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Commitments And Contingencies Commitments and Contingencies (Schedule of Lease Commitments) (Details) | Jun. 30, 2019 USD ($)
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Maximum Commitment For All Active Development Projects | $ 47,530,000
Development in Process | (24,600,000)
Remaining Unfunded Development Commitment | 22,930,000
Development Commitment [Member] | Ignite Medical Resorts [Member] |
Maximum Commitment For All Active Development Projects | 25,350,000
Development in Process | (9,598,000)
Remaining Unfunded Development Commitment | 15,752,000
Development Commitment [Member] | Senior Living Communities [Member] |
Maximum Commitment For All Active Development Projects | 3,100,000
Development in Process | 0
Remaining Unfunded Development Commitment | 3,100,000
Development Commitment [Member] | Navion Senior Solutions [Member] |
Maximum Commitment For All Active Development Projects | 650,000
Development in Process | 0
Remaining Unfunded Development Commitment | 650,000
Capital Improvement Commitment [Member] | Woodland Village [Member] |
Maximum Commitment For All Active Development Projects | 7,450,000
Development in Process | (7,323,000)
Remaining Unfunded Development Commitment | 127,000
Capital Improvement Commitment [Member] | Senior Living Communities [Member] |
Maximum Commitment For All Active Development Projects | 6,830,000
Development in Process | (5,869,000)
Remaining Unfunded Development Commitment | 961,000
Capital Improvement Commitment [Member] | Bickford Senior Living [Member] |
Maximum Commitment For All Active Development Projects | 1,750,000
Development in Process | (1,750,000)
Remaining Unfunded Development Commitment | 0
Capital Improvement Commitment [Member] | Discovery Senior Living [Member] |
Maximum Commitment For All Active Development Projects | 500,000
Development in Process | 0
Remaining Unfunded Development Commitment | $ 500,000

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- Definition This item represents the maximum commitment for all active development projects. + References No definition available. + Details
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Namespace Prefix: | nhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition This item represents the remaining unfunded development commitment related to a lease property. + References No definition available. + Details
Name: | nhi_RemainingUnfundedDevelopmentCommitment
Namespace Prefix: | nhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The current amount of expenditures for a real estate project that has not yet been completed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.10) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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