Leases - Supplemental Balance Sheet Information Related to Finance Leases (Details) - USD ($) $ in Thousands	Apr. 03, 2020	Jan. 03, 2020
Lessee Lease Description [Line Items]
Finance lease right-of-use assets, gross	$ 1,451	$ 2,926
Less accumulated depreciation	734	1,059
Finance lease right-of-use assets, net	717	1,867
Total finance lease liability	$ 689	$ 926
Weighted-average remaining lease term (in years)	1 year 1 month 6 days	1 year 1 month 6 days
Weighted-average discount rate	6.02%	6.17%
Machinery and Equipment
Lessee Lease Description [Line Items]
Finance lease right-of-use assets, gross	$ 568	$ 1,885
Computer Equipment and Software
Lessee Lease Description [Line Items]
Finance lease right-of-use assets, gross	$ 883	912
Furniture and Fixtures
Lessee Lease Description [Line Items]
Finance lease right-of-use assets, gross		102
Leasehold Improvements
Lessee Lease Description [Line Items]
Finance lease right-of-use assets, gross		$ 27