XML 85 R68.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Mortgage and Other Notes Receivable (Narrative) (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 31, 2025 USD ($) | Aug. 31, 2024 USD ($) extensionOption | Jun. 30, 2024 USD ($) facility | Feb. 29, 2024 USD ($) extensionOption | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) property | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Feb. 01, 2025 USD ($) | Dec. 31, 2024 mortgage | Dec. 31, 2024 unit | Dec. 31, 2024 property | Dec. 31, 2024 | Dec. 31, 2024 renewalOption | Dec. 31, 2024 loan | Nov. 30, 2024 USD ($) | Sep. 30, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  |  |  | $ (289,175) |  |  |  |  |  |  |  |  |  |  |
Number of health care properties related to mortgage notes receivables |  |  |  |  |  |  |  |  |  | 11 |  | 16 |  |  |  |  |
Credit loss reserve |  |  |  |  |  | (20,249) | $ (15,476) | $ (20,200) |  |  |  |  |  |  |  |  |
Financing receivable, allowance for credit loss, period increase (decrease) |  |  |  |  | $ 3,600 |  |  |  |  |  |  |  |  |  |  |  |
Loans and leases agreement |  |  |  |  |  | 138,200 |  |  |  |  |  |  |  |  |  |  |
Financing receivable, excluding accrued interest, after allowance for credit loss |  |  |  |  |  | (268,926) | (245,271) |  |  |  |  |  |  |  |  |  |
Loans and lease receivable, number Of underlying properties | property |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |
Interest income and other |  |  |  |  |  | 23,711 | 21,799 | 24,698 |  |  |  |  |  |  |  |  |
Probability of default, increase, current conditions adjustment |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% |  |  |  |
Estimated credit losses, current conditions adjustment, combined |  |  |  |  |  |  |  |  |  |  |  |  | 40.00% |  |  |  |
Carriage Crossing Senior Living |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans and leases agreement |  |  |  | $ 15,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent incentive payments |  |  |  | $ 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Loan term |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, stated interest rate |  |  |  | 8.75% |  |  |  |  |  |  |  |  |  |  |  |  |
Number of additional lease renewal options | extensionOption |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |
Note receivable renewal term |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |
Compass Senior Living , LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans and leases agreement |  |  | $ 9,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan term |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, stated interest rate |  |  | 8.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of mortgage note receivable facilities | facility |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Clear Sky Senior Living |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans and leases agreement |  | $ 27,700 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan term |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, stated interest rate |  | 9.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of additional lease renewal options | extensionOption |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note receivable renewal term |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, after allowance for credit loss |  |  |  |  |  | (7,400) |  |  |  |  |  |  |  |  |  |  |
Montecito Medical Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income and other |  |  |  |  |  | 1,900 | 1,800 | 1,800 |  |  |  |  |  |  |  |  |
Loans and leases agreement |  |  |  |  |  | $ 50,000 |  |  |  |  |  |  |  |  |  |  |
Loan term |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |
Number of additional lease renewal options | renewalOption |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |
Financing receivable, after allowance for credit loss |  |  |  |  |  | $ (4,500) |  |  |  |  |  |  |  |  |  |  |
Investment interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 7.50% |  |  |  |
Notes receivable, interest rate, master credit agreement |  |  |  |  |  |  |  |  |  |  |  |  | 9.50% |  |  |  |
Incremental percentage increase in the stated rate of a note receivable |  |  |  |  |  |  |  |  |  |  |  |  | 2.50% |  |  |  |
Deferred interest rate, additional interest rate accrued |  |  |  |  |  |  |  |  |  |  |  |  | 4.50% |  |  |  |
Montecito Medical Real Estate | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, proceeds from principal payments | $ 6,200 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bickford |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, after allowance for credit loss |  |  |  |  |  | (16,072) |  |  |  |  |  |  |  |  |  |  |
Aggregate principle amount issued |  |  |  |  |  | 400 | 300 |  |  |  |  |  |  |  |  |  |
Interest income and other |  |  |  |  |  | $ 1,300 | 1,200 | 1,300 |  |  |  |  |  |  |  |  |
Senior Living Communities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note receivable renewal term |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |
Financing receivable, after allowance for credit loss |  |  |  |  |  | $ (43,916) |  |  |  |  |  |  |  |  |  |  |
Revolving amount line of credit |  |  |  |  |  | 20,000 |  |  |  |  |  |  |  |  |  |  |
Revolving note receivable amount outstanding |  |  |  |  |  | $ (11,300) |  |  |  |  |  |  |  |  |  |  |
Loans receivable, description, variable rate basis, reference rate |  |  |  |  |  | 8.00% |  |  |  |  |  |  |  |  |  |  |
Purchase option, minimum amount |  |  |  |  |  | $ 38,300 |  |  |  |  |  |  |  |  |  |  |
Non-performing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit loss reserve |  |  |  |  |  | (16,100) | (11,900) |  |  |  |  |  |  |  |  |  |
Interest income and other |  |  |  |  |  | 1,300 | 1,800 | $ 1,700 |  |  |  |  |  |  |  |  |
Non-performing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  |  |  | (25,869) |  |  |  |  |  |  |  |  |  |  |
Non-performing | between 1.0x and 1.5x |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  |  | (14,500) | (15,869) |  |  |  |  |  |  |  |  |  |  |
Mezzanine |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit loss reserve |  |  |  |  |  | (8,600) |  |  |  |  |  |  |  |  |  |  |
Mezzanine | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit loss reserve |  |  |  |  |  |  |  |  | $ (10,000) |  |  |  |  |  |  |  |
Bickford |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit loss reserve |  |  |  |  |  | (1,400) | (2,100) |  |  |  |  |  |  |  |  |  |
Bickford | Non-performing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  |  |  | (700) |  |  |  |  |  |  |  |  |  |  |
Secured By Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  |  |  | (175,800) | (162,400) |  |  |  |  |  |  |  |  |  |
Not Secured By Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, accrued interest, before allowance for credit loss |  |  |  |  |  |  | $ (98,300) |  |  |  |  |  |  |  |  |  |
Financing receivable, after allowance for credit loss |  |  |  |  |  | (113,400) |  |  |  |  |  |  |  |  |  |  |
Capital Funding Group, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, stated interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00%
Financing receivable, excluding accrued interest, after allowance for credit loss |  |  |  |  | $ (25,000) |  |  |  |  |  |  |  |  |  |  | $ (50,000) | $ (8,100)
Property Held by Fund | Montecito Medical Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing receivable, after allowance for credit loss |  |  |  |  |  | $ (15,600) |  |  |  |  |  |  |  |  |  |  |
Properties | property |  |  |  |  |  | 6 |  |  |  |  |  |  |  |  |  |  |
Combined purchase price of medical office buildings |  |  |  |  |  | $ 64,700 |  |  |  |  |  |  |  |  |  |  |
Fully Funded | Bickford |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans and leases agreement |  |  |  |  |  | 14,700 |  |  |  |  |  |  |  |  |  |  |
Number of construction loans | loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |
Note receivable interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Unlikely to be Collected Financing Receivable | Bickford Note Investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in mortgage note receivable from sale of real estate |  |  |  |  |  | (12,200) |  |  |  |  |  |  |  |  |  |  |
After 2021 | Senior Living Communities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving amount line of credit |  |  |  |  |  | 15,000 |  |  |  |  |  |  |  |  |  |  |
July 2019 Transaction | Senior Living |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans and leases agreement |  |  |  |  |  | $ 32,700 |  |  |  |  |  |  |  |  |  |  |
Notes receivable, interest rate, master credit agreement |  |  |  |  |  |  |  |  |  |  |  |  | 7.25% |  |  |  |
June 2019 Transaction | Senior Living Communities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of units in real estate property | unit |  |  |  |  |  |  |  |  |  |  | 248 |  |  |  |  |  |

X
- Definition This item represents contingent payments that would be due to a development manager if certain operating metrics or performance thresholds were met. + References No definition available. + Details
Name: | nhi_ContingentIncentivePayments
Namespace Prefix: | nhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Deferred Interest Rate, Additional Interest Rate Accrued + References No definition available. + Details
Name: | nhi_DeferredInterestRateAdditionalInterestRateAccrued
Namespace Prefix: | nhi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Estimated Credit Losses, Current Conditions Adjustment, Probability of Default and Loss Given Default, Combined + References No definition available. + Details
Name: | nhi_EstimatedCreditLossesCurrentConditionsAdjustmentCombined
Namespace Prefix: | nhi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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

X
- Definition Financing Receivable, Proceeds from Principal Payments + References No definition available. + Details
Name: | nhi_FinancingReceivableProceedsFromPrincipalPayments
Namespace Prefix: | nhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This item represents the duration of an optional renewal of the maturity date for a note receivable. + References No definition available. + Details
Name: | nhi_FinancingReceivableRenewalTerm
Namespace Prefix: | nhi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Stated Interest Rate + References No definition available. + Details
Name: | nhi_FinancingReceivableStatedInterestRate
Namespace Prefix: | nhi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The concept represents a total loan term in number of years + References No definition available. + Details
Name: | nhi_FinancingReceviableTerm
Namespace Prefix: | nhi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase in Mortgage note Receivable from Sale of Real Estate + References No definition available. + Details
Name: | nhi_IncreaseInMortgageNoteReceivableFromSaleOfRealEstate
Namespace Prefix: | nhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Incremental Percentage Increase in the Stated Rate of a Note Receivable + References No definition available. + Details
Name: | nhi_IncrementalPercentageIncreaseInTheStatedRateOfANoteReceivable
Namespace Prefix: | nhi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loans and Lease Receivable, Number Of Underlying Properties + References No definition available. + Details
Name: | nhi_LoansAndLeaseReceivableNumberOfUnderlyingProperties
Namespace Prefix: | nhi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The reference rate for variable rate loans receivable, such as LIBOR or the US Treasury rate. + References No definition available. + Details
Name: | nhi_LoansReceivableDescriptionVariableRateBasisReferenceRate
Namespace Prefix: | nhi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans and Lease Receivable, Maximum Revolving Amount + References No definition available. + Details
Name: | nhi_LoansandLeaseReceivableMaximumRevolvingAmount
Namespace Prefix: | nhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This concept reflects the interest rate to be received on a loan receivable. + References No definition available. + Details
Name: | nhi_NoteReceivableInterestRate
Namespace Prefix: | nhi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This item represents the interest rate to be received for outstanding borrowings under a master credit agreement. + References No definition available. + Details
Name: | nhi_NotesReceivableInterestRateMasterCreditAgreement
Namespace Prefix: | nhi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Construction Loans + References No definition available. + Details
Name: | nhi_NumberOfConstructionLoans
Namespace Prefix: | nhi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Health Care Properties Related To Mortgage Notes Receivables + References No definition available. + Details
Name: | nhi_NumberOfHealthCarePropertiesRelatedToMortgageNotesReceivables
Namespace Prefix: | nhi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Mortgage Note Receivable Facilities + References No definition available. + Details
Name: | nhi_NumberOfMortgageNoteReceivableFacilities
Namespace Prefix: | nhi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Real Estate Properties Acquired + References No definition available. + Details
Name: | nhi_NumberOfRealEstatePropertiesAcquired
Namespace Prefix: | nhi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents the estimated increase in the probability of default as part of managements assessment of estimated credit losses based on current economic conditions. + References No definition available. + Details
Name: | nhi_ProbabilityOfDefaultIncreaseCurrentConditionsAdjustment
Namespace Prefix: | nhi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This item represents the minimum amount of a purchase option when the agreement indicates the greater of this amount of fair value. + References No definition available. + Details
Name: | nhi_PurchaseOptionAmountMinimum
Namespace Prefix: | nhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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

X
- Definition Revolving Note Receivable, Amount Outstanding + References No definition available. + Details
Name: | nhi_RevolvingNoteReceivableAmountOutstanding
Namespace Prefix: | nhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 40 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481628/310-20-40-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before allowance for credit loss, of accrued interest on financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase (decrease) in allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, after allowance for credit loss, of 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
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 + Details
Name: | us-gaap_InterestAndFeeIncomeLoansAndLeases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)(e)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column E)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column E)(Footnote 4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-10 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 45 -Paragraph 39 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477346/946-830-45-39 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(1)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column E)(Footnote 6)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 + Details
Name: | us-gaap_InterestIncomeOperating
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Rate of interest on investment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 55 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477439/946-210-55-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-5 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-12A(Column A)(Footnote 2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-12A(Column A)(Footnote 3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column A)(Footnote 2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column A)(Footnote 2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column A)(Footnote 4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column A)(Footnote 3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column A)(Footnote 4)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-3 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column A)(Footnote 3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6 + Details
Name: | us-gaap_InvestmentInterestRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at stated interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478898/942-825-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 825 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478898/942-825-50-1 + Details
Name: | us-gaap_LoansAndLeasesReceivableCommitmentsFixedRates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(5)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_NotesReceivableNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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

X
- Definition Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_RepaymentsOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_MajorCustomersAxis=nhi_CarriageCrossingSeniorLivingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=nhi_CompassSeniorLivingLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=nhi_ClearSkySeniorLivingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=nhi_MontecitoMedicalRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=nhi_BickfordSeniorLivingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=nhi_SeniorLivingCommunitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=nhi_EBITDARMCoverage10xTo15xMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=nhi_MezzanineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=nhi_BickfordMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=nhi_SecuredByRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=nhi_NotSecuredByRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=nhi_CapitalFundingGroupIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=nhi_PropertyHeldByFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=nhi_FullyFundedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_UnlikelyToBeCollectedFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=nhi_BickfordNoteInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=nhi_After2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=nhi_July2019TransactionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=nhi_SeniorLivingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=nhi_June2019TransactionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |