Leases - Lease Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Lease expenses included in income statement
Operating lease cost	$ 18,293	$ 17,803	$ 15,731
Short-term lease cost	442	908	511
Variable lease cost	5,273	6,155	4,461
Total lease cost	$ 24,008	$ 24,866	$ 20,703
Weighted average remaining lease term - operating leases (in years)	7 years 8 months 12 days	8 years 7 months 6 days	9 years 7 months 6 days
Weighted average discount rate - operating leases	3.60%	3.60%	3.70%