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GOVERNMENT GRANTS (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2017 USD ($)
Letter of credit sub-facility |
MOBILITY FUND GRANTS |
Letters of credit posted to USAC | $ 1.2
Mobility Funds |
MOBILITY FUND GRANTS |
Mobility Funds received | $ 21.1
Period over which a portion of the Mobility Funds is used to offset the costs of supporting the networks | 5 years
Mobility Funds | U.S. Telecom |
MOBILITY FUND GRANTS |
Mobility Funds received | $ 21.1
Grant funds used to offset operating expenses | 13.9
Mobility funds received and recorded to date | 7.5
Mobility Funds | U.S. Telecom | Property, Plant and Equipment |
MOBILITY FUND GRANTS |
Grant funds used to offset fixed asset related costs | 7.2
Mobility Funds | U.S. Telecom | Other current liabilities |
MOBILITY FUND GRANTS |
Grant funds used to offset operating expenses | 5.9
Mobility Funds | U.S. Telecom | Other long-term liabilities |
MOBILITY FUND GRANTS |
Grant funds used to offset operating expenses | $ 0.5

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