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Note 6 - Inventories
9 Months Ended
Sep. 30, 2014
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]

6.

Inventories


As of September 30, 2014 and December 31, 2013, inventories consisted of the following:


   

September 30,

   

December 31,

 
   

2014

   

2013

 
                 

Raw materials

  $ 5,546,000     $ 5,876,000  

Work in process

    3,811,000       2,178,000  

Finished goods

    4,314,000       6,086,000  
    $ 13,671,000     $ 14,140,000