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Real Estate Schedule of New Real Estate Investments (Details) | 3 Months Ended
--- | ---
Mar. 31, 2019 USD ($) properties
Real Estate Investments During The Period | $ 90,200,000
Wingate Healthcare [Member] |
Number Of Real Estate Properties Acquired | properties | 1
Real Estate Investments During The Period | $ 52,200,000
Holiday Lease Amendment [Member] |
Number Of Real Estate Properties Acquired | properties | 1
Real Estate Investments During The Period | $ 38,000,000

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- Definition Number Of Real Estate Properties Acquired + References No definition available. + Details
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Period Type: | duration

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- Definition Real Estate Investments During The Period + References No definition available. + Details
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Namespace Prefix: | nhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |