CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
REVENUE:
Total revenue	$ 104,475	$ 128,115
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Termination and access fees	25,914	33,003
Engineering and operations	18,152	19,683
Sales, marketing and customer service	8,562	9,035
General and administrative	25,540	24,356
Transaction-related charges	27	677
Depreciation and amortization	21,305	22,494
Loss on disposition of long-lived assets	284	1,111
Loss on damaged assets and other hurricane related charges, net of insurance recovery	482
Total operating expenses	100,266	110,359
Income from operations	4,209	17,756
OTHER INCOME (EXPENSE)
Interest income	366	286
Interest expense	(2,204)	(2,316)
Loss on deconsolidation of subsidiary		(529)
Other income (expense)	(753)	(485)
Other expense, net	(2,591)	(3,044)
INCOME BEFORE INCOME TAXES	1,618	14,712
Income tax provisions	3,921	3,128
NET INCOME (LOSS)	(2,303)	11,584
Net income attributable to non-controlling interests, net of tax expense of $0.3 million and $0.3 million, respectively.	(3,252)	(4,725)
NET INCOME (LOSS) ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS	$ (5,555)	$ 6,859
NET INCOME (LOSS) PER WEIGHTED AVERAGE SHARE ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS:
Basic (in dollars per share)	$ (0.35)	$ 0.42
Diluted (in dollars per share)	$ (0.35)	$ 0.42
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	16,019	16,157
Diluted (in shares)	16,019	16,246
DIVIDENDS PER SHARE APPLICABLE TO COMMON STOCK (in dollars per share)	$ 0.17	$ 0.34
Wireless
REVENUE:
Total revenue	$ 50,548	$ 58,925
Wireline
REVENUE:
Total revenue	48,096	64,159
Renewable Energy
REVENUE:
Total revenue	$ 5,831	$ 5,031