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Derivative Instruments (Tables) | 9 Months Ended
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Sep. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items] |
Derivative Instruments, Gain (Loss) [Table Text Block] | Gains (losses) associated with derivative instruments not designated as hedging instruments are as follows:
|  |  | Three Months Ended |  | Nine Months Ended
| Classification |  | September 30, 2017 |  | October 1, 2016 |  | September 30, 2017 |  | October 1, 2016
|  |  | (In thousands)
Gain (loss) recognized in income | Other income, net |  | $ | 9 |  |  | $ | (18 | ) |  | $ | (495 | ) |  | $ | (392 | )
The following tables reflect the effect of foreign exchange forward contracts that are designated as cash flow hedging instruments for the three and nine months ended September 30, 2017 and October 1, 2016 (in thousands):
|  | Effective Portion |  | Ineffective Portion
|  | Gain (loss) recognized in OCI on Derivative (1) |  | Gain (loss) reclassified from accumulated OCI into income (2) |  | Gain (loss) recognized in income (3)
|  | Three months ended |  |  |  | Three months ended |  |  |  | Three months ended
|  | September 30, 2017 |  | October 1, 2016 |  | Classification |  | September 30, 2017 |  | October 1, 2016 |  | Classification |  | September 30, 2017 |  | October 1, 2016
Foreign currency forward contracts |  | $ | (21 | ) |  | $ | — |  |  | Revenue |  | $ | (39 | ) |  | $ | — |  |  | Other income, net |  | $ | — |  |  | $ | — |
|  | Effective Portion |  | Ineffective Portion
|  | Gain (loss) recognized in OCI on Derivative (1) |  | Gain (loss) reclassified from accumulated OCI into income (2) |  | Gain (loss) recognized in income (3)
|  | Nine months ended |  |  |  | Nine months ended |  |  |  | Nine months ended
|  | September 30, 2017 |  | October 1, 2016 |  | Classification |  | September 30, 2017 |  | October 1, 2016 |  | Classification |  | September 30, 2017 |  | October 1, 2016
Foreign currency forward contracts |  | $ | 200 |  |  | $ | — |  |  | Revenue |  | $ | (58 | ) |  | $ | — |  |  | Other income, net |  | $ | (5 | ) |  | $ | — |
(1) | The amount represents the change in fair value of derivative contracts due to changes in spot rates.
(2) | The amount represents reclassification from other comprehensive income to earnings that occurs when the hedged item affects earnings.
(3) | The amount represents the change in fair value of derivative contracts due to changes in the forward rates. No gains or losses were reclassified as a result of discontinuance of cash flow hedges.

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 + Details
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