Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
Segment Information (Schedule Of Revenues From External Customers By Geographical Areas) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 29, 2018
Sep. 29, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 30, 2017
Sep. 30, 2017
Jul. 01, 2017
Apr. 01, 2017
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net Sales to External Customers $ 299,023 $ 296,767 $ 301,460 $ 291,998 $ 273,114 $ 261,765 $ 257,063 $ 255,323 $ 1,189,248 $ 1,047,265 $ 1,006,083
Greater China [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net Sales to External Customers                 654,394 546,777 502,299
Southeast Asia Pacific [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net Sales to External Customers                 225,469 205,289 206,124
North Asia [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net Sales to External Customers                 76,720 58,376 46,023
Asia Pacific [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net Sales to External Customers                 956,583 810,442 754,446
Americas And Europe [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Net Sales to External Customers                 $ 232,665 $ 236,823 $ 251,637