Document and Entity Information
Document and Entity Information Document | Aug. 10, 2020 | May 11, 2020 | Feb. 19, 2020 |
Document And Entity Information [Abstract] | |||
Document Type | 8-K | ||
Entity Incorporation, State or Country Code | MD | ||
Document Period End Date | Aug. 10, 2020 | ||
Entity Registrant Name | National Health Investors Inc | ||
Entity Address, Address Line One | 222 Robert Rose Drive | ||
Entity Address, City or Town | Murfreesboro | ||
Entity Address, State or Province | TN | ||
Entity Address, Postal Zip Code | 37129 | ||
City Area Code | 615 | ||
Local Phone Number | 890-9100 | ||
Entity File Number | 001-10822 | ||
Entity Tax Identification Number | 62-1470956 | ||
Written Communications | false | ||
Soliciting Material | false | ||
Pre-commencement Tender Offer | false | ||
Pre-commencement Issuer Tender Offer | false | ||
Title of 12(b) Security | Common Stock, $0.01 par value | ||
Trading Symbol | NHI | ||
Security Exchange Name | NYSE | ||
Entity Emerging Growth Company | false | ||
Entity Central Index Key | 0000877860 | ||
Amendment Flag | false |