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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 6) | 12 Months Ended |  |  |  | 12 Months Ended |  | 12 Months Ended |  |  |  |  |  |
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Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Dec. 31, 2012 GYD | Dec. 31, 2011 GYD | Dec. 31, 2010 USD ($) | Dec. 31, 2010 GYD | Dec. 31, 2012 Island Wireless USD ($) | Dec. 31, 2011 Island Wireless USD ($) | Dec. 31, 2010 Island Wireless USD ($) | Dec. 31, 2011 Certain Island Wireless Reporting Unit USD ($) | Dec. 31, 2012 Recurring Quoted Prices in Active Markets (Level 1) USD ($) | Dec. 31, 2011 Recurring Quoted Prices in Active Markets (Level 1) USD ($) | Dec. 31, 2012 Recurring Significant Other Observable Inputs (Level 2) USD ($) | Dec. 31, 2011 Recurring Significant Other Observable Inputs (Level 2) USD ($) | Dec. 31, 2012 Recurring Total USD ($) | Dec. 31, 2011 Recurring Total USD ($)
Foreign Currency Gains and Losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of a Guyana dollar to one U.S. dollar |  |  | 205 | 205 |  | 205 |  |  |  |  |  |  |  |  |  |
Fair value of financial instruments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill impairment |  | $ 2,425,000 |  |  |  |  |  | $ 2,425,000 |  | $ 2,400,000 |  |  |  |  |  |
Goodwill | 45,077,000 | 45,077,000 |  |  | 44,397,000 |  | 5,438,000 | 5,438,000 | 4,758,000 | 0 |  |  |  |  |  |
Telecommunications license impairment | 3,400,000 |  |  |  |  |  | 3,400,000 |  |  |  |  |  |  |  |  |
Certificates of deposit |  |  |  |  |  |  |  |  |  |  |  |  | 363,000 | 3,366,000 | 363,000 | 3,366,000
Money market funds |  |  |  |  |  |  |  |  |  |  | 1,755,000 | 3,847,000 |  |  | 1,755,000 | 3,847,000
Total assets measured at fair value |  |  |  |  |  |  |  |  |  |  | 1,755,000 | 3,847,000 | 363,000 | 3,366,000 | 2,118,000 | 7,213,000
Interest rate derivative |  |  |  |  |  |  |  |  |  |  |  |  | 11,142,000 | 11,337,000 | 11,142,000 | 11,337,000
Total liabilities measured at fair value |  |  |  |  |  |  |  |  |  |  |  |  | $ 11,142,000 | $ 11,337,000 | $ 11,142,000 | $ 11,337,000

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