Property, Plant, and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 45,572	$ 46,880
Less: accumulated depreciation	(7,247)	(7,326)
Property and equipment, net	38,325	39,554
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	35,951	37,130
Office furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,860	4,963
Computer hardware
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,362	3,365
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,352	1,350
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 47	$ 72

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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