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INVENTORY
9 Months Ended
Sep. 30, 2012
INVENTORY  
INVENTORY

4.  INVENTORY

 

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

 

 

 

September 30,
2012

 

December 31,
2011

 

Parts and supplies

 

$

239,403

 

$

212,228

 

Work in progress

 

122,776

 

98,402

 

Finished goods

 

43,411

 

31,465

 

Inventory, net of reserves

 

$

405,590

 

$

342,095

 

 

As of September 30, 2012 and December 31, 2011, we had inventory reserves of $12.6 million and $14.0 million, respectively.