XML 27 R76.htm IDEA: XBRL DOCUMENT
v2.4.1.9

SEGMENT REPORTING (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 item | Dec. 31, 2013 item | Dec. 31, 2012 item
SEGMENT REPORTING |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments |  |  |  |  |  |  |  |  | 5 us-gaap_NumberOfReportableSegments | 4 us-gaap_NumberOfReportableSegments | 4 us-gaap_NumberOfReportableSegments
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 88,511 us-gaap_Revenues | $ 89,393 us-gaap_Revenues | $ 83,269 us-gaap_Revenues | $ 75,174 us-gaap_Revenues | $ 77,028 us-gaap_Revenues | $ 79,350 us-gaap_Revenues | $ 71,625 us-gaap_Revenues | $ 64,832 us-gaap_Revenues | $ 336,347 us-gaap_Revenues | $ 292,835 us-gaap_Revenues | $ 277,796 us-gaap_Revenues
Depreciation and amortization |  |  |  |  |  |  |  |  | 51,234 us-gaap_DepreciationDepletionAndAmortization | 48,737 us-gaap_DepreciationDepletionAndAmortization | 50,587 us-gaap_DepreciationDepletionAndAmortization
Non-cash stock-based compensation |  |  |  |  |  |  |  |  | 4,323 us-gaap_ShareBasedCompensation | 4,454 us-gaap_ShareBasedCompensation | 3,323 us-gaap_ShareBasedCompensation
Operating income (loss) | 19,563 us-gaap_OperatingIncomeLoss | 28,158 us-gaap_OperatingIncomeLoss | 21,607 us-gaap_OperatingIncomeLoss | 16,248 us-gaap_OperatingIncomeLoss | 16,063 us-gaap_OperatingIncomeLoss | 20,038 us-gaap_OperatingIncomeLoss | 15,906 us-gaap_OperatingIncomeLoss | 12,078 us-gaap_OperatingIncomeLoss | 85,576 us-gaap_OperatingIncomeLoss | 64,085 us-gaap_OperatingIncomeLoss | 56,638 us-gaap_OperatingIncomeLoss
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 369,582 us-gaap_PropertyPlantAndEquipmentNet |  |  |  | 254,632 us-gaap_PropertyPlantAndEquipmentNet |  |  |  | 369,582 us-gaap_PropertyPlantAndEquipmentNet | 254,632 us-gaap_PropertyPlantAndEquipmentNet |
Goodwill | 45,077 us-gaap_Goodwill |  |  |  | 45,077 us-gaap_Goodwill |  |  |  | 45,077 us-gaap_Goodwill | 45,077 us-gaap_Goodwill |
Total assets | 925,030 us-gaap_Assets |  |  |  | 859,719 us-gaap_Assets |  |  |  | 925,030 us-gaap_Assets | 859,719 us-gaap_Assets |
Capital Expenditures |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 58,300 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 69,316 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 42,154 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
U.S. Wireless |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 153,040 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_USWirelessBusinessMember | 107,930 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_USWirelessBusinessMember | 102,817 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_USWirelessBusinessMember
International wireless |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 88,650 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_InternationalWirelessMember | 91,432 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_InternationalWirelessMember | 81,463 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_InternationalWirelessMember
Wireline |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 85,284 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_WirelineMember | 84,585 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_WirelineMember | 85,524 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_WirelineMember
Equipment and other |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 9,373 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember | 8,888 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember | 7,992 us-gaap_Revenues / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember
Reconciling Items |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 3,980 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember | 2,967 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember | 2,625 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember
Non-cash stock-based compensation |  |  |  |  |  |  |  |  | 4,323 us-gaap_ShareBasedCompensation / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember | 3,805 us-gaap_ShareBasedCompensation / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember | 3,323 us-gaap_ShareBasedCompensation / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember
Operating income (loss) |  |  |  |  |  |  |  |  | (26,399)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember | (25,978)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember | (21,040)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 14,655 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember |  |  |  | 6,731 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember |  |  |  | 14,655 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember | 6,731 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember |
Total assets | 288,162 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember |  |  |  | 395,692 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember |  |  |  | 288,162 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember | 395,692 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember |
Capital Expenditures |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 3,464 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember | 3,881 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember | 2,956 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember
Reconciling Items | Discontinued operations |  |  |  |  |  |  |  |  |  |  |
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Total assets | 175 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |  |  |  | 4,748 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |  |  |  | 175 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember | 4,748 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |
U.S. Wireless | Operating segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 154,592 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 109,005 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 103,768 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 14,345 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 14,308 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 16,072 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember
Operating income (loss) |  |  |  |  |  |  |  |  | 89,187 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 54,867 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 60,290 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 79,910 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember |  |  |  | 73,592 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember |  |  |  | 79,910 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 73,592 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember |
Goodwill | 32,148 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember |  |  |  | 32,148 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember |  |  |  | 32,148 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 32,148 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember |
Total assets | 188,377 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember |  |  |  | 146,346 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember |  |  |  | 188,377 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 146,346 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember |
Capital Expenditures |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 33,446 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 34,895 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 9,792 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember
U.S. Wireless | Operating segments | U.S. Wireless |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 153,040 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_USWirelessBusinessMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 107,930 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_USWirelessBusinessMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 102,817 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_USWirelessBusinessMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember
U.S. Wireless | Operating segments | Wireline |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 609 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_WirelineMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 610 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_WirelineMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 603 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_WirelineMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember
U.S. Wireless | Operating segments | Equipment and other |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 943 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 465 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember | 348 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelessMember
International Integrated Telephony | Operating segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 86,932 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 93,446 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 94,135 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 17,408 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 17,975 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 17,963 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember
Operating income (loss) |  |  |  |  |  |  |  |  | 19,628 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 28,212 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 23,203 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 108,972 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember |  |  |  | 118,917 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember |  |  |  | 108,972 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 118,917 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember |
Total assets | 201,335 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember |  |  |  | 197,903 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember |  |  |  | 201,335 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 197,903 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember |
Capital Expenditures |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 10,646 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 12,452 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 14,369 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember
International Integrated Telephony | Operating segments | International wireless |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 26,819 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_InternationalWirelessMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 30,334 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_InternationalWirelessMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 27,084 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_InternationalWirelessMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember
International Integrated Telephony | Operating segments | Wireline |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 59,129 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_WirelineMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 61,475 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_WirelineMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 65,313 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_WirelineMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember
International Integrated Telephony | Operating segments | Equipment and other |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 984 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 1,637 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember | 1,738 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_InternationalIntegratedTelephonyMember
Island Wireless | Operating segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 68,575 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 67,653 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 60,096 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 10,671 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 10,305 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 11,067 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember
Operating income (loss) |  |  |  |  |  |  |  |  | 9,046 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 8,610 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | (3,334)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 26,590 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember |  |  |  | 29,310 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember |  |  |  | 26,590 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 29,310 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember |
Goodwill | 5,438 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember |  |  |  | 5,438 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember |  |  |  | 5,438 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 5,438 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember |
Total assets | 74,563 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember |  |  |  | 74,427 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember |  |  |  | 74,563 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 74,427 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember |
Capital Expenditures |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 6,064 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 5,536 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 4,529 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember
Island Wireless | Operating segments | International wireless |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 61,831 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_InternationalWirelessMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 61,098 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_InternationalWirelessMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 54,379 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_InternationalWirelessMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember
Island Wireless | Operating segments | Equipment and other |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 6,744 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 6,555 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember | 5,717 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_IslandWirelessMember
U.S. Wireline | Operating segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 25,799 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 22,731 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 19,797 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 4,725 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 3,182 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 2,860 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember
Operating income (loss) |  |  |  |  |  |  |  |  | (3,668)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | (1,076)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | (2,481)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 28,113 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember |  |  |  | 26,082 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember |  |  |  | 28,113 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 26,082 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember |
Goodwill | 7,491 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember |  |  |  | 7,491 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember |  |  |  | 7,491 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 7,491 us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember |
Total assets | 42,446 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember |  |  |  | 45,351 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember |  |  |  | 42,446 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 45,351 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember |
Capital Expenditures |  |  |  |  |  |  |  |  |  |  |
Capital expenditures |  |  |  |  |  |  |  |  | 4,680 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 12,552 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 10,508 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember
U.S. Wireline | Operating segments | Wireline |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 25,546 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_WirelineMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 22,500 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_WirelineMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 19,608 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_WirelineMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember
U.S. Wireline | Operating segments | Equipment and other |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 253 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 231 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember | 189 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_USWirelineMember
Energy | Operating segments |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 449 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_EnergyMember |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 105 us-gaap_DepreciationDepletionAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_EnergyMember |  |
Operating income (loss) |  |  |  |  |  |  |  |  | (2,218)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_EnergyMember |  |
Segment Assets |  |  |  |  |  |  |  |  |  |  |
Net fixed assets | 111,342 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_EnergyMember |  |  |  |  |  |  |  | 111,342 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_EnergyMember |  |
Total assets | 130,124 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_EnergyMember |  |  |  |  |  |  |  | 130,124 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = atni_EnergyMember |  |
Energy | Operating segments | Equipment and other |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | $ 449 us-gaap_Revenues / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_ProductOrServiceAxis = atni_EquipmentAndOtherMember / us-gaap_StatementBusinessSegmentsAxis = atni_EnergyMember |  |

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