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Inventories (Tables)
3 Months Ended
Mar. 31, 2013
Inventories [Abstract]  
Inventories
Inventories consist of the following (in thousands):

March 31, 2013
December 31, 2012
Raw materials
$
6,932
$
7,221
Finished goods
4,159
3,893
Total
$
11,091
$
11,114