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Note 6 - Inventories
6 Months Ended
Jun. 30, 2013
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]

6.             Inventories


As of June 30, 2013 and December 31, 2012, inventories consisted of the following:


   

June 30,

   

December 31,

 
   

2013

   

2012

 
                 

Raw materials

  $ 6,206,000     $ 8,212,000  

Work in process

    2,250,000       3,056,000  

Finished goods

    5,827,000       5,896,000  
    $ 14,283,000     $ 17,164,000