CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, unless otherwise specified	Total	Total ATNI Stockholders' Equity	Common Stock	Treasury Stock, at cost	Additional Paid In Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Non-Controlling Interests
Balance at Dec. 31, 2010	$ 329,036	$ 283,768	$ 159	$ (4,724)	$ 113,002	$ 182,390	$ (7,059)	$ 45,268
Increase (Decrease) in Stockholders' Equity
Issuance of 303,536, 62,575 and 51,602 shares of common stock upon exercise of stock options for the years ended December 31, 2013, 2012 and 2011, respectively	1,175	1,175	1		1,174
Purchase of 163,222, 9,175 and 5,470 shares of common stock for the years ended December 31, 2013, 2012 and 2011, respectively	(218)	(218)		(218)
Stock-based compensation	3,249	3,249			3,249
Dividends declared on common stock	(16,670)	(13,857)				(13,857)		(2,813)
Non-controlling interest in equity acquired, net of tax of $2,280 for the year ended December 31, 2011 respectively	13,118	1,195			1,195			11,923
Investments made by minority shareholders	3,783							3,783
Comprehensive income:
Net income (loss)	21,897	21,794				21,794		103
Other comprehensive income, net of tax expense (benefit) of $2,316, $1,315 and ($1,327) for the years ended December 31, 2013, 2012 and 2011, respectively	(2,840)	(2,840)					(2,840)
Comprehensive income	19,057	18,954						103
Balance at Dec. 31, 2011	352,530	294,266	160	(4,942)	118,620	190,327	(9,899)	58,264
Increase (Decrease) in Stockholders' Equity
Issuance of 303,536, 62,575 and 51,602 shares of common stock upon exercise of stock options for the years ended December 31, 2013, 2012 and 2011, respectively	1,452	1,452			1,452
Purchase of 163,222, 9,175 and 5,470 shares of common stock for the years ended December 31, 2013, 2012 and 2011, respectively	(344)	(344)		(344)
Stock-based compensation	3,543	3,543			3,543
Dividends declared on common stock	(18,332)	(14,943)				(14,943)		(3,389)
Excess tax benefits from share-based compensation	(362)	(362)			(362)
Non-controlling interest in equity acquired	(77)							(77)
Investments made by minority shareholders	1,061							1,061
Comprehensive income:
Net income (loss)	53,167	48,932				48,932		4,235
Other comprehensive income, net of tax expense (benefit) of $2,316, $1,315 and ($1,327) for the years ended December 31, 2013, 2012 and 2011, respectively	1,602	1,602					1,602
Comprehensive income	54,769	50,534						4,235
Balance at Dec. 31, 2012	394,240	334,146	160	(5,286)	123,253	224,316	(8,297)	60,094
Increase (Decrease) in Stockholders' Equity
Issuance of 303,536, 62,575 and 51,602 shares of common stock upon exercise of stock options for the years ended December 31, 2013, 2012 and 2011, respectively	9,302	9,302	4		9,298
Purchase of 163,222, 9,175 and 5,470 shares of common stock for the years ended December 31, 2013, 2012 and 2011, respectively	(8,103)	(8,103)		(8,103)
Stock-based compensation	4,454	4,454			4,454
Dividends declared on common stock	(44,213)	(16,381)				(16,381)		(27,832)
Excess tax benefits from share-based compensation	2,101	2,101			2,101
Investments made by minority shareholders	407							407
Sale of non-controlling interest	(13,633)							(13,633)
Comprehensive income:
Net income (loss)	349,205	311,716				311,716		37,489
Other comprehensive income, net of tax expense (benefit) of $2,316, $1,315 and ($1,327) for the years ended December 31, 2013, 2012 and 2011, respectively	6,095	6,095					6,095
Comprehensive income	355,300	317,811						37,489
Balance at Dec. 31, 2013	$ 699,855	$ 643,330	$ 164	$ (13,389)	$ 139,106	$ 519,651	$ (2,202)	$ 56,525