Leases - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 27,712	$ 32,315
Operating lease liabilities, net of current portion	$ 33,467	37,129
Noncancellable operating lease expiry year	2031
Noncancellable operating lease renewal option period	10 years
Noncancellable operating lease option to renewal description	Certain of the Company’s facility leases contain renewal options for periods of up to 10 years, at the Company’s election.
Noncancellable operating lease existence of option to extend	true
Noncancellable operating lease expense	$ 7,000	3,000	$ 1,900
Noncancellable lease, cash paid	3,000	$ 2,500
Noncancellable lease incentive receivable	$ 5,700
Noncancellable operating lease, weighted-average remaining lease term	9 years 2 months 12 days	9 years 10 months 24 days
Noncancellable operating lease, weighted-average discount rate	6.00%	5.99%
ASC-842
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 4,800
Operating lease liabilities, net of current portion	$ 5,200