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Inventories
3 Months Ended
Mar. 31, 2016
Inventories [Abstract]  
Inventories
7.Inventories

Inventories are carried at the lower of cost or market, determined on the first-in, first-out (FIFO) method.

Inventories consisted of the following:

   
March 31,
2016
  
December 31,
2015
 
       
Raw materials
 
$
981,000
  
$
1,009,000
 
Work in process
  
1,189,000
   
816,000
 
Finished goods
  
2,292,000
   
2,473,000
 
  
$
4,462,000
  
$
4,298,000