Balance Sheet Information - Summary of Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Jul. 04, 2021	Jan. 03, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, net	$ 33,396	$ 29,995
Trade accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, net	17,197	21,357
Unbilled revenue (contract assets)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, net	15,969	8,147
Note receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, net	0	230
Employee note receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, net	223	222
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, net	$ 7	$ 39