December 31,
 
 
 
2016
 
 
2015
 
                 
Raw materials
   $
4,313,000
    $
6,456,000
 
Work in process
    
2,535,000
     
4,143,000
 
Finished goods
    
4,146,000
     
5,799,000
 
    $
10,994,000
    $
16,398,000