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FIXED ASSETS (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Fixed Assets |  |  |
Total plant in service | $ 561,125,000 | $ 520,486,000 |
Total property, plant, and equipment | 606,912,000 | 545,776,000 |
Less: Accumulated depreciation | (352,280,000) | (307,452,000) |
Net fixed assets | 254,632,000 | 238,324,000 |
Depreciation and amortization | 48,700,000 | 50,600,000 | 51,300,000
Capital expenditures offset by grants | 31,600,000 | 30,600,000 | 11,800,000
Minimum |  |  |
Fixed Assets |  |  |
Useful Life | 3 years |  |
Maximum |  |  |
Fixed Assets |  |  |
Useful Life | 39 years |  |
Telecommunications equipment and towers |  |  |
Fixed Assets |  |  |
Total plant in service | 471,265,000 | 442,010,000 |
Telecommunications equipment and towers | Minimum |  |  |
Fixed Assets |  |  |
Useful Life | 5 years | 5 years |
Telecommunications equipment and towers | Maximum |  |  |
Fixed Assets |  |  |
Useful Life | 15 years | 15 years |
Office and computer equipment |  |  |
Fixed Assets |  |  |
Total plant in service | 46,680,000 | 37,322,000 |
Office and computer equipment | Minimum |  |  |
Fixed Assets |  |  |
Useful Life | 3 years | 3 years |
Office and computer equipment | Maximum |  |  |
Fixed Assets |  |  |
Useful Life | 10 years | 10 years |
Buildings |  |  |
Fixed Assets |  |  |
Total plant in service | 18,002,000 | 17,600,000 |
Buildings | Minimum |  |  |
Fixed Assets |  |  |
Useful Life | 15 years | 15 years |
Buildings | Maximum |  |  |
Fixed Assets |  |  |
Useful Life | 39 years | 39 years |
Transportation vehicles |  |  |
Fixed Assets |  |  |
Total plant in service | 6,984,000 | 6,696,000 |
Transportation vehicles | Minimum |  |  |
Fixed Assets |  |  |
Useful Life | 3 years | 3 years |
Transportation vehicles | Maximum |  |  |
Fixed Assets |  |  |
Useful Life | 10 years | 10 years |
Leasehold improvements |  |  |
Fixed Assets |  |  |
Total plant in service | 11,380,000 | 10,671,000 |
Land |  |  |
Fixed Assets |  |  |
Total plant in service | 1,162,000 | 1,157,000 |
Furniture and fixtures |  |  |
Fixed Assets |  |  |
Total plant in service | 5,778,000 | 5,030,000 |
Furniture and fixtures | Minimum |  |  |
Fixed Assets |  |  |
Useful Life | 5 years | 5 years |
Furniture and fixtures | Maximum |  |  |
Fixed Assets |  |  |
Useful Life | 10 years | 10 years |
Construction in progress |  |  |
Fixed Assets |  |  |
Total property, plant, and equipment | $ 45,661,000 | $ 25,290,000 |

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