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Inventories
6 Months Ended
Jun. 30, 2012
Inventories [Abstract]  
Inventories [Text Block]
Inventories

The composition of inventories is as follows:

 
 
June 30, 2012
 
December 31, 2011
 
Raw materials
$
90,180

 
$
101,069

 
Work in progress
43,511

 
50,455

 
Finished goods and parts
72,068

 
87,846

 
LIFO allowance
(22,476
)
 
(21,660
)
 
Total
$
183,283

 
$
217,710