Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Property, plant and equipment, net
Property and equipment, gross	$ 15,012	$ 15,492
Less: accumulated depreciation	(11,981)	(11,376)
Property and equipment, net	3,031	4,116
Computer equipment and software
Property, plant and equipment, net
Property and equipment, gross	1,568	1,568
Furniture and fixtures
Property, plant and equipment, net
Property and equipment, gross	1,714	1,714
Leasehold improvements
Property, plant and equipment, net
Property and equipment, gross	4,985	4,984
Laboratory and production equipment
Property, plant and equipment, net
Property and equipment, gross	6,278	6,570
Construction in progress
Property, plant and equipment, net
Property and equipment, gross	$ 467	$ 656

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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