| Summary Of Property, Plant And Equipment [Table Text Block] |
NOTE 7. PROPERTY, PLANT AND EQUIPMENT | | | | | | | | | Property, plant and equipment is summarized as follows at December 31: | | | | | | | | | | | Lives (years) | | 2019 | | | 2018 | Land | - | $ | 2,651 | | $ | 2,714 | Buildings and improvements | 2-44 | | 38,924 | | | 38,013 | Central office equipment1 | 3-10 | | 96,061 | | | 95,173 | Cable, wiring and conduit | 15-50 | | 72,042 | | | 73,397 | Satellites | 14-17 | | 2,489 | | | 2,961 | Other equipment | 3-20 | | 94,951 | | | 93,782 | Software | 3-7 | | 22,244 | | | 19,124 | Under construction | - | | 4,176 | | | 5,526 | | | | 333,538 | | | 330,690 | Accumulated depreciation and amortization | | | 203,410 | | | 199,217 | Property, plant and equipment - net | | $ | 130,128 | | $ | 131,473 | 1 | Includes certain network software. |
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