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Financial Statement Components (Tables) | 12 Months Ended
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Dec. 30, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Selected financial statement components | The following tables provide details of selected financial statement components as of the following dates (in thousands):
|  | At |
|  | December 30, 2017 |  |  | December 31, 2016 |
Inventories: |  |  |  |  |  |  |  |
Raw materials and sub-assemblies |  | $ | 32,187 |  |  | $ | 23,506 |
Work in process |  |  | 13,498 |  |  |  | 10,347 |
Finished goods |  |  | 7,175 |  |  |  | 4,984 |
Inventories |  |  | 52,860 |  |  |  | 38,837 |
Inventories-delivered systems |  |  | 1,534 |  |  |  | 2,457 |
Total inventories |  | $ | 54,394 |  |  | $ | 41,294 |
Property, plant and equipment, net:(1) |  |  |  |  |  |  |  |
Land |  | $ | 15,573 |  |  | $ | 15,568 |
Building and improvements |  |  | 20,880 |  |  |  | 20,532 |
Machinery and equipment |  |  | 36,380 |  |  |  | 35,659 |
Furniture and fixtures |  |  | 2,420 |  |  |  | 2,282 |
Software |  |  | 9,558 |  |  |  | 9,756 |
Capital in progress |  |  | 4,418 |  |  |  | 2,748 |
Total property, plant and equipment, gross |  |  | 89,229 |  |  |  | 86,545 |
Accumulated depreciation and amortization |  |  | (44,419 | ) |  |  | (42,319 | )
Total property, plant and equipment, net |  | $ | 44,810 |  |  | $ | 44,226 |
(1) Total depreciation and amortization expense for the years ended December 30, 2017, December 31, 2016 and December 26, 2015 was $6.7 million, $6.8 million, and $6.9 million, respectively. |
Other Current Liabilities: |  |  |  |  |  |  |  |
Accrued warranty |  | $ | 4,863 |  |  | $ | 3,838 |
Accrued taxes |  |  | 813 |  |  |  | 706 |
Customer deposits |  |  | — |  |  |  | 581 |
Accrued professional services |  |  | 534 |  |  |  | 424 |
Accrued royalties |  |  | — |  |  |  | 1,233 |
Other |  |  | 1,039 |  |  |  | 1,265 |
Total other current liabilities |  | $ | 7,249 |  |  | $ | 8,047 |
Components of accumulated other comprehensive income (loss) | Components of Accumulated Other Comprehensive Income (Loss)
|  | Foreign Currency Translations |  |  | Defined Benefit Pension Plans |  |  | Unrealized Income (Loss) on Investment |  |  | Accumulated Other Comprehensive Income |
Balance as of December 26, 2015 |  | $ | (4,948 | ) |  | $ | (210 | ) |  | $ | (44 | ) |  | $ | (5,202 | )
Current period change |  |  | (869 | ) |  |  | (17 | ) |  |  | 42 |  |  |  | (844 | )
Balance as of December 31, 2016 |  |  | (5,817 | ) |  |  | (227 | ) |  |  | (2 | ) |  |  | (6,046 | )
Current period change |  |  | 4,170 |  |  |  | (160 | ) |  |  | (88 | ) |  |  | 3,922 |
Balance as of December 30, 2017 |  | $ | (1,647 | ) |  | $ | (387 | ) |  | $ | (90 | ) |  | $ | (2,124 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations. + References No definition available. + Details
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