CONDENSED CONSOLIDATED INCOME STATEMENTS (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
REVENUE:
Total revenue	$ 175,072,000	$ 185,496,000	$ 347,940,000	$ 368,583,000
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Termination and access fees	32,857,000	38,994,000	67,093,000	79,536,000
Engineering and operations	21,781,000	22,469,000	43,932,000	44,434,000
Sales and marketing	28,612,000	31,026,000	58,114,000	63,031,000
Equipment expense	24,384,000	22,393,000	48,941,000	43,085,000
General and administrative	21,537,000	20,966,000	40,683,000	43,690,000
Transaction-related charges	310,000		1,092,000	5,000
Depreciation and amortization	25,454,000	26,582,000	51,255,000	53,606,000
Gain on disposition of long lived asset			(1,076,000)
Total operating expenses	154,935,000	162,430,000	310,034,000	327,387,000
Income from operations	20,137,000.00000	23,066,000.00000	37,906,000.00000	41,196,000.00000
OTHER INCOME (EXPENSE):
Interest expense	(2,814,000)	(3,998,000)	(5,174,000)	(7,968,000)
Interest income	85,000	94,000	172,000	186,000
Equity in earnings of an unconsolidated affiliate	394,000	930,000	976,000	2,331,000
Other income (expense), net	334,000	(346,000)	536,000	(282,000)
Other income (expense), net	(2,001,000)	(3,320,000)	(3,490,000)	(5,733,000)
INCOME BEFORE INCOME TAXES	18,136,000	19,746,000	34,416,000	35,463,000
Income tax expense	6,715,000	7,979,000	13,077,000	14,759,000
NET INCOME	11,421,000	11,767,000	21,339,000	20,704,000
Net income attributable to non-controlling interests, net of tax of $0.5 million for the three months ended June 30, 2012 and 2013, and $1.1 million and $1.2 million for the six months ended June 30, 2012 and 2013, respectively	(2,564,000)	(1,237,000)	(3,706,000)	(853,000)
NET INCOME ATTRIBUTABLE TO ATLANTIC TELE-NETWORK, INC. STOCKHOLDERS	8,857,000	10,530,000	17,633,000	19,851,000
NET INCOME PER WEIGHTED AVERAGE SHARE ATTRIBUTABLE TO ATLANTIC TELE-NETWORK, INC. STOCKHOLDERS
Basic (in dollars per share)	$ 0.56	$ 0.68	$ 1.13	$ 1.28
Diluted (in dollars per share)	$ 0.56	$ 0.67	$ 1.12	$ 1.27
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	15,706	15,535	15,647	15,495
Diluted (in shares)	15,821	15,609	15,756	15,581
DIVIDENDS PER SHARE APPLICABLE TO COMMON STOCK (in dollars per share)	$ 0.25	$ 0.23	$ 0.50	$ 0.46
U.S. wireless, Retail
REVENUE:
Total revenue	80,733,000	84,002,000	162,015,000	170,686,000
U.S. wireless, Wholesale
REVENUE:
Total revenue	42,030,000	51,553,000	82,332,000	98,937,000
International wireless
REVENUE:
Total revenue	21,837,000	20,271,000	43,267,000	39,171,000
Wireline
REVENUE:
Total revenue	20,877,000	21,074,000	41,441,000	42,804,000
Equipment and other
REVENUE:
Total revenue	$ 9,595,000	$ 8,596,000	$ 18,885,000	$ 16,985,000