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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.

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