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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Inventory, Finished Goods, Net of Reserves $ 32,249us-gaap_InventoryFinishedGoodsNetOfReserves $ 37,143us-gaap_InventoryFinishedGoodsNetOfReserves
Inventory, Raw Materials and Purchased Parts, Net of Reserves 9,147us-gaap_InventoryRawMaterialsAndPurchasedPartsNetOfReserves 8,323us-gaap_InventoryRawMaterialsAndPurchasedPartsNetOfReserves
Inventory, Work in Process, Net of Reserves 1,975us-gaap_InventoryWorkInProcessNetOfReserves 1,355us-gaap_InventoryWorkInProcessNetOfReserves
Inventory, Net $ 43,371us-gaap_InventoryNet $ 46,821us-gaap_InventoryNet