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Inventories
6 Months Ended
Jun. 30, 2013
Inventories [Abstract]  
Inventories

5. Inventories

Inventories consisted of the following at (in thousands):

June 30, December 31,
2013 2012 2012
Raw materials $ 83,199 $ 73,023 $ 78,434
Work in process   2,254   4,239   2,074
Finished goods   14,324   14,151   16,859
Inventories $ 99,777 $ 91,413 $ 97,367