Property and Equipment - Tabular Disclosure (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Property and equipment
Property and equipment, at cost	$ 107,746	$ 76,195
Less accumulated depreciation	(17,236)	(13,627)
Property and equipment, net	90,510	62,568
Laboratory Equipment
Property and equipment
Property and equipment, at cost	17,986	15,596
Leasehold Improvements
Property and equipment
Property and equipment, at cost	16,272	15,298
Manufacturing Equipment
Property and equipment
Property and equipment, at cost	15,534	15,737
Office Equipment
Property and equipment
Property and equipment, at cost	1,718	1,597
Electronic Equipment
Property and equipment
Property and equipment, at cost	1,260	1,244
Computer Software
Property and equipment
Property and equipment, at cost	1,238	598
Construction in Progress
Property and equipment
Property and equipment, at cost	$ 53,738	$ 26,125

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.

+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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