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The aggregate number of shares issued may range from zero (0) shares to 150% of the target number of shares reported in columns 5 and 7 of this report."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Between zero (0) and 150% of the PSUs will generally vest, if at all, as of the end of the performance period on March 12, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Between zero (0) and 150% of the PSUs will generally vest, if at all, as of the end of the performance period on March 12, 2027."}],"balance_after":21720,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":21720},"source":{"system":"sec-edgar","filing":"0001415889-24-008060","document":"form4-03142024_100339.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/879585/000141588924008060/form4-03142024_100339.xml","form_type":"4"}},{"id":1577407,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55695,"kind":"person","name":"PRIOR MICHAEL T","position":1,"cik":"0001244465","reported_name":"PRIOR MICHAEL T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"EXECUTIVE CHAIRMAN"}}],"security":"Common Stock","published_at":"2024-03-14T22:54:50.000Z","date":"2024-03-12","kind":"grant","planned":false,"acquired":true,"shares":21720,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The securities described are restricted stock units and will vest in four equal installments on each of March 12, 2025, 2026, 2027 and 2028.  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The aggregate number of shares actually vested represents approximately 86% of the target number of shares reported in columns 5 and 7 of this report. The end of the performance period was March 8, 2024."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Refer to existing footnote (4)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Refer to existing footnote (4)."}],"balance_after":0,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":19350},"source":{"system":"sec-edgar","filing":"0001415889-24-007700","document":"form4-03122024_100343.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/879585/000141588924007700/form4-03122024_100343.xml","form_type":"4"}},{"id":1582623,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55695,"kind":"person","name":"PRIOR MICHAEL T","position":1,"cik":"0001244465","reported_name":"PRIOR MICHAEL T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"EXECUTIVE CHAIRMAN"}}],"security":"Common Stock","published_at":"2024-03-12T22:02:49.000Z","date":"2024-03-11","kind":"tax_withholding","planned":false,"acquired":false,"shares":3186,"price":32.99,"value":105106.14,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents shares withheld by the Company for payment of Mr. Prior's tax obligations arising from the vesting of previously granted Restricted Stock Units."}],"balance_after":493040,"source":{"system":"sec-edgar","filing":"0001415889-24-007700","document":"form4-03122024_100343.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/879585/000141588924007700/form4-03122024_100343.xml","form_type":"4"}},{"id":1582622,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55695,"kind":"person","name":"PRIOR MICHAEL T","position":1,"cik":"0001244465","reported_name":"PRIOR MICHAEL T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"EXECUTIVE CHAIRMAN"}}],"security":"Common Stock","published_at":"2024-03-12T22:02:49.000Z","date":"2024-03-08","kind":"tax_withholding","planned":false,"acquired":false,"shares":7742,"price":33.06,"value":255950.52,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld by the Company for payment of Mr. Prior's tax obligation arising from the vesting of previously granted Performance Stock Units."}],"balance_after":496226,"source":{"system":"sec-edgar","filing":"0001415889-24-007700","document":"form4-03122024_100343.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/879585/000141588924007700/form4-03122024_100343.xml","form_type":"4"}},{"id":1582621,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55695,"kind":"person","name":"PRIOR MICHAEL T","position":1,"cik":"0001244465","reported_name":"PRIOR MICHAEL T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"EXECUTIVE CHAIRMAN"}}],"security":"Common Stock","published_at":"2024-03-12T22:02:49.000Z","date":"2024-03-08","kind":"exercise","planned":false,"acquired":true,"shares":16641,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Common stock issued upon vesting of performance-based RSU (\"PSU\") based on the achievement of pre-established relative total shareholder return (\"TSR\") goals that were set by the Compensation Committee of the Issuer's Board of Directors, based on comparing the Issuer's TSR relative to the TSR of the Russell 2000 Index, using the average closing price of the shares for the 40 days before and including each of the first and last days of the applicable performance period. 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The price reported reflects the weighted average sale price. Full information regarding the number of shares sold and the prices at which the transaction were effected is available to the SEC staff, the issuer or any security holder of the issuer, upon request."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes adjustment to remove 1 share incorrectly included in column 5 of Mr. Prior's previous Form 4 filing."}],"balance_after":495118,"source":{"system":"sec-edgar","filing":"0001415889-23-015403","document":"form4-11222023_081157.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/879585/000141588923015403/form4-11222023_081157.xml","form_type":"4"}},{"id":1937368,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55695,"kind":"person","name":"PRIOR MICHAEL T","position":1,"cik":"0001244465","reported_name":"PRIOR MICHAEL 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The aggregate number of shares issued may range from zero (0) shares to 150% of the target number of shares reported in columns 7 and 9 of this report."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Between zero (0) and 150% of the P SUs will generally vest, if at all, as of the end of the performance period on March 7, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Between zero (0) and 150% of the P SUs will generally vest, if at all, as of the end of the performance period on March 7, 2026."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"Each performance-based RSU (\"P SU\") represents a contingent right to receive one share of the Issuer's common stock, subject to the achievement of pre-established relative total shareholder return (\"TSR\") goals that were set by the Compensation Committee of the Issuer's Board of Directors, based on comparing the Issuer's TSR relative to the TSR of the Russell 2000 Index, using the average closing price of the shares for the 40 days before and including each of the first and last days of the applicable performance period. The aggregate number of shares issued may range from zero (0) shares to 150% of the target number of shares reported in columns 7 and 9 of this report."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Each performance-based RSU (\"P SU\") represents a contingent right to receive one share of the Issuer's common stock, subject to the achievement of pre-established relative total shareholder return (\"TSR\") goals that were set by the Compensation Committee of the Issuer's Board of Directors, based on comparing the Issuer's TSR relative to the TSR of the Russell 2000 Index, using the average closing price of the shares for the 40 days before and including each of the first and last days of the applicable performance period. 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the 40 days before and including each of the first and last days of the applicable performance period. The aggregate number of shares issued may range from zero (0) shares to 150% of the target number of shares reported in columns 7 and 9 of this report."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Between zero (0) and 150% of the PSUs will generally vest, if at all, as of the end of the performance period on March 8, 2024."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Between zero (0) and 150% of the PSUs will generally vest, if at all, as of the end of the performance period on March 8, 2024."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"Each performance-based RSU (\"PSU\") represents a contingent right to receive one share of the Issuer's common stock, subject to the achievement of pre-established relative total shareholder return (\"TSR\") goals that were set by the Compensation Committee of the Issuer's Board of Directors, based on comparing the Issuer's TSR relative to the TSR of the Russell 2000 Index, using the average closing price of the shares for the 40 days before and including each of the first and last days of the applicable performance period. The aggregate number of shares issued may range from zero (0) shares to 150% of the target number of shares reported in columns 7 and 9 of this report."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Each performance-based RSU (\"PSU\") represents a contingent right to receive one share of the Issuer's common stock, subject to the achievement of pre-established relative total shareholder return (\"TSR\") goals that were set by the Compensation Committee of the Issuer's Board of Directors, based on comparing the Issuer's TSR relative to the TSR of the Russell 2000 Index, using the average closing price of the shares for the 40 days before and including each of the first and last days of the applicable performance period. The aggregate number of shares issued may range from zero (0) shares to 150% of the target number of shares reported in columns 7 and 9 of this report."}],"balance_after":19350,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":19350},"source":{"system":"sec-edgar","filing":"0001179110-21-003286","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/879585/000117911021003286/edgar.xml","form_type":"4"}},{"id":2795561,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55695,"kind":"person","name":"PRIOR MICHAEL T","position":1,"cik":"0001244465","reported_name":"PRIOR MICHAEL T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman and CEO"}}],"security":"Common Stock","published_at":"2021-03-12T01:00:15.000Z","date":"2021-03-09","kind":"grant","acquired":true,"shares":19350,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The securities described are restricted stock units and will vest in four equal installments on each of March 9, 2022, 2023, 2024 and 2025. 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The price reported reflects the weighted average sale price. Full information regarding the number of shares sold and the prices at which the transaction were effected is available to the SEC staff, the issuer or any security holder of the issuer, upon request. 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The price reported reflects the weighted average sale price. Full information regarding the number of shares sold and the prices at which the transaction were effected is available to the SEC staff, the issuer or any security holder of the issuer, upon request. 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The price reported reflects the weighted average sale price. Full information regarding the number of shares sold and the prices at which the transaction were effected is available to the SEC staff, the issuer or any security holder of the issuer, upon request. 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The price reported reflects the weighted average sale price. Full information regarding the number of shares sold and the prices at which the transaction were effected is available to the SEC staff, the issuer or any security holder of the issuer, upon request. The sales reported on this Form 4 were effected pursuant to Rule 10b5-1 trading plans adopted by the Reporting Person."}],"balance_after":444050,"source":{"system":"sec-edgar","filing":"0001179110-20-005330","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/879585/000117911020005330/edgar.xml","form_type":"4"}},{"id":3165854,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55695,"kind":"person","name":"PRIOR MICHAEL T","position":1,"cik":"0001244465","reported_name":"PRIOR MICHAEL T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman and CEO"}}],"security":"Common Stock","published_at":"2020-05-01T13:24:32.000Z","date":"2020-04-29","kind":"sale","acquired":false,"shares":900,"price":76.82,"value":69138.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These transactions were executed in multiple trades at prices ranging from $76.17 to $76.92. The price reported reflects the weighted average sale price. Full information regarding the number of shares sold and the prices at which the transaction were effected is available to the SEC staff, the issuer or any security holder of the issuer, upon request. The sales reported on this Form 4 were effected pursuant to Rule 10b5-1 trading plans adopted by the Reporting Person."}],"balance_after":444450,"source":{"system":"sec-edgar","filing":"0001179110-20-005330","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/879585/000117911020005330/edgar.xml","form_type":"4"}},{"id":3165853,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55695,"kind":"person","name":"PRIOR MICHAEL T","position":1,"cik":"0001244465","reported_name":"PRIOR MICHAEL T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman and CEO"}}],"security":"Common Stock","published_at":"2020-05-01T13:24:32.000Z","date":"2020-04-29","kind":"sale","acquired":false,"shares":1100,"price":75.55,"value":83105.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These transactions were executed in multiple trades at prices ranging from $75 to $75.88. The price reported reflects the weighted average sale price. Full information regarding the number of shares sold and the prices at which the transaction were effected is available to the SEC staff, the issuer or any security holder of the issuer, upon request. The sales reported on this Form 4 were effected pursuant to Rule 10b5-1 trading plans adopted by the Reporting Person."}],"balance_after":445350,"source":{"system":"sec-edgar","filing":"0001179110-20-005330","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/879585/000117911020005330/edgar.xml","form_type":"4"}},{"id":3169550,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55695,"kind":"person","name":"PRIOR MICHAEL T","position":1,"cik":"0001244465","reported_name":"PRIOR MICHAEL T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman and CEO"}}],"security":"Common Stock","published_at":"2020-04-27T22:56:05.000Z","date":"2020-04-24","kind":"sale","acquired":false,"shares":939,"price":70,"value":65730.0,"ownership":{"direct":false,"nature":"Trustee of Lauren S. 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