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DISCONTINUED OPERATIONS - SALE OF U.S. RETAIL WIRELESS BUSINESS (Details) - 10K (USD $) | 3 Months Ended | 12 Months Ended | 0 Months Ended | 3 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Sep. 20, 2013 | Mar. 31, 2015
Proceeds: |  |  |  |  |  |  |  |  |  |
Current assets | $ 451,374,000 us-gaap_AssetsCurrent | $ 472,003,000 us-gaap_AssetsCurrent |  |  |  | $ 451,374,000 us-gaap_AssetsCurrent | $ 472,003,000 us-gaap_AssetsCurrent |  |  |
Property, plant and equipment, net | 369,582,000 us-gaap_PropertyPlantAndEquipmentNet | 254,632,000 us-gaap_PropertyPlantAndEquipmentNet |  |  |  | 369,582,000 us-gaap_PropertyPlantAndEquipmentNet | 254,632,000 us-gaap_PropertyPlantAndEquipmentNet |  |  |
Telecommunication licenses | 44,090,000 us-gaap_IndefiniteLivedLicenseAgreements | 39,687,000 us-gaap_IndefiniteLivedLicenseAgreements |  |  |  | 44,090,000 us-gaap_IndefiniteLivedLicenseAgreements | 39,687,000 us-gaap_IndefiniteLivedLicenseAgreements |  |  |
Other assets | 7,519,000 us-gaap_OtherAssetsNoncurrent | 7,096,000 us-gaap_OtherAssetsNoncurrent |  |  |  | 7,519,000 us-gaap_OtherAssetsNoncurrent | 7,096,000 us-gaap_OtherAssetsNoncurrent |  |  |
Liabilities sold: |  |  |  |  |  |  |  |  |  |
Current liabilities | (104,069,000)us-gaap_LiabilitiesCurrent | (121,073,000)us-gaap_LiabilitiesCurrent |  |  |  | (104,069,000)us-gaap_LiabilitiesCurrent | (121,073,000)us-gaap_LiabilitiesCurrent |  |  |
Other liabilities | (19,619,000)us-gaap_OtherLiabilitiesNoncurrent | (12,784,000)us-gaap_OtherLiabilitiesNoncurrent |  |  |  | (19,619,000)us-gaap_OtherLiabilitiesNoncurrent | (12,784,000)us-gaap_OtherLiabilitiesNoncurrent |  |  |
Net gain on sale | 1,102,000 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax | 1,905,000 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax | 305,197,000 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax |  |  | 1,102,000 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax | 307,102,000 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax |  |  |
Restricted cash, current | 39,703,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue | 39,000,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue |  |  |  | 39,703,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue | 39,000,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue |  |  |
Restricted cash, long-term | 5,475,000 us-gaap_RestrictedCashAndCashEquivalentsNoncurrent | 39,000,000 us-gaap_RestrictedCashAndCashEquivalentsNoncurrent |  |  |  | 5,475,000 us-gaap_RestrictedCashAndCashEquivalentsNoncurrent | 39,000,000 us-gaap_RestrictedCashAndCashEquivalentsNoncurrent |  |  |
Impairment of intangible assets |  |  |  |  |  | 0 us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill | 0 us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill |  |  |
Minority shareholders' interests in sale of operations |  | 200,000 us-gaap_ExtraordinaryItemGainOrLossNetOfTaxAttributableToNoncontrollingInterest | 28,699,000 us-gaap_ExtraordinaryItemGainOrLossNetOfTaxAttributableToNoncontrollingInterest |  |  |  | 28,899,000 us-gaap_ExtraordinaryItemGainOrLossNetOfTaxAttributableToNoncontrollingInterest |  |  |
Amount distributed to minority shareholders |  |  |  |  |  | 16,331,000 us-gaap_PaymentsOfDividendsMinorityInterest | 26,155,000 us-gaap_PaymentsOfDividendsMinorityInterest | 2,458,000 us-gaap_PaymentsOfDividendsMinorityInterest |  |
Amount included in non-controlling interests | 60,960,000 us-gaap_MinorityInterest | 56,525,000 us-gaap_MinorityInterest |  |  |  | 60,960,000 us-gaap_MinorityInterest | 56,525,000 us-gaap_MinorityInterest |  |  |
Revenues and income from discontinued operations |  |  |  |  |  |  |  |  |  |
Income from discontinued operations, net of tax expense (benefit) of $1,967, $13,816 and $2,512 respectively |  |  | (1,960,000)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax | 3,092,000 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax | 4,034,000 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax |  | 5,166,000 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax | 29,202,000 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax |  |
AT&T Mobility | Alltel Wireless |  |  |  |  |  |  |  |  |  |
SALE OF U.S. RETAIL WIRELESS BUSINESS |  |  |  |  |  |  |  |  |  |
Consideration for sale of operations in all-cash transaction |  |  |  |  |  |  |  |  | 780,000,000 us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds / us-gaap_BusinessAcquisitionAxis = atni_AlltelWirelessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |
AT&T Mobility | Trade names | Alltel Wireless |  |  |  |  |  |  |  |  |  |
Liabilities sold: |  |  |  |  |  |  |  |  |  |
Impairment of intangible assets |  |  |  |  |  |  | 11,900,000 us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill / us-gaap_BusinessAcquisitionAxis = atni_AlltelWirelessMember / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Alltel Sale | AT&T Mobility |  |  |  |  |  |  |  |  |  |
SALE OF U.S. RETAIL WIRELESS BUSINESS |  |  |  |  |  |  |  |  |  |
Consideration for sale of operations in all-cash transaction |  |  |  |  |  |  |  |  | 780,000,000 us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |
Proceeds: |  |  |  |  |  |  |  |  |  |
Received |  |  |  |  |  |  | 702,000,000 atni_ProceedsReceivedFromDivestitureOfBusinesses / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Escrowed |  |  |  |  |  |  | 78,000,000 atni_DisposalGroupIncludingDiscontinuedOperationEscrowedCash / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Working capital |  |  |  |  |  |  | 16,828,000 atni_DisposalGroupIncludingDiscontinuedOperationWorkingCapitalProceeds / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  | 16,800,000 atni_DisposalGroupIncludingDiscontinuedOperationWorkingCapitalProceeds / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |
Adjusted proceeds |  |  |  |  |  |  | 796,828,000 us-gaap_ProceedsFromDivestitureOfBusinesses / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Current assets |  | 51,597,000 us-gaap_AssetsCurrent / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |  | 51,597,000 us-gaap_AssetsCurrent / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Property, plant and equipment, net |  | 190,970,000 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |  | 190,970,000 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Telecommunication licenses |  | 50,553,000 us-gaap_IndefiniteLivedLicenseAgreements / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |  | 50,553,000 us-gaap_IndefiniteLivedLicenseAgreements / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Other intangible assets |  | 37,434,000 us-gaap_OtherIntangibleAssetsNet / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |  | 37,434,000 us-gaap_OtherIntangibleAssetsNet / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Other assets |  | 13,202,000 us-gaap_OtherAssetsNoncurrent / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |  | 13,202,000 us-gaap_OtherAssetsNoncurrent / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Liabilities sold: |  |  |  |  |  |  |  |  |  |
Current liabilities |  | (40,674,000)us-gaap_LiabilitiesCurrent / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |  | (40,674,000)us-gaap_LiabilitiesCurrent / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Other liabilities |  | (22,796,000)us-gaap_OtherLiabilitiesNoncurrent / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |  | (22,796,000)us-gaap_OtherLiabilitiesNoncurrent / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Net assets sold or impaired |  | 280,286,000 atni_DisposalGroupIncludingDiscontinuedOperationNetAssets / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |  | 280,286,000 atni_DisposalGroupIncludingDiscontinuedOperationNetAssets / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Less: Transaction related costs |  |  |  |  |  |  | (13,517,000)atni_DisposalGroupIncludingDiscontinuedOperationTransactionCosts / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Pre-tax gain |  |  |  |  |  |  | 503,025,000 us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Less: Income taxes at effective rate |  |  |  |  |  |  | 195,923,000 us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Net gain on sale |  |  |  |  |  | 1,100,000 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember | 307,102,000 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
First release of amount of escrowed cash |  |  |  |  |  | 39,000,000 atni_DisposalGroupIncludingDiscontinuedOperationAmountOfFirstReleaseOfEscrowedCash / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |
Second release of amount of escrowed cash |  |  |  |  |  |  |  |  |  | 39,000,000 atni_DisposalGroupIncludingDiscontinuedOperationAmountOfSecondReleaseOfEscrowedCash / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember
Restricted cash |  | 78,000,000 us-gaap_RestrictedCashAndCashEquivalents / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |  | 78,000,000 us-gaap_RestrictedCashAndCashEquivalents / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Restricted cash, current | 39,000,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember | 39,000,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  | 39,000,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember | 39,000,000 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Restricted cash, long-term |  | 39,000,000 us-gaap_RestrictedCashAndCashEquivalentsNoncurrent / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |  | 39,000,000 us-gaap_RestrictedCashAndCashEquivalentsNoncurrent / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Minority shareholders' interests in sale of operations |  |  |  |  |  | 28,900,000 us-gaap_ExtraordinaryItemGainOrLossNetOfTaxAttributableToNoncontrollingInterest / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  |
Amount distributed to minority shareholders |  |  |  |  |  | 5,800,000 us-gaap_PaymentsOfDividendsMinorityInterest / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember | 18,900,000 us-gaap_PaymentsOfDividendsMinorityInterest / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Amount included in non-controlling interests | 4,500,000 us-gaap_MinorityInterest / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember | 10,000,000 us-gaap_MinorityInterest / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |  | 4,500,000 us-gaap_MinorityInterest / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember | 10,000,000 us-gaap_MinorityInterest / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |  |
Revenues and income from discontinued operations |  |  |  |  |  |  |  |  |  |
Revenue from discontinued operations |  |  |  |  |  |  | 299,519,000 us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember | 464,382,000 us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |
Income from discontinued operations, net of tax expense (benefit) of $1,967, $13,816 and $2,512 respectively |  |  |  |  |  |  | 5,166,000 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember | 29,202,000 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |
Income from discontinued operations, tax expense (benefit) |  |  |  |  |  |  | $ 2,512,000 us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriod / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember | $ 13,816,000 us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriod / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atni_USRetailWirelessBusinessMember / dei_LegalEntityAxis = atni_ATAndTMobilityLLCMember |  |

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