v3.10.0.1

Property and equipment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Property and equipment |  |  |
Total property and equipment | $ 583,067 | $ 502,646 |
Less: accumulated depreciation and amortization | (268,888) | (240,287) |
Total property and equipment, net | 314,179 | 262,359 |
Depreciation and amortization expense |  |  |
Total depreciation and amortization of property and equipment | 78,837 | 69,097 | $ 49,202
Asset impairment charge |  |  |
Losses on disposals of property and equipment | 90 | 276 |
Construction in progress projects |  |  |
Asset impairment charge |  |  |
Impairment losses | 148 | 882 | 54
Network access |  |  |
Depreciation and amortization expense |  |  |
Total depreciation and amortization of property and equipment | 49,766 | 42,435 | 27,013
Network operations |  |  |
Depreciation and amortization expense |  |  |
Total depreciation and amortization of property and equipment | 17,590 | 16,382 | 13,966
Development and technology |  |  |
Depreciation and amortization expense |  |  |
Total depreciation and amortization of property and equipment | 10,443 | 9,247 | 7,207
General and administrative |  |  |
Depreciation and amortization expense |  |  |
Total depreciation and amortization of property and equipment | 1,038 | 1,033 | $ 1,016
Leasehold improvements |  |  |
Property and equipment |  |  |
Total property and equipment | 474,808 | 418,023 |
Software |  |  |
Property and equipment |  |  |
Total property and equipment | 51,534 | 42,281 |
Construction in progress |  |  |
Property and equipment |  |  |
Total property and equipment | 40,369 | 27,291 |
Computer equipment |  |  |
Property and equipment |  |  |
Total property and equipment | 14,215 | 13,245 |
Furniture, fixtures and office equipment |  |  |
Property and equipment |  |  |
Total property and equipment | 2,141 | 1,806 |
Equipment acquired under capital leases |  |  |
Property and equipment |  |  |
Total property and equipment | 16,284 | 12,714 |
Less: accumulated depreciation and amortization | $ (6,245) | $ (3,744) |

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