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Stock-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jan. 01, 2023
Jun. 16, 2021
Mar. 28, 2018
Mar. 27, 2018
Dec. 31, 2022
Dec. 31, 2021
Jan. 31, 2023
Nov. 05, 2020
Oct. 22, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Common stock shares issued         69,893,434 43,805,922      
Aggregate intrinsic value of options exercised         $ 1.0 $ 0.1      
Weighted average grant date fair value         $ 5.52 $ 5.93      
Common stock, Par value         $ 0.001 $ 0.001      
2020 Inducement Plan [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Shares available for issuance         677,995        
Shares reserved for future issuance               3,750,000 3,750,000
Stock Option [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized compensation cost         $ 47.5        
Unrecognized compensation expenses, recognition period         2 years 6 months 25 days        
2018 Stock Option and Incentive Plan [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of increases in authorized shares       700,180          
Percentage applied to the outstanding shares as annual increase in the number of shares authorized for issuance       4.00%          
Increased in authorized shares reserved for issuance   6,000,000              
Shares available for issuance         686,585        
2018 Stock Option and Incentive Plan [Member] | Subsequent Event [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Increased in authorized shares reserved for issuance 2,795,737                
2018 Stock Option and Incentive Plan [Member] | Employees and Non-employee Directors [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Option grants           3,402,768      
2018 Employee Stock Purchase Plan [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Increased in authorized shares reserved for issuance 125,000                
Shares available for issuance         404,268        
Shares reserved for future issuance     78,500            
2018 Employee Stock Purchase Plan [Member] | Maximum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of increases in authorized shares     125,000            
Percentage of shares of common stock available for issuance     1.00%            
2018 Employee Stock Purchase Plan [Member] | Employees [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Common stock shares issued             39,228