Commitments and Contingent Liabilities Warranty and Other Claims (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Product Liability Contingency, Loss Exposure Not Accrued, Low Estimate	$ 325
Product Liability Contingency, Loss Exposure Not Accrued, High Estimate	$ 1,250

High-end of the range estimate for a reasonably possible liability for product liability damages for which no accrual has been recorded.

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section Y

-Paragraph Question 2

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14557-108349

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration