Commitments and Contingencies (Narratives) (Details) - USD ($) |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Feb. 28, 2014 |
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| Operating Leases as Lessee | ||||
| Rental costs | $ 58,900,000 | $ 51,500,000 | $ 43,800,000 | |
| Capital Leases as Lessee | ||||
| Capital lease term | 14 years | |||
| Capital lease obligations | $ 98,600,000 | |||
| Self-Insurance | ||||
| Coverage limit per incident | 700,000 | |||
| Self insurance reserve | 4,000,000 | 4,100,000 | ||
| Workers compensation self insurance coverage limit per incident | 500,000 | |||
| Workers compensation self insurance reserve | 2,900,000 | 3,600,000 | ||
| Tribal Mobility Fund I Grant | ||||
| Grant proceeds | 1,527,000 | 14,007,000 | $ 1,136,000 | |
| FCC [Member] | ||||
| Tribal Mobility Fund I Grant | ||||
| Federal grant award | $ 41,400,000 | |||
| Grant proceeds | 0 | $ 13,800,000 | ||
| Grant awards | $ 27,600,000 | |||
| X | ||||||||||
- Definition Capital Lease, Term No definition available.
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- Definition Capital Lease Terms, Present Value at Inception No definition available.
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- Definition Contingent Gain [Abstract] No definition available.
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- Definition Total amount of federal grant awarded. No definition available.
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- Definition Federal Grant to be Received No definition available.
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- Definition Proceeds received during the period awarded to an entity to carry out a specific purpose as provided in grant agreements. Proceeds are repayable if certain conditions as outlined in the grant agreement are not met. No definition available.
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- Definition Self Insurance, Health Care, Coverage Floor Per Incident No definition available.
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| X | ||||||||||
- Definition Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, arising from healthcare related claims. No definition available.
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- Definition Workers Compensation, Coverage Floor Per Incident No definition available.
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- References No definition available.
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- References No definition available.
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- References No definition available.
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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