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GOODWILL AND INTANGIBLE ASSETS - Change In Carrying Amount Of Telecommunications Licenses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Changes in the carrying amount of the company's telecommunications licenses, by operating segment      
Balance at the beginning of the period $ 113,698    
Balance at the end of the period $ 113,319 $ 113,698  
US Telecom      
Telecommunications licenses      
Weighted Average Cost Of Capital Rate 11.50%    
Telecommunications Licenses      
Changes in the carrying amount of the company's telecommunications licenses, by operating segment      
Balance at the beginning of the period $ 113,698 113,766  
Acquired licenses   1,068  
Dispositions (379) (1,136)  
Balance at the end of the period 113,319 113,698 $ 113,766
Gain of license dispositions 300   0
Telecommunications Licenses | International Telecom      
Changes in the carrying amount of the company's telecommunications licenses, by operating segment      
Balance at the beginning of the period 34,798 34,798  
Balance at the end of the period 34,798 34,798 34,798
Telecommunications Licenses | US Telecom      
Changes in the carrying amount of the company's telecommunications licenses, by operating segment      
Balance at the beginning of the period 78,900 78,968  
Acquired licenses   1,068  
Dispositions (379) (1,136)  
Balance at the end of the period $ 78,521 $ 78,900 $ 78,968