Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Inventories    
Finished goods and work-in-process $ 50,981 $ 38,906
Raw material and supplies 12,804 9,342
Inventories $ 63,785 $ 48,248