EARNINGS PER SHARE AND REDEEMABLE NONCONTROLLING INTERESTS - Computation (Details) - USD ($) shares in Thousands, $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Numerator: | ||||
| Net income (loss) attributable to ATN International, Inc. stockholders- Basic | $ 167,288 | $ (7,026) | $ 164,491 | $ (15,954) |
| Less: Preferred dividends | (1,648) | (1,507) | (3,242) | (2,965) |
| Net income (loss) attributable to ATN International, Inc. common stockholders-Basic | 165,640 | (8,533) | 161,249 | (18,919) |
| Net income (loss) attributable to ATN International, Inc. common stockholders-Diluted | $ 165,640 | $ (8,533) | $ 161,249 | $ (18,919) |
| Denominator: | ||||
| Weighted-average shares outstanding- Basic | 15,384 | 15,223 | 15,334 | 15,177 |
| Weighted-average shares outstanding- Diluted | 15,459 | 15,223 | 15,444 | 15,177 |
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities, and addition from assumption of issuance of common shares for dilutive potential common shares; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate value of preferred stock dividends and other adjustments necessary to derive net income apportioned to common stockholders. Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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