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Inventories (Tables)
9 Months Ended
Sep. 30, 2011
Table Text Block Supplement [Abstract] 
Schedule of Inventories
 September 30, December 31,
 2011 2010
Raw materials $67,920 $60,402
Work-in-progress  21,666  22,288
Finished goods  49,488  37,999
Total $139,074 $120,689