Summary of Significant Accounting Policies - Reconciliation of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jan. 02, 2021	[1]
Reconciliation of the changes in the Company's deferred revenue balance
Balance, beginning of period	$ 1,227	$ 1,810
Additions to deferral	12,279	743
Revenue recognized	(1,022)	(1,023)
Deductions from reserves		(6)
Balance, end of period	12,484	1,524
Non-current portion of deferred revenue	10,479	302	$ 289
Current portion of deferred revenue	$ 2,005	$ 1,222	$ 938

[1] Derived from the audited consolidated financial statements included in the Annual Report on Form 10-K filed with the SEC for the year ended January 2, 2021.