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Goodwill and Intangible Assets (Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 61,197 | $ 61,236
Accumulated Amortization | 18,975 | 17,506
Net Carrying Amount | 42,222 | 43,730
Trademarks and patents [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 1,064 | 1,075
Accumulated Amortization | 317 | 303
Net Carrying Amount | 747 | 772
Technology [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 37,852 | 37,825
Accumulated Amortization | 14,406 | 13,340
Net Carrying Amount | 23,446 | 24,485
Covenant not-to-compete [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 1,041 | 1,056
Accumulated Amortization | 675 | 628
Net Carrying Amount | 366 | 428
Customer relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 21,240 | 21,280
Accumulated Amortization | 3,577 | 3,235
Net Carrying Amount | $ 17,663 | $ 18,045

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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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