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Note 8 - Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2025
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended March 31 |
|  | 2025 |  |  | 2024 |
Basic: |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 15,438,306 |  |  |  | 15,350,240 |
Net income attributable to National HealthCare Corporation |  | $ | 32,205 |  |  | $ | 26,213 |
Earnings per common share, basic |  | $ | 2.09 |  |  | $ | 1.71 |
Diluted: |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 15,438,306 |  |  |  | 15,350,240 |
Effects of dilutive instruments |  |  | 137,446 |  |  |  | 154,856 |
Weighted average common shares outstanding |  |  | 15,575,752 |  |  |  | 15,505,096 |
Net income attributable to National HealthCare Corporation |  | $ | 32,205 |  |  | $ | 26,213 |
Earnings per common share, diluted |  | $ | 2.07 |  |  | $ | 1.69 |

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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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