| **Segments (Tables)**                                                   | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
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| **Segment Reporting [Abstract]**                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Schedule of Segment Reporting Information, by Segment                   | Summarized financial information for our reportable segments for the three and six months endedJune 30, 2014 and 2013 follows (amounts in thousands): Three Months Ended Six Months Ended Wireless Wireline Total Reportable Segments Wireless Wireline Total Reportable SegmentsJune 30, 2014           Revenues$69,397 155,002 224,399 131,914 308,768 440,682Adjusted EBITDA$40,174 44,297 84,471 78,196 81,072 159,268            June 30, 2013           Revenues$35,559 154,102 189,661 69,396 306,481 375,877Adjusted EBITDA$14,273 47,866 62,139 29,462 91,326 120,788 |
| Reconciliation of Operating Profit (Loss) from Segments to Consolidated | A reconciliation of reportable segment Adjusted EBITDA to consolidated income before income taxes follows (amounts in thousands): Three Months Ended June 30, Six Months Ended June 30, 2014 2013 2014 2013Reportable segment Adjusted EBITDA$84,471 62,139 159,268 120,788Less depreciation and amortization  expense(43,786) (34,396) (86,138) (68,395)Less share-based compensation  expense(2,193) (1,647) (3,971) (2,906)Less accretion expense(301) (155) (602) (282)Other223 (246) 122 (450)Consolidated operating income38,414 25,695 68,679 48,755Less other expense(19,219) (17,474) (37,527) (34,378)Consolidated income before  income tax expense$19,195 8,221 31,152 14,377                                       |

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| - Definition
Tabular disclosure of  all significant reconciling items in the reconciliation of total profit or loss from reportable segments, to the entity's consolidated income before income taxes, extraordinary items, and discontinued operations.
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| - Definition
Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.
+ References
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