CONDENSED CONSOLIDATED INCOME STATEMENTS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
REVENUE:
Total revenue	$ 182,890	$ 188,154
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Termination and access fees	40,483	51,774
Engineering and operations	21,336	21,905
Sales and marketing	32,175	31,830
Equipment expense	20,350	21,582
General and administrative	23,358	25,615
Acquisition-related charges	5	250
Depreciation and amortization	27,024	24,808
Total operating expenses	164,731	177,764
Income from operations	18,159	10,390
OTHER INCOME (EXPENSE):
Interest expense	(3,970)	(4,072)
Interest income	91	380
Equity in earnings of an unconsolidated affiliate	1,402	516
Other income, net	36	595
Other income (expense), net	(2,441)	(2,581)
INCOME BEFORE INCOME TAXES	15,718	7,809
Income tax expense	6,781	3,830
NET INCOME	8,937	3,979
Net loss attributable to non-controlling interests, net of tax of $0.4 million and $0.6 million, respectively	384	518
NET INCOME ATTRIBUTABLE TO ATLANTIC TELE-NETWORK, INC. STOCKHOLDERS	9,321	4,497
NET INCOME PER WEIGHTED AVERAGE SHARE ATTRIBUTABLE TO ATLANTIC TELE-NETWORK, INC. STOCKHOLDERS
Basic (in dollars per share)	$ 0.60	$ 0.29
Diluted (in dollars per share)	$ 0.60	$ 0.29
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	15,456	15,384
Diluted (in shares)	15,554	15,485
DIVIDENDS PER SHARE APPLICABLE TO COMMON STOCK (in dollars per share)	$ 0.23	$ 0.22
U.S. Wireless, Retail
REVENUE:
Total revenue	86,750	99,669
U.S. Wireless, Wholesale
REVENUE:
Total revenue	47,384	44,697
International Wireless
REVENUE:
Total revenue	18,955	14,063
Wireline
REVENUE:
Total revenue	21,548	20,670
Equipment and Other
REVENUE:
Total revenue	$ 8,253	$ 9,055