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GOODWILL AND INTANGIBLE ASSETS - Net (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Changes in the carrying amount of goodwill, by operating segment
Goodwill, Gross	$ 63,970	$ 63,970
Accumulated impairment	(3,279)	0
Goodwill, Total	60,691	63,970	$ 63,970
International Telecom
Changes in the carrying amount of goodwill, by operating segment
Goodwill, Gross	24,326	24,326
Accumulated impairment	0	0
Goodwill, Total	24,326	24,326	24,326
US Telecom
Changes in the carrying amount of goodwill, by operating segment
Goodwill, Gross	35,268	35,268
Accumulated impairment	0	0
Goodwill, Total	35,268	35,268	35,268
Renewable Energy
Changes in the carrying amount of goodwill, by operating segment
Goodwill, Gross	3,279	3,279
Accumulated impairment	(3,279)	0
Goodwill, Total	$ 0	$ 3,279	$ 3,279

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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