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Note 8 - Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2025
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended June 30 |  |  | Six Months Ended June 30 |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Basic: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 15,462,135 |  |  |  | 15,391,535 |  |  |  | 15,450,286 |  |  |  | 15,371,150 |
Net income attributable to National HealthCare Corporation |  | $ | 23,722 |  |  | $ | 26,844 |  |  | $ | 55,927 |  |  | $ | 53,057 |
Earnings per common share, basic |  | $ | 1.53 |  |  | $ | 1.74 |  |  | $ | 3.62 |  |  | $ | 3.45 |
Diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 15,462,135 |  |  |  | 15,391,535 |  |  |  | 15,450,286 |  |  |  | 15,371,150 |
Effects of dilutive instruments |  |  | 137,503 |  |  |  | 164,077 |  |  |  | 137,497 |  |  |  | 159,474 |
Weighted average common shares outstanding |  |  | 15,599,638 |  |  |  | 15,555,612 |  |  |  | 15,587,783 |  |  |  | 15,530,624 |
Net income attributable to National HealthCare Corporation |  | $ | 23,722 |  |  | $ | 26,844 |  |  | $ | 55,927 |  |  | $ | 53,057 |
Earnings per common share, diluted |  | $ | 1.52 |  |  | $ | 1.73 |  |  | $ | 3.59 |  |  | $ | 3.42 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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