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Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified |  |  | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2013 Engineering drawings | Dec. 31, 2013 Minimum Patents | Dec. 31, 2013 Minimum Customer relationships | Dec. 31, 2013 Maximum Patents | Dec. 31, 2013 Maximum Customer relationships
Inventories |  |  |  |  |  |  |
Percentage of the company's inventories valued using the first-in, first-out (FIFO) method | 87.00% | 88.00% |  |  |  |  |
Increase in inventories if the FIFO inventory valuation method had been used exclusively | $ 36.2 | $ 36.6 |  |  |  |  |
Estimated useful lives of other intangible assets |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 15 years | 10 years | 10 years | 20 years | 20 years

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- Definition The excess of replacement or current cost over the stated LIFO (last in first out) inventory value when the LIFO inventory method is utilized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(c)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph c -Article 5 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The percentage of FIFO (first in first out) inventory to total inventory as of the balance sheet date if other than 100 percent. + References No definition available. + Details
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