XML 22 R11.htm IDEA: XBRL DOCUMENT
v3.7.0.1

USE OF ESTIMATES | 6 Months Ended
--- | ---
Jun. 30, 2017
USE OF ESTIMATES |
USE OF ESTIMATES | 3. USE OF ESTIMATES The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting periods. The most significant estimates relate to the allowance for doubtful accounts, useful lives of the Company’s fixed and finite-lived intangible assets, allocation of purchase price to assets acquired and liabilities assumed in business combinations, fair value of indefinite-lived intangible assets, goodwill and income taxes. Actual results could differ significantly from those estimates.

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

X
- Definition This element represents the disclosure, which provides the entity's explanation that the preparation of financial statements in conformity with generally accepted accounting principles requires the use of management estimates. + References No definition available. + Details
Name: | atni_UseOfEstimatesDisclosureTextBlock
Namespace Prefix: | atni_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration