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Financial Statement Components | 3 Months Ended
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Apr. 01, 2017
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Financial Statement Components | Note 6. Financial Statement Components The following tables provide details of selected financial statement components as of the following dates (in thousands):
|  | At |
|  | April 1, 2017 |  |  | December 31, 2016 |
Inventories: |  |  |  |  |  |  |  |
Raw materials and sub-assemblies |  | $ | 23,185 |  |  | $ | 23,506 |
Work in process |  |  | 14,383 |  |  |  | 10,347 |
Finished goods |  |  | 3,976 |  |  |  | 4,984 |
Inventories |  |  | 41,544 |  |  |  | 38,837 |
Inventories-delivered systems |  |  | 3,280 |  |  |  | 2,457 |
Total inventories |  | $ | 44,824 |  |  | $ | 41,294 |
Property, plant and equipment, net:(1) |  |  |  |  |  |  |  |
Land |  | $ | 15,571 |  |  | $ | 15,568 |
Building and improvements |  |  | 20,566 |  |  |  | 20,532 |
Machinery and equipment |  |  | 37,122 |  |  |  | 35,659 |
Furniture and fixtures |  |  | 2,419 |  |  |  | 2,282 |
Software |  |  | 9,776 |  |  |  | 9,756 |
Capital in progress |  |  | 2,036 |  |  |  | 2,748 |
Total property, plant and equipment, gross |  |  | 87,490 |  |  |  | 86,545 |
Accumulated depreciation and amortization |  |  | (44,314 | ) |  |  | (42,319 | )
Total property, plant and equipment, net |  | $ | 43,176 |  |  | $ | 44,226 |
(1) Total depreciation and amortization expense was $1.8 million and $1.7 million for the three months ended April 1, 2017 and March 26, 2016, respectively. |
Other Current Liabilities: |  |  |  |  |  |  |  |
Accrued warranty |  | $ | 4,244 |  |  | $ | 3,838 |
Customer deposits |  |  | — |  |  |  | 581 |
Retrofit liability |  |  | 984 |  |  |  | 432 |
Accrued professional services |  |  | 570 |  |  |  | 424 |
Accrued royalties |  |  | 60 |  |  |  | 1,233 |
Other |  |  | 1,435 |  |  |  | 1,539 |
Total other current liabilities |  | $ | 7,293 |  |  | $ | 8,047 |
Components of Accumulated Other Comprehensive Income (Loss)
|  | Years Ended |
|  | Foreign Currency Translations |  |  | Defined Benefit Pension Plans |  |  | Unrealized Income (Loss) on Investment |  |  | Accumulated Other Comprehensive Income |
Balance as of December 31, 2016 |  | $ | (5,817 | ) |  | $ | (227 | ) |  | $ | (2 | ) |  | $ | (6,046 | )
Current period change |  |  | 1,945 |  |  |  | — |  |  |  | (9 | ) |  |  | 1,936 |
Balance as of April 1, 2017 |  | $ | (3,872 | ) |  | $ | (227 | ) |  | $ | (11 | ) |  | $ | (4,110 | )
The items above, except for unrealized income (loss) on investment, did not impact the Company’s income tax provision. The amounts reclassified from each component of accumulated other comprehensive income into income statement line items were insignificant.

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