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Note 2 - Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | 2022 |  |  | 2021 |
Numerator for basic and diluted earnings per share |  | $ | 1,328,000 |  |  | $ | 194,000 |
Denominator: |  |  |  |  |  |  |  |
Denominator for basic and diluted earnings per share – weighted-average shares |  |  | 6,297,000 |  |  |  | 6,044,000 |
Effect of dilutive securities Employee stock options and restricted stock |  |  | 6,000 |  |  |  | 15,000 |
Denominator for diluted earnings per share – adjusted weighted-average shares |  |  | 6,303,000 |  |  |  | 6,059,000 |
Earnings per common share- basic |  | $ | 0.21 |  |  | $ | 0.03 |
Earnings per common share- diluted |  | $ | 0.21 |  |  | $ | 0.03 |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | 2022 |  |  | 2021 |
Revenues |  |  |  |  |  |  |  |
Domestic |  | $ | 16,655,000 |  |  | $ | 14,719,000 |
Foreign |  |  | 3,091,000 |  |  |  | 2,909,000 |
Total |  | $ | 19,746,000 |  |  | $ | 17,628,000 |
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] |
|  | 2022 |  |  | 2021 |
Net income (loss) attributable to American Shared Hospital Services |  |  |  |  |  |  |  |
Domestic |  | $ | 1,187,000 |  |  | $ | 245,000 |
Foreign |  |  | 141,000 |  |  |  | (51,000 | )
Total |  | $ | 1,328,000 |  |  | $ | 194,000 |
Reconciliation of Assets from Segment to Consolidated [Table Text Block] |
|  | 2022 |  |  | 2021 |
Total assets |  |  |  |  |  |  |  |
Domestic |  | $ | 37,575,000 |  |  | $ | 39,322,000 |
Foreign |  |  | 6,381,000 |  |  |  | 6,108,000 |
Total |  | $ | 43,956,000 |  |  | $ | 45,430,000 |

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