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			(2,221)		(2,221)						(2,221)
Stock-based compensation			1,262			1,262				74	1,336
Dividends declared on common stock			(2,710)				(2,710)				(2,710)
Distributions to non-controlling interests										(1,530)	(1,530)
Repurchase of non-controlling interests			(2,086)			(2,086)				(9,123)	(11,209)
Comprehensive income (loss):
Net income (loss)			2,706				2,706			1,570	4,276
Other comprehensive income (loss)			(9)						(9)		(9)
Comprehensive income (loss)			2,697				2,706		(9)	1,570	4,267
Balance, end of period at Mar. 31, 2021			642,591	172	(61,677)	186,930	516,897		269	99,678	742,269
Beginning balance at Dec. 31, 2021	$ 50,296	$ 22,640									72,936
Increase (decrease) in temporary equity
Accrued dividend - redeemable preferred units	1,116										1,116
Deemed dividend - redeemable common unit		1,092									1,092
Net income (loss)		(1,092)									(1,092)
Total comprehensive income		(1,092)									(1,092)
Ending balance at Mar. 31, 2022	$ 51,412	$ 22,640									74,052
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			(2,081)		(2,081)						(2,081)
Stock-based compensation			1,310			1,310				150	1,460
Dividends declared on common stock			(2,675)				(2,675)			(263)	(2,938)
Accrued dividend			(1,116)				(1,116)				(1,116)
Repurchase of non-controlling interests			(278)			(278)				(2,205)	(2,483)
Deemed dividend							(1,092)	$ 1,092
Comprehensive income (loss):
Net income (loss)			(2,040)				(948)	(1,092)		83	(1,957)
Other comprehensive income (loss)			422						422		422
Comprehensive income (loss)			(1,618)				(948)	$ (1,092)	422	83	(1,535)
Balance, end of period at Mar. 31, 2022			$ 594,792	$ 172	$ (73,795)	$ 193,164	$ 470,056		$ 5,195	$ 98,768	$ 693,560