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Inventories
3 Months Ended
Mar. 31, 2014
Inventories [Abstract]  
Inventories

2. INVENTORIES

Inventories consist of the following (in thousands):

    March 31,   December 31,
    2014   2013
Raw material $ 54,830 $ 52,751
Work-in-process   11,310   11,100
Finished goods   61,060   57,301
Total inventories $ 127,200 $ 121,152