Asset Acquisition, Rent Deferral

No definition available.

Name:	nhi_AssetAcquisitionRentDeferral
Namespace Prefix:	nhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Asset Acquisition, Rent Deferral Deduction.

+ References

No definition available.

+ Details

Name:	nhi_AssetAcquisitionRentDeferralDeduction
Namespace Prefix:	nhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This item represents the minimum rate a lease payment escalates each year.

+ References

No definition available.

+ Details

Name:	nhi_LeaseEscalatorMinimum
Namespace Prefix:	nhi_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

This item represents the number of shares of a lessor that are owned by a significant lessee as of the end of the reporting period.

+ References

No definition available.

+ Details

Name:	nhi_LessorEquitySharesOwnedSignificantLessee
Namespace Prefix:	nhi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Lessor, Number Of Lease Agreements

+ References

No definition available.

+ Details

Name:	nhi_LessorNumberOfLeaseAgreements
Namespace Prefix:	nhi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

This item represents the original cost of corporate assets that are not part of the investment portfolio.

+ References

No definition available.

+ Details

Name:	nhi_NonportfolioAssetsOriginalCost
Namespace Prefix:	nhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Number of Board of Directors Members Also Members of NHC Board of Directors

+ References

No definition available.

+ Details

Name:	nhi_NumberOfBoardOfDirectorsMembersAlsoMembersOfNHCBoardOfDirectors
Namespace Prefix:	nhi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number Of Real Estate Properties Sold

+ References

No definition available.

+ Details

Name:	nhi_NumberOfRealEstatePropertiesSold
Namespace Prefix:	nhi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of Master Leases

+ References

No definition available.

+ Details

Name:	nhi_NumberofMasterLeases
Namespace Prefix:	nhi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents the rental revenue rate earned during the period from lessee-operators based on revenues generated in their operations, generally in excess of a base amount. Generally stipulated in the lease agreement, it usually will provide for a fixed percentage of revenue to be paid as additional (or possibly only) rent due the lessor, and may be based on gross revenues, net revenues, or multiple variations thereof.

+ References

No definition available.

+ Details

Name:	nhi_PercentageRentRate
Namespace Prefix:	nhi_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The element represents the original cost of all portfolio leased assets.

+ References

No definition available.

+ Details

Name:	nhi_RealEstateInvestmentPropertyPortfolioAssets
Namespace Prefix:	nhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The periodic expense to reduce the value of the rate deferral asset that is created when utilities under bill customers during periods of rate increases by deferring rate increases. These customers eventually pay higher rates to repay the utility for the rate deferral.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
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-Section 50
-Paragraph 42
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-SubTopic 10
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-URI https://asc.fasb.org//1943274/2147482861/275-10-50-20

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of writeoff of financing receivable, charged against allowance for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-79

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-Topic 326
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-Topic 326
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-Subparagraph (c)(3)
-SubTopic 10
-Topic 310
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of incentive granted by lessor to lessee.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 840
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6
-Publisher FASB
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-Subparagraph (a)
-SubTopic 10
-Topic 842
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479924/842-10-30-5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479773/842-30-50-5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479773/842-30-50-3

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of units in a real estate property owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfUnitsInRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Cash payments to lessor's for use of assets under operating leases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (g)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-25

+ Details

Name:	us-gaap_PaymentsForRent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow associated with the collection of receivables arising from the lease of real estate, equipment or other fixed assets for a specified time in exchange for payment, usually in the form of rent; excludes proceeds from sales-type lease transactions, which are classified as operating activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-12

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 976
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482856/976-310-50-1

+ Details

Name:	us-gaap_RealEstateLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Difference between actual rental income due and rental income recognized on a straight-line basis.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_StraightLineRent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of the adjustment to rental revenues to measure escalating leasing revenues on a straight line basis.

+ References

No definition available.

+ Details

Name:	us-gaap_StraightLineRentAdjustments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_AssetAcquisitionAxis=nhi_BickfordSeniorLivingAcquisitionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=nhi_LeaseExtendedUntil2028Member
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Balance Type:
Period Type:

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Name:	srt_MajorCustomersAxis=nhi_SeniorLivingCommunitiesMember
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Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=nhi_NHC1991LeaseMember
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Period Type:

- Details

Name:	srt_MajorCustomersAxis=nhi_BickfordSeniorLivingMember
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Investment Activity (Tenant Concentration) (Details)	1 Months Ended	3 Months Ended		6 Months Ended	12 Months Ended
Investment Activity (Tenant Concentration) (Details)	Nov. 30, 2022 USD ($) bedOrUnitInTheProperty	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) bedOrUnitInTheProperty	Jun. 30, 2022 USD ($) property	Dec. 31, 2023 USD ($) lease property unit boardMember masterLease facility state bedOrUnitInTheProperty shares	Dec. 31, 2022 USD ($) bedOrUnitInTheProperty	Dec. 31, 2021 USD ($)	Feb. 28, 2023 unit	Sep. 01, 2022 property	Apr. 01, 2022 property masterLease	Jun. 30, 2021 facility
Real Estate [Line Items]
Nonportfolio assets, original cost					$ 2,600,000
Credit loss reserve			$ (15,338,000)		(15,476,000)	$ (15,338,000)
Straight-line rent income, net of write-offs					$ 6,961,000	(16,681,000)	$ 14,603,000
Lessor, operating lease, renewal term					5 years
Number of board of directors members also members of NHC board of directors \| boardMember					2
Lease incentive payments, net			3,190,000		$ 10,669,000	3,190,000
Rental income					$ 249,227,000	217,700,000	271,049,000
Bickford Senior Living Acquisition
Real Estate [Line Items]
Properties \| property					2
Asset acquisition, rent deferral deduction		$ 2,500,000	3,000,000
Lease Extended Until 2028
Real Estate [Line Items]
Lease escalator minimum					8.00%
Senior Living Communities
Real Estate [Line Items]
Straight-line rent income, net of write-offs					$ 1,200,000	400,000	2,500,000
Rental income					51,274,000	51,183,000	50,726,000
NHC
Real Estate [Line Items]
Straight-line rent income, net of write-offs					$ 1,200,000	500,000	0
Number of real estate properties sold \| property									7
Number of master leases \| masterLease					2
Lessor, operating lease, renewal term					5 years
Lessor equity shares owned, significant lessee (in shares) \| shares					1,630,642
Rental income					$ 37,335,000	36,893,000	37,735,000
NHC \| NHC - 1991 Lease
Real Estate [Line Items]
Percentage rent rate					4.00%
Bickford
Real Estate [Line Items]
Properties \| facility					39
Straight-line rent income, net of write-offs						18,200,000	1,700,000
Number of leases \| lease					4
Write off of financing receivable					$ 18,100,000
Proceeds from rent collection					33,400,000	27,600,000	29,500,000
Rental income					38,688,000		34,599,000
Asset acquisition, rent deferral deduction					18,000,000
Amortization of rate deferral					6,000,000
Bickford \| Bickford
Real Estate [Line Items]
Number of units in real estate property	60							64
Payments for rent					200,000	2,300,000
Asset acquisition, rent deferral deduction	$ 3,000,000
Bickford \| Lease Extended Until 2028
Real Estate [Line Items]
Properties \| property				11						28
Number of master leases \| masterLease										3
Rental income					28,300,000
Cash Basis Lessees
Real Estate [Line Items]
Lease incentive payments, net			$ 7,100,000		7,100,000	7,100,000
Rental income					48,300,000	21,400,000	$ 68,800,000
Straight line rent adjustments					26,000,000
Cash Basis Lessees \| Bickford Senior Living Acquisition
Real Estate [Line Items]
Asset acquisition, rent deferral deduction					$ 2,500,000	$ 3,000,000
Holiday Acquisition Holdings
Real Estate [Line Items]
Properties \| facility											17
NHC - 1991 Lease \| Senior Living Communities
Real Estate [Line Items]
Properties \| property					10
Number of units in real estate property \| unit					2,216
Revenue as % of Total, Exceeds 10%
Real Estate [Line Items]
Number of states in which entity operates \| bedOrUnitInTheProperty			2		2	2
Geographic Concentration Risk \| SOUTH CAROLINA \| Investment Consideration Benchmark
Real Estate [Line Items]
Percentage of continuing revenue					12.10%	12.10%
Geographic Concentration Risk \| TEXAS \| Investment Consideration Benchmark
Real Estate [Line Items]
Percentage of continuing revenue					10.70%	10.70%
Independent Living Facilities
Real Estate [Line Items]
Number of states in which entity operates \| state					8
Properties \| property					3
Independent Living Facilities \| SHOP
Real Estate [Line Items]
Real estate investment property, portfolio assets					$ 347,400,000
Properties \| property					15					15
Number of units in real estate property \| unit					1,733
Skilled Nursing Facilities
Real Estate [Line Items]
Properties \| facility					32
Skilled Nursing Facilities \| NHC \| Subleased Facilities
Real Estate [Line Items]
Properties \| property					4
Facilities Transitioned To Other Operators \| Bickford
Real Estate [Line Items]
Lessor, operating lease, contract term				10 years
Facilities Transitioned To Other Operators \| Holiday Acquisition Holdings
Real Estate [Line Items]
Properties \| property				1						1
Assisted Living Facilities \| Bickford
Real Estate [Line Items]
Straight line rent adjustments				$ 700,000