Quarterly report pursuant to Section 13 or 15(d)

Leases - Additional Information (Detail)

v3.21.1
Leases - Additional Information (Detail)
$ in Thousands
1 Months Ended
Jan. 31, 2019
USD ($)
ft²
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Lessee Lease Description [Line Items]      
Operating lease right-of-use-asset   $ 10,625 $ 11,104
Operating lease, lease liability   13,972  
Texas      
Lessee Lease Description [Line Items]      
Area of administrative office and research and development space leased | ft² 57,000    
Lease expiration period 2028-08    
Operating lease right-of-use-asset $ 7,200    
Operating lease, lease liability 7,200    
Letter of credit $ 3,000    
Asset retirement obligation, lease   $ 500  
Minimum      
Lessee Lease Description [Line Items]      
Lessee, operating leases remaining lease term.   2 years  
Lessee, operating leases renewal lease term   3 years  
Maximum      
Lessee Lease Description [Line Items]      
Lessee, operating leases remaining lease term.   8 years  
Lessee, operating leases renewal lease term   5 years