Summary of Significant Accounting Policies - Reconciliation of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2021	Mar. 28, 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	11,665	433
Revenue recognized	(427)	(535)
Deductions from reserves		(6)
Balance, end of period	12,465	1,702
Non-current portion of deferred revenue	10,653	320	$ 289
Current portion of deferred revenue	$ 1,812	$ 1,382	$ 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.