XML 28 R14.htm IDEA: XBRL DOCUMENT v3.8.0.1
Inventories
 12 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Inventories

6.  INVENTORIES

Inventories as of December 31 were as follows (in thousands):

 

     2017      2016  

Raw materials

    $ 27,400    $ 18,648

Work-in-process

      3,596      3,361

Finished goods

      5,503      5,127
  

 

 

     

 

 

  

Net balance

    $ 36,499    $ 27,136