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Note 6 - Inventories
3 Months Ended
Mar. 31, 2014
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]

6.

Inventories


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


   

March 31,

   

December 31,

 
   

2014

   

2013

 

Raw materials

  $ 6,180,000     $ 5,876,000  

Work in process

    2,245,000       2,178,000  

Finished goods

    6,057,000       6,086,000  
    $ 14,482,000     $ 14,140,000