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Inventories
3 Months Ended
Mar. 31, 2012
Inventories [Abstract]  
Inventories [Text Block]
Inventories

The composition of inventories is as follows:

 
 
March 31, 2012
 
December 31, 2011
 
Raw materials
$
96,868

 
$
101,069

 
Work in progress
49,979

 
50,455

 
Finished goods and parts
73,470

 
87,846

 
LIFO allowance
(22,138
)
 
(21,660
)
 
Total
$
198,179

 
$
217,710