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Goodwill and Other Intangible Assets (Schedule of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 46,855 | $ 46,811
Accumulated Amortization | (8,047) | (6,646)
Net Carrying Amount | 38,808 | 40,165
Non-compete agreements [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period In Years | 5 years | 5 years
Gross Carrying Value | 380 | 380
Accumulated Amortization | (370) | (367)
Net Carrying Amount | 10 | 13
Patents [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period In Years | 10 years | 10 years
Gross Carrying Value | 859 | 815
Accumulated Amortization | (441) | (412)
Net Carrying Amount | 418 | 403
Customer relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period In Years | 23 years | 23 years
Gross Carrying Value | 19,960 | 19,960
Accumulated Amortization | (3,032) | (2,488)
Net Carrying Amount | 16,928 | 17,472
Supplier relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period In Years | 5 years | 5 years
Gross Carrying Value | 350 | 350
Accumulated Amortization | (178) | (143)
Net Carrying Amount | 172 | 207
Trademarks [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period In Years | 17 years | 17 years
Gross Carrying Value | 6,280 | 6,280
Accumulated Amortization | (1,095) | (879)
Net Carrying Amount | 5,185 | 5,401
Technology [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period In Years | 18 years | 18 years
Gross Carrying Value | 19,026 | 19,026
Accumulated Amortization | (2,931) | (2,357)
Net Carrying Amount | $ 16,095 | $ 16,669
Weighted Average [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Amortization Period In Years | 20 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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