Annual report pursuant to Section 13 and 15(d)

Segments - Summarizes the Company's Sales and Long-Lived Assets by Geographic Regions (Details)

v3.10.0.1
Segments - Summarizes the Company's Sales and Long-Lived Assets by Geographic Regions (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 29, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jul. 01, 2017
Apr. 01, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets                      
Sales                 $ 803,256 $ 624,464 $ 633,123
Property, Plant and Equipment, Net of Accumulated Depreciation $ 120,862       $ 125,830       120,862 125,830  
Net Income (Loss) 12,485 $ 16,999 $ 14,025 $ 3,294 (5,653) $ 6,060 $ 7,685 $ 11,587 46,803 19,679 48,424
Exchange gain (loss) included in net income (300)               (300)    
Cumulative translation adjustments (7,200)       (4,500)       (7,200) (4,500)  
United States                      
Revenues from External Customers and Long-Lived Assets                      
Sales                 575,830 482,219 504,270
Property, Plant and Equipment, Net of Accumulated Depreciation 110,738       116,026       110,738 116,026  
North America (excluding United States)                      
Revenues from External Customers and Long-Lived Assets                      
Sales                 10,834 6,198 12,331
Asia                      
Revenues from External Customers and Long-Lived Assets                      
Sales                 112,135 58,732 52,171
Europe                      
Revenues from External Customers and Long-Lived Assets                      
Sales                 98,193 73,677 61,200
South America                      
Revenues from External Customers and Long-Lived Assets                      
Sales                 1,973 1,280 577
Other                      
Revenues from External Customers and Long-Lived Assets                      
Sales                 4,291 2,358 2,574
France                      
Revenues from External Customers and Long-Lived Assets                      
Property, Plant and Equipment, Net of Accumulated Depreciation 9,241       9,094       9,241 9,094  
Canada                      
Revenues from External Customers and Long-Lived Assets                      
Property, Plant and Equipment, Net of Accumulated Depreciation 883       710       883 710  
Non-US                      
Revenues from External Customers and Long-Lived Assets                      
Sales                 70,600 53,900 50,100
Net Income (Loss)                 5,500 2,200 $ 1,800
Net assets $ 45,000       $ 47,400       $ 45,000 $ 47,400