Leases - Supplemental Cash Flow Information Related to Finance Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2020	Dec. 28, 2018	Dec. 29, 2017
Leases [Abstract]
Amortization of finance lease ROU asset	$ 584
Interest on finance lease liabilities	72
Cash paid for amounts included in the measurement of finance lease liabilities:
Operating cash flows	72
Financing cash flows	1,294	$ 1,907	$ 1,300
ROU assets obtained in exchange for new finance lease liabilities	$ 679	$ 1,656	$ 563