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Warranties | 9 Months Ended
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Sep. 28, 2013
Product Warranties Disclosures [Abstract] |
Warranties | Warranties The Company sells the majority of its products with a 12 months repair or replacement warranty from the date of acceptance. The Company provides an accrual for estimated future warranty costs based upon the historical relationship of warranty costs to the cost of products sold. The estimated future warranty obligations related to product sales are recorded in the period in which the related revenue is recognized. The estimated future warranty obligations are affected by the warranty periods, sales volumes, product failure rates, material usage, and labor and replacement costs incurred in correcting a product failure. If actual product failure rates, material usage, labor or replacement costs were to differ from the Company’s estimates, revisions to the estimated warranty obligations would be required. The warranty accrual represents the best estimate of the amount necessary to settle future and existing claims on products sold as of the balance sheet date. The Company periodically assesses the adequacy of its reported warranty reserve and adjusts such amounts in accordance with changes in these factors. Components of the warranty accrual, which were included in the accompanying condensed consolidated balance sheets with other current liabilities, were as follows (in thousands):
| Three Months Ended |  | Nine Months Ended
| September 28, 2013 |  | September 29, 2012 |  | September 28, 2013 |  | September 29, 2012
Balance as of beginning of period | $ | 3,519 |  |  | $ | 4,943 |  |  | $ | 4,203 |  |  | $ | 4,797 |
Accruals for warranties issued during period | 801 |  |  | 881 |  |  | 1,924 |  |  | 3,545 |
Aggregate changes in liabilities related to preexisting warranties | 360 |  |  | 206 |  |  | 962 |  |  | 1,364 |
Settlements during the period | (1,278 | ) |  | (1,381 | ) |  | (3,687 | ) |  | (5,057 | )
Balance as of end of period | $ | 3,402 |  |  | $ | 4,649 |  |  | $ | 3,402 |  |  | $ | 4,649 |

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- Definition The entire disclosure for standard and extended product warranties and other product guarantee contracts, including a tabular reconciliation of the changes in the guarantor's aggregate product warranty liability for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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