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Leases - Additional Information (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) Term | Sep. 30, 2020 USD ($) | Feb. 29, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2015
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Operating lease, expiration year |  | 2031-02 |  |  |  |  |
Operating lease, description |  | The Company leases facilities and certain equipment under noncancelable operating leases with remaining lease terms of 1.0 year to 10.4 years, some of which include options to extend the lease for up to two five-year terms. |  |  |  |  |
Operating lease, option to extend |  | true |  |  |  |  |
Operating lease, options to extend |  | some of which include options to extend the lease for up to two five-year terms. |  |  |  |  |
Weighted average remaining lease term |  | 9 years 4 months 24 days |  |  |  |  |
Weighted average discount rate |  | 4.70% |  |  |  |  |
Capitalization of right of use asset |  |  | $ 40,300 |  |  |  |
Capitalization of lease liability |  |  | $ 40,300 |  |  |  |
Restricted cash |  | $ 5,770 |  |  | $ 4,787 | $ 4,826 |
Corporate Office Space Lease Agreement |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Operating leases arrangement term |  |  |  | 10 years 7 months |  | 10 years 9 months |
Corporate Office Space Lease Agreement | Letter of Credit |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Restricted cash |  | $ 3,100 |  |  |  |  |
California | Corporate Office Space Lease Agreement |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Minimum lease payment amount | $ 51,400 |  |  | $ 25,300 |  | $ 50,400 |
Lease commencement period | first quarter of 2021 |  |  |  |  |  |
Minimum |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Operating lease remaining lease term |  | 1 year |  |  |  |  |
Maximum |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Operating lease remaining lease term |  | 10 years 4 months 24 days |  |  |  |  |
Operating lease, renewal term |  | 5 years |  |  |  |  |
Number of renewal option terms | Term |  | 2 |  |  |  |  |
Vehicles |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Operating leases arrangement term |  |  |  |  |  |  | 36 months
Vehicles | Minimum |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Operating leases arrangement term |  |  |  |  |  |  | 12 months
Vehicles | Maximum |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Operating leases arrangement term |  |  |  |  |  |  | 50 months

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