XML 53 R27.htm IDEA: XBRL DOCUMENT
v2.4.0.8

BASIS OF PRESENTATION (Details) (Reclassifications, General and administrative expense, USD $) In Millions, unless otherwise specified | 6 Months Ended
--- | ---
Jun. 30, 2014
Reclassifications | General and administrative expense |
Reclassifications |
Prior period reclassifications | $ 0.7

X
- Details
Name: | atni_PriorPeriodFinancialBalanceReclassificationLineItems
Namespace Prefix: | atni_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of a reclassification adjustment made to prior period financial statement amounts. + References No definition available. + Details
Name: | us-gaap_PriorPeriodReclassificationAdjustment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration