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Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Goodwill [Line Items] |  |  |  |
Goodwill, impairment loss |  | $ 35,381 |  |
Amortization expense of intangible assets |  | 8,700 | $ 10,200 |
Estimated amortization expense, remainder of 2015 | $ 8,400 | 8,400 |  |
Estimated amortization expense, 2016 | 13,100 | 13,100 |  |
Estimated amortization expense, 2017 | 11,800 | 11,800 |  |
Estimated amortization expense, 2018 | 10,700 | 10,700 |  |
Estimated amortization expense, 2019 | 9,200 | $ 9,200 |  |
Needle Coke |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill, impairment loss | $ 35,400 |  |  | $ 75,700
Decrease in market prices | 18.00% |  |  |
Discounted cash flow model, period of forecasted cash flows | 17 years |  |  |
Discounted cash flow model, discount rate | 10.50% |  |  |

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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 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: 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=56944662&loc=d3e3602-108585 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=26713463&loc=d3e16323-109275 + Details
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