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Other Intangible Assets (Details Textual) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  |  | 3 Months Ended |  | 3 Months Ended
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Dec. 31, 2012 | Dec. 31, 2011 | Mar. 31, 2013 Internally Developed Software and Other Costs [Member] | Mar. 31, 2012 Internally Developed Software and Other Costs [Member] | Mar. 31, 2013 Others [Member] | Mar. 31, 2013 Cost of goods sold [Member] Others [Member] | Mar. 31, 2012 Cost of goods sold [Member] Others [Member] | Mar. 31, 2013 Selling, general and administrative expenses [Member] Others [Member] | Mar. 31, 2012 Selling, general and administrative expenses [Member] Others [Member] | Mar. 31, 2013 Strata [Member] | Dec. 24, 2012 Strata [Member] | Mar. 31, 2013 Strata [Member] Customer relationships [Member] | Mar. 31, 2013 Strata [Member] Non-compete agreements [Member] | Mar. 31, 2013 Strata [Member] Technology [Member] | Mar. 31, 2013 Strata [Member] Cost of goods sold [Member] Technology [Member] | Mar. 31, 2012 Strata [Member] Cost of goods sold [Member] Technology [Member] | Mar. 31, 2013 Strata [Member] Selling, general and administrative expenses [Member] Customer relationships [Member] | Mar. 31, 2012 Strata [Member] Selling, general and administrative expenses [Member] Customer relationships [Member] | Mar. 31, 2013 Strata [Member] Selling, general and administrative expenses [Member] Non-compete agreements [Member] | Mar. 31, 2012 Strata [Member] Selling, general and administrative expenses [Member] Non-compete agreements [Member]
Intangible Assets (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible asset | $ 108.3 | $ 53.7 | $ 106.2 | $ 51.2 | $ 12.2 | $ 5.6 | $ 48.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization expense | 2.1 | 1.0 |  |  | 0 | 0 |  | 0.6 | 0.6 | 0.4 | 0.4 |  |  |  |  |  | 0.3 | 0 | 0.6 | 0 | 0.2 | 0
Assets being amortized duration |  |  |  |  |  |  | 13 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of voting equity interest acquired |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |
Allocation of purchase price to other intangible assets |  |  |  |  |  |  |  |  |  |  |  | $ 48.0 |  | $ 28.2 | $ 1.5 | $ 18.3 |  |  |  |  |  |
Weighted average expected life |  |  |  |  |  |  |  |  |  |  |  | 13 years 1 month 6 days |  | 11 years 6 months 0 days | 2 years | 16 years 6 months 0 days |  |  |  |  |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Percentage of voting equity interests acquired in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + 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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