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EARNINGS PER SHARE AND REDEEMABLE NONCONTROLLING INTERESTS - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Jul. 22, 2021
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Reconciliation from basic to diluted weighted average common shares outstanding        
Redeemable noncontrolling interests   $ 74,052   $ 72,936
Redeemable Common Units        
Reconciliation from basic to diluted weighted average common shares outstanding        
Redeemable noncontrolling interests   22,640   22,640
Allocated losses   1,100    
Increased book value   1,100    
Redeemable Preferred Units        
Reconciliation from basic to diluted weighted average common shares outstanding        
Redeemable noncontrolling interests   51,412   $ 50,296
Unpaid dividend   3,100    
Alaska communications | Redeemable Common Units        
Reconciliation from basic to diluted weighted average common shares outstanding        
Redeemable noncontrolling interests $ 22,600 22,600    
Fair value of common units   22,600    
Alaska communications | Redeemable Preferred Units        
Reconciliation from basic to diluted weighted average common shares outstanding        
Redeemable noncontrolling interests $ 48,300 48,300    
Fair value of common units   $ 51,400    
Percentage of preferred dividend 9.00% 9.00%    
Stock options        
Reconciliation from basic to diluted weighted average common shares outstanding        
Stock options (in shares)   5,000 5,000