Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Employee Stock Purchase Plan (Narrative) (Details)

v3.22.4
Stockholders' Equity - Employee Stock Purchase Plan (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
May 17, 2018
Dec. 29, 2022
Dec. 30, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares issued under employee stock plan (in shares)   62,274 46,273 56,389
Common Class A        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common stock, par value (in dollars per share)   $ 0.001 $ 0.001  
Employee Stock Purchase Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Fair market value measurement period (in months) 6 months      
Stock purchase plan, expense   $ 1.2 $ 1.0 $ 0.7
Employee Stock Purchase Plan | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Purchase price, as a percentage of fair market value 90.00%      
Employee Stock Purchase Plan | Common Class A        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares of stock authorized under the plan 1,500,000      
Common stock, par value (in dollars per share) $ 0.001