| Goodwill and Intangible Assets Goodwill and Intangibles Assets (Details 3) - USD ($) $ in Thousands | 6 Months Ended | |
|---|---|---|
| Jun. 30, 2016 | Dec. 31, 2015 | |
| Goodwill and Intangible Assets Disclosure [Abstract] | ||
| Finite-Lived Intangible Assets, Net | $ 56,175 | $ 48,155 | 
| Acquisition of wireless infrastructure access line business | 12,300 | |
| Other additions | 390 | |
| Amortization | $ 4,670 | 
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- Definition Purchases of intangible finite lived assets unrelated to acquisition No definition available. 
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination. No definition available. 
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- References No definition available. 
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