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Summary of Significant Accounting Policies - Reconciliation of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Oct. 02, 2021 | Sep. 26, 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 | 12,884 | 1,067 |
Revenue recognized | (1,662) | (1,516) |
Deductions from reserves |  | (3) |
Balance, end of period | 12,449 | 1,358 |
Non-current portion of deferred revenue | 10,199 | 286 | $ 289
Current portion of deferred revenue | $ 2,250 | $ 1,072 | $ 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.

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