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Inventories
6 Months Ended
Jun. 30, 2011
Inventories  
Inventories

7. Inventories

Inventories are comprised of the following (in thousands):

    June 30,   December 31,
    2011   2010
Raw materials $ 4,333 $ 4,301
Work-in-process   310   349
Finished goods   1,577   1,779
Total inventories $ 6,220 $ 6,429