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Accumulated Other Comprehensive Income (Loss) and Shareholders' Equity (Tables) | 9 Months Ended
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Sep. 30, 2017
Equity [Abstract] |
Schedule of Components of Accumulated Other Comprehensive Income and Changes in Accumulated Other Comprehensive Income, Net of Tax | The following tables summarize the components of accumulated other comprehensive income (loss) and the changes in accumulated other comprehensive income (loss), net of tax, as applicable for the nine months ended (in thousands):
|  | Foreign Currency Translation Adjustment |  | Unrealized Gains (Losses) on Marketable Securities |  | Pension and Post-retirement Liabilities |  | Derivative Financial Instruments |  | Accumulated Other Comprehensive Income (Loss)
Balance as of December 31, 2016 |  | $ | (1,188 | ) |  | $ | (105 | ) |  | $ | (5,167 | ) |  | $ | 1,460 |  |  | $ | (5,000 | )
Other comprehensive income (loss) before reclassifications |  | 779 |  |  | 68 |  |  | — |  |  | (471 | ) |  | 376 |
Tax (expense) or benefit |  | — |  |  | (24 | ) |  | — |  |  | 174 |  |  | 150 |
Amounts reclassified from accumulated other comprehensive (income) loss, net of tax |  | — |  |  | — |  |  | — |  |  | 207 |  |  | 207 |
Balance as of September 30, 2017 |  | $ | (409 | ) |  | $ | (61 | ) |  | $ | (5,167 | ) |  | $ | 1,370 |  |  | $ | (4,267 | )
Amounts in parentheses indicate reductions in equity.
|  | Foreign Currency Translation Adjustment |  | Unrealized Gains (Losses) on Marketable Securities |  | Pension and Post-retirement Liabilities |  | Derivative Financial Instruments |  | Accumulated Other Comprehensive Income (Loss)
Balance as of January 2, 2016 |  | $ | 322 |  |  | $ | (2 | ) |  | $ | (5,506 | ) |  | $ | — |  |  | $ | (5,186 | )
Other comprehensive income (loss) before reclassifications |  | (678 | ) |  | 17 |  |  | — |  |  | (2,506 | ) |  | (3,167 | )
Tax (expense) or benefit |  | — |  |  | (6 | ) |  | — |  |  | 922 |  |  | 916 |
Amounts reclassified from accumulated other comprehensive (income) loss, net of tax |  | — |  |  | — |  |  | — |  |  | 453 |  |  | 453 |
Balance as of October 1, 2016 |  | $ | (356 | ) |  | $ | 9 |  |  | $ | (5,506 | ) |  | $ | (1,131 | ) |  | $ | (6,984 | )
Amounts in parentheses indicate reductions in equity.
Schedule of Reclassification from Accumulated Other Comprehensive Income | The following table details the reclassifications from accumulated other comprehensive income (loss) (in thousands):
|  |  |  | Three Months Ended |  | Nine Months Ended
Details about Accumulated Other Comprehensive Income (Loss) Components |  | Affected Line Item in the Statement Where Net Income is Presented |  | September 30, 2017 |  | October 1, 2016 |  | September 30, 2017 |  | October 1, 2016
Derivative financial instruments |  |  |  |  |  |  |  |  |  |
Interest rate swap |  | Interest (expense) or income |  | $ | (27 | ) |  | $ | (302 | ) |  | $ | (328 | ) |  | $ | (717 | )
|  | Tax (expense) or benefit |  | 10 |  |  | 111 |  |  | 121 |  |  | 264 |
|  | Net of tax |  | $ | (17 | ) |  | $ | (191 | ) |  | $ | (207 | ) |  | $ | (453 | )
Amounts in parentheses indicate reductions to profit.

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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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