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Inventories
3 Months Ended
Mar. 31, 2013
Inventory Disclosure [Abstract]  
Inventories
Inventories
Inventories consisted of the following (in thousands): 
 
March 31,
2013
 
December 31,
2012
Raw materials
$
4,989

 
$
9,179

Work in process
1,081

 
1,210

Finished goods
16,760

 
16,136

Total inventories
$
22,830

 
$
26,525


As of March 31, 2013 and December 31, 2012, the fair value of inventories acquired included a step-up in the value of inventories of $2.4 million and $4.0 million, respectively.