Quarterly report pursuant to Section 13 or 15(d)

Credit Facilities (Details Textual)

v3.19.1
Credit Facilities (Details Textual)
€ in Thousands, ₩ in Thousands
3 Months Ended
Mar. 30, 2019
USD ($)
Mar. 31, 2018
USD ($)
Mar. 30, 2019
EUR (€)
Mar. 30, 2019
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 $ 4,164,000 $ 702,000    
Loan maturity date Apr. 03, 2023      
PNC Bank, National Association, as Administrative Agent, and Lender Party [Member] | Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Credit facilities, maximum capacity $ 400,000,000      
Net investment hedge | €     € 30,000  
Effective interest rate 4.24%   4.24% 4.24%
Shinhan Bank [Member]        
Debt Instrument [Line Items]        
Loan maturity date Mar. 30, 2020      
Shinhan Bank [Member] | Term Loan [Member]        
Debt Instrument [Line Items]        
Credit facilities, maximum capacity | ₩       ₩ 1,000,000
Effective interest rate 2.05%   2.05% 2.05%
Loan maturity date Mar. 30, 2020      
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 January 2024.      
National Australia Bank [Member] | Minimum [Member] | Other Long-Term Debt [Member]        
Debt Instrument [Line Items]        
Interest rates 4.00%   4.00% 4.00%
National Australia Bank [Member] | Maximum [Member] | Other Long-Term Debt [Member]        
Debt Instrument [Line Items]        
Interest rates 5.30%   5.30% 5.30%
National Australia Bank [Member] | Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Credit facilities, maximum capacity $ 3,000,000