CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
REVENUE:
Total revenue	$ 115,616	$ 121,138	$ 326,637	$ 343,401
OPERATING EXPENSES (excluding depreciation and amortization unless otherwise indicated):
Termination and access fees	27,622	29,866	83,440	84,037
Engineering and operations	20,095	18,177	58,234	54,738
Sales, marketing and customer service	9,785	8,995	29,048	25,969
General and administrative	25,110	25,210	75,518	77,470
Transaction-related charges	21	178	89	642
Depreciation and amortization	22,603	21,384	64,870	64,602
(Gain) Loss on disposition of long-lived assets	132	(13,496)	321	(15,509)
Loss on damaged assets and other hurricane related charges, net of insurance recovery				666
Total operating expenses	105,368	90,314	311,520	292,615
Income from operations	10,248	30,824	15,117	50,786
OTHER INCOME (EXPENSE)
Interest income	414	568	1,860	1,420
Interest expense	(1,298)	(2,229)	(3,843)	(6,759)
Other expenses	(2,686)	(1,244)	(2,755)	(3,042)
Other income (expense), net	(3,570)	(2,905)	(4,738)	(8,381)
INCOME BEFORE INCOME TAXES	6,678	27,919	10,379	42,405
Income tax provisions	1,834	7,010	2,774	13,018
NET INCOME	4,844	20,909	7,605	29,387
Net income attributable to non-controlling interests, net of tax expense of $0.4 million, $0.5 million, $1.2 million and $1.1 million, respectively.	(3,459)	(3,887)	(8,657)	(10,705)
NET INCOME (LOSS) ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS	$ 1,385	$ 17,022	$ (1,052)	$ 18,682
NET INCOME (LOSS) PER WEIGHTED AVERAGE SHARE ATTRIBUTABLE TO ATN INTERNATIONAL, INC. STOCKHOLDERS:
Basic (in dollars per share)	$ 0.09	$ 1.07	$ (0.07)	$ 1.17
Diluted (in dollars per share)	$ 0.09	$ 1.06	$ (0.07)	$ 1.16
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	16,000	15,958	15,984	15,987
Diluted (in shares)	16,007	16,021	15,984	16,042
DIVIDENDS PER SHARE APPLICABLE TO COMMON STOCK (in dollars per share)	$ 0.17	$ 0.17	$ 0.51	$ 0.51
Wireless
REVENUE:
Total revenue	$ 54,555	$ 52,003	$ 143,705	$ 153,046
Wireline
REVENUE:
Total revenue	59,623	63,717	178,555	173,083
Renewable Energy
REVENUE:
Total revenue	$ 1,438	$ 5,418	$ 4,377	$ 17,272