Accounting Policies (Schedule of Inventories) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Raw materials	$ 27,006us-gaap_InventoryRawMaterials	$ 25,754us-gaap_InventoryRawMaterials
Work in process	43,512us-gaap_InventoryWorkInProcess	45,998us-gaap_InventoryWorkInProcess
Finished goods	36,756us-gaap_InventoryFinishedGoods	40,987us-gaap_InventoryFinishedGoods
Total inventories	$ 107,274us-gaap_InventoryNet	$ 112,739us-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.

+ References

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-Publisher SEC

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-Section S99

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 6

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

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