Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Inventories [Abstract]    
Finished goods $ 45,702 $ 41,325
Work-in-process 1,313 888
Raw materials and supplies 6,024 4,924
Inventories $ 53,039 $ 47,137