XML 16 R61.htm IDEA: XBRL DOCUMENT
v3.19.3

Recent Accounting Pronouncements Recent Accounting Pronouncements (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Recent Accounting Pronouncements [Abstract] |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption | $ 0 |  | $ 0 |
Lessor Property Costs Paid From Tenant Escrow | 1,608,000 | $ 0 | 4,205,000 | $ 0
Operating Lease, Right-of-Use Asset | $ 1,176,000 |  | $ 1,176,000 |

X
- Definition This item represents lessor property costs such as property taxes and hazard insurance paid from tenant escrow funds pursuant to the terms of a triple-net real estate lease. + References No definition available. + Details
Name: | nhi_LessorPropertyCostsPaidFromTenantEscrow
Namespace Prefix: | nhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Recent Accounting Pronouncements [Abstract] + References No definition available. + Details
Name: | nhi_RecentAccountingPronouncementsAbstract
Namespace Prefix: | nhi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. + References No definition available. + Details
Name: | us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant