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Derivative Financial Instruments and Fair Value Measurements (Narrative) (Details) $ in Millions, $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 03, 2021 USD ($) | Jun. 27, 2020 MXN ($) | Jul. 03, 2021 USD ($) | Jun. 27, 2020 MXN ($) | Jan. 02, 2021 USD ($) | Sep. 26, 2020 USD ($)
Forward foreign currency contracts [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative notional amount |  | $ 11.5 |  | $ 11.5 |  |
Realized gain on derivative contracts |  | $ 0.2 |  | $ 0.2 |  |
Not designated as hedging instruments [Member] | Foreign currency put and call option contracts (a zero-cost collar) [Member] |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |
Derivative notional amount | $ 1.1 |  | $ 1.1 |  |  | $ 11.8
Collar ceiling rate of Mexican pesos to US dollar | 24.00 |  | 24.00 |  |  |
Floor rate of Mexican pesos to US dollar | 21.14 |  | 21.14 |  |  |
Unrealized gains included in other current assets | $ 0.1 |  | $ 0.1 |  | $ 0.8 |
Unrealized gain (loss) on derivative contracts | (0.3) |  | (0.7) |  |  |
Derivative instruments gain (loss) recognized in income net | $ 0.3 |  | $ 0.5 |  |  |

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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=125515794&loc=SL5618551-113959 + Details
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