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Supplementary Balance Sheet Information | 9 Months Ended
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Sep. 28, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Supplementary Balance Sheet Information | 9. Supplementary Balance Sheet Information The following tables provide the details of selected balance sheet items as of the periods indicated (in thousands): Inventories
| September 28, |  |  | December 31, |
| 2018 |  |  | 2017 |
Raw materials | $ | 61,509 |  |  | $ | 57,277 |
Work-in-process |  | 16,369 |  |  |  | 14,847 |
Finished goods |  | 18,374 |  |  |  | 16,443 |
Demo and consigned inventory |  | 2,665 |  |  |  | 2,711 |
Total inventories | $ | 98,917 |  |  | $ | 91,278 |
Accrued Expenses and Other Current Liabilities
| September 28, |  |  | December 31, |
| 2018 |  |  | 2017 |
Accrued compensation and benefits | $ | 23,926 |  |  | $ | 17,348 |
Accrued warranty |  | 5,041 |  |  |  | 4,835 |
Customer deposits |  | 3,392 |  |  |  | 3,634 |
Other |  | 16,306 |  |  |  | 17,497 |
Total | $ | 48,665 |  |  | $ | 43,314 |
Accrued Warranty
| Nine Months Ended |
| September 28, 2018 |  |  | September 29, 2017 |
Balance at beginning of the period | $ | 4,835 |  |  | $ | 3,142 |
Provision charged to cost of revenue |  | 2,503 |  |  |  | 2,084 |
Warranty liabilities acquired from acquisitions |  | — |  |  |  | 1,307 |
Use of provision |  | (2,243 | ) |  |  | (1,818 | )
Foreign currency exchange rate changes |  | (54 | ) |  |  | 58 |
Balance at end of period | $ | 5,041 |  |  | $ | 4,773 |

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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