v3.26.1
Stockholders' Equity (Deficit) - Stock Option Activity (Details) - Stock options - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 28, 2026
Jun. 29, 2025
Jun. 28, 2026
Jun. 29, 2025
Dec. 28, 2025
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding          
Beginning balance     10,760    
Ending balance 10,760   10,760   10,760
Exercisable 10,760   10,760    
Vested and expected to vest 10,760   10,760    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price          
Weighted-average exercise price per option, beginning balance (in dollars per share)     $ 170.25    
Weighted-average exercise price per option, ending balance (in dollars per share) $ 170.25   170.25   $ 170.25
Weighted-average exercise price per option, exercisable (in dollars per share) 170.25   170.25    
Weighted-average exercise price per option, vested and expected to vest (in dollars per share) $ 170.25   $ 170.25    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures          
Weighted-average remaining contractual life (years)     5 years 14 days   5 years 3 months 14 days
Weighted-average remaining contractual life (years), exercisable     5 years 14 days    
Weighted-average remaining contractual life (years), vested and expected to vest     5 years 14 days    
Equity-based compensation expense $ 0 $ 0 $ 0 $ 0