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Goodwill and Other Intangible Assets Finite life intangibles Gross and Net at balance sheet dates (Details) (USD $) In Thousands, unless otherwise specified |  |  |  |  |  |  | 12 Months Ended |  |  |  |  | 12 Months Ended |  |  | 3 Months Ended
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Mar. 31, 2014 | Dec. 31, 2013 | Mar. 31, 2014 Customer Relationships [Member] | Dec. 31, 2013 Customer Relationships [Member] | Mar. 31, 2014 acquired technology [Member] | Dec. 31, 2013 acquired technology [Member] | Dec. 31, 2012 Patents [Member] | Mar. 31, 2014 Patents [Member] | Dec. 31, 2013 Patents [Member] | Mar. 31, 2014 Trade Names [Member] | Dec. 31, 2013 Trade Names [Member] | Dec. 31, 2012 Noncompete Agreements [Member] | Mar. 31, 2014 Noncompete Agreements [Member] | Dec. 31, 2013 Noncompete Agreements [Member] | Mar. 31, 2014 Minimum [Member] Customer Relationships [Member] | Mar. 31, 2014 Minimum [Member] acquired technology [Member] | Mar. 31, 2014 Minimum [Member] Trade Names [Member] | Mar. 31, 2014 Maximum [Member] Customer Relationships [Member] | Mar. 31, 2014 Maximum [Member] acquired technology [Member] | Mar. 31, 2014 Maximum [Member] Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross | $ 90,761 | $ 90,753 | $ 54,730 | $ 54,730 | $ 27,580 | $ 27,580 |  | $ 1,561 | $ 1,493 | $ 6,890 | $ 6,890 |  | $ 0 | $ 60 |  |  |  |  |  |
Finite-Lived Intangible Assets, Accumulated Amortization | 10,188 | 9,151 | 5,775 | 5,236 | 2,965 | 2,598 |  | 303 | 254 | 1,145 | 1,003 |  | 0 | 60 |  |  |  |  |  |
Finite-Lived Intangible Assets, Net | $ 80,573 | $ 81,602 | $ 48,955 | $ 49,494 | $ 24,615 | $ 24,982 |  | $ 1,258 | $ 1,239 | $ 5,745 | $ 5,887 |  | $ 0 | $ 0 |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  | 20 years |  |  |  |  | 3 years |  |  | 5 years | 3 years | 3 years | 30 years | 20 years | 12 years

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + 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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