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Derivative Instruments & Hedging Activities (Details Textual) € in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 28, 2019 USD ($) Contract | Dec. 29, 2018 USD ($) | Dec. 30, 2017 USD ($) | Dec. 28, 2019 EUR (€) Contract
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |  |  |
Interest expense | $ 15,387,000 | $ 13,876,000 | $ 3,781,000 |
Carrying value of total long term non-revolving debt | 92,488,000 | 97,983,000 |  |
Gain loss on derivative hedge recorded in AOCI as a part of currency translation adjustment | 187,000 |  |  |
Net investment hedge reclassified from AOCI into income | 0 |  |  |
Europe [Member] |  |  |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |  |  |
Carrying value of total long term non-revolving debt | $ 111,708,000 |  |  |
Revolving Credit Facility [Member] | Europe [Member] |  |  |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |  |  |
Net investment hedge | € |  |  |  | € 100,000
Forward Foreign Exchange Contracts [Member] | Derivatives Not Designated as Hedging Instruments [Member] |  |  |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |  |  |
Derivative instrument, notional amount | € |  |  |  | € 62,342
Derivative contract expire date | Jul. 31, 2021 |  |  |
Derivative, number of instruments held | Contract | 12 |  |  | 12
Cash Flow Hedging [Member] |  |  |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |  |  |
Interest expense | $ 15,387,000 | $ 13,876,000 |  |
Cash Flow Hedging [Member] | Interest Rate Swap Contract [Member] | Derivatives Designated as Hedging Instruments [Member] |  |  |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |  |  |
Derivative instrument, notional amount | 175,000,000 |  |  |
Annual decrease in derivative notional amount | $ 25,000,000 |  |  |
Derivative contract effective date | Aug. 02, 2018 |  |  |
Derivative contract expire date | Apr. 03, 2023 |  |  |

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