CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Redeemable Preferred Units	Redeemable Common Units	Total ATNI Stockholders' Equity	Common Stock	Treasury Stock, at cost	Additional Paid In Capital	Retained Earnings	Redeemable Common Units.	Accumulated Other Comprehensive Income/(Loss)	Non-Controlling Interests	Total
Balance, beginning of period at Dec. 31, 2020			$ 645,649	$ 172	$ (59,456)	$ 187,754	$ 516,901		$ 278	$ 108,687	$ 754,336
Increase (Decrease) in Stockholders' Equity
Purchase of shares of common stock			(3,932)		(3,932)						(3,932)
Stock-based compensation			3,413			3,413				98	3,511
Dividends declared on common stock			(5,416)				(5,416)			(2,488)	(7,904)
Repurchase of non-controlling interests			(2,161)			(2,161)				(10,208)	(12,369)
Investments made by minority shareholders in consolidated affiliates										329	329
Comprehensive income:
Net income (loss)			4,723				4,723			2,842	7,565
Other comprehensive income (loss)			(350)						(350)		(350)
Comprehensive income (loss)			4,373				4,723		(350)	2,842	7,215
Balance, end of period at Jun. 30, 2021			641,926	172	(63,388)	189,006	516,208		(72)	99,260	741,186
Balance, beginning of period at Mar. 31, 2021			642,591	172	(61,677)	186,930	516,897		269	99,678	742,269
Increase (Decrease) in Stockholders' Equity
Purchase of shares of common stock			(1,711)		(1,711)						(1,711)
Stock-based compensation			2,150			2,150				25	2,175
Dividends declared on common stock			(2,708)				(2,708)			(958)	(3,666)
Repurchase of non-controlling interests			(74)			(74)				(1,085)	(1,159)
Investments made by minority shareholders in consolidated affiliates										329	329
Comprehensive income:
Net income (loss)			2,019				2,019			1,271	3,290
Other comprehensive income (loss)			(341)						(341)		(341)
Comprehensive income (loss)			1,678				2,019		(341)	1,271	2,949
Balance, end of period at Jun. 30, 2021			641,926	172	(63,388)	189,006	516,208		(72)	99,260	741,186
Beginning balance at Dec. 31, 2021	$ 50,296	$ 22,640									72,936
Increase (decrease) in temporary equity
Accrued dividend - redeemable preferred units	2,270										2,270
Deemed dividend - redeemable common unit		1,678									1,678
Net income (loss)		(1,678)									(1,678)
Total comprehensive income (loss)		(1,678)									(1,678)
Ending balance at Jun. 30, 2022	52,566	22,640									75,206
Balance, beginning of period at Dec. 31, 2021			601,250	172	(71,714)	192,132	475,887		4,773	101,003	702,253
Increase (Decrease) in Stockholders' Equity
Purchase of shares of common stock			(2,114)		(2,114)						(2,114)
Stock-based compensation			3,743			3,743				285	4,028
Dividends declared on common stock			(5,356)				(5,356)			(1,374)	(6,730)
Accrued dividend			(2,270)				(2,270)				(2,270)
Repurchase of non-controlling interests			(443)			(443)				(4,057)	(4,500)
Deemed dividend							(1,678)	$ 1,678
Investments made by minority shareholders in consolidated affiliates										11	11
Comprehensive income:
Net income (loss)			(3,149)				(1,471)	(1,678)		(116)	(3,265)
Other comprehensive income (loss)			(542)						(542)		(542)
Comprehensive income (loss)			(3,691)				(1,471)	(1,678)	(542)	(116)	(3,807)
Balance, end of period at Jun. 30, 2022			591,119	172	(73,828)	195,432	465,112		4,231	95,752	686,871
Beginning balance at Mar. 31, 2022	51,412	22,640									74,052
Increase (decrease) in temporary equity
Accrued dividend - redeemable preferred units	1,154										1,154
Deemed dividend - redeemable common unit		587									587
Net income (loss)		(587)									(587)
Total comprehensive income (loss)		(587)									(587)
Ending balance at Jun. 30, 2022	$ 52,566	$ 22,640									75,206
Balance, beginning of period at Mar. 31, 2022			594,792	172	(73,795)	193,164	470,056		5,195	98,768	693,560
Increase (Decrease) in Stockholders' Equity
Purchase of shares of common stock			(33)		(33)						(33)
Stock-based compensation			2,435			2,435				133	2,568
Dividends declared on common stock			(2,678)				(2,678)			(1,113)	(3,791)
Accrued dividend			(1,154)				(1,154)				(1,154)
Repurchase of non-controlling interests			(167)			(167)				(1,850)	(2,017)
Deemed dividend							(587)	587
Investments made by minority shareholders in consolidated affiliates										11	11
Comprehensive income:
Net income (loss)			(1,112)				(525)	(587)		(197)	(1,309)
Other comprehensive income (loss)			(964)						(964)		(964)
Comprehensive income (loss)			(2,076)				(525)	$ (587)	(964)	(197)	(2,273)
Balance, end of period at Jun. 30, 2022			$ 591,119	$ 172	$ (73,828)	$ 195,432	$ 465,112		$ 4,231	$ 95,752	$ 686,871