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Inventory
3 Months Ended
Mar. 31, 2014
Inventory Disclosure [Abstract]  
Inventory
Inventory

Our inventory, net of allowance for obsolescence of $128,000 at March 31, 2014 and December 31, 2013, consisted of the following amounts:
 
March 31, 2014
 
December 31, 2013
 
(in thousands)
Raw materials
$
20,583

 
$
20,524

Work in process
5,181

 
6,308

 
$
25,764

 
$
26,832



During the three months ended March 31, 2014 and 2013, there were no write offs of obsolete inventory against the allowance for obsolescence.