Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Schedule Of Revenues From External Customers By Geographical Areas) (Details)

v3.8.0.1
Segment Information (Schedule Of Revenues From External Customers By Geographical Areas) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Apr. 01, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales to External Customers $ 291,998 $ 255,323
Greater China [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales to External Customers 157,808 131,738
Southeast Asia Pacific [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales to External Customers 56,228 50,406
North Asia [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales to External Customers 18,084 12,956
Asia Pacific [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales to External Customers 232,120 195,100
Americas And Europe [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net Sales to External Customers $ 59,878 $ 60,223