The initial rate charged under a lease entered into in connection with the purchase of a property.

No definition available.

Name:	nhi_AssetAcquisitionInitialLeaseRate
Namespace Prefix:	nhi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Asset Purchase Transaction Costs

+ References

No definition available.

+ Details

Name:	nhi_AssetPurchaseTransactionCosts
Namespace Prefix:	nhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Finance Receivable, Number Of Loan Extensions

+ References

No definition available.

+ Details

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

- 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-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Real Estate Investments During The Period

+ References

No definition available.

+ Details

Name:	nhi_RealEstateInvestmentsDuringThePeriod
Namespace Prefix:	nhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Term of lessee'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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix:	us-gaap_
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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919359-209981

+ Details

Name:	us-gaap_LessorOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
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

The cash outflow for acquisition of or capital improvements to properties held for investment (operating, managed, leased) or for use.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsForCapitalImprovements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

No definition available.

+ Details

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

- Details

Name:	us-gaap_InvestmentTypeAxis=nhi_CurrentPeriodRealEstateAcquisitionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MajorCustomersAxis=nhi_VizionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MajorCustomersAxis=nhi_NavionSeniorSolutionsMember
Namespace Prefix:
Data Type:	na
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Period Type:

Investment Activity (Vizion Health and Navion Senior Solutions) (Details) $ in Thousands	1 Months Ended		12 Months Ended
	Jun. 30, 2021 USD ($) renewalOption bedOrUnitInTheProperty	May 31, 2021 USD ($) renewalOption bedOrUnitInTheProperty	Dec. 31, 2022 USD ($)
Current Period Real Estate Acquisition
Real Estate [Line Items]
Total			$ 30,500
Vizion Health
Real Estate [Line Items]
Number of units in real estate property \| bedOrUnitInTheProperty		64
Lessor, operating lease, contract term		15 years
Number of additional lease renewal options \| renewalOption		2
Lessee, operating lease, renewal term		5 years
Initial lease rate		8.50%
Lease escalator minimum		2.50%
Payments for capital improvements		$ 2,000
Vizion Health \| Current Period Real Estate Acquisition
Real Estate [Line Items]
Total		40,300
Asset purchase transaction costs		$ 300
Navion Senior Solutions
Real Estate [Line Items]
Number of units in real estate property \| bedOrUnitInTheProperty	48
Lessor, operating lease, contract term	12 years
Number of additional lease renewal options \| renewalOption	2
Lessee, operating lease, renewal term	5 years
Initial lease rate	7.50%
Lease escalator minimum	2.50%
Navion Senior Solutions \| Current Period Real Estate Acquisition
Real Estate [Line Items]
Total	$ 6,600
Asset purchase transaction costs	$ 100