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Intangible Assets (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2012
Licenses |
Licenses |
Licenses |  |  |  |  |
|  |  | September 30, |  | September 30,
|  |  | 2012 |  | 2011
(Dollars in thousands) |  |  |  |  |
Balance, beginning of period | $ | 1,470,769 |  | $ | 1,452,101
| Acquisitions |  | 57,957 |  |  | 4,406
| Exchanges |  | - |  |  | 11,842
| Other |  | 3,147 |  |  | 2,201
Balance, end of period | $ | 1,531,873 |  | $ | 1,470,550

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