Leases - Supplemental Lease Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Leases
Operating lease costs (ASC Topic 842)	$ 5,600	$ 5,800
Rent expense (ASC Topic 840)			$ 6,000
Balance Sheet Information
Operating lease right-of-use assets	28,213	16,086
Operating lease liabilities	29,900	17,894
Cash Flow Information
Cash paid for operating lease liabilities	5,942	6,023
Right-of-use assets obtained in exchange for operating lease obligations	$ 16,711	$ 2,631
Operating Lease Information
Weighted-average remaining lease term	6 years 6 months	4 years 6 months
Weighted-average discount rate	4.37%	5.26%