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, 2013
Dec. 31, 2012
Inventories [Abstract]    
Finished goods $ 47,254 $ 53,009
Work-in-process 971 1,112
Raw materials and supplies 8,490 6,543
Inventories $ 56,715 $ 60,664