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Derivative Instruments (Tables) | 9 Months Ended
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Oct. 01, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Outstanding Forward Contracts Table | The Company had the following outstanding forward contracts (in thousands):
| October 1, 2017 |  | December 31, 2016
Currency | Notional Value |  | USD Equivalent |  | Notional Value |  | USD Equivalent
Derivatives Designated as Hedging Instruments: |  |  |  |  |  |  |
Japanese Yen | — |  |  | $ | — |  |  | 342,500 |  |  | $ | 2,960 |
Hungarian Forint | — |  |  | — |  |  | 39,000 |  |  | 130 |
Singapore Dollar | — |  |  | — |  |  | 150 |  |  | 97 |
Derivatives Not Designated as Hedging Instruments: |  |  |  |
Japanese Yen | 500,000 |  |  | $ | 4,440 |  |  | 650,000 |  |  | $ | 5,554 |
British Pound | 1,720 |  |  | 2,294 |  |  | 1,350 |  |  | 1,658 |
Hungarian Forint | 530,000 |  |  | 2,014 |  |  | 425,000 |  |  | 1,448 |
Korean Won | 1,325,000 |  |  | 1,154 |  |  | 1,750,000 |  |  | 1,450 |
Singapore Dollar | — |  |  | — |  |  | 1,350 |  |  | 929 |
Taiwanese Dollar | 34,640 |  |  | 1,139 |  |  | 26,000 |  |  | 802 |
Swiss Franc | 1,025 |  |  | 1,059 |  |  | — |  |  | — |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value | Information regarding the fair value of the outstanding forward contracts was as follows (in thousands):
| Asset Derivatives |  | Liability Derivatives
| Balance |  | Fair Value |  | Balance |  | Fair Value
| Sheet Location |  | October 1, 2017 |  | December 31, 2016 |  | Sheet Location |  | October 1, 2017 |  | December 31, 2016
Derivatives Designated as Hedging Instruments: |  |  |  |  |  |
Cash flow hedge forward contracts | Prepaid expenses and other current assets |  | $ | — |  |  | $ | 43 |  |  | Accrued expenses |  | $ | — |  |  | $ | — |
Derivatives Not Designated as Hedging Instruments: |  |  |  |  |  |
Economic hedge forward contracts | Prepaid expenses and other current assets |  | $ | 13 |  |  | $ | 1 |  |  | Accrued expenses |  | $ | 13 |  |  | $ | 11 |
Offsetting Assets | The following table presents the gross activity for all derivative assets and liabilities which were presented on a net basis on the Consolidated Balance Sheets due to the right of offset with each counterparty (in thousands):
Asset Derivatives |  | Liability Derivatives
|  | October 1, 2017 |  | December 31, 2016 |  |  |  | October 1, 2017 |  | December 31, 2016
Gross amounts of recognized assets |  | $ | 13 |  |  | $ | 117 |  |  | Gross amounts of recognized liabilities |  | $ | 13 |  |  | $ | 11 |
Gross amounts offset |  | — |  |  | (73 | ) |  | Gross amounts offset |  | — |  |  | — |
Net amount of assets presented |  | $ | 13 |  |  | $ | 44 |  |  | Net amount of liabilities presented |  | $ | 13 |  |  | $ | 11 |
Derivative Instruments, Gain (Loss) | Information regarding the effect of derivative instruments on the consolidated financial statements was as follows (in thousands):
| Location in Financial Statements |  | Three-months Ended |  | Nine-months Ended
|  | October 1, 2017 |  | October 2, 2016 |  | October 1, 2017 |  | October 2, 2016
Derivatives Designated as Hedging Instruments: |  |  |
Gains (losses) recorded in shareholders' equity (effective portion) | Accumulated other comprehensive income (loss), net of tax |  | $ | — |  |  | $ | (332 | ) |  | $ | — |  |  | $ | (332 | )
Gains (losses) reclassified from accumulated other comprehensive income (loss) into current operations (effective portion) | Revenue |  | $ | 56 |  |  | $ | (250 | ) |  | $ | 10 |  |  | $ | (453 | )
| Research, development, and engineering expenses |  | — |  |  | 1 |  |  | 3 |  |  | 5 |
| Selling, general, and administrative expenses |  | — |  |  | 8 |  |  | 8 |  |  | 21 |
| Total gains (losses) reclassified from accumulated other comprehensive income (loss) into current operations |  | $ | 56 |  |  | $ | (241 | ) |  | $ | 21 |  |  | $ | (427 | )
Derivatives Not Designated as Hedging Instruments: |  |  |
Gains (losses) recognized in current operations | Foreign currency gain (loss) |  | $ | 43 |  |  | $ | (24 | ) |  | $ | 139 |  |  | $ | (1,089 | )
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) | The following table provides the changes in accumulated other comprehensive income (loss), net of tax, related to derivative instruments (in thousands):
Balance as of December 31, 2016 |  | $ | 37 |
Net unrealized loss on cash flow hedges |  | (16 | )
Reclassification of net realized gain on cash flow hedges into current operations |  | (21 | )
Balance as of October 1, 2017 |  | $ | — |

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