Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Segment Information (Consolidated Net Sales And Long Lived Assets) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 30, 2019
Mar. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net sales $ 272,990 $ 291,998
China [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net sales 127,372 140,592
Long-lived assets 95,386 89,509
United States [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-lived assets $ 49,875 $ 49,195