Tower Sale and Leaseback (Balance Sheet Impact) (Details) - USD ($) $ in Thousands |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Tower Sale and Leaseback [Abstract] | ||
| Property and equipment, net | $ 19,094 | $ 18,792 |
| Tower obligations | $ 93,606 | $ 87,653 |
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- Definition Tower Sale and Leaseback [Abstract] No definition available.
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- Definition The liability due as of the balance sheet date for leasebacks accounted for using the deposit method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The net book value of the asset(s) sold in connection with the sale of the property to another party and lease back to the seller. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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