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Other Financial Information - Property and equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 3,598	$ 3,385
Less: accumulated depreciation and amortization	(2,284)	(1,819)
Property and equipment, net	1,314	1,566
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	25	25
Laboratory equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	2,228	1,855
Computer equipment and software
Property, Plant and Equipment [Line Items]
Total property and equipment	851	796
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	423	399
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 71	$ 310

X

- Definition

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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