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Debt - Summary of Debt Outstanding (Details) - USD ($) $ in Thousands	Jan. 02, 2022	Jan. 03, 2021	Dec. 28, 2020	Sep. 29, 2020	Apr. 18, 2020
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ (4,624)	$ (4,995)
Total long-term debt, including current maturities	59,449	72,600
Less: Current portion of long-term debt	(1,021)	(2,772)
Long-term debt, excluding current portion and unamortized debt issuance costs	58,428	69,828
Revolver
Debt Instrument [Line Items]
Long-term debt	26,223	32,303
Unamortized debt issuance costs	(175)		$ (175)
Unamortized debt issuance costs	1,471	1,537
Financing (by VIE)
Debt Instrument [Line Items]
Unamortized debt issuance costs	(3,487)		$ (933)	$ (182)
Unamortized debt issuance costs	3,153	3,458
Paycheck Protection Program loan
Debt Instrument [Line Items]
Long-term debt	$ 0	$ 6,453			$ 6,453