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Leases - Additional Information (Detail)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2020
USD ($)
ft²
Jun. 30, 2020
USD ($)
Feb. 29, 2020
USD ($)
ft²
Dec. 31, 2019
USD ($)
Jun. 30, 2019
USD ($)
Dec. 31, 2018
USD ($)
ft²
Lessee Lease Description [Line Items]            
Operating lease, description   The Company leases facilities and certain equipment under noncancelable operating leases with remaining lease terms of 1.5 year to 5.6 years, one of which includes an option to extend the lease for one five-year term.        
Operating lease, option to extend   true        
Operating lease, options to extend   one of which includes an option to extend the lease for one five-year term.        
Operating lease, renewal term   5 years        
Weighted average remaining lease term   4 years 9 months 18 days        
Weighted average discount rate   8.00%        
Restricted cash   $ 5,770   $ 4,787 $ 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]            
Office space leases in square feet | ft² 67,020   30,608     67,020
Minimum lease payment amount $ 51,400   $ 25,300     $ 50,400
Lease commencement period third quarter of 2020          
Minimum [Member]            
Lessee Lease Description [Line Items]            
Operating lease remaining lease term   1 year 6 months        
Maximum            
Lessee Lease Description [Line Items]            
Operating lease remaining lease term   5 years 7 months 6 days