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Note 8 - Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Year Ended December 31, |
|  | 2024 |  |  | 2023 |  |  | 2022 |
Basic: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 15,393,782 |  |  |  | 15,310,142 |  |  |  | 15,410,222 |
Net income attributable to common stockholders of National Healthcare Corporation |  | $ | 101,927 |  |  | $ | 66,798 |  |  | $ | 22,445 |
Earnings per common share, basic |  | $ | 6.62 |  |  | $ | 4.36 |  |  | $ | 1.46 |
Diluted: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 15,393,782 |  |  |  | 15,310,142 |  |  |  | 15,410,222 |
Dilutive effect of stock options |  |  | 204,746 |  |  |  | 67,201 |  |  |  | 36,989 |
Assumed average common shares outstanding |  |  | 15,598,528 |  |  |  | 15,377,343 |  |  |  | 15,447,211 |
Net income attributable to common stockholders of National Healthcare Corporation |  | $ | 101,927 |  |  | $ | 66,798 |  |  | $ | 22,445 |
Earnings per common share, diluted |  | $ | 6.53 |  |  | $ | 4.34 |  |  | $ | 1.45 |

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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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