Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Consolidated Net Sales And Long Lived Assets) (Details)

v3.19.3
Segment Information (Consolidated Net Sales And Long Lived Assets) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 28, 2019
Sep. 29, 2018
Sep. 28, 2019
Sep. 29, 2018
Dec. 29, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net sales $ 260,598 $ 296,767 $ 789,604 $ 890,225  
China [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net sales 115,424 $ 144,625 355,571 $ 436,327  
Long-lived assets 88,850   88,850   $ 89,509
United States [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Long-lived assets $ 52,448   $ 52,448   $ 49,195