Represents the discounted rate used to compute cash flows.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2017	Jun. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill
Goodwill impairment			$ 0
Impairment charges			$ 0	$ 0	$ 11,425
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Sovernet
Goodwill
Impairment of long-lived assets		$ 3,600			3,600
Goodwill impairment		7,500			7,500
Impairment charges		$ 11,100			$ 11,100
Discounted rate used for cash flows (as a percent)					14.00%
HURRICANES IRMA AND MARIA
Goodwill
Goodwill impairment	$ 0
Discounted rate used for cash flows (as a percent)	14.50%