Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment

The following table presents the composition of property, plant and equipment as of:

 

     December 31,      January 2,  
     2016      2016  
     (in thousands)  

Land

    $ 6,298      $ 6,298  

Buildings and improvements

      51,681        46,229  

Machinery and equipment

      79,421        63,290  

Vehicles

      11,415        9,478  

Software

      16,640        16,278  

Construction in progress

      6,319        8,317  
  

 

 

     

 

 

  

Property, plant and equipment

      171,774        149,890  

Less: Accumulated depreciation

      (87,565 )       (78,387 ) 
  

 

 

     

 

 

  

Property, plant and equipment, net

    $ 84,209      $ 71,503