Debt Instrument, Extension Period

No definition available.

Name:	nhi_DebtInstrumentExtensionPeriod
Namespace Prefix:	nhi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Number Of Extension Options

+ References

No definition available.

+ Details

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Namespace Prefix:	nhi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

This item represents the debt leverage limit that would trigger an increase in the interest rate to be paid on outstanding debt balances.

+ References

No definition available.

+ Details

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

- Definition

This item represents the net book value of real estate pledged toward mortgage.

+ References

No definition available.

+ Details

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

- Definition

Percentage Of Issue Price On Face Value

+ References

No definition available.

+ Details

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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

- 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.

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+ Details

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

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

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+ Details

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

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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- Details

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Period Type:

- Details

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Balance Type:
Period Type:

- Details

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Balance Type:
Period Type:

- Details

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Period Type:

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Period Type:

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Period Type:

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Period Type:

- Details

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Balance Type:
Period Type:

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Debt (Narrative) (Details) $ in Millions	1 Months Ended	3 Months Ended
Debt (Narrative) (Details) $ in Millions	Jan. 31, 2021 USD ($)	Mar. 31, 2024 USD ($) property extensionOption
Debt Instrument [Line Items]
Debt leverage limit		50.00%
Fannie Mae term loans - secured, non-recourse
Debt Instrument [Line Items]
Interest rate		3.79%
Long-term debt		$ 60.1
Term of debt		10 years
Net book value		$ 100.0
Debt Instrument, Name, Fannie Mae Term Loans
Debt Instrument [Line Items]
Properties \| property		11
FNMA Berkadia Note
Debt Instrument [Line Items]
Interest rate		4.60%
Long-term debt		$ 16.0
Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate		1.00%
Fed Funds Effective Rate Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.50%
Minimum
Debt Instrument [Line Items]
Facility fee percentage		0.125%
Maximum
Debt Instrument [Line Items]
Facility fee percentage		0.30%
Secured Debt \| 2025 Term Loan
Debt Instrument [Line Items]
Aggregate principle amount issued		$ 200.0
Secured Debt \| Secured Overnight Financing Rate (SOFR) \| 2025 Term Loan
Debt Instrument [Line Items]
Basis spread on variable rate		0.10%
Senior Notes \| 2031 Senior Notes
Debt Instrument [Line Items]
Aggregate principle amount issued	$ 400.0
Interest rate	3.00%
Percentage of issue price on face value	99.196%
Proceeds from issuance of senior notes	$ 392.3
Revolving Credit Facility \| Minimum \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate		0.725%
Revolving Credit Facility \| Minimum \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.00%
Revolving Credit Facility \| Maximum \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate		1.40%
Revolving Credit Facility \| Maximum \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.40%
Revolving Credit Facility \| Unsecured Debt
Debt Instrument [Line Items]
Unsecured revolving credit facility		$ 700.0
Debt instrument, number of extension options \| extensionOption		2
Debt instrument, extension period		6 months
Unused balance of the unsecured revolving credit facility		$ 451.5