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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 28, 2019
Accounting Policies [Abstract] |
Reconciliation of Changes in Allowance for Doubtful Accounts | A reconciliation of the changes in our allowance for doubtful accounts balances for the years ended December 28, 2019 and December 29, 2018 are as follows (in thousands):
|  | Balance at |  |  |  |  |  |  |  |  |  |  | Balance |
|  | Beginning of |  |  |  |  |  |  |  |  |  |  | at End of |
Description |  | The period |  |  | Additions |  |  | (Deductions) |  |  | The period |
Allowance for doubtful accounts Years ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
December 28, 2019 |  |  | 213 |  |  |  | 25 |  |  |  | (51 | ) |  |  | 187 |
December 29, 2018 |  |  | 226 |  |  |  | 31 |  |  |  | (44 | ) |  |  | 213 |
Reconciliation of Changes in Deferred Revenue | A reconciliation of the changes in our deferred revenue balances for the years ended December 28, 2019 and December 29, 2018 are as follows (in thousands):
FY 2017: Balance as of December 30, 2017 |  | $ | 2,520 |
Additions to deferral |  |  | 1,984 |
Revenue recognized |  |  | (2,279 | )
FY 2018: Balance as of December 29, 2018 |  |  | 2,225 |
Additions to deferral |  |  | 2,164 |
Revenue recognized |  |  | (2,579 | )
FY 2019: Balance as of December 28, 2019 |  | $ | 1,810 |
Reconciliation of Changes in Warranty Liability | A reconciliation of the changes in our warranty liability for the years ended December 28, 2019 and December 29, 2018 are as follows (in thousands):
FY 2017: Balance as of December 30, 2017 |  | $ | 1,735 |
Accruals for product warranties |  |  | 454 |
Cost of warranty claims |  |  | (884 | )
Adjustment to pre-existing warranties |  |  | (445 | )
FY 2018: Balance as of December 29, 2018 |  |  | 860 |
Accruals for product warranties |  |  | 283 |
Cost of warranty claims |  |  | (296 | )
Adjustment to pre-existing warranties |  |  | (311 | )
FY 2019: Balance as of December 28, 2019 |  | $ | 536 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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