Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Inventories [Abstract]    
Finished goods $ 66,779us-gaap_InventoryFinishedGoods $ 42,251us-gaap_InventoryFinishedGoods
Work-in-process 7,815us-gaap_InventoryWorkInProcess 164us-gaap_InventoryWorkInProcess
Raw materials 48,791us-gaap_InventoryRawMaterialsAndSupplies 45,991us-gaap_InventoryRawMaterialsAndSupplies
Total Inventory $ 123,385us-gaap_InventoryNet $ 88,406us-gaap_InventoryNet