Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Operating Leases - Additional Information (Details)

v3.21.1
Commitments and Contingencies - Operating Leases - Additional Information (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Jan. 08, 2019
ft²
Mar. 31, 2021
USD ($)
Dec. 31, 2019
Dec. 31, 2020
USD ($)
Lessee Lease Description [Line Items]        
Operating lease, right-of-use asset   $ 14,662   $ 14,831
Operating lease liability, short term   1,525   1,463
Operating lease liability, long-term   24,167   $ 24,578
Accounting Standards Update 2016-02        
Lessee Lease Description [Line Items]        
Operating lease, right-of-use asset   15,800    
Operating lease liability, long-term   15,800    
Net of tenant allowances expected to be received   $ 9,300    
Lease operating, discounted borrowing rate   9.30%    
Lease practical expedient     true  
Operating Lease, January 2019        
Lessee Lease Description [Line Items]        
Area of office and laboratory space leased | ft² 52,859      
Term of option to extend the lease   10 years    
Letter of credit outstanding   $ 3,100    
Operating Lease, January 2019 | Accounting Standards Update 2016-02        
Lessee Lease Description [Line Items]        
Operating lease liability, short term   1,500    
Operating lease liability, long-term   $ 24,200