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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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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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