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Derivative Instruments & Hedging Activities (Details 1) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 30, 2019 | Mar. 31, 2018
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion) | $ (1,082) |
Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member] | Interest Rate Swap Contract [Member] |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion) | (1,521) |
Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedging [Member] | Interest Rate Swap Contract [Member] | Interest Expense, Net [Member] |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Amount of Gain or (Loss) Reclassified from AOCI into Earnings (Effective Portion) | (183) |
Derivatives Not Designated as Hedging Instruments [Member] | Forward Foreign Exchange Contracts [Member] | Foreign Currency Transaction Gain Loss, Net [Member] |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Amount of Gain or (Loss) Recognized in Earnings on Derivatives | $ (24) | $ (505)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 + Details
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- Definition Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580 + Details
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- Definition Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580 + Details
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