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Note 4 - Inventories
12 Months Ended
Dec. 31, 2013
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]

4.      Inventories


Inventories consisted of the following:


   

December 31,

 
   

2013

   

2012

 
                 

Raw materials

  $ 5,876,000     $ 8,212,000  

Work in process

    2,178,000       3,056,000  

Finished goods

    6,086,000       5,896,000  
    $ 14,140,000     $ 17,164,000