CONDENSED CONSOLIDATED INCOME STATEMENTS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
REVENUE:
Total revenue	$ 185,293	$ 193,753	$ 368,183	$ 381,908
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Termination and access fees	38,951	54,539	79,434	106,313
Engineering and operations	21,945	21,897	43,281	43,802
Sales and marketing	31,203	36,079	63,377	67,908
Equipment expense	21,989	18,486	42,340	40,069
General and administrative	21,549	30,775	44,907	56,390
Acquisition-related charges		316	5	567
Depreciation and amortization	26,582	25,384	53,606	50,192
Total operating expenses	162,219	187,476	326,950	365,241
Income from operations	23,074	6,277	41,233	16,667
OTHER INCOME (EXPENSE):
Interest expense	(3,998)	(4,351)	(7,968)	(8,423)
Interest income	71	201	162	581
Equity in earnings of an unconsolidated affiliate	930	239	2,331	755
Other income (expense), net	(331)	4	(295)	599
Other income (expense), net	(3,328)	(3,907)	(5,770)	(6,488)
INCOME BEFORE INCOME TAXES	19,746	2,370	35,463	10,179
Income tax expense	7,979	1,052	14,759	4,882
NET INCOME	11,767	1,318	20,704	5,297
Net loss (income) attributable to non-controlling interests, net of tax of $0.4 million and $0.5 million for the three months ended June 30, 2011 and 2012, respectively, and $0.8 million and $1.1 million for the six months ended June 30, 2011 and 2012, respectively.	(1,237)	497	(853)	1,015
NET INCOME ATTRIBUTABLE TO ATLANTIC TELE-NETWORK, INC. STOCKHOLDERS	10,530	1,815	19,851	6,312
NET INCOME PER WEIGHTED AVERAGE SHARE ATTRIBUTABLE TO ATLANTIC TELE-NETWORK, INC. STOCKHOLDERS
Basic (in dollars per share)	$ 0.68	$ 0.12	$ 1.28	$ 0.41
Diluted (in dollars per share)	$ 0.67	$ 0.12	$ 1.27	$ 0.41
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	15,535	15,394	15,495	15,389
Diluted (in shares)	15,609	15,497	15,581	15,491
DIVIDENDS PER SHARE APPLICABLE TO COMMON STOCK (in dollars per share)	$ 0.23	$ 0.22	$ 0.46	$ 0.44
U.S. Wireless, Retail
REVENUE:
Total revenue	84,062	95,410	170,812	195,079
U.S. Wireless, Wholesale
REVENUE:
Total revenue	51,569	51,870	98,952	96,567
International Wireless
REVENUE:
Total revenue	20,315	18,434	39,270	32,497
Wireline
REVENUE:
Total revenue	20,889	20,886	42,437	41,557
Equipment and Other
REVENUE:
Total revenue	$ 8,458	$ 7,153	$ 16,712	$ 16,208