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Inventories
9 Months Ended
Sep. 30, 2013
Inventories Disclosure [Abstract]  
Inventories Disclosure [Text Block]

4. Inventories

 

Inventories consist of the following:

   September 30,  December 31,
   2013  2012
   (in thousands)
Finished goods$ 7,957 $ 8,023
Work in process  806   731
Raw materials  9,265   9,008
 Total$ 18,028 $ 17,762