EQUITY (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Stockholders' equity
Equity, beginning of period			$ 699,855	$ 394,240
Stock-based compensation			3,381	3,419
Comprehensive income:
Net income	18,914	307,752	43,636	329,093
Other comprehensive income
Gain on interest rate swap (net of tax)				6,985
Comprehensive income			43,636	336,078
Issuance of common stock upon exercise of stock options			1,106	6,778
Dividends declared on common stock			(13,218)	(11,982)
Distributions to non-controlling interests			(7,932)	(5,532)
Investments made by non-controlling interests				135
Sale of non-controlling interest			(59)	(13,634)
Purchase of treasury stock			(1,850)	(6,615)
Equity, end of period	724,919	702,887	724,919	702,887
Atlantic Tele-Network, Inc.
Stockholders' equity
Equity, beginning of period			643,330	334,146
Stock-based compensation			3,381	3,419
Comprehensive income:
Net income			35,520	293,859
Other comprehensive income
Gain on interest rate swap (net of tax)				6,985
Comprehensive income			35,520	300,844
Issuance of common stock upon exercise of stock options			1,106	6,778
Dividends declared on common stock			(13,218)	(11,982)
Purchase of treasury stock			(1,850)	(6,615)
Equity, end of period	668,269	626,590	668,269	626,590
Non-Controlling Interests
Stockholders' equity
Equity, beginning of period			56,525	60,094
Comprehensive income:
Net income			8,116	35,234
Other comprehensive income
Comprehensive income			8,116	35,234
Distributions to non-controlling interests			(7,932)	(5,532)
Investments made by non-controlling interests				135
Sale of non-controlling interest			(59)	(13,634)
Equity, end of period	$ 56,650	$ 76,297	$ 56,650	$ 76,297