Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Inventories    
Finished goods and work-in-process $ 44,684 $ 26,175
Raw material and supplies 2,195 1,802
Inventories $ 46,879 $ 27,977