Inventories (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Inventories [Abstract]
Raw materials and supplies	$ 124,103	$ 127,525
Work in process	29,358us-gaap_InventoryWorkInProcess	30,498us-gaap_InventoryWorkInProcess
Finished products	79,184us-gaap_InventoryFinishedGoods	90,352us-gaap_InventoryFinishedGoods
Inventory reserves	(38,879)us-gaap_InventoryValuationReserves	(43,452)us-gaap_InventoryValuationReserves
Total Inventory	$ 193,766us-gaap_InventoryNet	$ 204,923us-gaap_InventoryNet

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Amount of valuation reserve for inventory.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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