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Inventories:
3 Months Ended
Mar. 31, 2013
Inventory Disclosure [Abstract]  
Inventories [Text Block]
Inventories:
 
Inventories consisted of the following:
 
 
March 31, 2013
 
December 31, 2012
Raw material
$
19,616

 
$
20,808

Work in process
4,453

 
3,013

Finished goods
12,471

 
12,512

Total
$
36,540

 
$
36,333