XML 47 R36.htm IDEA: XBRL DOCUMENT
v3.5.0.2

LONG-TERM DEBT (Details) - USD ($) $ in Millions |  |  | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 01, 2016 | May 03, 2016 | Sep. 30, 2016 | Jan. 11, 2016 | Jan. 10, 2016 | Dec. 24, 2014 | Dec. 19, 2014
Universal Service Administrative Company |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Commitment fee (as a percent) |  |  | 1.75% |  |  |  |
Amended Credit Facility [Member] |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 400.0 | $ 275.0 |  |
Term loans | Three month LIBOR | Keytech Ltd. |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Description of variable rate basis |  | three-month LIBOR |  |  |  |  |
Term loans | Ahana Debt |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Term loan assumed |  |  |  |  |  | $ 38.9 |
Outstanding debt |  |  | $ 27.7 |  |  |  |
Term loans | Ahana Debt | Minimum |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Effective interest rate (as a percent) |  |  | 4.50% |  |  |  |
Term loans | Ahana Debt | Maximum |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Effective interest rate (as a percent) |  |  | 6.00% |  |  |  |
Term loans | Public Service Electric & Gas Note [Member] |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Stated interest rate |  |  | 11.30% |  |  |  |
Revolving credit facility | Amended Credit Facility [Member] |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 225.0
Revolving credit facility | Amended Credit Facility [Member] | Minimum |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Commitment fee (as a percent) |  |  | 0.175% |  |  |  |
Revolving credit facility | Amended Credit Facility [Member] | Minimum | LIBOR |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 1.50% |  |  |  |
Revolving credit facility | Amended Credit Facility [Member] | Minimum | Base rate |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 0.50% |  |  |  |
Revolving credit facility | Amended Credit Facility [Member] | Maximum |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Commitment fee (as a percent) |  |  | 0.25% |  |  |  |
Revolving credit facility | Amended Credit Facility [Member] | Maximum | LIBOR |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 1.75% |  |  |  |
Revolving credit facility | Amended Credit Facility [Member] | Maximum | Base rate |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 0.75% |  |  |  |
Revolving credit facility | Amended Credit Facility [Member] | Amended Credit Facility [Member] |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | 200.0 |  |  |
Swingline sub-facility | Amended Credit Facility [Member] |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | 10.0
Swingline sub-facility | Amended Credit Facility [Member] | Federal Funds Effective Rate |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 0.50% |  |  |  |
Swingline sub-facility | Amended Credit Facility [Member] | Minimum | Base rate |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 1.00% |  |  |  |
Letter of credit sub-facility |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Outstanding letters of credit |  |  | $ 10.6 |  |  |  |
Letter of credit sub-facility | Wholesale Mobility Funds |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Borrowings |  |  | 0.0 |  |  |  |
Letter of credit sub-facility | Amended Credit Facility [Member] |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | 10.0
Letter of credit sub-facility | Amended Credit Facility [Member] | Wholesale Mobility Funds |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 25.0
Keytech |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Termination of facility |  |  | 24.7 |  |  |  |
Keytech | Amended Credit Facility [Member] | Amended Credit Facility [Member] |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Secured debt principal amount |  |  |  | 60.0 |  |  |
Keytech | Amended Credit Facility [Member] | Amended Credit Facility [Member] | Maximum |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Potential cash dividend |  |  |  | $ 13.0 |  |  |
Keytech | Term loans |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Term loan assumed | $ 60.0 | $ 35.4 |  |  |  |  |
Stated interest rate | 4.00% |  |  |  |  |  |
Deferred financing costs | $ 0.9 |  |  |  |  |  |
Outstanding debt |  |  | 32.1 |  |  |  |
Keytech | Term loans | Three month LIBOR |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Basis spread on variable rate (as a percent) |  | 3.25% |  |  |  |  |
Innovative |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Termination of facility |  |  | 185.5 |  |  |  |
Deferred financing costs |  |  | 0.8 |  |  |  |
Outstanding debt |  |  | $ 60.0 |  |  |  |
Innovative | Term loans |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |
Secured debt principal amount | $ 60.0 |  |  |  |  |  |

X
- Definition Represents the potential amount of cash dividends payable. + References No definition available. + Details
Name: | atni_PotentialCashDividendPayable
Namespace Prefix: | atni_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(8)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_AmortizationOfFinancingCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of financial liabilities assumed (as defined) which have been recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financial Liability -URI http://asc.fasb.org/extlink&oid=6513127 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Gross amount of debt extinguished. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | atni_TypeOfMobilityFundAxis=atni_UniversalServiceAdministrativeCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=atni_AmendedCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=atni_TermLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=atni_DebtInstrumentVariableRateBaseThreeMonthLiborMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=atni_KeytechLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atni_AhanaDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atni_PublicServiceElectricGasNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atni_AmendedCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=atni_SwinglineSubFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_FederalFundsEffectiveSwapRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | atni_TypeOfMobilityFundAxis=atni_WholesaleMobilityFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=atni_KeytechMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=atni_InnovativeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |