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 9 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Sep. 30, 2017
Oct. 01, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net Sales to External Customers $ 261,765 $ 254,219 $ 774,151 $ 753,182
Greater China [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net Sales to External Customers 131,273 124,470 399,713 373,308
Southeast Asia Pacific [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net Sales to External Customers 52,310 54,351 151,381 154,335
North Asia [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net Sales to External Customers 15,708 11,555 42,612 33,376
Asia Pacific [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net Sales to External Customers 199,291 190,376 593,706 561,019
Americas And Europe [Member]        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Net Sales to External Customers $ 62,474 $ 63,843 $ 180,445 $ 192,163