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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":"F4","text":"Between zero (0) and 150% of the PSU's 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":"F4","text":"Between zero (0) and 150% of the PSU's will generally vest, if at all, as of the end of the performance period on March 12, 2027."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"This includes an adjustment to remove one share incorrectly included in columns 5 and 7 of Mr. Martin's previous Form 4 filing on March 12, 2024."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"This includes an adjustment to remove one share incorrectly included in column 9 of Mr. Martin's previous Form 4 filing on March 14, 2024."}],"balance_after":21720,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":21720},"source":{"system":"sec-edgar","filing":"0001415889-24-008474","document":"form4a-03192024_070326.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/879585/000141588924008474/form4a-03192024_070326.xml","form_type":"4/A","original_submission_date":"2024-03-14"}},{"id":1570862,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55694,"kind":"person","name":"Martin Brad W","position":1,"cik":"0001739251","reported_name":"Martin Brad W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF EXECUTIVE OFFICER"}}],"security":"Common Stock","published_at":"2024-03-19T19:48:34.000Z","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 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 PSU's will generally vest, if at all, as of the end of the performance period on March 14, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Between zero (0) and 150% of the PSU's will generally vest, if at all, as of the end of the performance period on March 14, 2027."}],"balance_after":21721,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":21721},"source":{"system":"sec-edgar","filing":"0001415889-24-007938","document":"form4-03142024_070317.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/879585/000141588924007938/form4-03142024_070317.xml","form_type":"4"}},{"id":1577401,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55694,"kind":"person","name":"Martin Brad W","position":1,"cik":"0001739251","reported_name":"Martin Brad W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF OPERATING OFFICER"}}],"security":"Common Stock","published_at":"2024-03-14T19:03:26.000Z","date":"2024-03-14","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 14, 2025, 2026, 2027 and 2028. Upon vesting, Mr. Martin will receive a number of shares of common stock equal to the number of restricted stock units that have vested."}],"balance_after":59812,"source":{"system":"sec-edgar","filing":"0001415889-24-007938","document":"form4-03142024_070317.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/879585/000141588924007938/form4-03142024_070317.xml","form_type":"4"}},{"id":1582615,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55694,"kind":"person","name":"Martin Brad W","position":1,"cik":"0001739251","reported_name":"Martin Brad W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF OPERATING OFFICER"}}],"security":"Performance-Based Restricted Stock Units","published_at":"2024-03-12T16:18:07.000Z","date":"2024-03-08","kind":"exercise","planned":false,"acquired":true,"shares":7500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Each PSU represents a contingent right to receive one share of the Issuer's common stock, subject to the achievement of pre-established relative 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 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 (3)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Refer to existing footnote (3)."}],"balance_after":0,"derivative":{"exercise_price":0,"underlying":"Common Stock","underlying_shares":7500},"source":{"system":"sec-edgar","filing":"0001415889-24-007609","document":"form4-03122024_040301.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/879585/000141588924007609/form4-03122024_040301.xml","form_type":"4"}},{"id":1582614,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55694,"kind":"person","name":"Martin Brad W","position":1,"cik":"0001739251","reported_name":"Martin Brad W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF OPERATING OFFICER"}}],"security":"Common Stock","published_at":"2024-03-12T16:18:07.000Z","date":"2024-03-11","kind":"tax_withholding","planned":false,"acquired":false,"shares":691,"price":32.99,"value":22796.09,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents shares withheld by the Company for payment of Mr. Martin's Tax obligations arising from the vesting of previously granted Restricted Stock Units."}],"balance_after":41638,"source":{"system":"sec-edgar","filing":"0001415889-24-007609","document":"form4-03122024_040301.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/879585/000141588924007609/form4-03122024_040301.xml","form_type":"4"}},{"id":1582613,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55694,"kind":"person","name":"Martin Brad W","position":1,"cik":"0001739251","reported_name":"Martin Brad W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF OPERATING OFFICER"}}],"security":"Common Stock","published_at":"2024-03-12T16:18:07.000Z","date":"2024-03-08","kind":"tax_withholding","planned":false,"acquired":false,"shares":2213,"price":33.06,"value":73161.78,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares withheld by the Company for payment of Mr. Martin's tax obligation arising from the vesting of previously granted Performance Stock Units."}],"balance_after":42329,"source":{"system":"sec-edgar","filing":"0001415889-24-007609","document":"form4-03122024_040301.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/879585/000141588924007609/form4-03122024_040301.xml","form_type":"4"}},{"id":1582612,"issuer":{"id":24,"kind":"organization","name":"ATN International, Inc.","symbol":"ATNI"},"owners":[{"id":55694,"kind":"person","name":"Martin Brad W","position":1,"cik":"0001739251","reported_name":"Martin Brad W","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF OPERATING OFFICER"}}],"security":"Common Stock","published_at":"2024-03-12T16:18:07.000Z","date":"2024-03-08","kind":"exercise","planned":false,"acquired":true,"shares":6450,"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 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 PSU's 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 PSU's 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 (\"PSU\") represents a contingent right to receive one share of the Issuer's common stock, subject to 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 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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