Annual report pursuant to Section 13 and 15(d)

Property, Plant, and Equipment (Details)

v3.8.0.1
Property, Plant, and Equipment (Details) - USD ($)
$ in Thousands
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 193,651 $ 172,945  
Less: Accumulated depreciation (107,251) (96,489)  
Construction in progress 5,531 4,059  
Total 91,931 80,515 $ 74,121
Machinery and equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 103,024 100,695  
Office furniture and equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 15,160 12,886  
Buildings [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 48,977 39,641  
Building and land improvements [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 9,513 9,270  
Land [Member]      
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 16,977 $ 10,453