Property, plant and equipment, net - Summary of Property, Plant and Equipment Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 217,781	$ 213,891
Less accumulated depreciation and amortization	(58,961)	(51,060)
Property, plant and equipment, net	158,820	162,831
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	1,210	1,210
Building
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	88,942	15,745
Computer equipment and software
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	6,919	6,950
Office equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	7,335	7,665
Laboratory equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	67,313	55,521
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	31,259	34,286
Construction-in-progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 14,803	$ 92,514