EQUITY (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) subsidiary	Jun. 30, 2015 USD ($)
Stockholders' equity
Equity, beginning of period			$ 761,724	$ 738,182
Stock-based compensation			3,626	2,677
Comprehensive income:
Net income (loss)	$ (1,886)	$ 15,018	8,911	14,526
Other comprehensive income
Foreign currency translation adjustment	(40)	30	(36)	28
Total comprehensive income	(1,926)	15,048	8,875	14,554
Issuance of common stock upon exercise of stock options			585	2,074
Dividends declared on common stock			(10,330)	(9,306)
Distributions to non-controlling interests			(4,404)	(9,261)
Investments made by minority shareholders in consolidated affiliates			21,904	905
Noncontrolling Interest, Increase from Sale of Parent Equity Interest				20,013
Sale of non-controlling interest				20,013
Acquisition of KeyTech			32,903
Purchase of non-controlling interests			(7,045)
Purchase of treasury stock			(2,407)	(1,955)
Equity, end of period	805,431	757,883	805,431	757,883
Atlantic Tele-Network, Inc.
Stockholders' equity
Equity, beginning of period			680,299	677,222
Stock-based compensation			3,626	2,677
Comprehensive income:
Net income (loss)			3,034	6,181
Other comprehensive income
Foreign currency translation adjustment			(36)	28
Total comprehensive income			2,998	6,209
Issuance of common stock upon exercise of stock options			585	2,074
Dividends declared on common stock			(10,330)	(9,306)
Investments made by minority shareholders in consolidated affiliates			21,700
Purchase of non-controlling interests			(4,105)
Purchase of treasury stock			(2,407)	(1,955)
Equity, end of period	670,666	676,921	$ 670,666	676,921
Number of subsidiaries | subsidiary			1
Non-Controlling Interests
Stockholders' equity
Equity, beginning of period			$ 81,425	60,960
Comprehensive income:
Net income (loss)			5,877	8,345
Other comprehensive income
Total comprehensive income			5,877	8,345
Distributions to non-controlling interests			(4,404)	(9,261)
Investments made by minority shareholders in consolidated affiliates			21,904	905
Noncontrolling Interest, Increase from Sale of Parent Equity Interest				20,013
Sale of non-controlling interest				20,013
Acquisition of KeyTech			32,903
Purchase of non-controlling interests			(2,940)
Equity, end of period	$ 134,765	$ 80,962	$ 134,765	$ 80,962