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Note 4 - Property and Equipment - Property and Equipment (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Property, plant and equipment, gross | $ 64,985 | $ 37,373 |
Accumulated depreciation | 16,920 | 12,753 |
Property, plant and equipment, net | 48,065 | 24,620 | [1]
Computer Equipment [Member] |  |  |
Property, plant and equipment, gross | 13,566 | 12,312 |
Computer Software [Member] |  |  |
Property, plant and equipment, gross | 1,496 | 1,449 |
Furniture and Fixtures [Member] |  |  |
Property, plant and equipment, gross | 1,364 | 1,308 |
Vehicles and Tools [Member] |  |  |
Property, plant and equipment, gross | 2,323 | 1,306 |
Fiber Network [Member] |  |  |
Property, plant and equipment, gross | 30,215 | 14,053 |
Customer Equipment and Installations [Member] |  |  |
Property, plant and equipment, gross | 4,939 | 2,570 |
Land [Member] |  |  |
Property, plant and equipment, gross | 823 |  |
Asset under Construction [Member] |  |  |
Property, plant and equipment, gross | 10,030 | 4,204 |
Leasehold Improvements [Member] |  |  |
Property, plant and equipment, gross | $ 229 | $ 171 |
[1] | The Company has initially applied ASC 2014-09 (Topic 606) using the modified retrospective method. Under this method, the comparative information is not restated.

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