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Business Acquisitions and Investments, European OE Business Acquisition (Details) In Millions, unless otherwise specified | 1 Months Ended | 9 Months Ended | 1 Months Ended | 9 Months Ended
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Apr. 30, 2012 Customer Relationships [Member] | Feb. 28, 2013 Standard Motor Products Holdings Ltd [Member] USD ($) | Feb. 28, 2013 Standard Motor Products Holdings Ltd [Member] GBP (£) | Sep. 30, 2013 Standard Motor Products Holdings Ltd [Member] Minimum [Member] USD ($) | Sep. 30, 2013 Standard Motor Products Holdings Ltd [Member] Maximum [Member] USD ($) | Feb. 28, 2013 Standard Motor Products Holdings Ltd [Member] Customer Relationships [Member] USD ($) | Sep. 30, 2013 Standard Motor Products Holdings Ltd [Member] Customer Relationships [Member] USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |
Purchase price of business |  | $ 6.5 | £ 4.2 |  |  |  |
Incremental annual revenue from acquired business |  |  |  | 1 | 2 |  |
Intangible assets acquired in business acquisition |  |  |  |  |  | 3.8 | 3.8
Goodwill acquired in business acquisition |  | $ 2 |  |  |  |  |
Estimated useful life of intangible assets | 7 years |  |  |  |  | 10 years | 10 years

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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