotes (a Level 3 input).

CONTRACTUAL RECEIVABLES AND OTH

CONTRACTUAL RECEIVABLES AND OTHER RECEIVABLES AND LEASE INDUCEMENTS	6 Months Ended
	Jun. 30, 2021
CONTRACTUAL RECEIVABLES AND OTHER RECEIVABLES AND LEASE INDUCEMENTS [Abstract]
CONTRACTUAL RECEIVABLES AND OTHER RECEIVABLES AND LEASE INDUCEMENTS	NOTE 3 – CONTRACTUAL RECEIVABLES AND OTHER RECEIVABLES AND LEASE INDUCEMENTS A summary of our net receivables by type is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 2020 ​ ​ (in thousands) ​ ​ ​ ​ ​ ​ ​ ​ ​ Contractual receivables – net ​ $ 10,948 ​ $ 10,408 ​ ​ ​ ​ ​ ​ ​ ​ ​ Effective yield interest receivables ​ $ 11,554 ​ $ 12,195 ​ Straight-line rent receivables ​ 138,449 ​ 139,046 ​ Lease inducements ​ 79,506 ​ 83,425 ​ Other receivables and lease inducements ​ $ 229,509 ​ $ 234,666 ​ ​ During the first and second quarters of 2021, we wrote-off approximately $2.7 million and $17.4 million, respectively, of straight-line rent receivables to rental income as a result of transitioning one facility and placing two operators on a cash basis due to changes in our evaluation of the collectibility of future rent payments due under the lease agreements. Based on our evaluation of the collectibility of future rent payments due under the lease agreements for the two operators discussed above, we do not believe it is probable that we will be able to collect substantially all rents due. These two operators generated approximately 3% of our total revenues (excluding the impact of straight-line rent receivable write-offs in 2021) for the six months ended June 30, 2021 and 2020. For the six months ended June 30, 2021, we have been unable to collect approximately $3.5 million of contractual rents due from these operators. We have applied $2.5 million of one of the operator’s security deposit funds against their uncollected receivables, which represents one month of contractual rent under the lease agreement. We have subordinated debt to a third party with an outstanding principal balance of $20 million that matures in December 2021 (see Note 13 – Borrowing Arrangements in our Annual Report on Form 10-K

MORTGAGE NOTES RECEIVABLE

MORTGAGE NOTES RECEIVABLE	6 Months Ended
	Jun. 30, 2021
Mortgage Notes Receivable [Abstract]
MORTGAGE NOTES RECEIVABLE	NOTE 4 – MORTGAGE NOTES RECEIVABLE As of June 30, 2021, mortgage notes receivable relate to seven fixed rate mortgage notes on 63 facilities. The mortgage notes are secured by first mortgage liens on the borrowers’ underlying real estate and personal property. The mortgage notes receivable relate to facilities located in seven states that are operated by six independent healthcare operating companies. We monitor compliance with the terms of our mortgages and when necessary have initiated collection, foreclosure and other proceedings with respect to certain outstanding mortgage notes. The principal amounts outstanding of mortgage notes receivable, net of allowances, were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 2020 ​ ​ (in thousands) ​ Mortgage note due 2027; interest at 10.81% ​ $ 112,500 ​ $ 112,500 ​ Mortgage notes due 2029; interest at 10.59% (1) ​ 655,133 ​ 670,015 ​ Other mortgage notes outstanding (2) ​ 122,409 ​ 136,043 ​ Mortgage notes receivable, gross ​ 890,042 ​ 918,558 ​ Allowance for credit losses on mortgage notes receivable ​ (32,880) ​ (33,245) ​ Total mortgages — net ​ $ 857,162 ​ $ 885,313 ​ (1) Approximates the weighted average interest rate on 46 facilities as of June 30, 2021. As of June 30, 2021, the carrying amount includes two mortgages that mature in 2021, a construction mortgage with an outstanding principal balance of $13.9 million and a facility mortgage with an outstanding principal balance of $21.3 million, with the remaining loan balance maturing in 2029. During the second quarter of 2021, one construction mortgage with an original maturity date of 2021 was extended to 2029 and converted into a facility mortgage. (2) Other mortgages outstanding have a weighted average interest rate of 9.38% per annum as of June 30, 2021 and maturity dates ranging from 2023 through 2032 .

OTHER INVESTMENTS

OTHER INVESTMENTS	6 Months Ended
	Jun. 30, 2021
OTHER INVESTMENTS [Abstract]
OTHER INVESTMENTS	NOTE 5 – OTHER INVESTMENTS A summary of our other investments is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 2020 ​ ​ ​ (in thousands) ​ Other investment notes due 2024; interest at 13.13% (1) ​ $ 87,145 $ 83,636 ​ Other investment notes due 2024-2025; interest at 8.12% (1) ​ ​ 56,987 ​ 56,987 ​ Other investment note due 2023; interest at 12.00% ​ 42,603 ​ ​ 49,973 ​ Other investment notes due 2030; interest at 7.00% ​ 174,988 ​ 147,148 ​ Other investment notes outstanding (2) ​ 132,401 ​ 161,155 ​ Total other investments, gross ​ ​ 494,124 ​ ​ 498,899 ​ Allowance for credit losses on other investments ​ ​ (35,460) ​ ​ (31,457) ​ Total other investments — net ​ $ 458,664 ​ $ 467,442 ​ (1) Approximate weighted average interest rate as of June 30, 2021. (2) Other investment notes have a weighted average interest rate of 8.37% as of June 30, 2021 and maturity dates ranging from 2021 through 2028 . ​ Other investment notes due 2024 On March 6, 2018, we amended certain terms of our $48.0 million secured term loan with Genesis Healthcare, Inc. (“Genesis”). The $48.0 million term loan bears interest at a fixed rate of 14% per annum, of which 9% per annum is paid-in-kind and was initially scheduled to mature on July 29, 2020. The maturity date of this loan was extended during the first quarter of 2021 to January 1, 2024. This term loan (and the $16.0 million term loan discussed below) is secured by a first priority lien on and security interest in certain collateral of Genesis. As of June 30, 2021, approximately $68.2 million is outstanding on this term loan. Also on March 6, 2018, we provided Genesis an additional $16.0 million secured term loan bearing interest at a fixed rate of 10% per annum, of which 5% per annum is paid-in-kind, and was initially scheduled to mature on July 29, 2020. The maturity date of this loan was extended during the first quarter of 2021 to January 1, 2024. As of June 30, 2021, approximately $18.9 million is outstanding on this term loan.

ALLOWANCE FOR CREDIT LOSSES

ALLOWANCE FOR CREDIT LOSSES	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
ALLOWANCE FOR CREDIT LOSSES	NOTE 6 – ALLOWANCE FOR CREDIT LOSSES ​ The allowance for credit losses on loans is measured using relevant information about past events, including historical credit loss experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the remaining cash flows over the contractual term of the loans. We elected to disaggregate our financial assets within the scope of Accounting Standards Codification 326 based on the type of financial instrument. These segments were further disaggregated based on our internal credit ratings. We assess our internal credit ratings on a quarterly basis. Our internal credit ratings consider several factors including the collateral and/or security, the performance of borrowers underlying facilities, if applicable, available credit support (e.g., guarantees), borrowings with third parties, and other ancillary business ventures and real estate operations of the borrower. Our internal ratings range between 1 and 7. An internal rating of 1 reflects the lowest likelihood of loss and a 7 reflects the highest likelihood of loss. We have a limited history of incurred losses and consequently have elected to employ external data to perform our expected credit loss calculation. We have elected a probability of default (“PD”) and loss given default (“LGD”) methodology. Our model’s historic inputs consider PD and LGD data for residential care facilities published by the Federal Housing Administration along with Standards & Poor’s one-year global corporate default rates. Our historical loss rates revert to historical averages after 36 periods. Our model’s current conditions and supportable forecasts consider internal credit ratings, current and projected U.S. unemployment rates published by the U.S. Bureau of Labor Statistics and the Federal Reserve Bank of St. Louis and the weighted average life to maturity of the underlying financial asset. As of June 30, 2021, $10.2 million of contractual interest receivable is recorded in contractual receivables – net and $11.6 million of effective yield interest receivables is recorded in other receivables and lease inducements on our Consolidated Balance Sheets, both of which are excluded from our allowance for credit losses. Periodically, the Company may identify an individual loan for impairment. A loan is considered impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due as scheduled according to the contractual terms of the loan agreements. Our assessment of collectibility considers several factors, including, among other things, payment history, the financial strength of the borrower and any guarantors, historical operations and operating trends, current and future economic conditions, expectations of performance (which includes known substantial doubt about an operator’s ability to continue as a going concern) and the value of the underlying collateral of the agreement, if any. Consistent with this definition, all loans on non-accrual status may be deemed impaired. To the extent circumstances improve and the risk of collectibility is diminished, we will return these loans to full accrual status. When we identify a loan impairment, the loan is written down to the present value of the expected future cash flows. In cases where expected future cash flows are not readily determinable, the loan is written down to the fair value of the underlying collateral. We may base our valuation on a loan’s observable market price, if any, or the fair value of collateral, net of sales costs, if the repayment of the loan is expected to be provided solely by the sale of the collateral. A rollforward of our allowance for credit losses for the six months ended June 30, 2021 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment ​ Financial Statement Line Item Allowance for Credit Loss as of December 31, 2020 Provision (recovery) for Credit Loss for the three months ended June 30, 2021 Write-offs charged against allowance for the three months ended June 30, 2021 Provision (recovery) for Credit Loss for the six months ended June 30, 2021 Write-offs charged against allowance for the six months ended June 30, 2021 Allowance for Credit Loss as of June 30, 2021 ​ ​ ​ (in thousands) Segment A-4 ​ Mortgage Notes Receivable $ 26,865 $ 793 $ - $ (120) $ - $ 26,745 Segment B-3 ​ Mortgage Notes Receivable ​ 954 ​ 61 ​ - ​ 23 ​ - ​ 977 Segment C-5 ​ Mortgage Notes Receivable ​ 433 ​ (108) ​ - ​ (215) ​ - ​ 218 Segment E-6 ​ Mortgage Notes Receivable ​ 4,905 ​ - ​ - ​ - ​ - ​ 4,905 Segment F-2 ​ Mortgage Notes Receivable ​ 88 ​ (8) ​ - ​ (53) ​ - ​ 35 ​ ​ Sub-total ​ 33,245 ​ 738 ​ - ​ (365) ​ - ​ 32,880 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-3 ​ Investment in Direct Financing Leases ​ 694 ​ (62) ​ - ​ (68) ​ - ​ 626 ​ ​ Sub-total ​ 694 ​ (62) ​ - ​ (68) ​ - ​ 626 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-4 ​ Other Investments ​ 24,397 ​ 4,076 (1) - ​ 4,489 (1) - ​ 28,886 Segment B-3 ​ Other Investments ​ 5,113 ​ (483) ​ - ​ (266) ​ - ​ 4,847 Segment C-2 ​ Other Investments ​ 94 ​ (18) ​ - ​ (58) ​ - ​ 36 Segment D-5 ​ Other Investments ​ 1,853 ​ (57) ​ - ​ (67) ​ (95) ​ 1,691 ​ ​ Sub-total ​ 31,457 ​ 3,518 ​ - ​ 4,098 ​ (95) ​ 35,460 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-4 ​ Off-Balance Sheet Mortgage Commitments ​ 24 ​ (31) ​ - ​ 7 ​ - ​ 31 Segment B-3 ​ Off-Balance Sheet Note Commitments ​ 2,305 ​ (585) ​ - ​ (1,123) ​ - ​ 1,182 Segment C-2 ​ Off-Balance Sheet Note Commitments ​ 116 ​ (42) ​ - ​ (37) ​ - ​ 79 ​ ​ Sub-total ​ 2,445 ​ (658) ​ - ​ (1,153) ​ - ​ 1,292 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total $ 67,841 $ 3,536 $ - $ 2,512 $ (95) $ 70,258 (1) This provision primarily relates to a $4.5 million reserve recorded on a term loan during the second quarter of 2021. A rollforward of our allowance for credit losses for the six months ended June 30, 2020 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment ​ Financial Statement Line Item Allowance for Credit Loss at December 31, 2019 Allowance for Credit Loss on January 1, 2020 Provision (recovery) for Credit Loss for the three months ended June 30, 2020 Write-offs charged against allowance for the three months ended June 30, 2020 Provision (recovery) for Credit Loss for the six months ended June 30, 2020 Write-offs charged against allowance for the six months ended June 30, 2020 Allowance for Credit Loss as of June 30, 2020 ​ ​ ​ (in thousands) Segment A-4 ​ Mortgage Notes Receivable $ - $ 19,293 $ 2,704 $ - $ 3,774 ​ - $ 23,067 Segment B-3 ​ Mortgage Notes Receivable ​ - ​ 901 ​ (106) ​ - ​ (74) ​ - ​ 827 Segment C-5 ​ Mortgage Notes Receivable ​ - ​ 829 ​ (396) ​ - ​ (409) ​ - ​ 420 Segment E-6 ​ Mortgage Notes Receivable ​ 4,905 ​ 363 ​ (93) ​ - ​ (27) ​ - ​ 5,241 Segment F-2 ​ Mortgage Notes Receivable ​ - ​ - ​ 133 ​ - ​ 133 ​ - ​ 133 ​ ​ Sub-total ​ 4,905 ​ 21,386 ​ 2,242 ​ - ​ 3,397 ​ - ​ 29,688 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-3 ​ Investment in Direct Financing Leases ​ 217 ​ 611 ​ (26) ​ (217) ​ (5) ​ (217) ​ 606 ​ ​ Sub-total ​ 217 ​ 611 ​ (26) ​ (217) ​ (5) ​ (217) ​ 606 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-4 ​ Other Investments ​ - ​ 3,158 ​ (983) ​ - ​ (826) ​ - ​ 2,332 Segment B-3 ​ Other Investments ​ - ​ 1,434 ​ (441) ​ - ​ (412) ​ - ​ 1,022 Segment C-2 ​ Other Investments ​ - ​ 195 ​ (61) ​ - ​ (71) ​ - ​ 124 Segment D-5 ​ Other Investments ​ - ​ 1,901 ​ (705) ​ - ​ (545) ​ - ​ 1,356 ​ ​ Sub-total ​ - ​ 6,688 ​ (2,190) ​ - ​ (1,854) ​ - ​ 4,834 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-4 ​ Off-Balance Sheet Commitments ​ - ​ 100 ​ (11) ​ - ​ (37) ​ - ​ 63 ​ ​ Sub-total ​ - ​ 100 ​ (11) ​ - ​ (37) ​ - ​ 63 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total $ 5,122 $ 28,785 $ 15 $ (217) $ 1,501 $ (217) $ 35,191 ​ A summary of our amortized cost basis by year of origination and credit quality indicator is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Rating Financial Statement Line Item 2021 2020 2019 2018 2017 2016 2015 & older Revolving Loans ​ Balance as of June 30, 2021 ​ ​ (in thousands) 1 Mortgage Notes Receivable $ - $ - $ - $ - $ - $ - $ 66,251 $ - ​ $ 66,251 2 Mortgage Notes Receivable ​ - ​ 21,325 ​ - ​ - ​ - ​ - ​ - ​ - ​ ​ 21,325 3 Mortgage Notes Receivable ​ 6,420 ​ - ​ - ​ - ​ - ​ - ​ 35,964 ​ - ​ ​ 42,384 4 Mortgage Notes Receivable ​ 4,307 ​ 89,373 ​ 18,883 ​ 44,374 ​ 46,431 ​ 38,830 ​ 504,110 ​ - ​ ​ 746,308 5 Mortgage Notes Receivable ​ - ​ - ​ - ​ - ​ - ​ - ​ 7,397 ​ - ​ ​ 7,397 6 Mortgage Notes Receivable ​ - ​ - ​ - ​ - ​ - ​ - ​ 6,377 ​ - ​ ​ 6,377 ​ Sub-total ​ 10,727 ​ 110,698 ​ 18,883 ​ 44,374 ​ 46,431 ​ 38,830 ​ 620,099 ​ - ​ ​ 890,042 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 3 Investment in Direct Financing Leases ​ - ​ - ​ - ​ - ​ - ​ - ​ 11,433 ​ - ​ ​ 11,433 ​ Sub-total ​ - ​ - ​ - ​ - ​ - ​ - ​ 11,433 ​ - ​ ​ 11,433 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2 Other Investments ​ - ​ - ​ - ​ - ​ - ​ - ​ 2,082 ​ 10,820 ​ ​ 12,902 3 Other Investments ​ 6,000 ​ - ​ 20,805 ​ 28,602 ​ - ​ - ​ 3,493 ​ 184,588 ​ ​ 243,488 4 Other Investments ​ - ​ - ​ 11,560 ​ 116,608 ​ - ​ 75,590 ​ - ​ 5,000 ​ ​ 208,758 5 Other Investments ​ - ​ - ​ 23,351 ​ 5,625 ​ - ​ - ​ - ​ - ​ ​ 28,976 ​ Sub-total ​ 6,000 ​ - ​ 55,716 ​ 150,835 ​ - ​ 75,590 ​ 5,575 ​ 200,408 ​ ​ 494,124 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total ​ $ 16,727 $ 110,698 $ 74,599 $ 195,209 $ 46,431 $ 114,420 $ 637,107 $ 200,408 ​ $ 1,395,599 ​

VARIABLE INTEREST ENTITIES

VARIABLE INTEREST ENTITIES	6 Months Ended
	Jun. 30, 2021
Variable Interest Entities [Abstract]
VARIABLE INTEREST ENTITIES	NOTE 7 – VARIABLE INTEREST ENTITIES As of June 30, 2021 and December 31, 2020, Agemo Holdings, LLC (“Agemo”) and Maplewood Real Estate Holdings, LLC (“Maplewood”) are both variable interest entities (“VIEs”). As of June 30, 2021, we have not consolidated any VIEs, as we have concluded that we are not the primary beneficiary. This conclusion is based on the fact that we do not have the power to direct the activities of any VIEs that most significantly impact their economic performance and we do not have the obligation to absorb losses or receive benefits of the VIEs that could be significant to the entities. Below is a summary of our assets, liabilities and collateral associated with these operators as of June 30, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2021 ​ December 31, 2020 ​ ​ ​ Agemo Maplewood ​ Agemo Maplewood ​ ​ ​ (in thousands) ​ (in thousands) ​ Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate investments – net ​ $ 338,291 ​ 750,953 ​ $ 371,010 $ 750,488 ​ Assets held for sale ​ ​ 14,710 ​ — ​ ​ — ​ — ​ Other investments ​ 34,253 ​ 174,988 ​ ​ 34,253 147,148 ​ Contractual receivables ​ 475 ​ 1,021 ​ ​ 346 887 ​ Straight-line rent receivables ​ — ​ (49,119) ​ ​ — (56,664) ​ Lease inducement ​ ​ — ​ 66,987 ​ ​ — ​ 69,666 ​ Total Assets ​ 387,729 944,830 ​ ​ 405,609 ​ 911,525 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net in-place lease liability ​ ​ — ​ (318) ​ ​ — ​ (331) ​ Security deposit ​ ​ (343) ​ (4,609) ​ ​ — ​ — ​ Contingent liability ​ ​ — ​ (43,915) ​ ​ — ​ (43,915) ​ Total Liabilities ​ (343) (48,842) ​ ​ — ​ (44,246) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Collateral ​ ​ ​ ​ ​ Letters of credit ​ (9,253) ​ — ​ ​ (9,253) — ​ Personal guarantee ​ (8,000) ​ (40,000) ​ ​ (8,000) (40,000) ​ Other collateral ​ (353,001) ​ (750,953) ​ ​ (371,010) (750,488) ​ Total Collateral ​ (370,254) (790,953) ​ ​ (388,263) ​ (790,488) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Maximum exposure to loss ​ $ 17,132 $ 105,035 ​ $ 17,346 $ 76,791 ​ ​ In determining our maximum exposure to loss from the VIE, we considered the underlying carrying value of the real estate subject to leases with the operator and other collateral, if any, supporting our other investments, which may include accounts receivable, security deposits, letters of credit or personal guarantees, if any, as well as other liabilities recognized with respect to these operators. In May 2018, we reached an out-of-court restructuring agreement with Agemo that, among other terms, provided for the deferral of rent up to $6.3 million per annum through April 2021. During the second quarter of 2021, the Agemo lease was amended to allow for the deferral of four The table below reflects our total revenues from Agemo and Maplewood for the three and six months ended June 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, ​ ​ ​ ​ 2021 ​ 2021 ​ 2020 ​ 2020 ​ 2021 ​ 2021 ​ 2020 ​ 2020 ​ ​ ​ ​ Agemo ​ Maplewood ​ Agemo ​ Maplewood ​ Agemo ​ Maplewood ​ Agemo ​ Maplewood ​ ​ ​ ​ (in thousands) ​ (in thousands) ​ Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Rental income ​ ​ $ 12,282 ​ $ 19,093 ​ $ 14,814 ​ $ 10,041 ​ $ 23,774 ​ $ 38,125 ​ $ 30,101 ​ $ 20,182 ​ Other investment income ​ ​ 1,178 ​ 3,052 ​ 1,297 ​ 1,202 ​ 2,335 ​ 5,840 ​ 2,538 ​ 2,404 ​ Total (1) ​ ​ $ 13,460 ​ $ 22,145 ​ $ 16,111 ​ $ 11,243 ​ $ 26,109 ​ $ 43,965 ​ $ 32,639 ​ $ 22,586 ​ (1) For the three months ended June 30, 2021 and 2020, we received cash from Agemo of approximately $14.0 million and $13.1 million, respectively, pursuant to our lease and other investment agreements. For the six months ended June 30, 2021 and 2020, we received cash from Agemo of approximately $28.0 million and $26.8 million, respectively, pursuant to our lease and other investment agreements. For the three months ended June 30, 2021 and 2020, we received cash from Maplewood of approximately $19.7 million and $17.2 million, respectively, pursuant to our lease and other investment agreements. For the six months ended June 30, 2021 and 2020, we received cash from Maplewood of approximately $39.0 million and $33.9 million, respectively, pursuant to our lease and other investment agreements.

INVESTMENTS IN JOINT VENTURES

INVESTMENTS IN JOINT VENTURES	6 Months Ended
	Jun. 30, 2021
INVESTMENTS IN JOINT VENTURES [Abstract]
INVESTMENTS IN JOINT VENTURES	NOTE 8 – INVESTMENTS IN JOINT VENTURES Unconsolidated Joint Ventures Omega owns an interest in a number of joint ventures that are accounted for under the equity method. These entities and their subsidiaries are not consolidated by the Company because it does not control, through voting rights or other means, the joint venture. The following is a summary of our investments in unconsolidated joint ventures (dollars in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying Amount ​ ​ Ownership ​ Initial Investment ​ ​ ​ ​ Facility ​ Facilities at ​ June 30, ​ December 31, Entity ​ % ​ Date ​ ​ Investment (1) ​ Type ​ 6/30/2021 ​ 2021 2020 Second Spring Healthcare Investments (2) ​ 15% ​ 11/1/2016 ​ $ 50,032 ​ SNF ​ — ​ $ 10,916 $ 17,700 Second Spring II LLC (3) ​ 15% ​ 3/10/2021 ​ ​ 10,330 ​ SNF ​ 1 ​ ​ 2,279 ​ — Lakeway Realty, L.L.C. ​ 51% ​ 5/17/2019 ​ ​ 73,834 ​ Specialty facility ​ 1 ​ ​ 71,831 ​ ​ 72,318 Cindat Joint Venture ​ 49% ​ 12/18/2019 ​ ​ 105,688 ​ ALF ​ 66 ​ ​ 112,656 ​ ​ 110,360 OMG Senior Housing, LLC ​ 50% ​ 12/6/2019 ​ ​ — ​ Specialty facility ​ 1 ​ — ​ — OH CHS SNP, Inc. ​ 9% ​ 12/20/2019 ​ ​ 900 ​ N/A ​ N/A ​ ​ 230 ​ ​ 260 ​ ​ ​ ​ ​ ​ $ 240,784 ​ ​ ​ ​ ​ $ 197,912 ​ $ 200,638 (1) Our initial investment includes our transaction costs, if any. (2) During the first quarter of 2021, this joint venture sold 16 SNFs to an unrelated third party for approximately $328 million in net proceeds and recognized a gain on sale of approximately $102.2 million ( $14.9 million of which represents the Company’s share of the gain). During the first quarter of 2021, this joint venture also sold five SNFs to Second Spring II LLC for approximately $70.8 million in net proceeds. (3) We acquired a 15% interest in Second Spring II LLC for approximately $10.3 million. During the first quarter of 2021, this joint venture acquired five SNFs from Second Spring Healthcare Investments for approximately $70.8 million. During the second quarter of 2021, this joint venture sold four SNFs to an unrelated third party for approximately $50 million in net proceeds and recognized a loss on sale of approximately $0.3 million ( $0.1 million of which represents the Company’s share of the loss). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, Entity ​ 2021 2020 ​ 2021 2020 ​ ​ (in thousands) Second Spring Healthcare Investments (1) ​ $ 293 ​ $ 712 ​ $ 11,704 ​ $ 1,281 Second Spring II LLC ​ ​ (299) ​ ​ — ​ ​ (756) ​ ​ — Lakeway Realty, L.L.C. ​ ​ 641 ​ 613 ​ ​ 1,286 ​ 1,223 Cindat Joint Venture ​ 646 ​ 244 ​ 1,132 ​ 891 OMG Senior Housing, LLC ​ (103) ​ (118) ​ (204) ​ (279) OH CHS SNP, Inc. ​ 9 ​ (49) ​ (145) ​ (154) Total ​ $ 1,187 ​ $ 1,402 ​ $ 13,017 ​ $ 2,962 (1) The income from this unconsolidated joint venture for the six months ended June 30, 2021 includes a $14.9 million gain on sale of real estate investments. Asset Management Fees We receive asset management fees from certain joint ventures for services provided. For each of the three months ended June 30, 2021 and 2020, we recognized approximately $0.3 million and $0.5 million, respectively, of asset management fees. For each of the six months ended June 30, 2021 and 2020, we recognized approximately $0.5 million and $0.7 million, respectively, of asset management fees. These fees are included in miscellaneous income in the accompanying Consolidated Statements of Operations.

ASSETS HELD FOR SALE

ASSETS HELD FOR SALE	6 Months Ended
	Jun. 30, 2021
Assets Held for Sale [Abstract]
ASSETS HELD FOR SALE	NOTE 9 – ASSETS HELD FOR SALE The following is a summary of our assets held for sale: ​ ​ ​ ​ ​ ​ Facilities Held For Sale ​ Number of Facilities ​ (in thousands) December 31, 2020 22 ​ $ 81,452 Facilities sold/other (1) (21) ​ ​ (81,252) Facilities added (2) 5 ​ ​ 7,722 March 31, 2021 6 ​ $ 7,922 Facilities sold/other (1) (5) ​ ​ (1,795) Facilities added (2)(3) 8 ​ ​ 29,208 June 30, 2021 (3) 9 ​ $ 35,335 (1) In the first quarter of 2021, we sold 21 facilities for approximately $187.6 million in net cash proceeds recognizing a net gain on sale of approximately $100.3 million. In the second quarter of 2021, we sold four facilities for approximately $3.5 million in net cash proceeds recognizing a net gain on sale of approximately $1.9 million. One facility classified as held for sale at March 31, 2021 was no longer considered held for sale during the second quarter of 2021 and was reclassified to leased property at approximately $0.2 million which represents the facility’s carrying value. (2) In the first quarter of 2021, we recorded approximately $16.9 million of impairment expense to reduce three facilities’ book value to their estimated fair value less costs to sell before they were reclassified to assets held for sale. In the second quarter of 2021, we recorded approximately $8.8 million of impairment expense to reduce three facilities’ book value to their estimated fair value less costs to sell before they were reclassified to assets held for sale. (3) Number of facilities excludes one parcel of land.

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES	6 Months Ended
	Jun. 30, 2021
Goodwill and Other Intangibles [Abstract]
GOODWILL AND OTHER INTANGIBLES	NOTE 10 – GOODWILL AND OTHER INTANGIBLES The following is a summary of our goodwill as of June 30, 2021: ​ ​ ​ ​ ​ (in thousands) Balance as of December 31, 2020 ​ $ 651,737 Add: foreign currency translation ​ (40) Balance as of June 30, 2021 ​ $ 651,697 ​ The following is a summary of our intangibles as of June 30, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 ​ 2020 ​ ​ ​ (in thousands) ​ Assets: ​ ​ ​ ​ Above market leases ​ $ 22,410 ​ $ 22,822 ​ Accumulated amortization ​ (20,638) (20,882) ​ Net above market leases ​ $ 1,772 ​ $ 1,940 ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ Below market leases ​ $ 139,069 ​ $ 139,515 ​ Accumulated amortization ​ (108,508) (100,996) ​ Net below market leases ​ $ 30,561 ​ $ 38,519 ​ ​ Above market leases, net of accumulated amortization, are included in other assets on our Consolidated Balance Sheets. Below market leases, net of accumulated amortization, are included in accrued expenses and other liabilities on our Consolidated Balance Sheets. The net amortization related to the above and below market leases is included in our Consolidated Statements of Operations as an adjustment to rental income. For the three months ended June 30, 2021 and 2020, our net amortization related to intangibles was $1.1 million and $3.5 million, respectively. For the six months ended June 30, 2021 and 2020, our net amortization related to intangibles was $7.3 million and $4.8 million, respectively. The estimated net amortization related to these intangibles for the remainder of 2021 and the subsequent four years is as follows: remainder of 2021 – $2.2 million; 2022 – $4.2 million; 2023 – $4.0 million; 2024 – $3.8 million and 2025 – $3.6 million. As of June 30, 2021, the weighted average remaining amortization period of above market lease assets is approximately ten years and below market lease liabilities is approximately eight years. ​

CONCENTRATION OF RISK

CONCENTRATION OF RISK	6 Months Ended
	Jun. 30, 2021
Concentration of Risk [Abstract]
CONCENTRATION OF RISK	NOTE 11 – CONCENTRATION OF RISK As of June 30, 2021, our portfolio of real estate investments (including properties associated with mortgages, direct financing leases, and assets held for sale) consisted of 970 healthcare facilities, located in 42 states and the U.K. and operated by 65 third-party operators. Our investment in these facilities, net of impairments and allowances, totaled approximately $10.1 billion at June 30, 2021, with approximately 97% of our real estate investments related to healthcare facilities. Our portfolio is made up of (i) 729 SNFs, 132 ALFs, 35 specialty facilities, two medical office buildings, (ii) fixed rate mortgages on 58 SNFs, three ALFs and two specialty facilities, and (iii) nine facilities that are held for sale. At June 30, 2021, we also held other investments of approximately $458.7 million, consisting primarily of secured loans to third-party operators of our facilities and $197.9 million of investments in six unconsolidated joint ventures. At June 30, 2021 we had investments with one operator/or manager that exceeded 10% of our total investments: Consulate Health Care (“Consulate”). Consulate also generated approximately 10% of our total revenues for the three and six months ended June 30, 2021 and 2020, respectively. At June 30, 2021, the three states in which we had our highest concentration of investments were Florida (15%), Texas (10%) and Michigan (6%).

STOCKHOLDERS EQUITY

STOCKHOLDERS EQUITY	6 Months Ended
	Jun. 30, 2021
Stockholders Equity [Abstract]
STOCKHOLDERS EQUITY	NOTE 12 – STOCKHOLDERS’ EQUITY Dividends The Board of Directors has declared cash dividends on common stock as set forth below: ​ ​ ​ ​ ​ ​ Record ​ Payment ​ Dividend per Date Date Common Share February 8, 2021 ​ February 16, 2021 ​ $ 0.67 May 3, 2021 ​ May 17, 2021 ​ ​ 0.67 August 2, 2021 ​ August 13, 2021 ​ ​ 0.67 ​ Dividend Reinvestment and Common Stock Purchase Plan The table below presents information regarding the shares issued under the Dividend Reinvestment and Common Stock Purchase Plan for the three and six months ended June 30, 2020 and 2021: ​ ​ ​ ​ ​ ​ ​ Shares issued Gross Proceeds ​ Period Ended (in millions) (in millions) Three Months Ended June 30, 2020 - $ - Three Months Ended June 30, 2021 1.6 ​ 61.8 Six Months Ended June 30, 2020 0.1 ​ 3.7 Six Months Ended June 30, 2021 2.0 ​ 77.3 ​ At-The-Market Offering Programs During the third quarter of 2015, Omega entered into Equity Distribution Agreements with several financial institutions to sell $500.0 million of shares of common stock from time to time through an “at-the-market” (“ATM”) offering program (the “2015 ATM Program”). During the second quarter of 2021, we terminated the 2015 ATM Program and entered into a new ATM Equity Offering Sales Agreement pursuant to which shares of common stock having an aggregate gross sales price of up to $1.0 billion (the “2021 ATM Program”) may be sold from time to time (i) by Omega through several financial institutions acting as a sales agent or directly to the financial institutions as principals, or (ii) by several financial institutions acting as forward sellers on behalf of any forward purchasers pursuant to a forward sale agreement. Under the 2021 ATM Program, compensation for sales of the shares will not exceed 2% of the gross sales price per share for shares sold through each financial institution. The use of forward sales under the 2021 ATM Program generally allows Omega to lock in a price on the sale of shares of common stock when sold by the forward sellers but defer receiving the net proceeds from such sales until the shares of our common stock are issued at settlement on a later date. We did not utilize the forward provisions under the 2021 ATM Program during the three months ended June 30, 2021. The table below presents information regarding the shares issued under the 2021 and 2015 ATM Programs for the three and six months ended June 30, 2020 and 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Shares issued Average Net Price Gross Proceeds Commissions Net Proceeds ​ Period Ended (in millions) Per Share (1) (in millions) Three Months Ended June 30, 2020 - $ - $ - $ - $ - Three Months Ended June 30, 2021 2.5 ​ 36.23 ​ 92.4 ​ 1.9 ​ 90.5 Six Months Ended June 30, 2020 0.1 ​ 36.18 ​ 2.0 ​ 0.2 ​ 1.8 Six Months Ended June 30, 2021 4.1 ​ 36.60 ​ 153.8 ​ 3.2 ​ 150.6 (1) Represents the average price per share after commissions. Accumulated Other Comprehensive Income (Loss) The following is a summary of our accumulated other comprehensive income (loss), net of tax where applicable: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of and for the As of and for the ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2021 2020 2021 2020 ​ ​ (in thousands) ​ Foreign Currency Translation: ​ ​ ​ ​ ​ ​ Beginning balance ​ $ (14,231) ​ $ (67,058) ​ $ (18,427) ​ $ (35,100) ​ Translation gain (loss) ​ 601 ​ (1,738) ​ 4,131 ​ (33,626) ​ Realized gain (loss) ​ 22 ​ 1 ​ 688 ​ (69) ​ Ending balance ​ (13,608) ​ (68,795) ​ (13,608) ​ (68,795) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative Instruments: ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash flow hedges: ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ 53,519 ​ (10,213) ​ 17,718 ​ (2,369) ​ Unrealized (loss) gain ​ (20,900) ​ 1,704 ​ 14,291 ​ (5,823) ​ Realized gain (loss) (1) ​ 733 ​ ​ (1,190) ​ 1,343 ​ ​ (1,507) ​ Ending balance ​ 33,352 ​ (9,699) ​ 33,352 ​ (9,699) ​ Net investment hedges: ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ (16,341) ​ 8,767 ​ (13,331) ​ (4,420) ​ Unrealized gain (loss) ​ 317 ​ 766 ​ (2,693) ​ 13,953 ​ Ending balance ​ (16,024) ​ 9,533 ​ (16,024) ​ 9,533 ​ Total accumulated other comprehensive income (loss) before noncontrolling interest ​ 3,720 ​ (68,961) ​ 3,720 ​ (68,961) ​ Add: portion included in noncontrolling interest ​ 803 ​ 2,726 ​ 803 ​ 2,726 ​ Total accumulated other comprehensive income (loss) for Omega ​ $ 4,523 ​ $ (66,235) ​ $ 4,523 ​ $ (66,235) ​ (1) Recorded in interest expense on the Consolidated Statements of Operations.

TAXES

TAXES	6 Months Ended
	Jun. 30, 2021
Taxes [Abstract]
TAXES	NOTE 13 – TAXES Omega was organized, has operated, and intends to continue to operate in a manner that enables Omega to qualify for taxation as a REIT under Sections 856 through 860 of the Code. On a quarterly and annual basis, we perform several analyses to test our compliance within the REIT taxation rules. If we fail to meet the requirements for qualification as a REIT in any tax year, we will be subject to federal income tax on our taxable income at regular corporate rates and may not be able to qualify as a REIT for the four We are also subject to federal taxation of 100% of the net income derived from the sale or other disposition of property, other than foreclosure property, that we held primarily for sale to customers in the ordinary course of a trade or business. We believe that we do not hold assets for sale to customers in the ordinary course of business and that none of the assets currently held for sale or that have been sold would be considered a prohibited transaction within the REIT taxation rules. As a REIT under the Code, we generally will not be subject to federal income taxes on the REIT taxable income that we distribute to stockholders, subject to certain exceptions. In 2020, 2019, and 2018, we distributed dividends in excess of our taxable income. We currently own stock in entities that have elected to be taxed as a REIT. These subsidiary REITs are required to individually satisfy all of the rules for qualification as a REIT. We have elected to treat certain of our active subsidiaries as taxable REIT subsidiaries (“TRSs”). Our domestic TRSs are subject to income taxes at the applicable corporate rates. Our foreign TRSs are subject to foreign income taxes and may be subject to current-year income inclusion relating to ownership of a controlled foreign corporation for U.S. income tax purposes. As of June 30, 2021, one of our TRSs that is subject to income taxes at the applicable corporate rates had a net operating loss (“NOL”) carry-forward of approximately $6.5 million. Our NOL carry-forward was fully reserved as of June 30, 2021, with a valuation allowance due to uncertainties regarding realization. The following is a summary of our provision for income taxes: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Six Months Ended ​ June 30, June 30, ​ ​ 2021 2020 2021 2020 ​ ​ (in millions) Provision for federal, state and local income taxes ​ $ 0.3 $ 0.2 $ 0.6 $ 0.6 Provision for foreign income taxes ​ ​ 0.6 ​ 0.7 ​ 1.3 ​ 1.3 Total provision for income taxes (1) ​ $ 0.9 ​ $ 0.9 ​ $ 1.9 ​ $ 1.9 (1) The above amounts do not include gross receipts or franchise taxes payable to certain states and municipalities. ​

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	6 Months Ended
	Jun. 30, 2021
Stock-Based Compensation [Abstract]
STOCK-BASED COMPENSATION	NOTE 14 – STOCK-BASED COMPENSATION The following is a summary of our stock-based compensation expense for the three and six months ended June 30, 2021 and 2020, respectively. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Six Months Ended ​ ​ June 30, June 30, ​ 2021 2020 2021 2020 ​ (in thousands) ​ Stock-based compensation expense $ 5,811 $ 4,623 $ 11,207 $ 9,258 ​ We granted 22,051 time-based restricted stock units (“RSUs”) and 142,719 time-based profits interest units (“PIUs”) during the first quarter of 2021 to certain officers and key employees, and those units vest on December 31, 2023 (three years after the grant date), subject to continued employment and vesting in certain other events. We also granted 1,232,178 performance based PIUs during the first quarter of 2021 to certain officers and key employees, which are earned based on the level of performance over the performance period (normally three years) and vest quarterly in the four

BORROWING ACTIVITIES AND ARRANG

BORROWING ACTIVITIES AND ARRANGEMENTS	6 Months Ended
	Jun. 30, 2021
BORROWING ACTIVITIES AND ARRANGEMENTS [Abstract]
BORROWING ACTIVITIES AND ARRANGEMENTS	NOTE 15 – BORROWING ACTIVITIES AND ARRANGEMENTS The following is a summary of our borrowings: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Annual ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest Rate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ as of ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ June 30, ​ December 31, ​ ​ Net Proceeds Maturity 2021 2021 2020 ​ ​ (in millions) ​ ​ (in thousands) ​ Secured borrowings ​ ​ ​ HUD mortgages (1)(2) ​ ​ ​ 2046 - 2052 ​ 3.01 % $ 363,556 ​ $ 367,249 ​ Term loan (3) ​ 2022 3.75 % ​ 2,275 ​ ​ 2,275 ​ Total secured borrowings ​ ​ ​ ​ ​ ​ ​ ​ 365,831 ​ ​ 369,524 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Unsecured borrowings ​ ​ ​ ​ Revolving borrowings: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2017 Revolving credit facility (4) ​ N/A N/A ​ — ​ 101,158 ​ Revolving credit facility (4) ​ 2025 1.30 % — ​ — ​ Total revolving borrowings ​ ​ ​ ​ ​ ​ ​ ​ — ​ ​ 101,158 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Senior notes and other unsecured borrowings: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2023 notes (4)(5) $ 692.0 2023 4.375 % 350,000 ​ 700,000 ​ 2024 notes (4) ​ 394.3 2024 4.950 % 400,000 ​ 400,000 ​ 2025 notes (4) ​ 397.7 2025 4.500 % 400,000 ​ 400,000 ​ 2026 notes (4) ​ 594.4 2026 5.250 % 600,000 ​ 600,000 ​ 2027 notes (4) ​ 683.0 2027 4.500 % 700,000 ​ 700,000 ​ 2028 notes (4) ​ 540.8 2028 4.750 % 550,000 ​ 550,000 ​ 2029 notes (4) ​ 487.8 2029 3.625 % 500,000 ​ 500,000 ​ 2031 notes (4) ​ 680.5 ​ 2031 ​ 3.375 % ​ 700,000 ​ ​ 700,000 ​ 2033 notes (4)(6) ​ 689.3 ​ 2033 ​ 3.250 % ​ 700,000 ​ ​ — ​ Subordinated debt (2) ​ 2021 9.000 % 20,000 ​ 20,000 ​ Sterling term loan (4)(7) ​ N/A N/A ​ — ​ 136,700 ​ 2017 OP term loan (8) ​ N/A N/A ​ — ​ 50,000 ​ OP term loan (8) ​ 2025 3.29 % 50,000 ​ — ​ Deferred financing costs – net ​ ​ (29,326) ​ (26,421) ​ Discount – net ​ (33,940) ​ (31,709) ​ Total senior notes and other unsecured borrowings – net ​ 4,906,734 ​ 4,698,570 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total unsecured borrowings – net ​ 4,906,734 ​ 4,799,728 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total secured and unsecured borrowings – net (9)(10) ​ $ 5,272,565 ​ $ 5,169,252 ​ (1) Reflects the weighted average annual contractual interest rate on the mortgages at June 30, 2021. Secured by real estate assets with a net carrying value of $558.0 million as of June 30, 2021. (2) Wholly owned subsidiaries of Omega OP are the obligor on these borrowings. (3) Borrowing is the debt of a consolidated joint venture. (4) Guaranteed by Omega OP. (5) In March 2021, we used a portion of the proceeds from the 2033 Senior Notes offering to fund the tender offer to purchase $350 million of the 4.375% Senior Notes due 2023 . In connection with this transaction, we recorded approximately $29.7 million in related fees, premiums, and expenses which were recorded as Loss on debt extinguishment in our Consolidated Statement of Operations. (6) We used the proceeds from this offering to pay down outstanding borrowings on the 2017 Revolving Credit Facility, repay the Sterling term loan, and fund the tender offer to purchase $350 million of the 4.375% Senior Notes due 2023 and the payment of accrued interest and related fees, premiums and expenses. (7) Actual borrowing is in GBP and remeasured to USD. The Sterling term loan was settled in March 2021 using proceeds from the 3.250% 2033 Senior Notes offering. (8) Omega OP is the obligor on this borrowing. (9) All borrowings are direct borrowings of Parent unless otherwise noted. (10) Certain of our other secured and unsecured borrowings are subject to customary affirmative and negative covenants, including financial covenants. As of June 30, 2021 and December 31, 2020, we were in compliance with all affirmative and negative covenants, including financial covenants, for our secured and unsecured borrowings. Unsecured Borrowings Revolving Credit Facility On April 30, 2021, Omega entered into a credit agreement (the “2021 Omega Credit Agreement”) providing us with a new $1.45 billion senior unsecured multicurrency revolving credit facility (the “Revolving Credit Facility”), replacing our previous $1.25 billion senior unsecured 2017 multicurrency revolving credit facility (the “2017 Revolving Credit Facility”). The 2021 Omega Credit Agreement contains an accordion feature permitting us, subject to compliance with customary conditions, to increase the maximum aggregate commitments thereunder to $2.5 billion, by requesting an increase in the aggregate commitments under the Revolving Credit Facility or by adding term loan tranches. The Revolving Credit Facility bears interest at LIBOR (or in the case of loans denominated in GBP, the Sterling overnight index average reference rate plus an adjustment of 0.1193% per annum) plus an applicable percentage (with a range of 95 to 185 basis points) based on our credit ratings. The Revolving Credit Facility matures on April 30, 2025, subject to Omega’s option to extend such maturity date for two six-month periods. The Revolving Credit Facility may be drawn in Euros, GBP, Canadian Dollars (collectively, “Alternative Currencies”) or USD, with a $1.15 billion tranche available in USD and a $300 million tranche available in Alternative Currencies. For purposes of the Revolving Credit Facility, references to LIBOR include the Canadian dealer offered rates for amounts offered in Canadian Dollars and any other Alternative Currency rate approved in accordance with the terms of the 2021 Omega Credit Agreement for amounts offered in any other non-London interbank offered rate quoted currency, as applicable. We incurred $12.9 million of deferred costs in connection with the 2021 Omega Credit Agreement. OP Term Loan On April 30, 2021, Omega OP entered into a credit agreement (the “2021 Omega OP Credit Agreement”) providing it with a new $50 million senior unsecured term loan facility (the “OP Term Loan”). The OP Term Loan replaces the $50 million senior unsecured term loan obtained in 2017 (the “2017 OP Term Loan”) and the related credit agreement. The OP Term Loan bears interest at LIBOR plus an applicable percentage (with a range of 85 to 185 basis points) based on our credit ratings. The OP Term Loan matures on April 30, 2025, subject to Omega OP’s option to extend such maturity date for two, six-month periods. We incurred $0.4 million of deferred costs in connection with the 2021 Omega OP Credit Agreement. $400 Million Forward Starting Swaps On March 27, 2020, we entered into five forward starting swaps totaling $400 million. We designated the forward starting swaps as cash flow hedges of interest rate risk associated with interest payments on a forecasted issuance of fixed rate long-term debt, initially expected to occur within the next five years. The swaps are effective on August 1, 2023 and expire on August 1, 2033 and were issued at a fixed rate of approximately 0.8675%. In March 2021, in conjunction with the issuance of $700 million aggregate principal amount of our 3.25% Senior Notes due 2033, we discontinued hedge accounting for these five forward starting swaps. Amounts reported in AOCI related to these discontinued cash flow hedging relationships will be reclassified to interest expense over a ten-year term. Simultaneously, we re-designated these swaps in new cash flow hedging relationships of interest rate risk associated with interest payments on another forecasted issuance of long-term debt. We are hedging our exposure to the variability in future cash flows for forecasted transactions over a maximum period of 46 months (excluding forecasted transactions related to the payment of variable interest on existing financial instruments). £174 Million Foreign Exchange Forward Starting Swaps From the issuance date of our GBP borrowings through the prepayment date in March 2021, we used a nonderivative, GBP-denominated term loan and line of credit totaling £174 million to hedge a portion of our net investments in foreign operations. During March 2021 and concurrent with the settlement of our GBP-denominated term loan and repayment of our GBP-denominated borrowings under our line of credit, we entered into four foreign currency forwards, that mature on March 8, 2024, to hedge a portion of our net investments in foreign operations, effectively replacing the terminated net investment hedge. For these derivatives that are designated and qualify as net investment hedges, the gain or loss on the derivative is reported in AOCI as part of the cumulative translation adjustment. Amounts are reclassified out of AOCI into earnings when the hedged net investment is either sold or substantially liquidated.

FINANCIAL INSTRUMENTS

FINANCIAL INSTRUMENTS	6 Months Ended
	Jun. 30, 2021
Financial Instruments [Abstract]
FINANCIAL INSTRUMENTS	NOTE 16 – FINANCIAL INSTRUMENTS The net carrying amount of cash and cash equivalents, restricted cash, contractual receivables, other assets and accrued expenses and other liabilities reported in the Consolidated Balance Sheets approximates fair value because of the short maturity of these instruments (Level 1). At June 30, 2021 and December 31, 2020, the net carrying amounts and fair values of our other financial instruments were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2021 ​ December 31, 2020 ​ Carrying Fair Carrying Fair ​ Amount Value Amount Value ​ ​ (in thousands) Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investments in direct financing leases – net ​ $ 10,807 ​ $ 10,807 $ 10,764 ​ $ 10,764 Mortgage notes receivable – net ​ 857,162 ​ ​ 897,342 ​ ​ 885,313 ​ ​ 924,353 Other investments – net ​ 458,664 ​ ​ 466,690 ​ ​ 467,442 ​ ​ 474,552 Total ​ $ 1,326,633 ​ $ 1,374,839 ​ $ 1,363,519 ​ $ 1,409,669 Liabilities: ​ ​ ​ ​ 2017 Revolving credit facility ​ $ — ​ $ — $ 101,158 ​ $ 101,158 Revolving credit facility ​ ​ — ​ ​ — ​ — ​ ​ — Term loan ​ ​ 2,275 ​ ​ 2,275 ​ ​ 2,275 ​ ​ 2,275 Sterling term loan ​ — ​ ​ — ​ ​ 136,453 ​ ​ 136,700 2017 OP term loan ​ — ​ ​ — ​ ​ 49,896 ​ ​ 50,000 OP Term loan ​ 49,616 ​ ​ 50,000 ​ ​ — ​ ​ — 4.375% notes due 2023 – net ​ 348,816 ​ ​ 379,284 ​ ​ 696,981 ​ ​ 770,635 4.95% notes due 2024 – net ​ 397,219 ​ ​ 442,023 ​ ​ 396,714 ​ ​ 441,194 4.50% notes due 2025 – net ​ 397,305 ​ ​ 444,675 ​ ​ 396,924 ​ ​ 444,652 5.25% notes due 2026 – net ​ 596,790 ​ ​ 697,838 ​ ​ 596,437 ​ ​ 697,993 4.50% notes due 2027 – net ​ 691,642 ​ ​ 790,201 ​ ​ 690,909 ​ ​ 794,294 4.75% notes due 2028 – net ​ 543,404 ​ ​ 627,615 ​ ​ 542,899 ​ ​ 633,950 3.625% notes due 2029 – net ​ ​ 490,076 ​ ​ 538,108 ​ ​ 489,472 ​ ​ 532,248 3.375% notes due 2031 – net ​ ​ 682,697 ​ ​ 721,067 ​ ​ 681,802 ​ ​ 731,541 3.25% notes due 2033 – net ​ ​ 689,128 ​ ​ 698,804 ​ ​ — ​ ​ — HUD mortgages – net ​ ​ 363,556 ​ ​ 396,266 ​ ​ 367,249 ​ ​ 409,004 Subordinated debt – net ​ 20,041 ​ ​ 20,799 ​ ​ 20,083 ​ ​ 21,599 Total ​ $ 5,272,565 ​ $ 5,808,955 ​ $ 5,169,252 ​ $ 5,767,243 ​ Fair value estimates are subjective in nature and are dependent on a number of important assumptions, including estimates of future cash flows, risks, discount rates and relevant comparable market information associated with each financial instrument (see Note 2 – Summary of Significant Accounting Policies in our Annual Report on Form 10-K The following methods and assumptions were used in estimating fair value disclosures for financial instruments. ● Direct financing leases: The fair value of the investments in direct financing leases are estimated using a discounted cash flow analysis, using interest rates being offered for similar leases to borrowers with similar credit ratings (Level 3). ● Mortgage notes receivable: The fair value of the mortgage notes receivables are estimated using a discounted cash flow analysis, using interest rates being offered for similar loans to borrowers with similar credit ratings (Level 3). ● Other investments: Other investments are primarily comprised of notes receivable. The fair values of notes receivable are estimated using a discounted cash flow analysis, using interest rates being offered for similar loans to borrowers with similar credit ratings (Level 3). ● Revolving line of credit, secured borrowing and term loan: The fair value of our borrowings under variable rate agreements are estimated using a present value technique based on expected cash flows discounted using the current market rates (Level 3). ● Senior notes and subordinated debt: The fair value of our borrowings under fixed rate agreements are estimated using a present value technique based on inputs from trading activity provided by a third-party (Level 2). ● HUD mortgages: The fair value of our borrowings under HUD debt agreements are estimated using an expected present value technique based on quotes obtained by HUD debt brokers (Level 2).

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Jun. 30, 2021
COMMITMENTS AND CONTINGENCIES [Abstract]
COMMITMENTS AND CONTINGENCIES	NOTE 17 – COMMITMENTS AND CONTINGENCIES Litigation The Company and certain of its officers, C. Taylor Pickett, Robert O. Stephenson, and Daniel J. Booth Certain derivative actions have also been brought against the officers named in the Securities Class Action, and certain current and former directors of the Company, alleging claims relating to the matters at issue in the Securities Class Action. These derivative actions are currently stayed pending certain developments in the Securities Class Action. In 2018, Stourbridge Investments LLC, a purported stockholder of the Company, filed a derivative action purportedly on behalf of the Company in the U.S. District Court for the Southern District of New York, alleging violations of Section 14(a) of the Exchange Act and state-law claims including breach of fiduciary duty. The complaint alleges, among other things, that the named defendants are responsible for the Company’s failure to disclose the financial condition of Orianna Health Systems, the alleged non-disclosures that are also the subject of the Securities Class Action described above. The plaintiff did not make a demand on the Company to bring the action prior to filing it, but rather alleges that demand would have been futile. The case has been stayed pending the entry of judgment or a voluntary dismissal with prejudice in the Securities Class Action. In 2019, purported stockholder Phillip Swan by his counsel, and stockholders Tom Bradley and Sarah Smith by their counsel, filed derivative actions in the Baltimore City Circuit Court of Maryland, purportedly on behalf of the Company, asserting claims for breach of fiduciary duty, waste of corporate assets and unjust enrichment against the named defendants. Those actions have been consolidated and stayed in the Maryland court pending completion of fact discovery in the Securities Class Action. Prior to filing suit, each of these stockholders had made demands on the Board of Directors in 2018 that the Company bring such lawsuits. After an investigation and due consideration, and in the exercise of its business judgment, the Board determined that it is not in the best interests of the Company to commence litigation against any current or former officers or directors based on the matters raised in the demands. In addition, in late 2020, Robert Wojcik, a purported shareholder of the Company, filed a derivative action in the U.S. District Court for the District of Maryland, purportedly on behalf of the Company, asserting violations of Section 14(a) of the Exchange Act, Sections 10(b) and 21D of the Exchange Act, as well as claims for breach of fiduciary duty, unjust enrichment, abuse of control, gross mismanagement, and waste of corporate assets. Wojcik also did not make a demand on the Company prior to filing suit. The case has been stayed pending the entry of judgment or a voluntary dismissal with prejudice in the Securities Class Action. Other In September 2016, MedEquities received a Civil Investigative Demand (“CID”) from the U.S. Department of Justice (“DOJ”), which indicates that it is conducting an investigation regarding alleged violations of the False Claims Act, Stark Law and Anti-Kickback Statute in connection with claims that may have been submitted to Medicare and other federal payors for services rendered to patients at Lakeway Hospital or by providers with financial relationships with Lakeway Hospital. As a result of the acquisition of MedEquities, the Company owns a 51% interest in an unconsolidated partnership that owns Lakeway Hospital (the “Lakeway Realty, L.L.C.”). The CID requested certain documents and information related to the acquisition and ownership of Lakeway Hospital through Lakeway Realty, L.L.C. The Company has learned that the DOJ is investigating MedEquities’ conduct in connection with its investigation of financial relationships related to Lakeway Hospital, including allegations by the DOJ that these relationships violate and continue to violate the Anti-Kickback Statute and, as a result, related claims submitted to federal payors violated and continue to violate the False Claims Act. The Company is cooperating fully with the DOJ in connection with the CID and has produced all of the information that has been requested to date. On September 29, 2020, the Department of Justice announced it had reached a settlement of a False Claims Act case with Lakeway Regional Medical Center wherein Lakeway Regional Medical Center agreed to pay $1.1 million for inducing certain physicians to refer patients by offering a low risk and high return investment in the form of a joint venture to purchase and then lease back the hospital to Lakeway Regional Medical Center. A MedEquities subsidiary was a party to this transaction but was not included in settlement discussions. The documents relating to the settlement are not publicly available. The Company believes that the acquisition, ownership and leasing of Lakeway Hospital through the Lakeway Partnership was and is in compliance with all applicable laws. However, due to the uncertainties surrounding this matter and its ultimate outcome, we are unable to determine whether it is probable that any loss has been incurred. In addition, we are subject to various other legal proceedings, claims and other actions arising out of the normal course of business. While any legal proceeding or claim has an element of uncertainty, management believes that the outcome of each lawsuit, claim or legal proceeding that is pending or threatened, or all of them combined, will not have a material adverse effect on our consolidated financial position or results of operations. Indemnification Agreements In connection with certain facility transitions, we have agreed to indemnify certain operators in certain events. As of June 30, 2021, our maximum funding commitment under these indemnification agreements was approximately $8.6 million. Claims under these indemnification agreements may be made within 18 months to 72 months of the transition date. These indemnification agreements were provided to certain operators in connection with facility transitions and generally would be applicable in the event that the prior operators do not perform under their transition agreements. The Company does not expect to fund a material amount under these indemnification agreements. Commitments We have committed to fund the construction of new leased and mortgaged facilities, capital improvements and other commitments. We expect the funding of these commitments to be completed over the next several years. Our remaining commitments at June 30, 2021, are outlined in the table below (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total commitments $ 539,528 ​ ​ Amounts funded to date (1) ​ (415,281) ​ ​ Remaining commitments (2) ​ $ 124,247 ​ ​ (1) Includes finance costs. (2) This amount excludes our remaining commitments to fund under our other investments of approximately $67.6 million.

EARNINGS PER SHARE

EARNINGS PER SHARE	6 Months Ended
	Jun. 30, 2021
Earnings per Share [Abstract]
EARNINGS PER SHARE	NOTE 18 – EARNINGS PER SHARE The following tables set forth the computation of basic and diluted earnings per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Six Months Ended ​ ​ June 30, June 30, ​ ​ 2021 2020 2021 2020 ​ ​ (in thousands, except per share amounts) ​ Numerator: ​ ​ ​ ​ ​ ​ Net income ​ $ 86,863 ​ $ 101,960 ​ $ 251,229 ​ $ 194,239 ​ Deduct: net income attributable to noncontrolling interests ​ (2,340) ​ (2,653) ​ (6,728) ​ (5,017) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income available to common stockholders ​ $ 84,523 ​ $ 99,307 ​ $ 244,501 ​ $ 189,222 ​ Denominator: ​ ​ ​ ​ ​ Denominator for basic earnings per share ​ 236,229 ​ 227,411 ​ 234,401 ​ 227,336 ​ Effect of dilutive securities: ​ ​ ​ ​ ​ ​ ​ Common stock equivalents ​ 1,130 ​ 1,030 ​ 1,037 ​ 1,146 ​ Noncontrolling interest – Omega OP Units ​ 6,549 ​ 6,082 ​ 6,470 ​ 6,033 ​ Denominator for diluted earnings per share ​ 243,908 ​ 234,523 ​ 241,908 ​ 234,515 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Earnings per share - basic: ​ ​ ​ ​ ​ Net income available to common stockholders ​ $ 0.36 ​ $ 0.44 ​ $ 1.04 ​ $ 0.83 ​ Earnings per share – diluted: ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income ​ $ 0.36 ​ $ 0.43 ​ $ 1.04 ​ $ 0.83 ​ ​

SUPPLEMENTAL DISCLOSURE TO CONS

SUPPLEMENTAL DISCLOSURE TO CONSOLIDATED STATEMENTS OF CASH FLOWS	6 Months Ended
	Jun. 30, 2021
Supplemental Cash Flow Elements [Abstract]
SUPPLEMENTAL DISCLOSURE TO CONSOLIDATED STATEMENTS OF CASH FLOWS	​ NOTE 19 – SUPPLEMENTAL DISCLOSURE TO CONSOLIDATED STATEMENTS OF CASH FLOWS The following are supplemental disclosures to the consolidated statements of cash flows for the six months ended June 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended June 30, ​ ​ 2021 2020 ​ (in thousands) ​ Reconciliation of cash and cash equivalents and restricted cash: ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 100,824 ​ $ 37,022 ​ Restricted cash ​ 3,736 ​ 4,543 ​ Cash, cash equivalents and restricted cash at end of period ​ $ 104,560 ​ $ 41,565 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental information: ​ ​ ​ ​ ​ Interest paid during the period, net of amounts capitalized ​ $ 105,634 ​ $ 112,035 ​ Taxes paid during the period ​ $ 3,072 ​ $ 4,497 ​ ​ ​ ​ ​ ​ ​ ​ ​ Non cash investing activities ​ ​ ​ Non cash proceeds from sale of real estate investments ​ $ — ​ $ 83,910 ​ Non cash placement of mortgages ​ $ (1,000) ​ $ (86,936) ​ Non cash proceeds from other investments ​ $ 1,000 ​ $ 3,026 ​ ​ ​ ​ ​ ​ ​ ​ ​ Non cash financing activities ​ ​ ​ Non cash borrowing of other long-term borrowings ​ $ — ​ $ 6,459 ​ Change in fair value of cash flow hedges ​ $ 17,869 ​ $ (7,329) ​ Remeasurement of debt denominated in a foreign currency ​ $ 3,010 ​ $ (13,953) ​ ​

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	6 Months Ended
	Jun. 30, 2021
SUBSEQUENT EVENTS
SUBSEQUENT EVENTS	​ ​ ​ ​ NOTE 20 – SUBSEQUENT EVENTS On July 1, 2021, we financed six SNFs in Ohio and amended an existing $6.4 million mortgage to include the six facilities in a consolidated $72.4 million mortgage for eight Ohio facilities bearing interest at an initial rate of 10.5% per annum. In conjunction with this transaction, we also acquired three Maryland facilities that were previously subject to a mortgage issued by Omega bearing interest at 13.75% per annum with a principal balance of $36.0 million. The purchase price for these three facilities was equal to the remaining mortgage principal amount, and the three acquired Maryland facilities were subsequently leased back to the seller for a term expiring on December 31, 2032, assuming Omega exercises the options under the agreement. The base rent in the initial year is approximately $5.0 million and includes annual escalators of 2.5% . On July 1, 2021, we also entered into a $12.0 million revolving credit facility agreement with this operator for working capital expenses for the eight Ohio facilities discussed above with a maturity date of June 30, 2022 . The credit facility bears interest at 10% per annum. On July 14, 2021, we acquired two U.K. facilities for $9.5 million and entered into a lease with an existing operator with an initial term expiring on April 23, 2027. The base rent in the initial year is approximately $0.8 million and includes annual escalators of 2.5%. ​ ​

BASIS OF PRESENTATION AND SIG_2

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policy)	6 Months Ended
	Jun. 30, 2021
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and do not include all of the information and notes required by U.S. generally accepted accounting principles (“GAAP”) for complete financial statements. In our opinion, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. The results of operations for the interim periods reported herein are not necessarily indicative of results to be expected for the full year. These unaudited consolidated financial statements should be read in conjunction with the financial statements and the footnotes thereto included in our latest Annual Report on Form 10-K Omega’s consolidated financial statements include the accounts of (i) Parent, (ii) Omega OP, (iii) all direct and indirect wholly owned subsidiaries of Omega and (iv) other entities in which Omega or Omega OP has a majority voting interest and control. All intercompany transactions and balances have been eliminated in consolidation, and Omega’s net earnings are reduced by the portion of net earnings attributable to noncontrolling interests.
Reclassification	Reclassification Certain line items on our Consolidated Balance Sheets, Consolidated Statements of Operations, Consolidated Statements of Changes in Equity and Consolidated Statements of Cash Flows have been reclassified to conform to the current period presentation.
Impact of COVID-19	Impact of COVID-19 The Company is subject to certain risks and uncertainties affecting the healthcare industry, including those stemming from the novel coronavirus (“COVID-19”) global pandemic described below, which has disproportionately impacted the senior care sector, as well as those stemming from healthcare legislation and changing regulation by federal, state and local governments. Additionally, we are subject to risks and uncertainties as a result of changes affecting operators of nursing home facilities due to the actions of governmental agencies and insurers to limit the rising cost of healthcare services. In addition to experiencing outbreaks of positive cases and deaths of residents and employees during the pandemic, our operators have been required to, and continue to, adapt their operations rapidly throughout the pandemic to manage the spread of the COVID-19 virus as well as the implementation of new treatments and vaccines, and to implement new requirements relating to infection control, staffing levels, personal protective equipment (“PPE”), quality of care, visitation protocols, and reporting, among other regulations, throughout the pandemic while facing staffing shortages that have accelerated during the pandemic and that may impede the delivery of care. It remains uncertain when and to what extent vaccination programs for COVID-19, which have been implemented in most of our facilities, will continue to mitigate the effects of COVID-19 in our facilities, or how effective existing vaccines will be against variants of the COVID-19 virus; the impact of these programs will depend in part on the continued speed, distribution, efficacy and delivery of the vaccine in our facilities, as well as participation levels in vaccination programs among the residents and employees of our operators. In addition to the risks associated with managing the spread of the virus, delivery of the vaccines and care of their patients and residents, many of our operators reported incurring, and may continue to incur, significant cost increases as a result of the COVID-19 pandemic, with dramatic increases for facilities with positive cases. We believe these increases primarily stem from elevated labor costs, in part due to staffing shortages, including the increased use of overtime and bonus pay and reliance on agency staffing, as well as a significant increase in both the cost and usage of PPE, testing equipment and processes and supplies, as well as implementation of new infection control protocols and vaccination programs. In addition, many of our operators have reported experiencing declines, in some cases that are material, in occupancy levels as a result of the pandemic. While these declines on average appear to be stabilizing and even marginally improving in recent months, it remains unclear when demand and occupancy levels will return to pre-COVID-19 levels. We believe these occupancy declines may be in part due to staffing shortages, which in some cases have required operators to limit admissions, as well as COVID-19 related fatalities at our facilities, the delay of SNF placement and/or utilization of alternative care settings for those with lower level of care needs, the suspension and/or postponement of elective hospital procedures, fewer discharges from hospitals to SNFs and higher hospital readmittances from SNFs. We continue to monitor the impact of occupancy declines at many of our operators, and it remains uncertain whether and when demand, staffing and occupancy levels will return to pre-COVID-19 levels. While substantial government support has been allocated to SNFs and to a lesser extent to ALFs, further government support will likely be needed to continue to offset these impacts and it is unclear whether and to what extent such government support has been and will continue to be sufficient and timely to offset these impacts. Further, to the extent the impacts of the pandemic continue or accelerate and are not offset by continued government relief that is sufficient and timely, we anticipate that the operating results of certain of our operators would be materially and adversely affected, some may be unwilling or unable to pay their contractual obligations to us in full or on a timely basis and we may be unable to restructure such obligations on terms as favorable to us as those currently in place. Even if operators are able to avail themselves of government relief to offset some of these costs, they may face challenges in complying with the terms and conditions of government support and may face longer-term adverse impacts to their personnel and business operations from the COVID-19 pandemic, including potential patient litigation and decreased demand for their services, loss of business due to an interruption in their operations, workforce challenges, new regulatory restrictions, or other liabilities related to gathering restrictions, quarantines, reopening plans, vaccine distribution or delivery, spread of infection or other related factors. The extent of the COVID-19 pandemic’s effect on our and our operators’ operational and financial performance will depend on future developments, including the ability to control the spread of the outbreak generally and in our facilities and the delivery and efficacy of and participation in vaccination programs and other treatments for COVID-19, government funds and other support for the senior care sector and the efficacy of other policies and measures that may mitigate the impact of the pandemic, as well as the future demand for needs-based skilled nursing care and senior living facilities, all of which are uncertain and difficult to predict. Due to these uncertainties, we are not able at this time to estimate the effect of these factors on our business, but the adverse impact on our business, results of operations, financial condition and cash flows could be material.
Derivative Instruments	Derivative Instruments Cash flow hedges During our normal course of business, we may use certain types of derivative instruments for the purpose of managing interest rate and currency risk. As a matter of policy, we do not use derivatives for trading or speculative purposes. To qualify for hedge accounting, derivative instruments used for risk management purposes must effectively reduce the risk exposure that they are designed to hedge. In addition, at the inception of a qualifying cash flow hedging relationship, the underlying transaction or transactions, must be, and are expected to remain, probable of occurring in accordance with our related assertions. The Company recognizes all derivative instruments, including embedded derivatives required to be bifurcated, as assets or liabilities in the Consolidated Balance Sheets at their fair value which is determined using a market approach and Level 2 inputs. Changes in the fair value of derivative instruments that are not designated in hedging relationships or that do not meet the criteria of hedge accounting are recognized in earnings. For derivatives designated in qualifying cash flow hedging relationships, the gain or loss on the derivative is recognized in accumulated other comprehensive income (“AOCI”) as a separate component of equity and a proportionate amount of gain or loss is allocated to noncontrolling interest, if applicable. We formally document all relationships between hedging instruments and hedged items, as well as our risk-management objectives and strategy for undertaking various hedge transactions. This process includes designating all derivatives that are part of a hedging relationship to specific forecasted transactions as well as recognized liabilities or assets on the Consolidated Balance Sheets. We also assess and document, both at inception of the hedging relationship and on a quarterly basis thereafter, whether the derivatives are highly effective in offsetting the designated risks associated with the respective hedged items. If it is determined that a derivative ceases to be highly effective as a hedge, or that it is probable the underlying forecasted transaction will not occur, we discontinue hedge accounting prospectively and record the appropriate adjustment to earnings based on the current fair value of the derivative. At June 30, 2021 and December 31, 2020, $0.5 million and $1.0 million, respectively, of qualifying cash flow hedges were recorded at fair value in accrued expenses and other liabilities on our Consolidated Balance Sheets. At June 30, 2021 and December 31, 2020, $34.1 million and $17.0 million, respectively, of qualifying cash flow hedges were recorded at fair value in other assets on our Consolidated Balance Sheets. Net investment hedges We are exposed to fluctuations in the British Pound (“GBP”) against its functional currency, the U.S. Dollar (“USD”), relating to our investments in healthcare-related real estate located in the U.K. For derivatives that are designated and qualify as net investment hedges, the gain or loss on the derivative is reported in AOCI as part of the cumulative translation adjustment in our Consolidated Balance Sheets. For nonderivative financial instruments that are designated and qualify as net investment hedges, the foreign currency transaction gain or loss on the nonderivative financial instrument is reported in AOCI as a part of the cumulative translation adjustment in our Consolidated Balance Sheets. Amounts are reclassified out of AOCI into earnings when the hedged net investment is either sold or substantially liquidated. From the issuance date of our GBP borrowings through the prepayment date in March 2021, we used a nonderivative, GBP-denominated term loan and line of credit totaling £174 million to hedge a portion of our net investments in foreign operations. During March 2021 and concurrent with the prepayment of our GBP-denominated term loan and line of credit, we entered into four foreign currency forwards that mature on March 8, 2024 to hedge a portion of our net investments in foreign real estate, effectively replacing the terminated net investment hedge. At June 30, 2021, $0.3 million of qualifying net investment hedges were recorded at fair value in other assets on our Consolidated Balance Sheets.

PROPERTIES AND INVESTMENTS (Tab

PROPERTIES AND INVESTMENTS (Tables)	6 Months Ended
	Jun. 30, 2021
PROPERTIES AND INVESTMENTS [Abstract]
Schedule of Investment in Leased Real Estate Properties	A summary of our investments in real estate properties subject to operating leases is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 2020 ​ ​ (in thousands) ​ Buildings ​ $ 7,424,693 ​ $ 6,961,509 ​ Land ​ 941,672 ​ 883,765 ​ Furniture and equipment ​ 533,169 ​ 518,664 ​ Site improvements ​ 328,765 ​ 308,087 ​ Construction in progress ​ 33 ​ 30,129 ​ Total real estate investments ​ 9,228,332 ​ 8,702,154 ​ Less accumulated depreciation ​ (2,139,100) ​ (1,996,914) ​ Real estate investments – net ​ $ 7,089,232 ​ $ 6,705,240 ​
Schedule of operating lease income	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ ​ Six Months Ended June 30, ​ ​ 2021 ​ 2020 ​ ​ 2021 ​ 2020 ​ ​ (in thousands) ​ ​ (in thousands) Rental income – operating leases ​ $ 218,247 ​ $ 217,620 ​ ​ $ 453,309 ​ $ 435,960 Variable lease income – operating leases ​ ​ 2,708 ​ ​ 3,912 ​ ​ ​ 5,407 ​ ​ 7,072 Total rental income ​ $ 220,955 ​ $ 221,532 ​ ​ $ 458,716 ​ $ 443,032
Schedule of Significant Acquisitions	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number of ​ ​ ​ Total ​ Initial ​ ​ Facilities Country/ Investment Annual ​ Period ​ SNF ALF Specialty ​ State ​ (in millions) ​ Cash Yield (1) ​ Q1 — 17 7 AZ, CA, FL, IL, NJ, OR, PA, TN, TX, VA, WA ​ $ 511.3 (2) 8.43 % Q1 ​ 6 — — ​ FL ​ ​ 83.1 ​ 9.25 % Total 6 17 7 ​ $ 594.4 ​ ​ (1) The initial annual cash yield reflects the initial annual cash rent divided by the purchase price. (2) On January 20, 2021, we acquired 24 facilities from Healthpeak Properties, Inc. The acquisition involved the assumption of an in-place master lease with Brookdale Senior Living Inc.

CONTRACTUAL RECEIVABLES AND O_2

CONTRACTUAL RECEIVABLES AND OTHER RECEIVABLES AND LEASE INDUCEMENTS (Tables)	6 Months Ended
	Jun. 30, 2021
CONTRACTUAL RECEIVABLES AND OTHER RECEIVABLES AND LEASE INDUCEMENTS [Abstract]
Schedule of Net Accounts Receivable	A summary of our net receivables by type is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 2020 ​ ​ (in thousands) ​ ​ ​ ​ ​ ​ ​ ​ ​ Contractual receivables – net ​ $ 10,948 ​ $ 10,408 ​ ​ ​ ​ ​ ​ ​ ​ ​ Effective yield interest receivables ​ $ 11,554 ​ $ 12,195 ​ Straight-line rent receivables ​ 138,449 ​ 139,046 ​ Lease inducements ​ 79,506 ​ 83,425 ​ Other receivables and lease inducements ​ $ 229,509 ​ $ 234,666 ​

MORTGAGE NOTES RECEIVABLE (Tabl

MORTGAGE NOTES RECEIVABLE (Tables)	6 Months Ended
	Jun. 30, 2021
Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Schedule of Investments	The principal amounts outstanding of mortgage notes receivable, net of allowances, were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 2020 ​ ​ (in thousands) ​ Mortgage note due 2027; interest at 10.81% ​ $ 112,500 ​ $ 112,500 ​ Mortgage notes due 2029; interest at 10.59% (1) ​ 655,133 ​ 670,015 ​ Other mortgage notes outstanding (2) ​ 122,409 ​ 136,043 ​ Mortgage notes receivable, gross ​ 890,042 ​ 918,558 ​ Allowance for credit losses on mortgage notes receivable ​ (32,880) ​ (33,245) ​ Total mortgages — net ​ $ 857,162 ​ $ 885,313 ​ (1) Approximates the weighted average interest rate on 46 facilities as of June 30, 2021. As of June 30, 2021, the carrying amount includes two mortgages that mature in 2021, a construction mortgage with an outstanding principal balance of $13.9 million and a facility mortgage with an outstanding principal balance of $21.3 million, with the remaining loan balance maturing in 2029. During the second quarter of 2021, one construction mortgage with an original maturity date of 2021 was extended to 2029 and converted into a facility mortgage. (2) Other mortgages outstanding have a weighted average interest rate of 9.38% per annum as of June 30, 2021 and maturity dates ranging from 2023 through 2032 .

OTHER INVESTMENTS (Tables)

OTHER INVESTMENTS (Tables)	6 Months Ended
	Jun. 30, 2021
Other Investment Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Schedule of Investments	A summary of our other investments is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 2020 ​ ​ ​ (in thousands) ​ Other investment notes due 2024; interest at 13.13% (1) ​ $ 87,145 $ 83,636 ​ Other investment notes due 2024-2025; interest at 8.12% (1) ​ ​ 56,987 ​ 56,987 ​ Other investment note due 2023; interest at 12.00% ​ 42,603 ​ ​ 49,973 ​ Other investment notes due 2030; interest at 7.00% ​ 174,988 ​ 147,148 ​ Other investment notes outstanding (2) ​ 132,401 ​ 161,155 ​ Total other investments, gross ​ ​ 494,124 ​ ​ 498,899 ​ Allowance for credit losses on other investments ​ ​ (35,460) ​ ​ (31,457) ​ Total other investments — net ​ $ 458,664 ​ $ 467,442 ​ (1) Approximate weighted average interest rate as of June 30, 2021. (2) Other investment notes have a weighted average interest rate of 8.37% as of June 30, 2021 and maturity dates ranging from 2021 through 2028 .

ALLOWANCE FOR CREDIT LOSSES (Ta

ALLOWANCE FOR CREDIT LOSSES (Tables)	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Schedule of expected credit loss	A rollforward of our allowance for credit losses for the six months ended June 30, 2021 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment ​ Financial Statement Line Item Allowance for Credit Loss as of December 31, 2020 Provision (recovery) for Credit Loss for the three months ended June 30, 2021 Write-offs charged against allowance for the three months ended June 30, 2021 Provision (recovery) for Credit Loss for the six months ended June 30, 2021 Write-offs charged against allowance for the six months ended June 30, 2021 Allowance for Credit Loss as of June 30, 2021 ​ ​ ​ (in thousands) Segment A-4 ​ Mortgage Notes Receivable $ 26,865 $ 793 $ - $ (120) $ - $ 26,745 Segment B-3 ​ Mortgage Notes Receivable ​ 954 ​ 61 ​ - ​ 23 ​ - ​ 977 Segment C-5 ​ Mortgage Notes Receivable ​ 433 ​ (108) ​ - ​ (215) ​ - ​ 218 Segment E-6 ​ Mortgage Notes Receivable ​ 4,905 ​ - ​ - ​ - ​ - ​ 4,905 Segment F-2 ​ Mortgage Notes Receivable ​ 88 ​ (8) ​ - ​ (53) ​ - ​ 35 ​ ​ Sub-total ​ 33,245 ​ 738 ​ - ​ (365) ​ - ​ 32,880 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-3 ​ Investment in Direct Financing Leases ​ 694 ​ (62) ​ - ​ (68) ​ - ​ 626 ​ ​ Sub-total ​ 694 ​ (62) ​ - ​ (68) ​ - ​ 626 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-4 ​ Other Investments ​ 24,397 ​ 4,076 (1) - ​ 4,489 (1) - ​ 28,886 Segment B-3 ​ Other Investments ​ 5,113 ​ (483) ​ - ​ (266) ​ - ​ 4,847 Segment C-2 ​ Other Investments ​ 94 ​ (18) ​ - ​ (58) ​ - ​ 36 Segment D-5 ​ Other Investments ​ 1,853 ​ (57) ​ - ​ (67) ​ (95) ​ 1,691 ​ ​ Sub-total ​ 31,457 ​ 3,518 ​ - ​ 4,098 ​ (95) ​ 35,460 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-4 ​ Off-Balance Sheet Mortgage Commitments ​ 24 ​ (31) ​ - ​ 7 ​ - ​ 31 Segment B-3 ​ Off-Balance Sheet Note Commitments ​ 2,305 ​ (585) ​ - ​ (1,123) ​ - ​ 1,182 Segment C-2 ​ Off-Balance Sheet Note Commitments ​ 116 ​ (42) ​ - ​ (37) ​ - ​ 79 ​ ​ Sub-total ​ 2,445 ​ (658) ​ - ​ (1,153) ​ - ​ 1,292 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total $ 67,841 $ 3,536 $ - $ 2,512 $ (95) $ 70,258 (1) This provision primarily relates to a $4.5 million reserve recorded on a term loan during the second quarter of 2021. A rollforward of our allowance for credit losses for the six months ended June 30, 2020 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment ​ Financial Statement Line Item Allowance for Credit Loss at December 31, 2019 Allowance for Credit Loss on January 1, 2020 Provision (recovery) for Credit Loss for the three months ended June 30, 2020 Write-offs charged against allowance for the three months ended June 30, 2020 Provision (recovery) for Credit Loss for the six months ended June 30, 2020 Write-offs charged against allowance for the six months ended June 30, 2020 Allowance for Credit Loss as of June 30, 2020 ​ ​ ​ (in thousands) Segment A-4 ​ Mortgage Notes Receivable $ - $ 19,293 $ 2,704 $ - $ 3,774 ​ - $ 23,067 Segment B-3 ​ Mortgage Notes Receivable ​ - ​ 901 ​ (106) ​ - ​ (74) ​ - ​ 827 Segment C-5 ​ Mortgage Notes Receivable ​ - ​ 829 ​ (396) ​ - ​ (409) ​ - ​ 420 Segment E-6 ​ Mortgage Notes Receivable ​ 4,905 ​ 363 ​ (93) ​ - ​ (27) ​ - ​ 5,241 Segment F-2 ​ Mortgage Notes Receivable ​ - ​ - ​ 133 ​ - ​ 133 ​ - ​ 133 ​ ​ Sub-total ​ 4,905 ​ 21,386 ​ 2,242 ​ - ​ 3,397 ​ - ​ 29,688 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-3 ​ Investment in Direct Financing Leases ​ 217 ​ 611 ​ (26) ​ (217) ​ (5) ​ (217) ​ 606 ​ ​ Sub-total ​ 217 ​ 611 ​ (26) ​ (217) ​ (5) ​ (217) ​ 606 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-4 ​ Other Investments ​ - ​ 3,158 ​ (983) ​ - ​ (826) ​ - ​ 2,332 Segment B-3 ​ Other Investments ​ - ​ 1,434 ​ (441) ​ - ​ (412) ​ - ​ 1,022 Segment C-2 ​ Other Investments ​ - ​ 195 ​ (61) ​ - ​ (71) ​ - ​ 124 Segment D-5 ​ Other Investments ​ - ​ 1,901 ​ (705) ​ - ​ (545) ​ - ​ 1,356 ​ ​ Sub-total ​ - ​ 6,688 ​ (2,190) ​ - ​ (1,854) ​ - ​ 4,834 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Segment A-4 ​ Off-Balance Sheet Commitments ​ - ​ 100 ​ (11) ​ - ​ (37) ​ - ​ 63 ​ ​ Sub-total ​ - ​ 100 ​ (11) ​ - ​ (37) ​ - ​ 63 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total $ 5,122 $ 28,785 $ 15 $ (217) $ 1,501 $ (217) $ 35,191
Schedule by segment balance by vintage and credit quality indicator	A summary of our amortized cost basis by year of origination and credit quality indicator is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Rating Financial Statement Line Item 2021 2020 2019 2018 2017 2016 2015 & older Revolving Loans ​ Balance as of June 30, 2021 ​ ​ (in thousands) 1 Mortgage Notes Receivable $ - $ - $ - $ - $ - $ - $ 66,251 $ - ​ $ 66,251 2 Mortgage Notes Receivable ​ - ​ 21,325 ​ - ​ - ​ - ​ - ​ - ​ - ​ ​ 21,325 3 Mortgage Notes Receivable ​ 6,420 ​ - ​ - ​ - ​ - ​ - ​ 35,964 ​ - ​ ​ 42,384 4 Mortgage Notes Receivable ​ 4,307 ​ 89,373 ​ 18,883 ​ 44,374 ​ 46,431 ​ 38,830 ​ 504,110 ​ - ​ ​ 746,308 5 Mortgage Notes Receivable ​ - ​ - ​ - ​ - ​ - ​ - ​ 7,397 ​ - ​ ​ 7,397 6 Mortgage Notes Receivable ​ - ​ - ​ - ​ - ​ - ​ - ​ 6,377 ​ - ​ ​ 6,377 ​ Sub-total ​ 10,727 ​ 110,698 ​ 18,883 ​ 44,374 ​ 46,431 ​ 38,830 ​ 620,099 ​ - ​ ​ 890,042 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 3 Investment in Direct Financing Leases ​ - ​ - ​ - ​ - ​ - ​ - ​ 11,433 ​ - ​ ​ 11,433 ​ Sub-total ​ - ​ - ​ - ​ - ​ - ​ - ​ 11,433 ​ - ​ ​ 11,433 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2 Other Investments ​ - ​ - ​ - ​ - ​ - ​ - ​ 2,082 ​ 10,820 ​ ​ 12,902 3 Other Investments ​ 6,000 ​ - ​ 20,805 ​ 28,602 ​ - ​ - ​ 3,493 ​ 184,588 ​ ​ 243,488 4 Other Investments ​ - ​ - ​ 11,560 ​ 116,608 ​ - ​ 75,590 ​ - ​ 5,000 ​ ​ 208,758 5 Other Investments ​ - ​ - ​ 23,351 ​ 5,625 ​ - ​ - ​ - ​ - ​ ​ 28,976 ​ Sub-total ​ 6,000 ​ - ​ 55,716 ​ 150,835 ​ - ​ 75,590 ​ 5,575 ​ 200,408 ​ ​ 494,124 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total ​ $ 16,727 $ 110,698 $ 74,599 $ 195,209 $ 46,431 $ 114,420 $ 637,107 $ 200,408 ​ $ 1,395,599

VARIABLE INTEREST ENTITIES (Tab

VARIABLE INTEREST ENTITIES (Tables)	6 Months Ended
	Jun. 30, 2021
Variable Interest Entities [Abstract]
Schedule of Variable Interest Entities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2021 ​ December 31, 2020 ​ ​ ​ Agemo Maplewood ​ Agemo Maplewood ​ ​ ​ (in thousands) ​ (in thousands) ​ Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real estate investments – net ​ $ 338,291 ​ 750,953 ​ $ 371,010 $ 750,488 ​ Assets held for sale ​ ​ 14,710 ​ — ​ ​ — ​ — ​ Other investments ​ 34,253 ​ 174,988 ​ ​ 34,253 147,148 ​ Contractual receivables ​ 475 ​ 1,021 ​ ​ 346 887 ​ Straight-line rent receivables ​ — ​ (49,119) ​ ​ — (56,664) ​ Lease inducement ​ ​ — ​ 66,987 ​ ​ — ​ 69,666 ​ Total Assets ​ 387,729 944,830 ​ ​ 405,609 ​ 911,525 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net in-place lease liability ​ ​ — ​ (318) ​ ​ — ​ (331) ​ Security deposit ​ ​ (343) ​ (4,609) ​ ​ — ​ — ​ Contingent liability ​ ​ — ​ (43,915) ​ ​ — ​ (43,915) ​ Total Liabilities ​ (343) (48,842) ​ ​ — ​ (44,246) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Collateral ​ ​ ​ ​ ​ Letters of credit ​ (9,253) ​ — ​ ​ (9,253) — ​ Personal guarantee ​ (8,000) ​ (40,000) ​ ​ (8,000) (40,000) ​ Other collateral ​ (353,001) ​ (750,953) ​ ​ (371,010) (750,488) ​ Total Collateral ​ (370,254) (790,953) ​ ​ (388,263) ​ (790,488) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Maximum exposure to loss ​ $ 17,132 $ 105,035 ​ $ 17,346 $ 76,791 ​
Schedule of Variable Interest Entities revenue	The table below reflects our total revenues from Agemo and Maplewood for the three and six months ended June 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, ​ ​ ​ ​ 2021 ​ 2021 ​ 2020 ​ 2020 ​ 2021 ​ 2021 ​ 2020 ​ 2020 ​ ​ ​ ​ Agemo ​ Maplewood ​ Agemo ​ Maplewood ​ Agemo ​ Maplewood ​ Agemo ​ Maplewood ​ ​ ​ ​ (in thousands) ​ (in thousands) ​ Revenue ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Rental income ​ ​ $ 12,282 ​ $ 19,093 ​ $ 14,814 ​ $ 10,041 ​ $ 23,774 ​ $ 38,125 ​ $ 30,101 ​ $ 20,182 ​ Other investment income ​ ​ 1,178 ​ 3,052 ​ 1,297 ​ 1,202 ​ 2,335 ​ 5,840 ​ 2,538 ​ 2,404 ​ Total (1) ​ ​ $ 13,460 ​ $ 22,145 ​ $ 16,111 ​ $ 11,243 ​ $ 26,109 ​ $ 43,965 ​ $ 32,639 ​ $ 22,586 ​ (1) For the three months ended June 30, 2021 and 2020, we received cash from Agemo of approximately $14.0 million and $13.1 million, respectively, pursuant to our lease and other investment agreements. For the six months ended June 30, 2021 and 2020, we received cash from Agemo of approximately $28.0 million and $26.8 million, respectively, pursuant to our lease and other investment agreements. For the three months ended June 30, 2021 and 2020, we received cash from Maplewood of approximately $19.7 million and $17.2 million, respectively, pursuant to our lease and other investment agreements. For the six months ended June 30, 2021 and 2020, we received cash from Maplewood of approximately $39.0 million and $33.9 million, respectively, pursuant to our lease and other investment agreements.

INVESTMENT IN JOINT VENTUREs (T

INVESTMENT IN JOINT VENTUREs (Tables)	6 Months Ended
	Jun. 30, 2021
INVESTMENTS IN JOINT VENTURES [Abstract]
Schedule of equity method investments	Omega owns an interest in a number of joint ventures that are accounted for under the equity method. These entities and their subsidiaries are not consolidated by the Company because it does not control, through voting rights or other means, the joint venture. The following is a summary of our investments in unconsolidated joint ventures (dollars in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Carrying Amount ​ ​ Ownership ​ Initial Investment ​ ​ ​ ​ Facility ​ Facilities at ​ June 30, ​ December 31, Entity ​ % ​ Date ​ ​ Investment (1) ​ Type ​ 6/30/2021 ​ 2021 2020 Second Spring Healthcare Investments (2) ​ 15% ​ 11/1/2016 ​ $ 50,032 ​ SNF ​ — ​ $ 10,916 $ 17,700 Second Spring II LLC (3) ​ 15% ​ 3/10/2021 ​ ​ 10,330 ​ SNF ​ 1 ​ ​ 2,279 ​ — Lakeway Realty, L.L.C. ​ 51% ​ 5/17/2019 ​ ​ 73,834 ​ Specialty facility ​ 1 ​ ​ 71,831 ​ ​ 72,318 Cindat Joint Venture ​ 49% ​ 12/18/2019 ​ ​ 105,688 ​ ALF ​ 66 ​ ​ 112,656 ​ ​ 110,360 OMG Senior Housing, LLC ​ 50% ​ 12/6/2019 ​ ​ — ​ Specialty facility ​ 1 ​ — ​ — OH CHS SNP, Inc. ​ 9% ​ 12/20/2019 ​ ​ 900 ​ N/A ​ N/A ​ ​ 230 ​ ​ 260 ​ ​ ​ ​ ​ ​ $ 240,784 ​ ​ ​ ​ ​ $ 197,912 ​ $ 200,638 (1) Our initial investment includes our transaction costs, if any. (2) During the first quarter of 2021, this joint venture sold 16 SNFs to an unrelated third party for approximately $328 million in net proceeds and recognized a gain on sale of approximately $102.2 million ( $14.9 million of which represents the Company’s share of the gain). During the first quarter of 2021, this joint venture also sold five SNFs to Second Spring II LLC for approximately $70.8 million in net proceeds. (3) We acquired a 15% interest in Second Spring II LLC for approximately $10.3 million. During the first quarter of 2021, this joint venture acquired five SNFs from Second Spring Healthcare Investments for approximately $70.8 million. During the second quarter of 2021, this joint venture sold four SNFs to an unrelated third party for approximately $50 million in net proceeds and recognized a loss on sale of approximately $0.3 million ( $0.1 million of which represents the Company’s share of the loss). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended June 30, ​ Six Months Ended June 30, Entity ​ 2021 2020 ​ 2021 2020 ​ ​ (in thousands) Second Spring Healthcare Investments (1) ​ $ 293 ​ $ 712 ​ $ 11,704 ​ $ 1,281 Second Spring II LLC ​ ​ (299) ​ ​ — ​ ​ (756) ​ ​ — Lakeway Realty, L.L.C. ​ ​ 641 ​ 613 ​ ​ 1,286 ​ 1,223 Cindat Joint Venture ​ 646 ​ 244 ​ 1,132 ​ 891 OMG Senior Housing, LLC ​ (103) ​ (118) ​ (204) ​ (279) OH CHS SNP, Inc. ​ 9 ​ (49) ​ (145) ​ (154) Total ​ $ 1,187 ​ $ 1,402 ​ $ 13,017 ​ $ 2,962 (1) The income from this unconsolidated joint venture for the six months ended June 30, 2021 includes a $14.9 million gain on sale of real estate investments.

ASSETS HELD FOR SALE (Tables)

ASSETS HELD FOR SALE (Tables)	6 Months Ended
	Jun. 30, 2021
Assets Held for Sale [Abstract]
Schedule of Properties Held-for-Sale	The following is a summary of our assets held for sale: ​ ​ ​ ​ ​ ​ Facilities Held For Sale ​ Number of Facilities ​ (in thousands) December 31, 2020 22 ​ $ 81,452 Facilities sold/other (1) (21) ​ ​ (81,252) Facilities added (2) 5 ​ ​ 7,722 March 31, 2021 6 ​ $ 7,922 Facilities sold/other (1) (5) ​ ​ (1,795) Facilities added (2)(3) 8 ​ ​ 29,208 June 30, 2021 (3) 9 ​ $ 35,335 (1) In the first quarter of 2021, we sold 21 facilities for approximately $187.6 million in net cash proceeds recognizing a net gain on sale of approximately $100.3 million. In the second quarter of 2021, we sold four facilities for approximately $3.5 million in net cash proceeds recognizing a net gain on sale of approximately $1.9 million. One facility classified as held for sale at March 31, 2021 was no longer considered held for sale during the second quarter of 2021 and was reclassified to leased property at approximately $0.2 million which represents the facility’s carrying value. (2) In the first quarter of 2021, we recorded approximately $16.9 million of impairment expense to reduce three facilities’ book value to their estimated fair value less costs to sell before they were reclassified to assets held for sale. In the second quarter of 2021, we recorded approximately $8.8 million of impairment expense to reduce three facilities’ book value to their estimated fair value less costs to sell before they were reclassified to assets held for sale. (3) Number of facilities excludes one parcel of land.

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES (Tables)	6 Months Ended
	Jun. 30, 2021
Goodwill and Other Intangibles [Abstract]
Schedule of Reconciliation of Goodwill	The following is a summary of our goodwill as of June 30, 2021: ​ ​ ​ ​ ​ (in thousands) Balance as of December 31, 2020 ​ $ 651,737 Add: foreign currency translation ​ (40) Balance as of June 30, 2021 ​ $ 651,697
Schedule of Intangibles	The following is a summary of our intangibles as of June 30, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ December 31, ​ ​ 2021 ​ 2020 ​ ​ ​ (in thousands) ​ Assets: ​ ​ ​ ​ Above market leases ​ $ 22,410 ​ $ 22,822 ​ Accumulated amortization ​ (20,638) (20,882) ​ Net above market leases ​ $ 1,772 ​ $ 1,940 ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ Below market leases ​ $ 139,069 ​ $ 139,515 ​ Accumulated amortization ​ (108,508) (100,996) ​ Net below market leases ​ $ 30,561 ​ $ 38,519 ​ ​

STOCKHOLDERS EQUITY (Tables)

STOCKHOLDERS EQUITY (Tables)	6 Months Ended
	Jun. 30, 2021
Stockholders Equity [Abstract]
Schedule of common stock dividends	The Board of Directors has declared cash dividends on common stock as set forth below: ​ ​ ​ ​ ​ ​ Record ​ Payment ​ Dividend per Date Date Common Share February 8, 2021 ​ February 16, 2021 ​ $ 0.67 May 3, 2021 ​ May 17, 2021 ​ ​ 0.67 August 2, 2021 ​ August 13, 2021 ​ ​ 0.67
Schedule of shares issued under ATM Programs	The table below presents information regarding the shares issued under the 2021 and 2015 ATM Programs for the three and six months ended June 30, 2020 and 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Shares issued Average Net Price Gross Proceeds Commissions Net Proceeds ​ Period Ended (in millions) Per Share (1) (in millions) Three Months Ended June 30, 2020 - $ - $ - $ - $ - Three Months Ended June 30, 2021 2.5 ​ 36.23 ​ 92.4 ​ 1.9 ​ 90.5 Six Months Ended June 30, 2020 0.1 ​ 36.18 ​ 2.0 ​ 0.2 ​ 1.8 Six Months Ended June 30, 2021 4.1 ​ 36.60 ​ 153.8 ​ 3.2 ​ 150.6 (1) Represents the average price per share after commissions.
Schedule of dividend reinvestment and common stock purchase plan	The table below presents information regarding the shares issued under the Dividend Reinvestment and Common Stock Purchase Plan for the three and six months ended June 30, 2020 and 2021: ​ ​ ​ ​ ​ ​ ​ Shares issued Gross Proceeds ​ Period Ended (in millions) (in millions) Three Months Ended June 30, 2020 - $ - Three Months Ended June 30, 2021 1.6 ​ 61.8 Six Months Ended June 30, 2020 0.1 ​ 3.7 Six Months Ended June 30, 2021 2.0 ​ 77.3
Schedule of accumulated other comprehensive income (loss)	The following is a summary of our accumulated other comprehensive income (loss), net of tax where applicable: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of and for the As of and for the ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2021 2020 2021 2020 ​ ​ (in thousands) ​ Foreign Currency Translation: ​ ​ ​ ​ ​ ​ Beginning balance ​ $ (14,231) ​ $ (67,058) ​ $ (18,427) ​ $ (35,100) ​ Translation gain (loss) ​ 601 ​ (1,738) ​ 4,131 ​ (33,626) ​ Realized gain (loss) ​ 22 ​ 1 ​ 688 ​ (69) ​ Ending balance ​ (13,608) ​ (68,795) ​ (13,608) ​ (68,795) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivative Instruments: ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash flow hedges: ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ 53,519 ​ (10,213) ​ 17,718 ​ (2,369) ​ Unrealized (loss) gain ​ (20,900) ​ 1,704 ​ 14,291 ​ (5,823) ​ Realized gain (loss) (1) ​ 733 ​ ​ (1,190) ​ 1,343 ​ ​ (1,507) ​ Ending balance ​ 33,352 ​ (9,699) ​ 33,352 ​ (9,699) ​ Net investment hedges: ​ ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ (16,341) ​ 8,767 ​ (13,331) ​ (4,420) ​ Unrealized gain (loss) ​ 317 ​ 766 ​ (2,693) ​ 13,953 ​ Ending balance ​ (16,024) ​ 9,533 ​ (16,024) ​ 9,533 ​ Total accumulated other comprehensive income (loss) before noncontrolling interest ​ 3,720 ​ (68,961) ​ 3,720 ​ (68,961) ​ Add: portion included in noncontrolling interest ​ 803 ​ 2,726 ​ 803 ​ 2,726 ​ Total accumulated other comprehensive income (loss) for Omega ​ $ 4,523 ​ $ (66,235) ​ $ 4,523 ​ $ (66,235) ​ (1) Recorded in interest expense on the Consolidated Statements of Operations.

TAXES (Tables)

TAXES (Tables)	6 Months Ended
	Jun. 30, 2021
Taxes [Abstract]
Schedule of components of income tax expense	The following is a summary of our provision for income taxes: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Six Months Ended ​ June 30, June 30, ​ ​ 2021 2020 2021 2020 ​ ​ (in millions) Provision for federal, state and local income taxes ​ $ 0.3 $ 0.2 $ 0.6 $ 0.6 Provision for foreign income taxes ​ ​ 0.6 ​ 0.7 ​ 1.3 ​ 1.3 Total provision for income taxes (1) ​ $ 0.9 ​ $ 0.9 ​ $ 1.9 ​ $ 1.9 (1) The above amounts do not include gross receipts or franchise taxes payable to certain states and municipalities.

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables)	6 Months Ended
	Jun. 30, 2021
Stock-Based Compensation [Abstract]
Schedule of Stock-based Compensation Expense	The following is a summary of our stock-based compensation expense for the three and six months ended June 30, 2021 and 2020, respectively. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Six Months Ended ​ ​ June 30, June 30, ​ 2021 2020 2021 2020 ​ (in thousands) ​ Stock-based compensation expense $ 5,811 $ 4,623 $ 11,207 $ 9,258

BORROWING ACTIVITIES AND ARRA_2

BORROWING ACTIVITIES AND ARRANGEMENTS (Tables)	6 Months Ended
	Jun. 30, 2021
BORROWING ACTIVITIES AND ARRANGEMENTS [Abstract]
Schedule of Borrowings	The following is a summary of our borrowings: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Annual ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest Rate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ as of ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, ​ June 30, ​ December 31, ​ ​ Net Proceeds Maturity 2021 2021 2020 ​ ​ (in millions) ​ ​ (in thousands) ​ Secured borrowings ​ ​ ​ HUD mortgages (1)(2) ​ ​ ​ 2046 - 2052 ​ 3.01 % $ 363,556 ​ $ 367,249 ​ Term loan (3) ​ 2022 3.75 % ​ 2,275 ​ ​ 2,275 ​ Total secured borrowings ​ ​ ​ ​ ​ ​ ​ ​ 365,831 ​ ​ 369,524 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Unsecured borrowings ​ ​ ​ ​ Revolving borrowings: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2017 Revolving credit facility (4) ​ N/A N/A ​ — ​ 101,158 ​ Revolving credit facility (4) ​ 2025 1.30 % — ​ — ​ Total revolving borrowings ​ ​ ​ ​ ​ ​ ​ ​ — ​ ​ 101,158 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Senior notes and other unsecured borrowings: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2023 notes (4)(5) $ 692.0 2023 4.375 % 350,000 ​ 700,000 ​ 2024 notes (4) ​ 394.3 2024 4.950 % 400,000 ​ 400,000 ​ 2025 notes (4) ​ 397.7 2025 4.500 % 400,000 ​ 400,000 ​ 2026 notes (4) ​ 594.4 2026 5.250 % 600,000 ​ 600,000 ​ 2027 notes (4) ​ 683.0 2027 4.500 % 700,000 ​ 700,000 ​ 2028 notes (4) ​ 540.8 2028 4.750 % 550,000 ​ 550,000 ​ 2029 notes (4) ​ 487.8 2029 3.625 % 500,000 ​ 500,000 ​ 2031 notes (4) ​ 680.5 ​ 2031 ​ 3.375 % ​ 700,000 ​ ​ 700,000 ​ 2033 notes (4)(6) ​ 689.3 ​ 2033 ​ 3.250 % ​ 700,000 ​ ​ — ​ Subordinated debt (2) ​ 2021 9.000 % 20,000 ​ 20,000 ​ Sterling term loan (4)(7) ​ N/A N/A ​ — ​ 136,700 ​ 2017 OP term loan (8) ​ N/A N/A ​ — ​ 50,000 ​ OP term loan (8) ​ 2025 3.29 % 50,000 ​ — ​ Deferred financing costs – net ​ ​ (29,326) ​ (26,421) ​ Discount – net ​ (33,940) ​ (31,709) ​ Total senior notes and other unsecured borrowings – net ​ 4,906,734 ​ 4,698,570 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total unsecured borrowings – net ​ 4,906,734 ​ 4,799,728 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total secured and unsecured borrowings – net (9)(10) ​ $ 5,272,565 ​ $ 5,169,252 ​ (1) Reflects the weighted average annual contractual interest rate on the mortgages at June 30, 2021. Secured by real estate assets with a net carrying value of $558.0 million as of June 30, 2021. (2) Wholly owned subsidiaries of Omega OP are the obligor on these borrowings. (3) Borrowing is the debt of a consolidated joint venture. (4) Guaranteed by Omega OP. (5) In March 2021, we used a portion of the proceeds from the 2033 Senior Notes offering to fund the tender offer to purchase $350 million of the 4.375% Senior Notes due 2023 . In connection with this transaction, we recorded approximately $29.7 million in related fees, premiums, and expenses which were recorded as Loss on debt extinguishment in our Consolidated Statement of Operations. (6) We used the proceeds from this offering to pay down outstanding borrowings on the 2017 Revolving Credit Facility, repay the Sterling term loan, and fund the tender offer to purchase $350 million of the 4.375% Senior Notes due 2023 and the payment of accrued interest and related fees, premiums and expenses. (7) Actual borrowing is in GBP and remeasured to USD. The Sterling term loan was settled in March 2021 using proceeds from the 3.250% 2033 Senior Notes offering. (8) Omega OP is the obligor on this borrowing. (9) All borrowings are direct borrowings of Parent unless otherwise noted. (10) Certain of our other secured and unsecured borrowings are subject to customary affirmative and negative covenants, including financial covenants. As of June 30, 2021 and December 31, 2020, we were in compliance with all affirmative and negative covenants, including financial covenants, for our secured and unsecured borrowings.

FINANCIAL INSTRUMENTS (Tables)

FINANCIAL INSTRUMENTS (Tables)	6 Months Ended
	Jun. 30, 2021
Financial Instruments [Abstract]
Schedule of Financial Instruments	At June 30, 2021 and December 31, 2020, the net carrying amounts and fair values of our other financial instruments were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2021 ​ December 31, 2020 ​ Carrying Fair Carrying Fair ​ Amount Value Amount Value ​ ​ (in thousands) Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Investments in direct financing leases – net ​ $ 10,807 ​ $ 10,807 $ 10,764 ​ $ 10,764 Mortgage notes receivable – net ​ 857,162 ​ ​ 897,342 ​ ​ 885,313 ​ ​ 924,353 Other investments – net ​ 458,664 ​ ​ 466,690 ​ ​ 467,442 ​ ​ 474,552 Total ​ $ 1,326,633 ​ $ 1,374,839 ​ $ 1,363,519 ​ $ 1,409,669 Liabilities: ​ ​ ​ ​ 2017 Revolving credit facility ​ $ — ​ $ — $ 101,158 ​ $ 101,158 Revolving credit facility ​ ​ — ​ ​ — ​ — ​ ​ — Term loan ​ ​ 2,275 ​ ​ 2,275 ​ ​ 2,275 ​ ​ 2,275 Sterling term loan ​ — ​ ​ — ​ ​ 136,453 ​ ​ 136,700 2017 OP term loan ​ — ​ ​ — ​ ​ 49,896 ​ ​ 50,000 OP Term loan ​ 49,616 ​ ​ 50,000 ​ ​ — ​ ​ — 4.375% notes due 2023 – net ​ 348,816 ​ ​ 379,284 ​ ​ 696,981 ​ ​ 770,635 4.95% notes due 2024 – net ​ 397,219 ​ ​ 442,023 ​ ​ 396,714 ​ ​ 441,194 4.50% notes due 2025 – net ​ 397,305 ​ ​ 444,675 ​ ​ 396,924 ​ ​ 444,652 5.25% notes due 2026 – net ​ 596,790 ​ ​ 697,838 ​ ​ 596,437 ​ ​ 697,993 4.50% notes due 2027 – net ​ 691,642 ​ ​ 790,201 ​ ​ 690,909 ​ ​ 794,294 4.75% notes due 2028 – net ​ 543,404 ​ ​ 627,615 ​ ​ 542,899 ​ ​ 633,950 3.625% notes due 2029 – net ​ ​ 490,076 ​ ​ 538,108 ​ ​ 489,472 ​ ​ 532,248 3.375% notes due 2031 – net ​ ​ 682,697 ​ ​ 721,067 ​ ​ 681,802 ​ ​ 731,541 3.25% notes due 2033 – net ​ ​ 689,128 ​ ​ 698,804 ​ ​ — ​ ​ — HUD mortgages – net ​ ​ 363,556 ​ ​ 396,266 ​ ​ 367,249 ​ ​ 409,004 Subordinated debt – net ​ 20,041 ​ ​ 20,799 ​ ​ 20,083 ​ ​ 21,599 Total ​ $ 5,272,565 ​ $ 5,808,955 ​ $ 5,169,252 ​ $ 5,767,243

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	6 Months Ended
	Jun. 30, 2021
COMMITMENTS AND CONTINGENCIES [Abstract]
Schedule of remaining commitments	We expect the funding of these commitments to be completed over the next several years. Our remaining commitments at June 30, 2021, are outlined in the table below (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total commitments $ 539,528 ​ ​ Amounts funded to date (1) ​ (415,281) ​ ​ Remaining commitments (2) ​ $ 124,247 ​ ​ (1) Includes finance costs. (2) This amount excludes our remaining commitments to fund under our other investments of approximately $67.6 million.

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings per Share [Abstract]
Schedule of Computation of Basic and Diluted Earnings per Share	The following tables set forth the computation of basic and diluted earnings per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Six Months Ended ​ ​ June 30, June 30, ​ ​ 2021 2020 2021 2020 ​ ​ (in thousands, except per share amounts) ​ Numerator: ​ ​ ​ ​ ​ ​ Net income ​ $ 86,863 ​ $ 101,960 ​ $ 251,229 ​ $ 194,239 ​ Deduct: net income attributable to noncontrolling interests ​ (2,340) ​ (2,653) ​ (6,728) ​ (5,017) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income available to common stockholders ​ $ 84,523 ​ $ 99,307 ​ $ 244,501 ​ $ 189,222 ​ Denominator: ​ ​ ​ ​ ​ Denominator for basic earnings per share ​ 236,229 ​ 227,411 ​ 234,401 ​ 227,336 ​ Effect of dilutive securities: ​ ​ ​ ​ ​ ​ ​ Common stock equivalents ​ 1,130 ​ 1,030 ​ 1,037 ​ 1,146 ​ Noncontrolling interest – Omega OP Units ​ 6,549 ​ 6,082 ​ 6,470 ​ 6,033 ​ Denominator for diluted earnings per share ​ 243,908 ​ 234,523 ​ 241,908 ​ 234,515 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Earnings per share - basic: ​ ​ ​ ​ ​ Net income available to common stockholders ​ $ 0.36 ​ $ 0.44 ​ $ 1.04 ​ $ 0.83 ​ Earnings per share – diluted: ​ ​ ​ ​ ​ ​ ​ ​ ​ Net income ​ $ 0.36 ​ $ 0.43 ​ $ 1.04 ​ $ 0.83 ​

SUPPLEMENTAL DISCLOSURE TO CO_2

SUPPLEMENTAL DISCLOSURE TO CONSOLIDATED STATEMENTS OF CASH FLOWS (Tables)	6 Months Ended
	Jun. 30, 2021
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of Cash Flow Supplemental Disclosures	The following are supplemental disclosures to the consolidated statements of cash flows for the six months ended June 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended June 30, ​ ​ 2021 2020 ​ (in thousands) ​ Reconciliation of cash and cash equivalents and restricted cash: ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 100,824 ​ $ 37,022 ​ Restricted cash ​ 3,736 ​ 4,543 ​ Cash, cash equivalents and restricted cash at end of period ​ $ 104,560 ​ $ 41,565 ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental information: ​ ​ ​ ​ ​ Interest paid during the period, net of amounts capitalized ​ $ 105,634 ​ $ 112,035 ​ Taxes paid during the period ​ $ 3,072 ​ $ 4,497 ​ ​ ​ ​ ​ ​ ​ ​ ​ Non cash investing activities ​ ​ ​ Non cash proceeds from sale of real estate investments ​ $ — ​ $ 83,910 ​ Non cash placement of mortgages ​ $ (1,000) ​ $ (86,936) ​ Non cash proceeds from other investments ​ $ 1,000 ​ $ 3,026 ​ ​ ​ ​ ​ ​ ​ ​ ​ Non cash financing activities ​ ​ ​ Non cash borrowing of other long-term borrowings ​ $ — ​ $ 6,459 ​ Change in fair value of cash flow hedges ​ $ 17,869 ​ $ (7,329) ​ Remeasurement of debt denominated in a foreign currency ​ $ 3,010 ​ $ (13,953) ​

BASIS OF PRESENTATION AND SIG_3

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Detail) $ / shares in Units, £ in Millions	1 Months Ended			3 Months Ended		6 Months Ended
	Mar. 31, 2021USD ($)	Mar. 31, 2021GBP (£)	Mar. 31, 2021contract	Jun. 30, 2021USD ($)facility$ / shares	Jun. 30, 2020USD ($)$ / shares	Jun. 30, 2021USD ($)facilitysegment$ / shares	Jun. 30, 2020USD ($)$ / shares	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Basis Of Presentation And Significant Accounting Policies [Line Items]
Number of reportable segment | segment						1
Impairment of Real Estate				$ 8,822,000	$ 11,988,000	$ 37,511,000	$ 15,627,000
Special cash dividend (per share) | $ / shares				$ 0.67	$ 0.67	$ 1.34	$ 1.34
Rental income				$ 220,955,000	$ 221,532,000	$ 458,716,000	$ 443,032,000
Real estate tax expense				3,001,000	3,655,000	5,730,000	7,321,000
Retained earnings (accumulated deficit)				2,839,236,000		2,839,236,000		$ 2,594,735,000
Lease inducements				79,506,000		79,506,000		83,425,000
Financing receivable, allowance for credit losses				$ 70,258,000	$ 35,191,000	$ 70,258,000	$ 35,191,000	67,841,000	$ 28,785,000
Number of real estate properties | facility				970		970
Real estate investments - net				$ 7,089,232,000		$ 7,089,232,000		6,705,240,000
Interest receivable				$ 11,554,000		$ 11,554,000		12,195,000
Notional amount of nonderivative instruments | £		£ 174
Derivative instrument discontinued hedge accounting reclassification period						10 years
Number of foreign currency forwards entered into	4		4
Omega OP
Basis Of Presentation And Significant Accounting Policies [Line Items]
Ownership by parent				97.00%		97.00%
Ownership by noncontrolling interest				3.00%		3.00%
Cash Flow Hedging [Member] | Other Assets [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]
Cash flow hedges recorded at fair value, asset				$ 34,100,000		$ 34,100,000		17,000,000
Cash Flow Hedging [Member] | Accounts Payable and Accrued Liabilities [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]
Cash flow hedges recorded at fair value, liability				500,000		500,000		$ 1,000,000
Net Investment Hedging [Member]
Basis Of Presentation And Significant Accounting Policies [Line Items]
Net investment hedge recorded in other assets				$ 300,000		$ 300,000
Notional amount of nonderivative instruments | £		£ 174

PROPERTIES AND INVESTMENTS (Lea

PROPERTIES AND INVESTMENTS (Leased Property) (Narrative) (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2021USD ($)facility
Number of real estate properties	970
Payments to acquire businesses, gross | $	$ 594.4
Skilled Nursing Facilities [Member] | Facilities Leased
Number of real estate properties	728
Assisted Living Facilities [Member] | Facilities Leased
Number of real estate properties	132
Specialty [Member] | Facilities Leased
Number of real estate properties	35
Medical Office Building [Member] | Facilities Leased
Number of real estate properties	2

PROPERTIES AND INVESTMENTS (Sum

PROPERTIES AND INVESTMENTS (Summary of our investment in leased real estate properties) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total real estate investments	$ 9,228,332	$ 8,702,154
Less accumulated depreciation	(2,139,100)	(1,996,914)
Real estate investments - net	7,089,232	6,705,240
Building [Member]
Property, Plant and Equipment [Line Items]
Total real estate investments	7,424,693	6,961,509
Land [Member]
Property, Plant and Equipment [Line Items]
Total real estate investments	941,672	883,765
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Total real estate investments	533,169	518,664
Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Total real estate investments	328,765	308,087
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Total real estate investments	$ 33	$ 30,129

PROPERTIES AND INVESTMENTS (Sch

PROPERTIES AND INVESTMENTS (Schedule of operating lease income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating Lease, Lease Income [Abstract]
Rental income - operating leases	$ 218,247	$ 217,620	$ 453,309	$ 435,960
Variable lease income - operating leases	2,708	3,912	5,407	7,072
Total rental income	$ 220,955	$ 221,532	$ 458,716	$ 443,032

PROPERTIES AND INVESTMENTS (S_2

PROPERTIES AND INVESTMENTS (Schedule of Significant Acquisitions) (Detail) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2021USD ($)facility	Jun. 30, 2021USD ($)facilityproperty	Jan. 20, 2021facility
Real Estate Properties [Line Items]
Number of real estate properties		970
Payments to acquire businesses, gross | $		$ 594.4
Arizona California Florida Illinois New Jersey Oregon Pennsylvania Tennessee Texas Virginia And Washington [Member]
Real Estate Properties [Line Items]
Payments to acquire businesses, gross | $	$ 511.3
Initial Annual Cash Yield (%)	8.43%
FL
Real Estate Properties [Line Items]
Payments to acquire businesses, gross | $	$ 83.1
Initial Annual Cash Yield (%)	9.25%
One Parcel of Land
Real Estate Properties [Line Items]
Payment to acquire land | $		$ 10.4
Skilled Nursing Facilities [Member]
Real Estate Properties [Line Items]
Number of real estate properties		729
Assisted Living Facilities [Member]
Real Estate Properties [Line Items]
Number of real estate properties		132
Specialty [Member]
Real Estate Properties [Line Items]
Number of real estate properties | property		35
Medical Office Building [Member]
Real Estate Properties [Line Items]
Number of real estate properties		2
Facilities Acquired
Real Estate Properties [Line Items]
Number of real estate properties			24
Facilities Acquired | Skilled Nursing Facilities [Member]
Real Estate Properties [Line Items]
Number of real estate properties		6
Facilities Acquired | Skilled Nursing Facilities [Member] | FL
Real Estate Properties [Line Items]
Number of real estate properties	6
Facilities Acquired | Assisted Living Facilities [Member]
Real Estate Properties [Line Items]
Number of real estate properties		17
Facilities Acquired | Assisted Living Facilities [Member] | Arizona California Florida Illinois New Jersey Oregon Pennsylvania Tennessee Texas Virginia And Washington [Member]
Real Estate Properties [Line Items]
Number of real estate properties	17
Facilities Acquired | Specialty [Member]
Real Estate Properties [Line Items]
Number of real estate properties		7
Facilities Acquired | Specialty [Member] | Arizona California Florida Illinois New Jersey Oregon Pennsylvania Tennessee Texas Virginia And Washington [Member]
Real Estate Properties [Line Items]
Number of real estate properties	7
Parcel Acquired | One Parcel of Land
Real Estate Properties [Line Items]
Number of real estate properties | property		1

PROPERTIES AND INVESTMENTS (Ass

PROPERTIES AND INVESTMENTS (Asset Sales and Impairments) (Narrative) (Detail) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2021USD ($)facilityproperty	Mar. 31, 2021USD ($)facilityproperty	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)facilityproperty	Jun. 30, 2020USD ($)
Number of real estate properties | facility	970			970
Impairment on real estate properties	$ 8,822		$ 11,988	$ 37,511	$ 15,627
Receipts from insurance proceeds				$ 3,493	$ 346
Facilities with Impairment Charges and Classified to Assets Held for Sale [Member]
Number of real estate properties | facility		3
4 Facilities
Impairment on real estate properties		$ 28,700
4 Facilities | Facilities With Impairment Charges [Member]
Number of real estate properties | facility		4
6 Facilities
Amount of gain (loss) from sale of facilities	4,100
Total cash proceeds	$ 12,900
6 Facilities | Facilities Sold
Number of real estate properties | property	6			6
3 Facilities
Impairment on real estate properties	$ 8,800
3 Facilities | Facilities With Impairment Charges [Member]
Number of real estate properties | property	3			3
3 Facilities | Facilities with Impairment Charges and Classified to Assets Held for Sale [Member]
Number of real estate properties | property	3			3
24 Facilities
Amount of gain (loss) from sale of facilities		$ 100,300
Total cash proceeds		$ 188,300
24 Facilities | Facilities Sold
Number of real estate properties | property		24

CONTRACTUAL RECEIVABLES AND O_3

CONTRACTUAL RECEIVABLES AND OTHER RECEIVABLES AND LEASE INDUCEMENTS (Narrative) (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021USD ($)facility	Mar. 31, 2021USD ($)	Jun. 30, 2021USD ($)facilityitem	Jun. 30, 2020	Dec. 31, 2020USD ($)
Contractual receivables - net	$ 10,948		$ 10,948		$ 10,408
Number of real estate properties | facility	970		970
Number of operators placed on a cash basis | item			2
Unsecured Debt [Member] | Subordinated debt
Long-term debt, gross	$ 20,000		$ 20,000		$ 20,000
One Operator Placed On Cash Basis [Member]
Security deposit used against uncollected receivables	2,500		2,500
Two Operators Placed on Cash Basis [Member]
Contractual receivables - net	3,500		$ 3,500
Two Operators Placed on Cash Basis [Member] | Revenue, Product and Service Benchmark [Member] | Customer Concentration Risk [Member]
Concentration risk, percentage			3.00%	3.00%
One of Two Operators Placed On Cash Basis [Member] | Unsecured Debt [Member] | Subordinated debt
Long-term debt, gross	20,000		$ 20,000
One Facility Transitioned and Two Operators Placed On Cash Basis
Provision of of straight-line rent and contractual receivables	$ 17,400	$ 2,700
One Facility Being Transitioned [Member]
Number of real estate properties | facility	1		1

CONTRACTUAL RECEIVABLES AND O_4

CONTRACTUAL RECEIVABLES AND OTHER RECEIVABLES AND LEASE INDUCEMENTS (Schedule of Net Accounts Receivable) (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
CONTRACTUAL RECEIVABLES AND OTHER RECEIVABLES AND LEASE INDUCEMENTS [Abstract]
Contractual receivables - net	$ 10,948	$ 10,408
Effective yield interest receivables	11,554	12,195
Straight-line rent receivables	138,449	139,046
Lease inducements	79,506	83,425
Other receivables and lease inducements	$ 229,509	$ 234,666

MORTGAGE NOTES RECEIVABLE (Narr

MORTGAGE NOTES RECEIVABLE (Narrative) (Detail)	6 Months Ended
	Jun. 30, 2021facilitystatepropertyitementity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate properties	970
Number of states | state	42
Skilled Nursing Facilities [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate properties	729
Assisted Living Facilities [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate properties	132
Facilities Under Fixed Rate Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate properties	63
Facilities Under Fixed Rate Mortgage Loans [Member] | Skilled Nursing Facilities [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate properties | property	58
Facilities Under Fixed Rate Mortgage Loans [Member] | Assisted Living Facilities [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate properties | property	3
Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of fixed rate mortgage | item	7
Number of states | state	7
Number of independent healthcare operating companies operating under mortgage notes receivable | entity	6

MORTGAGE NOTES RECEIVABLE (Sche

MORTGAGE NOTES RECEIVABLE (Schedule of Receivables) (Detail) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021USD ($)facilitycontract	Jun. 30, 2021USD ($)facilitycontract	Dec. 31, 2020USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable	$ 1,395,599	$ 1,395,599
Number of real estate properties | facility	970	970
Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable	$ 890,042	$ 890,042	$ 918,558
Allowance for credit losses	(32,880)	(32,880)	(33,245)
Total mortgages - net	857,162	857,162	885,313
Mortgage Loans on Real Estate	857,162	857,162	885,313
Mortgage Receivable [Member] | Mortgage Note Due 2027 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable	112,500	$ 112,500	112,500
Mortgage loans on real estate, interest rate		10.81%
Maturity year		2027
Mortgage Receivable [Member] | Mortgage Note Due 2029 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable	655,133	$ 655,133	670,015
Mortgage loans on real estate, interest rate		10.59%
Maturity year		2029
Mortgage Receivable [Member] | 2 Mortgage Notes Due Through 2021 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans on real estate, number of loans | contract		2
Mortgage Receivable [Member] | Other Mortgage Notes Member
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable	$ 122,409	$ 122,409	$ 136,043
Minimum [Member] | Other Mortgage Notes Member
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity year		2023
Maximum [Member] | Other Mortgage Notes Member
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity year		2032
Weighted Average [Member] | Other Mortgage Notes Member
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans on real estate, interest rate		9.38%
Construction Loans [Member] | Mortgage Receivable [Member] | One Mortgage Note Due Through 2021 Extended To 2029 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity year	2029
Mortgage loans on real estate, number of loans | contract	1
Construction Loans [Member] | Mortgage Receivable [Member] | One Mortgage Note Due 2021 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable	$ 13,900	$ 13,900
Construction Loans [Member] | Minimum [Member] | Mortgage Receivable [Member] | One Mortgage Note Due Through 2021 Extended To 2029 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity year	2021
Facility Mortgage [Member] | Mortgage Receivable [Member] | One Mortgage Note Due 2021 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage notes receivable	$ 21,300	$ 21,300
Facilities Used in Weighted Average Interest Rate [Member] | Mortgage Receivable [Member] | Mortgage Note Due 2029 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of real estate properties | facility	46	46

OTHER INVESTMENTS (Schedule of

OTHER INVESTMENTS (Schedule of Receivables) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Schedule of Investments [Line Items]
Other investments, gross	$ 1,395,599
Total other investments	458,664	$ 467,442
Other Investment Receivables [Member]
Schedule of Investments [Line Items]
Other investments, gross	494,124	498,899
Allowance for credit losses	(35,460)	(31,457)
Other Investment Note Due 2024 [Member]
Schedule of Investments [Line Items]
Other investments, gross	$ 87,145	83,636
Maturity year	2024
Other Investment Note Due 2024 Through 2025 [Member]
Schedule of Investments [Line Items]
Other investments, gross	$ 56,987	56,987
Other Investment Note Due 2023 [Member]
Schedule of Investments [Line Items]
Other investments, gross	$ 42,603	49,973
Interest rate	12.00%
Maturity year	2023
Other Investments Note Due 2030 [Member]
Schedule of Investments [Line Items]
Other investments, gross	$ 174,988	147,148
Interest rate	7.00%
Maturity year	2030
Other investment notes outstanding
Schedule of Investments [Line Items]
Other investments, gross	$ 132,401	$ 161,155
Minimum [Member] | Other Investment Note Due 2024 Through 2025 [Member]
Schedule of Investments [Line Items]
Maturity year	2024
Minimum [Member] | Other investment notes outstanding
Schedule of Investments [Line Items]
Maturity year	2021
Maximum [Member] | Other Investment Note Due 2024 Through 2025 [Member]
Schedule of Investments [Line Items]
Maturity year	2025
Maximum [Member] | Other investment notes outstanding
Schedule of Investments [Line Items]
Maturity year	2028
Weighted Average [Member] | Other Investment Note Due 2024 [Member]
Schedule of Investments [Line Items]
Interest rate	13.13%
Weighted Average [Member] | Other Investment Note Due 2024 Through 2025 [Member]
Schedule of Investments [Line Items]
Interest rate	8.12%
Weighted Average [Member] | Other investment notes outstanding
Schedule of Investments [Line Items]
Interest rate	8.37%

OTHER INVESTMENTS (Notes Due 20

OTHER INVESTMENTS (Notes Due 2024 Narrative) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021	Dec. 31, 2020	Mar. 06, 2018	Jul. 29, 2016
Schedule of Investments [Line Items]
Other investments, gross	$ 1,395,599		$ 1,395,599
Other investments	458,664		458,664			$ 467,442
Provision (Recovery) for Credit Losses	3,536	$ 15	2,512	$ 1,501
Other Investment Note Due 2024 [Member]
Schedule of Investments [Line Items]
Other investments, gross	87,145		87,145			$ 83,636
Genesis Healthcare [Member] | Other Investment Note Due 2024 [Member]
Schedule of Investments [Line Items]
Debt instrument, interest rate, stated percentage							14.00%
Investment Owned, Face Amount							$ 48,000	$ 48,000
Other investments	68,200		68,200
Loans Receivable Interest Paid-In-Kind							9.00%
Investment Maturity Date					Jan. 1, 2024		Jul. 29, 2020
Genesis Healthcare [Member] | Other Investment Note Due 2024 Second Loan [Member]
Schedule of Investments [Line Items]
Debt instrument, interest rate, stated percentage							10.00%
Investment Owned, Face Amount							$ 16,000
Other investments	$ 18,900		$ 18,900
Loans Receivable Interest Paid-In-Kind							5.00%
Investment Maturity Date					Jan. 1, 2024		Jul. 29, 2020

ALLOWANCE FOR CREDIT LOSSES (Na

ALLOWANCE FOR CREDIT LOSSES (Narrative) (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Receivables [Abstract]
Accrued investment income receivable	$ 10,200
Effective yield interest receivables	$ 11,554	$ 12,195

ALLOWANCE FOR CREDIT LOSSES (Sc

ALLOWANCE FOR CREDIT LOSSES (Schedule of expected credit loss per segment) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			$ 67,841	$ 28,785
Provision (Recovery) for Credit Losses	$ 3,536	$ 15	2,512	1,501
Write-offs charged against allowance for the period ended		(217)	(95)	(217)
ECL Ending balance	70,258	35,191	70,258	35,191
Off Balance Financing Receivable Segment [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			2,445	100
Provision (Recovery) for Credit Losses	(658)	(11)	(1,153)	(37)
ECL Ending balance	1,292	63	1,292	63
Mortgage Receivable [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			33,245	21,386
Provision (Recovery) for Credit Losses	738	2,242	(365)	3,397
ECL Ending balance	32,880	29,688	32,880	29,688
Direct Financing Receivable [Member] | Finance Leases Portfolio Segment [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			694	611
Provision (Recovery) for Credit Losses	(62)	(26)	(68)	(5)
Write-offs charged against allowance for the period ended		(217)		(217)
ECL Ending balance	626	606	626	606
Other Investment Receivables [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			31,457	6,688
Provision (Recovery) for Credit Losses	3,518	(2,190)	4,098	(1,854)
Write-offs charged against allowance for the period ended			(95)
ECL Ending balance	35,460	4,834	35,460	4,834
Previously Reported [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance				5,122
Previously Reported [Member] | Mortgage Receivable [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance				4,905
Previously Reported [Member] | Direct Financing Receivable [Member] | Finance Leases Portfolio Segment [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance				217
Internal Credit Rating Two [Member] | Off Balance Sheet Financing Receivable Segment Note Commitment [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			116
Provision (Recovery) for Credit Losses	(42)		(37)
ECL Ending balance	79		79
Internal Credit Rating Two [Member] | Mortgage Receivable [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			88
Provision (Recovery) for Credit Losses	(8)	133	(53)	133
ECL Ending balance	35	133	35	133
Internal Credit Rating Two [Member] | Other Investment Receivables [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			94	195
Provision (Recovery) for Credit Losses	(18)	(61)	(58)	(71)
ECL Ending balance	36	124	36	124
Internal Credit Rating Three [Member] | Off Balance Sheet Financing Receivable Segment Note Commitment [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			2,305
Provision (Recovery) for Credit Losses	(585)		(1,123)
ECL Ending balance	1,182		1,182
Internal Credit Rating Three [Member] | Mortgage Receivable [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			954	901
Provision (Recovery) for Credit Losses	61	(106)	23	(74)
ECL Ending balance	977	827	977	827
Internal Credit Rating Three [Member] | Direct Financing Receivable [Member] | Finance Leases Portfolio Segment [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			694	611
Provision (Recovery) for Credit Losses	(62)	(26)	(68)	(5)
Write-offs charged against allowance for the period ended		(217)		(217)
ECL Ending balance	626	606	626	606
Internal Credit Rating Three [Member] | Other Investment Receivables [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			5,113	1,434
Provision (Recovery) for Credit Losses	(483)	(441)	(266)	(412)
ECL Ending balance	4,847	1,022	4,847	1,022
Internal Credit Rating Three [Member] | Previously Reported [Member] | Direct Financing Receivable [Member] | Finance Leases Portfolio Segment [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance				217
Internal Credit Rating Four [Member] | Off Balance Sheet Financing Receivable Segment Mortgage Commitment [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			24	100
Provision (Recovery) for Credit Losses	(31)	(11)	7	(37)
ECL Ending balance	31	63	31	63
Internal Credit Rating Four [Member] | Mortgage Receivable [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			26,865	19,293
Provision (Recovery) for Credit Losses	793	2,704	(120)	3,774
ECL Ending balance	26,745	23,067	26,745	23,067
Internal Credit Rating Four [Member] | Other Investment Receivables [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			24,397	3,158
Provision (Recovery) for Credit Losses	4,076	(983)	4,489	(826)
ECL Ending balance	28,886	2,332	28,886	2,332
Internal Credit Rating Five [Member] | Mortgage Receivable [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			433	829
Provision (Recovery) for Credit Losses	(108)	(396)	(215)	(409)
ECL Ending balance	218	420	218	420
Internal Credit Rating Five [Member] | Other Investment Receivables [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			1,853	1,901
Provision (Recovery) for Credit Losses	(57)	(705)	(67)	(545)
Write-offs charged against allowance for the period ended			(95)
ECL Ending balance	1,691	1,356	1,691	1,356
Internal Credit Rating Six [Member] | Mortgage Receivable [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance			4,905	363
Provision (Recovery) for Credit Losses		(93)		(27)
ECL Ending balance	$ 4,905	$ 5,241	$ 4,905	5,241
Internal Credit Rating Six [Member] | Previously Reported [Member] | Mortgage Receivable [Member]
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
ECL Beginning balance				$ 4,905

ALLOWANCE FOR CREDIT LOSSES (_2

ALLOWANCE FOR CREDIT LOSSES (Schedule by segment balance by vintage and credit quality indicator) (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
2021	$ 16,727
2020	110,698
2019	74,599
2018	195,209
2017	46,431
2016	114,420
2015 & older	637,107
Revolving Loans	200,408
Total Balance at June 30, 2021	1,395,599
Mortgage Receivable [Member]
2021	10,727
2020	110,698
2019	18,883
2018	44,374
2017	46,431
2016	38,830
2015 & older	620,099
Total Balance at June 30, 2021	890,042	$ 918,558
Mortgage Receivable [Member] | Internal Credit Rating One [Member]
2015 & older	66,251
Total Balance at June 30, 2021	66,251
Mortgage Receivable [Member] | Internal Credit Rating Two [Member]
2020	21,325
Total Balance at June 30, 2021	21,325
Mortgage Receivable [Member] | Internal Credit Rating Three [Member]
2021	6,420
2015 & older	35,964
Total Balance at June 30, 2021	42,384
Mortgage Receivable [Member] | Internal Credit Rating Four [Member]
2021	4,307
2020	89,373
2019	18,883
2018	44,374
2017	46,431
2016	38,830
2015 & older	504,110
Total Balance at June 30, 2021	746,308
Mortgage Receivable [Member] | Internal Credit Rating Five [Member]
2015 & older	7,397
Total Balance at June 30, 2021	7,397
Mortgage Receivable [Member] | Internal Credit Rating Six [Member]
2015 & older	6,377
Total Balance at June 30, 2021	6,377
Direct Financing Receivable [Member]
2015 & older	11,433
Total Balance at June 30, 2021	11,433
Direct Financing Receivable [Member] | Internal Credit Rating Three [Member]
2015 & older	11,433
Total Balance at June 30, 2021	11,433
Other Investment Receivables [Member]
2021	6,000
2019	55,716
2018	150,835
2016	75,590
2015 & older	5,575
Revolving Loans	200,408
Total Balance at June 30, 2021	494,124	$ 498,899
Other Investment Receivables [Member] | Internal Credit Rating Two [Member]
2015 & older	2,082
Revolving Loans	10,820
Total Balance at June 30, 2021	12,902
Other Investment Receivables [Member] | Internal Credit Rating Three [Member]
2021	6,000
2019	20,805
2018	28,602
2015 & older	3,493
Revolving Loans	184,588
Total Balance at June 30, 2021	243,488
Other Investment Receivables [Member] | Internal Credit Rating Four [Member]
2019	11,560
2018	116,608
2016	75,590
Revolving Loans	5,000
Total Balance at June 30, 2021	208,758
Other Investment Receivables [Member] | Internal Credit Rating Five [Member]
2019	23,351
2018	5,625
Total Balance at June 30, 2021	$ 28,976

VARIABLE INTEREST ENTITIES (Sch

VARIABLE INTEREST ENTITIES (Schedule of Variable Interest Entities) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	May 31, 2018
Variable Interest Entity [Line Items]
Total Assets	$ 9,759,054		$ 9,759,054		$ 9,497,449
Total Liabilities	(5,549,028)		(5,549,028)		(5,460,842)
Other investment income	11,813	$ 10,932	23,465	$ 21,584
Maplewood Real Estate Holdings
Variable Interest Entity [Line Items]
Revenue		11,243		22,586
Maplewood Real Estate Holdings | Rental and Other Investment Income [Member]
Variable Interest Entity [Line Items]
Variable interest entity rental and other investment income		17,200		33,900
Maplewood Real Estate Holdings | Rental Income [Member]
Variable Interest Entity [Line Items]
Rental income		10,041		20,182
Maplewood Real Estate Holdings | Other Investment Income [Member]
Variable Interest Entity [Line Items]
Other investment income		1,202		2,404
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member]
Variable Interest Entity [Line Items]
Total Assets	387,729		387,729		405,609
Total Liabilities	(343)		(343)
Maximum exposure to loss	17,132		17,132		17,346
Revenue	13,460	16,111	26,109	32,639
Potential accumulated deferred rent payments	$ 2,100		2,100			$ 6,300
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Scenario, Plan [Member]
Variable Interest Entity [Line Items]
Variable interest entity period of additional deferral of rent	4 months
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Rental and Other Investment Income [Member]
Variable Interest Entity [Line Items]
Variable interest entity rental and other investment income	$ 14,000	13,100	28,000	26,800
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Rental Income [Member]
Variable Interest Entity [Line Items]
Rental income	12,282	14,814	23,774	30,101
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Other Investment Income [Member]
Variable Interest Entity [Line Items]
Other investment income	1,178	$ 1,297	2,335	$ 2,538
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Letters of credit
Variable Interest Entity [Line Items]
Total Liabilities	(9,253)		(9,253)		(9,253)
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Personal Guarantee Collateral [Member]
Variable Interest Entity [Line Items]
Total Liabilities	(8,000)		(8,000)		(8,000)
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Other Collateral [Member]
Variable Interest Entity [Line Items]
Total Liabilities	(353,001)		(353,001)		(371,010)
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Collateral Pledged [Member]
Variable Interest Entity [Line Items]
Total Liabilities	(370,254)		(370,254)		(388,263)
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Real Estate Investments [Member]
Variable Interest Entity [Line Items]
Total Assets	338,291		338,291		371,010
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Assets Held For Sale [Member]
Variable Interest Entity [Line Items]
Total Assets	14,710		14,710
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Contractual Receivable [Member]
Variable Interest Entity [Line Items]
Total Assets	475		475		346
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Other Investments [Member]
Variable Interest Entity [Line Items]
Total Assets	34,253		34,253		34,253
Variable Interest Entity, Not Primary Beneficiary [Member] | Agemo Holdings LLC [Member] | Security Deposit [Member]
Variable Interest Entity [Line Items]
Total Liabilities	(343)		(343)
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings
Variable Interest Entity [Line Items]
Total Assets	944,830		944,830		911,525
Total Liabilities	(48,842)		(48,842)		(44,246)
Maximum exposure to loss	105,035		105,035		76,791
Revenue	22,145		43,965
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Rental and Other Investment Income [Member]
Variable Interest Entity [Line Items]
Variable interest entity rental and other investment income	19,700		39,000
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Rental Income [Member]
Variable Interest Entity [Line Items]
Rental income	19,093		38,125
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Other Investment Income [Member]
Variable Interest Entity [Line Items]
Other investment income	3,052		5,840
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Personal Guarantee Collateral [Member]
Variable Interest Entity [Line Items]
Total Liabilities	(40,000)		(40,000)		(40,000)
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Other Collateral [Member]
Variable Interest Entity [Line Items]
Total Liabilities	(750,953)		(750,953)		(750,488)
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Collateral Pledged [Member]
Variable Interest Entity [Line Items]
Total Liabilities	(790,953)		(790,953)		(790,488)
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Real Estate Investments [Member]
Variable Interest Entity [Line Items]
Total Assets	750,953		750,953		750,488
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Contractual Receivable [Member]
Variable Interest Entity [Line Items]
Total Assets	1,021		1,021		887
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Other Investments [Member]
Variable Interest Entity [Line Items]
Total Assets	174,988		174,988		147,148
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Straight-Line Rent Receivables [Member]
Variable Interest Entity [Line Items]
Total Liabilities	(49,119)		(49,119)		(56,664)
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Lease inducement [Member]
Variable Interest Entity [Line Items]
Total Assets	66,987		66,987		69,666
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Net In Place Lease Liability [Member]
Variable Interest Entity [Line Items]
Total Liabilities	(318)		(318)		(331)
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Security Deposit [Member]
Variable Interest Entity [Line Items]
Total Liabilities	(4,609)		(4,609)
Variable Interest Entity, Not Primary Beneficiary [Member] | Maplewood Real Estate Holdings | Contingent Liability [Member]
Variable Interest Entity [Line Items]
Total Liabilities	$ (43,915)		$ (43,915)		$ (43,915)

INVESTMENT IN JOINT VENTUREs (N

INVESTMENT IN JOINT VENTUREs (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Financing Receivable, Gross	$ 1,395,599		$ 1,395,599
Assets management fees recognized	300	$ 500	500	$ 700
Mortgage Receivable [Member]
Financing Receivable, Gross	$ 890,042		$ 890,042		$ 918,558

INVESTMENT IN JOINT VENTUREs (S

INVESTMENT IN JOINT VENTUREs (Schedule of equity method investments) (Details) $ in Thousands	Mar. 10, 2021USD ($)	Mar. 31, 2021USD ($)facility	Jun. 30, 2021USD ($)facilitypropertycontract	Mar. 31, 2021USD ($)facility	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)facilitypropertycontract	Jun. 30, 2020USD ($)	Jan. 20, 2021facility	Dec. 31, 2020USD ($)	May 17, 2019
Number of real estate properties | facility			970			970
Investments in unconsolidated joint ventures			$ 197,912			$ 197,912			$ 200,638
Financing Receivable, Gross			$ 1,395,599			$ 1,395,599
Number of operators | contract			65			65
Income (loss) from unconsolidated joint ventures			$ 1,187		$ 1,402	$ 13,017	$ 2,962
Payments to acquire real estate						604,939	25,935
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Investment						240,784
Investments in unconsolidated joint ventures			197,912			197,912			200,638
Income (loss) from unconsolidated joint ventures			1,187		1,402	13,017	2,962
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring Healthcare Investments [Member]
Income (loss) from unconsolidated joint ventures			293		712	11,704	1,281
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring II LLC [Member]
Ownership %	15.00%
Investment	$ 10,300
Income (loss) from unconsolidated joint ventures			(299)			(756)
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Lakeway Realty LLC [Member]
Ownership %										51.00%
Income (loss) from unconsolidated joint ventures			641		613	1,286	1,223
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Cindat Ice Portfolio JV GP Limited [Member]
Income (loss) from unconsolidated joint ventures			646		244	1,132	891
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | OMG Senior Housing LLC [Member]
Income (loss) from unconsolidated joint ventures			$ (103)		(118)	$ (204)	(279)
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | OH CHS SNP Inc [Member]
Ownership %			9.00%			9.00%
Initial Investment Date						Dec. 20, 2019
Investment						$ 900
Investments in unconsolidated joint ventures			$ 230			230			260
Income (loss) from unconsolidated joint ventures			$ 9		$ (49)	$ (145)	$ (154)
Skilled Nursing Facilities [Member]
Number of real estate properties | facility			729			729
Skilled Nursing Facilities [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring Healthcare Investments [Member]
Ownership %			15.00%			15.00%
Initial Investment Date						Nov. 1, 2016
Investment						$ 50,032
Investments in unconsolidated joint ventures			$ 10,916			$ 10,916			17,700
Skilled Nursing Facilities [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring II LLC [Member]
Ownership %			15.00%			15.00%
Initial Investment Date						Mar. 10, 2021
Investment						$ 10,330
Number of real estate properties | facility			1			1
Investments in unconsolidated joint ventures			$ 2,279			$ 2,279
Specialty [Member]
Number of real estate properties | property			35			35
Specialty [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Lakeway Realty LLC [Member]
Ownership %			51.00%			51.00%
Initial Investment Date						May 17, 2019
Investment						$ 73,834
Number of real estate properties | facility			1			1
Investments in unconsolidated joint ventures			$ 71,831			$ 71,831			72,318
Assisted Living Facilities [Member]
Number of real estate properties | facility			132			132
Assisted Living Facilities [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Cindat Ice Portfolio JV GP Limited [Member]
Ownership %			49.00%			49.00%
Initial Investment Date						Dec. 18, 2019
Investment						$ 105,688
Number of real estate properties | facility			66			66
Investments in unconsolidated joint ventures			$ 112,656			$ 112,656			110,360
Specialty Facility | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | OMG Senior Housing LLC [Member]
Ownership %			50.00%			50.00%
Initial Investment Date						Dec. 6, 2019
Number of real estate properties | facility			1			1
16 Facilities | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring Healthcare Investments [Member]
Amount of gain (loss) from sale of facilities				$ 102,200
16 Facilities | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring Healthcare Investments [Member]
Total cash proceeds				328,000
Amount of gain (loss) from sale of facilities				14,900		$ 14,900
5 Facilities | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring Healthcare Investments [Member]
Total cash proceeds				$ 70,800
5 Facilities | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring II LLC [Member]
Payments to acquire real estate		$ 70,800
4 Facilities | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring II LLC [Member]
Amount of gain (loss) from sale of facilities			$ (300)
4 Facilities | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring II LLC [Member]
Total cash proceeds			50,000
Amount of gain (loss) from sale of facilities			(100)
Other Investment Receivables [Member]
Financing Receivable, Gross			494,124			494,124			498,899
Other investment notes outstanding
Financing Receivable, Gross			132,401			132,401			161,155
Mortgage Receivable [Member]
Financing Receivable, Gross			$ 890,042			$ 890,042			$ 918,558
Facilities Sold | 16 Facilities | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring Healthcare Investments [Member]
Number of real estate properties | facility		16		16
Facilities Sold | 5 Facilities | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring Healthcare Investments [Member]
Number of real estate properties | facility		5		5
Facilities Sold | 4 Facilities | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring II LLC [Member]
Number of real estate properties | facility			4			4
Facilities Acquired
Number of real estate properties | facility								24
Facilities Acquired | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Second Spring II LLC [Member]
Number of real estate properties | facility		5		5
Facilities Acquired | Skilled Nursing Facilities [Member]
Number of real estate properties | facility			6			6
Facilities Acquired | Specialty [Member]
Number of real estate properties | facility			7			7
Facilities Acquired | Assisted Living Facilities [Member]
Number of real estate properties | facility			17			17

ASSETS HELD FOR SALE (Schedule

ASSETS HELD FOR SALE (Schedule of Properties Held-for-Sale) (Details) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2021USD ($)propertyfacility	Mar. 31, 2021USD ($)propertyfacility	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)facilityproperty	Jun. 30, 2020USD ($)
Number Of Properties
Beginning Balance | property	6	22		22
Properties sold/other | property	(5)	(21)
Facilities added | property	8	5
Ending balance | property	9	6		9
Net Book Value
Beginning Balance	$ 7,922	$ 81,452		$ 81,452
Properties sold/other	(1,795)	(81,252)
Properties added	29,208	7,722
Ending balance	$ 35,335	7,922		$ 35,335
Assets Held For Sale
Number of real estate properties | facility	970			970
Impairment charges		16,900
Impairment on real estate properties	$ 8,822		$ 11,988	$ 37,511	$ 15,627
Assets held for sale	$ 35,335	$ 7,922		$ 35,335
Skilled Nursing Facilities [Member]
Assets Held For Sale
Number of real estate properties | facility	729			729
Assisted Living Facilities [Member]
Assets Held For Sale
Number of real estate properties | facility	132			132
4 Facilities
Number Of Properties
Properties sold/other | facility	(4)
Assets Held For Sale
Net proceeds from sale of facilities held for sale	$ 3,500
Gain (loss) from sale of facilities	1,900
21 Facilities
Number Of Properties
Properties sold/other | facility		(21)
Assets Held For Sale
Net proceeds from sale of facilities held for sale		$ 187,600
Gain (loss) from sale of facilities		$ 100,300
1 Facility
Assets Held For Sale
Fair value of held-for-sale reclassified to lease property	200
3 Facilities
Assets Held For Sale
Impairment charges	$ 8,800
Facilities No Longer Held for Sale [Member] | 1 Facility
Assets Held For Sale
Number of real estate properties | facility	1			1
Facilities with Impairment Charges and Classified to Assets Held for Sale [Member]
Assets Held For Sale
Number of real estate properties | facility		3
Facilities with Impairment Charges and Classified to Assets Held for Sale [Member] | 3 Facilities
Assets Held For Sale
Number of real estate properties | facility	3			3

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLES (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net amortization of intangible assets	$ 1.1	$ 3.5	$ 7.3	$ 4.8
Remainder 2021	2.2		2.2
2022	4.2		4.2
2023	4		4
2024	3.8		3.8
2025	$ 3.6		$ 3.6
Below market leases, weighted average remaining amortization, period			8 years
Above market leases
Weighted average remaining amortization			10 years

GOODWILL AND OTHER INTANGIBLE_3

GOODWILL AND OTHER INTANGIBLES (Schedule of Reconciliation of Goodwill) (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)
Goodwill [Roll Forward]
Balance	$ 651,737
Add: foreign currency translation	(40)
Balance	$ 651,697

GOODWILL AND OTHER INTANGIBLE_4

GOODWILL AND OTHER INTANGIBLES (Schedule of Intangibles) (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets:
Goodwill	$ 651,697	$ 651,737
Gross intangible assets	22,410	22,822
Accumulated amortization	(20,638)	(20,882)
Net intangible assets	1,772	1,940
Liabilities:
Below market leases	139,069	139,515
Accumulated amortization	(108,508)	(100,996)
Net intangible liabilities	$ 30,561	$ 38,519

CONCENTRATION OF RISK (Narrativ

CONCENTRATION OF RISK (Narrative) (Detail) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2021USD ($)itemfacilitystatepropertycontract	Dec. 31, 2020USD ($)
Concentration Risk [Line Items]
Number of real estate properties		970
Number of operators that met or exceeded ten percent threshold for revenues | item		1
Number of states | state		42
Number of operators | contract		65
Gross investment in facilities, net of impairments and reserves for uncollectible loans | $		$ 10,100,000
Other investments | $		458,664	$ 467,442
Investment in unconsolidated joint venture | $		$ 197,912	$ 200,638
Number of unconsolidated joint ventures | item		6
Six Unconsolidated Joint Venture [Member]
Concentration Risk [Line Items]
Investment in unconsolidated joint venture | $		$ 197,900
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Consulate Health Care
Concentration Risk [Line Items]
Concentration percentage	10.00%
Assets, Total [Member] | Geographic Concentration Risk [Member] | FL
Concentration Risk [Line Items]
Concentration percentage		15.00%
Assets, Total [Member] | Geographic Concentration Risk [Member] | TX
Concentration Risk [Line Items]
Concentration percentage		10.00%
Assets, Total [Member] | Geographic Concentration Risk [Member] | MI
Concentration Risk [Line Items]
Concentration percentage		6.00%
Assets, Total [Member] | Product Concentration Risk [Member] | Real Estate Investment
Concentration Risk [Line Items]
Concentration percentage		97.00%
Skilled Nursing Facilities [Member]
Concentration Risk [Line Items]
Number of real estate properties		729
Assisted Living Facilities [Member]
Concentration Risk [Line Items]
Number of real estate properties		132
Specialty [Member]
Concentration Risk [Line Items]
Number of real estate properties | property		35
Medical Office Building [Member]
Concentration Risk [Line Items]
Number of real estate properties		2
Facilities Under Fixed Rate Mortgage Loans [Member]
Concentration Risk [Line Items]
Number of real estate properties		63
Facilities Under Fixed Rate Mortgage Loans [Member] | Skilled Nursing Facilities [Member]
Concentration Risk [Line Items]
Number of real estate properties | property		58
Facilities Under Fixed Rate Mortgage Loans [Member] | Assisted Living Facilities [Member]
Concentration Risk [Line Items]
Number of real estate properties | property		3
Facilities Under Fixed Rate Mortgage Loans [Member] | Specialty [Member]
Concentration Risk [Line Items]
Number of real estate properties		2
Facilities Held for Sale or Closed [Member]
Concentration Risk [Line Items]
Number of real estate properties		9

STOCKHOLDERS EQUITY (Schedule o

STOCKHOLDERS EQUITY (Schedule of Common Stock Dividends) (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Dividends Payable [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.67	$ 0.67	$ 1.34	$ 1.34
Dividend Record Date One [Member]
Dividends Payable [Line Items]
Dividends Declared, Date Of Record			Feb. 8, 2021
Dividends Payable, Date to be Paid			Feb. 16, 2021
Common Stock, Dividends, Per Share, Declared			$ 0.67
Dividend Record Date Two [Member]
Dividends Payable [Line Items]
Dividends Declared, Date Of Record			May 3, 2021
Dividends Payable, Date to be Paid			May 17, 2021
Common Stock, Dividends, Per Share, Declared			$ 0.67
Dividend Record Date Three [Member]
Dividends Payable [Line Items]
Dividends Declared, Date Of Record			Aug. 2, 2021
Dividends Payable, Date to be Paid			Aug. 13, 2021
Common Stock, Dividends, Per Share, Declared			$ 0.67

STOCKHOLDERS EQUITY (At The Mar

STOCKHOLDERS EQUITY (At The Market Program Schedule and Narrative) (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended
	Sep. 30, 2015	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020
$500 Million and $1 Billion ATM Programs
Issuance of common stock (in shares)		2.5	4.1	0.1
Average issue price per share		$ 36.23	$ 36.60	$ 36.18
Gross proceeds		$ 92.4	$ 153.8	$ 2
Commissions		1.9	3.2	0.2
Proceeds from issuance of common stock		90.5	$ 150.6	$ 1.8
$500 Million ATM Program
Sales price, equity distribution agreement	$ 500
$1 Billion ATM Program
Sales price, equity distribution agreement		$ 1,000
Maximum [Member] | $1 Billion ATM Program
Compensation percentage for sale of shares		2.00%	2.00%

STOCKHOLDERS EQUITY (Schedule_2

STOCKHOLDERS EQUITY (Schedule of dividend reinvestment and common stock purchase plan) (Detail) - Dividend Reinvestment And Common Stock Purchase Plan [Member] - USD ($) shares in Millions, $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020
Shares issued	1.6	2	0.1
Gross Proceeds	$ 61.8	$ 77.3	$ 3.7

STOCKHOLDERS EQUITY (Schedule_3

STOCKHOLDERS EQUITY (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 4,148,330	$ 4,218,645	$ 4,036,607	$ 4,336,594
Balance , ending	4,210,026	4,167,392	4,210,026	4,167,392
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Stockholders Equity/AOCI	4,012,061		4,012,061		$ 3,841,876
Add: portion included in noncontrolling interest	197,965		197,965		194,731
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	4,210,026	4,167,392	4,210,026	4,167,392	4,036,607
Foreign Currency Translation [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(14,231)	(67,058)	(18,427)	(35,100)
Translation gain (loss)	601	(1,738)	4,131	(33,626)
Realized gain (loss)	22	1	688	(69)
Balance , ending	(13,608)	(68,795)	(13,608)	(68,795)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(13,608)	(68,795)	(13,608)	(68,795)	(18,427)
Cash Flow Hedges [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	53,519	(10,213)	17,718	(2,369)
Unrealized (loss) gain	(20,900)	1,704	14,291	(5,823)
Realized (loss) gain	733	(1,190)	1,343	(1,507)
Balance , ending	33,352	(9,699)	33,352	(9,699)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	33,352	(9,699)	33,352	(9,699)	17,718
Net Investment Hedges [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(16,341)	8,767	(13,331)	(4,420)
Unrealized (loss) gain	317	766	(2,693)	13,953
Balance , ending	(16,024)	9,533	(16,024)	9,533
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(16,024)	9,533	(16,024)	9,533	(13,331)
Accumulated Other Comprehensive Loss [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	23,230	(65,788)	(12,768)	(39,858)
Balance , ending	4,523	(66,235)	4,523	(66,235)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Stockholders Equity/AOCI	3,720	(68,961)	3,720	(68,961)
Add: portion included in noncontrolling interest	803	2,726	803	2,726
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 4,523	$ (66,235)	$ 4,523	$ (66,235)	$ (12,768)

TAXES (Narrative) (Detail)

TAXES (Narrative) (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)subsidiary	Jun. 30, 2020USD ($)
Taxes [Line Items]
Minimum number of subsequent years the company may not be able to qualify as a REIT			4 years
Percentage of income subject to federal taxation			100.00%
Provision for foreign income taxes	$ 0.6	$ 0.7	$ 1.3	$ 1.3
Number of TSRs subject to federal, state and local income taxes with net operating loss carryforwards | subsidiary			1
Taxable REIT Subsidiaries [Member]
Taxes [Line Items]
Net operating loss carry-forward	$ 6.5		$ 6.5

TAXES (Schedule of components o

TAXES (Schedule of components of income tax expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Taxes [Abstract]
Provision for federal, state and local income taxes	$ 300	$ 200	$ 600	$ 600
Provision for foreign income taxes	600	700	1,300	1,300
Total provision for income taxes	$ 939	$ 858	$ 1,897	$ 1,863

STOCK-BASED COMPENSATION (Narra

STOCK-BASED COMPENSATION (Narrative) (Details)	3 Months Ended
	Mar. 31, 2021shares
Certain Officers and Key Employees [Member]
Vesting period, years	3 years
Profit Interest Units | Certain Officers and Key Employees [Member]
Shares awarded, other than options	142,719
Performance Based Profit Interest Units [Member]
Shares awarded, other than options	1,232,178
Performance period used for performance based awards	3 years
Vesting period, years	4 years
Time Based Restricted Equity Awards | Certain Officers and Key Employees [Member]
Shares awarded, other than options	22,051

STOCK-BASED COMPENSATION (Sched

STOCK-BASED COMPENSATION (Schedule of Stock-based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Stock-Based Compensation [Abstract]
Stock-based compensation expense	$ 5,811	$ 4,623	$ 11,207	$ 9,258

BORROWING ACTIVITIES AND ARRA_3

BORROWING ACTIVITIES AND ARRANGEMENTS (Schedule of Borrowings) (Details) $ in Thousands	Apr. 30, 2021USD ($)item	Mar. 31, 2021USD ($)	Jun. 30, 2021USD ($)	Mar. 31, 2021USD ($)	Jun. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Total secured borrowings - net			$ 365,831		$ 365,831	$ 369,524
Revolving line of credit						101,158
Total senior notes and other unsecured borrowings - net			4,906,734		4,906,734	4,698,570
Total secured and unsecured borrowings - net			5,272,565		5,272,565	$ 5,169,252
Loss on extinguishment of debt			395		30,065
Hud Mortgage
Debt Instrument [Line Items]
Assets pledged as collateral, fair value			$ 558,000		$ 558,000
4.375% notes due 2023
Debt Instrument [Line Items]
Rate			4.375%		4.375%	4.375%
4.950% notes due 2024
Debt Instrument [Line Items]
Rate			4.95%		4.95%	4.95%
4.50% notes due 2025
Debt Instrument [Line Items]
Rate			4.50%		4.50%	4.50%
5.25% notes due 2026
Debt Instrument [Line Items]
Rate			5.25%		5.25%	5.25%
4.50% notes due 2027
Debt Instrument [Line Items]
Rate			4.50%		4.50%	4.50%
4.75% notes due 2028
Debt Instrument [Line Items]
Rate			4.75%		4.75%	4.75%
3.625% notes due 2029
Debt Instrument [Line Items]
Rate			3.625%		3.625%	3.625%
3.375% notes due 2031
Debt Instrument [Line Items]
Rate			3.375%		3.375%	3.375%
3.25% notes due 2033
Debt Instrument [Line Items]
Rate			3.25%		3.25%
Secured Debt [Member] | Hud Mortgage
Debt Instrument [Line Items]
Rate			3.01%		3.01%
Total secured borrowings - net			$ 363,556		$ 363,556	$ 367,249
Secured Debt [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Maturity					2022
Rate			3.75%		3.75%
Total secured borrowings - net			$ 2,275		$ 2,275	2,275
Unsecured Debt [Member]
Debt Instrument [Line Items]
Discount - net			(33,940)		(33,940)	(31,709)
Total senior notes and other unsecured borrowings - net			4,906,734		4,906,734	4,698,570
Total unsecured borrowings - net			4,906,734		4,906,734	4,799,728
Unsecured Debt [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Deferred financing costs - net			$ (29,326)		$ (29,326)	(26,421)
Unsecured Debt [Member] | Sterling term loan
Debt Instrument [Line Items]
Maturity					N/A
Total term loans - net						136,700
Unsecured Debt [Member] | Omega OP Term Loan Facility
Debt Instrument [Line Items]
Maturity					2025
Rate			3.29%		3.29%
Total term loans - net	$ 50,000		$ 50,000		$ 50,000
Debt instrument, maturity date	Apr. 30, 2025
Unsecured Debt [Member] | 2017 Omega Op Term Loan Replaced [Member]
Debt Instrument [Line Items]
Total term loans - net	$ 50,000					50,000
Unsecured Debt [Member] | Subordinated debt
Debt Instrument [Line Items]
Maturity					2021
Rate			9.00%		9.00%
Long-term debt, gross			$ 20,000		$ 20,000	20,000
Senior Notes [Member] | 4.375% notes due 2023
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt					$ 692,000
Maturity					2023
Rate			4.375%		4.375%
Long-term debt, gross			$ 350,000		$ 350,000	700,000
Repayments of senior debt					350,000
Loss on extinguishment of debt				$ 29,700
Senior Notes [Member] | 4.950% notes due 2024
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt					$ 394,300
Maturity					2024
Rate			4.95%		4.95%
Long-term debt, gross			$ 400,000		$ 400,000	400,000
Senior Notes [Member] | 4.50% notes due 2025
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt					$ 397,700
Maturity					2025
Rate			4.50%		4.50%
Long-term debt, gross			$ 400,000		$ 400,000	400,000
Senior Notes [Member] | 5.25% notes due 2026
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt					$ 594,400
Maturity					2026
Rate			5.25%		5.25%
Long-term debt, gross			$ 600,000		$ 600,000	600,000
Senior Notes [Member] | 4.50% notes due 2027
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt					$ 683,000
Maturity					2027
Rate			4.50%		4.50%
Long-term debt, gross			$ 700,000		$ 700,000	700,000
Senior Notes [Member] | 4.75% notes due 2028
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt					$ 540,800
Maturity					2028
Rate			4.75%		4.75%
Long-term debt, gross			$ 550,000		$ 550,000	550,000
Senior Notes [Member] | 3.625% notes due 2029
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt					$ 487,800
Maturity					2029
Rate			3.625%		3.625%
Long-term debt, gross			$ 500,000		$ 500,000	500,000
Senior Notes [Member] | 3.375% notes due 2031
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt					$ 680,500
Maturity					2031
Rate			3.375%		3.375%
Long-term debt, gross			$ 700,000		$ 700,000	700,000
Senior Notes [Member] | 3.25% notes due 2033
Debt Instrument [Line Items]
Proceeds from issuance of senior long-term debt					$ 689,300
Maturity		2033			2033
Rate		3.25%	3.25%	3.25%	3.25%
Long-term debt, gross			$ 700,000		$ 700,000
Debt instrument, face amount		$ 700,000		$ 700,000
Minimum [Member] | Omega OP Term Loan Facility
Debt Instrument [Line Items]
Basis spread on variable rate	0.85%
Minimum [Member] | Secured Debt [Member] | Hud Mortgage
Debt Instrument [Line Items]
Maturity					2046
Maximum [Member] | Omega OP Term Loan Facility
Debt Instrument [Line Items]
Basis spread on variable rate	1.85%
Maximum [Member] | Secured Debt [Member] | Hud Mortgage
Debt Instrument [Line Items]
Maturity					2052
Revolving Credit Facility | Unsecured Debt [Member]
Debt Instrument [Line Items]
Maturity					2025
Rate			1.30%		1.30%
Maximum borrowing capacity	$ 1,450,000
Basis spread on variable rate	0.1193%
Debt instrument number of available extensions | item	2
Debt instrument extension period duration	6 months
Revolving Credit Facility | Unsecured Debt [Member] | 2017 Revolving Credit Facility Replaced [Member]
Debt Instrument [Line Items]
Revolving line of credit						$ 101,158
Maximum borrowing capacity	$ 1,250,000
Revolving Credit Facility | Minimum [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.95%
Revolving Credit Facility | Maximum [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 2,500,000
Basis spread on variable rate	1.85%

BORROWING ACTIVITIES AND ARRA_4

BORROWING ACTIVITIES AND ARRANGEMENTS (Unsecured Borrowings) (Details) - Revolving Credit Facility - Unsecured Debt [Member] $ in Millions	Apr. 30, 2021USD ($)item
Maximum borrowing capacity	$ 1,450
Description of variable rate basis	LIBOR
Basis spread on variable rate	0.1193%
Debt instrument number of available extensions | item	2
Debt instrument extension period duration	6 months
Revolving credit facility to be drawn in Alternative Currencies or U.S. Dollars in tranche one	$ 1,150
Revolving credit facility to be drawn in Alternative Currencies or U.S. Dollars in tranche two	300
Debt issuance costs, gross	12.9
2017 Revolving Credit Facility Replaced [Member]
Maximum borrowing capacity	$ 1,250
Minimum [Member]
Basis spread on variable rate	0.95%
Maximum [Member]
Maximum borrowing capacity	$ 2,500
Basis spread on variable rate	1.85%

BORROWING ACTIVITIES AND ARRA_5

BORROWING ACTIVITIES AND ARRANGEMENTS (OP Term Loan) (Details) $ in Thousands	Apr. 30, 2021USD ($)item	Jun. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Senior notes and other unsecured borrowings - net		$ 4,906,734	$ 4,698,570
Unsecured Debt [Member]
Senior notes and other unsecured borrowings - net		4,906,734	4,698,570
Omega OP Term Loan Facility | Unsecured Debt [Member]
Total term loans - net	$ 50,000	$ 50,000
Debt instrument, maturity date	Apr. 30, 2025
Debt issuance costs, gross	$ 400
2017 Omega Op Term Loan Replaced [Member] | Unsecured Debt [Member]
Total term loans - net	$ 50,000		$ 50,000
Omega OP [Member] | Omega OP Term Loan Facility
Debt instrument number of available extensions | item	2
Debt instrument extension period duration	6 months
Minimum [Member] | Omega OP Term Loan Facility
Basis spread on variable rate	0.85%
Maximum [Member] | Omega OP Term Loan Facility
Basis spread on variable rate	1.85%

BORROWING ACTIVITIES AND ARRA_6

BORROWING ACTIVITIES AND ARRANGEMENTS (Forward Starting Swaps) (Details) £ in Millions	Mar. 27, 2020USD ($)contract	Mar. 31, 2021USD ($)	Mar. 31, 2021GBP (£)	Mar. 31, 2021USD ($)	Mar. 31, 2021USD ($)contract	Jun. 30, 2021	Dec. 31, 2020
Derivative instrument discontinued hedge accounting reclassification period						10 years
Notional amount of nonderivative instruments | £			£ 174
Number of foreign currency forwards entered into				4	4
3.375% notes due 2031
Debt instrument, interest rate, stated percentage						3.375%	3.375%
3.375% notes due 2031 | Senior Notes [Member]
Debt instrument, interest rate, stated percentage						3.375%
Maturity						2031
3.25% notes due 2033
Debt instrument, interest rate, stated percentage						3.25%
3.25% notes due 2033 | Senior Notes [Member]
Debt instrument, face amount | $		$ 700,000,000		$ 700,000,000	$ 700,000,000
Debt instrument, interest rate, stated percentage		3.25%		3.25%	3.25%	3.25%
Maturity		2033				2033
Net Investment Hedging [Member]
Notional amount of nonderivative instruments | £			£ 174
Interest Rate Swap | Cash Flow Hedging [Member]
Derivative, notional amount | $	$ 400,000,000
Derivative, effective date						Aug. 1, 2023
Derivative, inception Date						Mar. 27, 2020
Derivative, maturity Date						Aug. 1, 2033
Derivative forecasted issuance period on long term debt	5 years
Derivative, fixed interest rate	0.8675%
Derivative, maximum period	46 months
Number of forward starting swaps entered into | contract	5

FINANCIAL INSTRUMENTS (Schedule

FINANCIAL INSTRUMENTS (Schedule of Financial Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
4.375% notes due 2023
Liabilities:
Notes issued, interest rate	4.375%	4.375%
4.950% notes due 2024
Liabilities:
Notes issued, interest rate	4.95%	4.95%
4.50% notes due 2025
Liabilities:
Notes issued, interest rate	4.50%	4.50%
5.25% notes due 2026
Liabilities:
Notes issued, interest rate	5.25%	5.25%
4.50% notes due 2027
Liabilities:
Notes issued, interest rate	4.50%	4.50%
4.75% notes due 2028
Liabilities:
Notes issued, interest rate	4.75%	4.75%
3.625% notes due 2029
Liabilities:
Notes issued, interest rate	3.625%	3.625%
3.375% notes due 2031
Liabilities:
Notes issued, interest rate	3.375%	3.375%
3.25% notes due 2033
Liabilities:
Notes issued, interest rate	3.25%
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Assets:
Investments in direct financing leases - net	$ 10,807	$ 10,764
Mortgage notes receivable - net	857,162	885,313
Other investments - net	458,664	467,442
Total	1,326,633	1,363,519
Liabilities:
Secured borrowing	2,275	2,275
Sterling term loan		136,453
Omega OP term loan	49,616
Subordinated debt - net	20,041	20,083
Total	5,272,565	5,169,252
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 4.375% notes due 2023
Liabilities:
Notes Payable	348,816	696,981
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 4.950% notes due 2024
Liabilities:
Notes Payable	397,219	396,714
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 4.50% notes due 2025
Liabilities:
Notes Payable	397,305	396,924
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 5.25% notes due 2026
Liabilities:
Notes Payable	596,790	596,437
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 4.50% notes due 2027
Liabilities:
Notes Payable	691,642	690,909
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 4.75% notes due 2028
Liabilities:
Notes Payable	543,404	542,899
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 3.625% notes due 2029
Liabilities:
Notes Payable	490,076	489,472
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 3.375% notes due 2031
Liabilities:
Notes Payable	682,697	681,802
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 3.25% notes due 2033
Liabilities:
Notes Payable	689,128
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Hud Mortgage
Liabilities:
HUD debt - net	363,556	367,249
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 2017 Revolving Credit Facility Replaced [Member]
Liabilities:
Revolving line of credit		101,158
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 2017 Omega Op Term Loan Replaced [Member]
Liabilities:
Omega OP term loan		49,896
Estimate Of Fair Value, Fair Value Disclosure [Member]
Assets:
Investments in direct financing leases - net	10,807	10,764
Mortgage notes receivable - net	897,342	924,353
Other investments - net	466,690	474,552
Total	1,374,839	1,409,669
Liabilities:
Secured borrowing	2,275	2,275
Sterling term loan		136,700
Omega OP term loan	50,000
Subordinated debt - net	20,799	21,599
Total	5,808,955	5,767,243
Estimate Of Fair Value, Fair Value Disclosure [Member] | 4.375% notes due 2023
Liabilities:
Notes Payable	379,284	770,635
Estimate Of Fair Value, Fair Value Disclosure [Member] | 4.950% notes due 2024
Liabilities:
Notes Payable	442,023	441,194
Estimate Of Fair Value, Fair Value Disclosure [Member] | 4.50% notes due 2025
Liabilities:
Notes Payable	444,675	444,652
Estimate Of Fair Value, Fair Value Disclosure [Member] | 5.25% notes due 2026
Liabilities:
Notes Payable	697,838	697,993
Estimate Of Fair Value, Fair Value Disclosure [Member] | 4.50% notes due 2027
Liabilities:
Notes Payable	790,201	794,294
Estimate Of Fair Value, Fair Value Disclosure [Member] | 4.75% notes due 2028
Liabilities:
Notes Payable	627,615	633,950
Estimate Of Fair Value, Fair Value Disclosure [Member] | 3.625% notes due 2029
Liabilities:
Notes Payable	538,108	532,248
Estimate Of Fair Value, Fair Value Disclosure [Member] | 3.375% notes due 2031
Liabilities:
Notes Payable	721,067	731,541
Estimate Of Fair Value, Fair Value Disclosure [Member] | 3.25% notes due 2033
Liabilities:
Notes Payable	698,804
Estimate Of Fair Value, Fair Value Disclosure [Member] | Hud Mortgage
Liabilities:
HUD debt - net	$ 396,266	409,004
Estimate Of Fair Value, Fair Value Disclosure [Member] | 2017 Revolving Credit Facility Replaced [Member]
Liabilities:
Revolving line of credit		101,158
Estimate Of Fair Value, Fair Value Disclosure [Member] | 2017 Omega Op Term Loan Replaced [Member]
Liabilities:
Omega OP term loan		$ 50,000

COMMITMENTS AND CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - USD ($) $ in Thousands	Sep. 29, 2020	Jun. 30, 2021	May 17, 2019
Total commitments		$ 539,528
Indemnification Agreement [Member]
Total commitments		$ 8,600
Lakeway Realty LLC [Member]
Litigation settlement, amount awarded to other party	$ 1,100
Minimum [Member] | Indemnification Agreement [Member]
Indemnification agreement occurrence period		18 months
Maximum [Member] | Indemnification Agreement [Member]
Indemnification agreement occurrence period		72 months
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Lakeway Realty LLC [Member]
Percentage of ownership interest			51.00%

COMMITMENTS AND CONTINGENCIES_3

COMMITMENTS AND CONTINGENCIES (Schedule of remaining commitments) (Detail) $ in Thousands	Jun. 30, 2021USD ($)
Total commitments	$ 539,528
Amounts funded to date	(415,281)
Remaining commitments	124,247
Other Investment Committed [Member]
Remaining commitments	$ 67,600

EARNINGS PER SHARE (Schedule of

EARNINGS PER SHARE (Schedule of Computation of Basic and Diluted Earnings per Share) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net income	$ 86,863	$ 101,960	$ 251,229	$ 194,239
Deduct: net income attributable to noncontrolling interests	(2,340)	(2,653)	(6,728)	(5,017)
Net income available to common stockholders	$ 84,523	$ 99,307	$ 244,501	$ 189,222
Denominator:
Denominator for basic earnings per share	236,229	227,411	234,401	227,336
Effect of dilutive securities:
Common stock equivalents	1,130	1,030	1,037	1,146
Noncontrolling interest - Omega OP Units	6,549	6,082	6,470	6,033
Denominator for diluted earnings per share	243,908	234,523	241,908	234,515
Earnings per share - basic:
Net income available to common stockholders	$ 0.36	$ 0.44	$ 1.04	$ 0.83
Earnings per share - diluted:
Net income	$ 0.36	$ 0.43	$ 1.04	$ 0.83

SUPPLEMENTAL DISCLOSURE TO CO_3

SUPPLEMENTAL DISCLOSURE TO CONSOLIDATED STATEMENTS OF CASH FLOWS (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents	$ 100,824	$ 37,022	$ 163,535
Restricted cash	3,736	4,543	4,023
Cash, cash equivalents and restricted cash at end of year	104,560	41,565	$ 167,558	$ 33,380
Supplemental Information:
Interest paid during the period, net of amounts capitalized	105,634	112,035
Taxes paid during the period	3,072	4,497
Non cash investing activities
Non cash proceeds from sale of real estate investments		83,910
Non cash placement of mortgage	(1,000)	(86,936)
Non cash proceeds from other investments	1,000	3,026
Non cash financing activities
Non cash borrowing of other long-term borrowings		6,459
Change in fair value of cash flow hedges	17,869	(7,329)
Remeasurement of debt denominated in a foreign currency	$ 3,010	$ (13,953)

SUBSEQUENT EVENTS (Narrative) (

SUBSEQUENT EVENTS (Narrative) (Details) $ in Thousands	Jul. 14, 2021USD ($)facility	Jul. 01, 2021USD ($)facility	Jun. 30, 2021USD ($)facility	Jun. 30, 2020USD ($)	Jan. 20, 2021facility	Dec. 31, 2020USD ($)
Number of real estate properties | facility			970
Mortgage notes receivable			$ 1,395,599
Payments to acquire real estate			604,939	$ 25,935
Facilities Acquired
Number of real estate properties | facility					24
Mortgage Receivable [Member]
Mortgage notes receivable			890,042			$ 918,558
Mortgage Receivable [Member] | Two Existing Facilities [Member] | OH
Mortgage notes receivable			6,400
Mortgage Receivable [Member] | 3 Facilities | MD
Mortgage notes receivable			$ 36,000
Mortgage loans on real estate, interest rate			13.75%
Subsequent Event [Member] | 8 Facilities | OH
Number of real estate properties | facility		8
Working capital receivable outstanding		$ 12,000
Interest rate		10.00%
Debt instrument, maturity date		Jun. 30, 2022
Subsequent Event [Member] | 3 Facilities | MD
Expected rent first year		$ 5,000
Lessor - annual percentage increases over the rents of the prior year, minimum		2.50%
Subsequent Event [Member] | 2 Facilities | UNITED KINGDOM
Expected rent first year	$ 800
Lessor - annual percentage increases over the rents of the prior year, minimum	2.50%
Subsequent Event [Member] | Facilities Financed | 6 Facilities | OH
Number of real estate properties | facility		6
Subsequent Event [Member] | Facilities Acquired | 3 Facilities | MD
Number of real estate properties | facility		3
Subsequent Event [Member] | Facilities Acquired | 2 Facilities | UNITED KINGDOM
Number of real estate properties | facility	2
Payments to acquire real estate	$ 9,500
Subsequent Event [Member] | Mortgage Receivable [Member] | 8 Facilities | OH
Mortgage notes receivable		$ 72,400
Mortgage loans on real estate, interest rate		10.50%