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Organization, Consolidation and Presentation of Financial Statements
12 Months Ended
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Organization, Consolidation and Presentation of Financial Statements Disclosure
Note 1. Organization and Nature of Business

National Health Investors, Inc. (“NHI,” “the Company,” “we,” “us” or “our”), established in 1991 as a Maryland corporation, is a self-managed real estate investment trust (“REIT”) specializing in sale-leaseback, joint venture, mortgage and mezzanine financing of need-driven and discretionary senior housing and medical facility investments. Our portfolio consists of lease, mortgage and other note investments in independent living facilities, assisted living facilities, entrance-fee communities, senior living campuses, skilled nursing facilities, hospitals and medical office buildings. As of December 31, 2020, we had investments of $3,262,381,000 (excluding our corporate office of $2,689,000) in 228 health care real estate properties located in 34 states and leased pursuant primarily to triple-net leases to 34 lessees consisting of 151 senior housing communities (“SHO”), 72 skilled nursing facilities, 3 hospitals and 2 medical office buildings. Our portfolio of 14 mortgages along with other notes receivable totaled $297,373,000, excluding an allowance for expected credit losses of $4,946,000, as of December 31, 2020. Units, beds and square footage disclosures in these consolidated financial statements are unaudited.