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INVENTORY
3 Months Ended
Mar. 31, 2012
INVENTORY  
INVENTORY

3.  INVENTORY

 

Inventory, net of reserves, consisted of the following amounts (in thousands):

 

 

 

March 31,
2012

 

December 31,
2011

 

Parts and supplies

 

$

238,525

 

$

225,804

 

Work in progress

 

125,247

 

103,414

 

Finished goods

 

33,606

 

32,467

 

Inventory, net of reserves

 

$

397,378

 

$

361,685

 

 

As of March 31, 2012 and December 31, 2011, we had inventory reserves of $16.7 million and $16.8 million, respectively.