Leases - Additional Information (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2019 ft²	Dec. 31, 2020 USD ($) ft²	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Operating Leased Assets [Line Items]
Area of interior floor space | ft²	30,000
Right-of-use asset and liability upon lease inception		$ 2,400
Cash paid for amounts included in the measurement of lease liabilities		6,010	$ 4,682	$ 0
Operating lease right-of-use assets		1,900	3,100
Lease expense for operating lease		5,600	5,300
Variable lease payments for operating lease		$ 700	$ 1,300
Operating leases, rent expense				$ 3,800
North Carolina
Operating Leased Assets [Line Items]
Area of interior floor space | ft²		61,000
California
Operating Leased Assets [Line Items]
Area of interior floor space | ft²		37,300
New Jersey
Operating Leased Assets [Line Items]
Area of interior floor space | ft²		34,000
Ireland
Operating Leased Assets [Line Items]
Area of interior floor space | ft²	30,000
Minimum
Operating Leased Assets [Line Items]
Remaining term of lease		1 year
Maximum
Operating Leased Assets [Line Items]
Remaining term of lease		17 years