Stockholders’ Deficit - Schedule of Common Stock Reserved for Future Issuance (Details) - shares	6 Months Ended
Jun. 29, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares)	5,400,017	4,477,120
Shares available for grant/issuance (in shares)	7,521,095	8,230,500
Total common stock reserved for future issuance (in shares)	27,386,003	25,301,522
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issuable (in shares)	225,967	0
Vesting percentage	200.00%
Equity Incentive Compensation Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding (in shares)	8,145,833	5,888,077
2018 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant/issuance (in shares)	7,521,095	8,230,500
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant/issuance (in shares)	3,484,845	2,948,715
Employee Stock Purchase Plan \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issuable (in shares)	225,967
Vesting percentage	200.00%
Notes
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant/issuance (in shares)	8,234,230	8,234,230

Aggregate number of common shares reserved for future issuance.

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