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, 2014
Dec. 31, 2013
Inventories [Abstract]    
Finished goods $ 46,362 $ 45,734
Work-in-process 872 891
Raw materials and supplies 9,856 7,429
Inventories $ 57,090 $ 54,054