Fair Value Information and Derivative Financial Instruments (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Asset (liability)
Fair value of foreign currency and commodity (metals) derivative instruments	$ 350	$ 1,450
Fair value of foreign currency contract liability		1,399
Prepaid expenses [Member]
Asset (liability)
Fair value of foreign currency and commodity (metals) derivative instruments	847	2,128
Other liabilities and accrued items [Member]
Asset (liability)
Fair value of foreign currency contract liability	$ (497)	$ (678)

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents contracts related to the exchange of different currencies, including foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into and existing as of the balance sheet date.

No definition available.

Name:	us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant