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PENDING SALE OF U.S. RETAIL WIRELESS BUSINESS (Details) (USD $) | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 Alltel Sale AT&T | Jun. 30, 2013 Alltel Sale AT&T | Jan. 21, 2013 Alltel Sale AT&T
Pending Sale Of U.S. Retail Wireless Business |  |  |  |  |  |  |
Consideration for sale of operations in all-cash transaction |  |  |  |  |  |  | $ 780,000,000
Consolidated revenues | 175,072,000 | 185,496,000 | 347,940,000 | 368,583,000 | 103,400,000 | 211,500,000 |
Percentage of consolidated revenues |  |  |  |  | 59.00% | 61.00% |
Consolidated operating income | $ 20,137,000 | $ 23,066,000 | $ 37,906,000 | $ 41,196,000 | $ 3,800,000 | $ 9,100,000 |
Percentage of consolidated operating income |  |  |  |  | 19.00% | 24.00% |

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