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Note 5 - Inventories
3 Months Ended
Jun. 30, 2011
Inventory Disclosure [Text Block]
5.
Inventories

            Inventories consist of the following:

   
June 30,
2011
   
December 31,
2010
 
Raw materials
  $ 9,488,000     $ 8,536,000  
Work in process
    929,000       1,797,000  
Finished goods
    4,703,000       6,985,000  
    $ 15,120,000     $ 17,318,000