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Component of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Manufacturing equipment	$ 13,884	$ 11,484
Lab equipment	2,888	2,522
Computer equipment	5,255	5,009
Furniture and fixtures	2,510	1,934
Leasehold improvements	28,417	24,724
Assets in progress	1,024	4,336
Property, Plant and Equipment, Gross	53,978	50,009
Less accumulated depreciation and amortization	(23,411)	(17,987)
Total	$ 30,567	$ 32,022
Manufacturing Equipment | Minimum
Property Plant And Equipment [Line Items]
Estimated Useful Lives (In years)	5 years
Manufacturing Equipment | Maximum
Property Plant And Equipment [Line Items]
Estimated Useful Lives (In years)	14 years
Lab Equipment | Minimum
Property Plant And Equipment [Line Items]
Estimated Useful Lives (In years)	5 years
Lab Equipment | Maximum
Property Plant And Equipment [Line Items]
Estimated Useful Lives (In years)	13 years
Computer Equipment
Property Plant And Equipment [Line Items]
Estimated Useful Lives (In years)	3 years
Furniture and Fixtures | Minimum
Property Plant And Equipment [Line Items]
Estimated Useful Lives (In years)	3 years
Furniture and Fixtures | Maximum
Property Plant And Equipment [Line Items]
Estimated Useful Lives (In years)	13 years
Leasehold Improvements | Minimum
Property Plant And Equipment [Line Items]
Estimated Useful Lives (In years)	2 years
Leasehold Improvements | Maximum
Property Plant And Equipment [Line Items]
Estimated Useful Lives (In years)	12 years

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