Property and Equipment Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property and Equipment:
Property, Plant and Equipment, Gross	$ 158,017	$ 154,261
Less accumulated depreciation	(109,646)	(104,999)
Property, plant and equipment	48,371	49,262
Network equipment and computer hardware
Property and Equipment:
Property, Plant and Equipment, Gross	88,360	91,901
Leasehold improvements
Property and Equipment:
Property, Plant and Equipment, Gross	37,522	36,464
Customer premise equipment
Property and Equipment:
Property, Plant and Equipment, Gross	28,022	18,280
Furniture
Property and Equipment:
Property, Plant and Equipment, Gross	$ 4,113	$ 7,616

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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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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