Quarterly report pursuant to Section 13 or 15(d)

Credit Facilities (Details Textual)

v3.20.2
Credit Facilities (Details Textual)
€ in Thousands, ₩ in Thousands, ¥ in Thousands
6 Months Ended
Jun. 23, 2020
EUR (€)
Installment
May 18, 2020
CNY (¥)
Jun. 27, 2020
USD ($)
Jun. 29, 2019
USD ($)
Jun. 27, 2020
KRW (₩)
Debt Instrument [Line Items]          
Loans maturity, description     Various    
PNC Bank, National Association, as Administrative Agent, and Lender Party [Member]          
Debt Instrument [Line Items]          
Interest expense recognized | $     $ 4,250,000 $ 3,803,000  
PNC Bank, National Association, as Administrative Agent, and Lender Party [Member] | Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Credit facilities, maximum borrowing capacity | $     $ 400,000,000    
Effective interest rate     1.87%   1.87%
Intesa Sanpaolo S.p.A [Member] | Term Loan [Member]          
Debt Instrument [Line Items]          
Loan provided under agreement | € € 5,000        
Number of monthly installments for repayment of loan facility | Installment 12        
Interest rate 1.25%        
Citibank [Member] | Fixed Asset Facility [Member]          
Debt Instrument [Line Items]          
Borrows amount | ¥   ¥ 50,000      
Interest rate   1-year loan prime rate plus 1.50%      
Final payment due date   Nov. 30, 2022      
Number of days for borrows amount   180 days      
Citibank [Member] | Working Capital Facility [Member]          
Debt Instrument [Line Items]          
Interest rate   1-year loan prime rate plus 0.50%      
Maximum borrow amounts under agreement | ¥   ¥ 15,000      
Shinhan Bank [Member] | Term Loan [Member]          
Debt Instrument [Line Items]          
Credit facilities, maximum borrowing capacity | ₩         ₩ 1,000,000
Loan maturity month and year     2020-03    
National Australia Bank [Member] | Other Long-Term Debt [Member]          
Debt Instrument [Line Items]          
Loans, frequency of payments     monthly    
Loans maturity, description     The loans mature at various dates through July 2023.    
National Australia Bank [Member] | Minimum [Member] | Other Long-Term Debt [Member]          
Debt Instrument [Line Items]          
Interest rates     4.50%   4.50%
National Australia Bank [Member] | Maximum [Member] | Other Long-Term Debt [Member]          
Debt Instrument [Line Items]          
Interest rates     5.10%   5.10%