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GOODWILL AND INTANGIBLE ASSETS (Details 2) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2012
Island Wireless
Dec. 31, 2012
Telecommunications Licenses
Dec. 31, 2011
Telecommunications Licenses
Dec. 31, 2012
Telecommunications Licenses
U.S. Wireless
Dec. 31, 2011
Telecommunications Licenses
U.S. Wireless
Dec. 31, 2012
Telecommunications Licenses
U.S. Wireline
Dec. 31, 2011
Telecommunications Licenses
U.S. Wireline
Dec. 31, 2010
Telecommunications Licenses
U.S. Wireline
Dec. 31, 2012
Telecommunications Licenses
Island Wireless
Dec. 31, 2011
Telecommunications Licenses
Island Wireless
Changes in the carrying amount of the company's telecommunications licenses, by operating segment                      
Balance at the beginning of the period $ 87,468   $ 87,468 $ 80,843 $ 64,319 $ 63,794 $ 31 $ 31 $ 31 $ 23,118 $ 17,018
Acquired licenses     6,340 6,625 6,340 525         6,100
Impairment charge (3,400) (3,400) (3,350)             (3,350)  
Balance at the end of the period $ 90,458   $ 90,458 $ 87,468 $ 70,659 $ 64,319 $ 31 $ 31 $ 31 $ 19,768 $ 23,118