Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Segment Information (Consolidated Net Sales And Long Lived Assets) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jun. 29, 2019
Jun. 30, 2018
Dec. 29, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net sales $ 256,016 $ 301,460 $ 529,006 $ 593,458  
China [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Net sales 112,775 $ 151,110 240,147 $ 291,702  
Long-lived assets 92,934   92,934   $ 89,509
United States [Member]          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Long-lived assets $ 51,675   $ 51,675   $ 49,195