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Commitments and Contingencies (Schedule of Lease Commitments) (Details) | Sep. 30, 2020 USD ($)
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Maximum Commitment For All Active Development Projects | $ 53,145,000
Development in Process | (46,730,000)
Remaining Unfunded Development Commitment | 6,415,000
Development Commitment [Member] | Ignite Medical Resorts [Member] |
Maximum Commitment For All Active Development Projects | 25,350,000
Development in Process | (24,313,000)
Remaining Unfunded Development Commitment | 1,037,000
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 | 7,515,000
Development in Process | (7,425,000)
Remaining Unfunded Development Commitment | 90,000
Capital Improvement Commitment [Member] | Senior Living Communities [Member] |
Maximum Commitment For All Active Development Projects | 9,930,000
Development in Process | (9,763,000)
Remaining Unfunded Development Commitment | 167,000
Capital Improvement Commitment [Member] | Wingate Healthcare [Member] |
Maximum Commitment For All Active Development Projects | 1,900,000
Development in Process | (1,532,000)
Remaining Unfunded Development Commitment | 368,000
Capital Improvement Commitment [Member] | Discovery Senior Living [Member] |
Maximum Commitment For All Active Development Projects | 900,000
Development in Process | (697,000)
Remaining Unfunded Development Commitment | 203,000
Capital Improvement Commitment [Member] | 41 Management [Member] |
Maximum Commitment For All Active Development Projects | 400,000
Development in Process | 0
Remaining Unfunded Development Commitment | 400,000
Capital Improvement Commitment [Member] | Watermark Retirement [Member] |
Maximum Commitment For All Active Development Projects | 6,500,000
Development in Process | (3,000,000)
Remaining Unfunded Development Commitment | $ 3,500,000

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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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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=120400017&loc=d3e572229-122910 + Details
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- Details
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- Details
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- Details
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