Property and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 172,714	$ 169,961
Accumulated depreciation and amortization	(119,717)	(115,715)
Total property and equipment, net	52,997	54,246
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	90,128	88,569
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,828	7,925
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19,767	18,979
Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	48,885	48,309
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 6,106	$ 6,179

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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