Debt - Interest expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
0.625% Convertible Senior Notes (2025 Notes)
Debt
Effective interest rate	5.336%
Unamortized debt issuance costs	$ 0
Convertible Senior Notes
Interest expense related to the notes
Contractual interest expense	1,493	$ 3,346	$ 3,662
Amortization of debt discount			21,112
Amortization of debt issuance costs	960	2,003	1,655
Interest Expense, Total	$ 2,453	$ 5,349	$ 26,429