Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments & Hedging Activities (Details Textual)

v3.20.1
Derivative Instruments & Hedging Activities (Details Textual)
€ in Thousands
3 Months Ended
Mar. 28, 2020
USD ($)
Contract
Mar. 30, 2019
USD ($)
Mar. 28, 2020
EUR (€)
Contract
Dec. 28, 2019
USD ($)
Derivative Instruments And Hedging Activities Disclosures [Line Items]        
Interest expense $ 2,951,000 $ 4,385,000    
Carrying value of total long term non-revolving debt 90,307,000     $ 92,488,000
Gain loss on derivative hedge recorded in AOCI as a part of currency translation adjustment 265,000      
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 $ 111,365,000      
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 | €     € 61,843  
Derivative contract expire date Oct. 01, 2021      
Derivative, number of instruments held | Contract 11   11  
Cash Flow Hedging [Member]        
Derivative Instruments And Hedging Activities Disclosures [Line Items]        
Interest expense $ 2,951,000 $ 4,385,000    
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