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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract] |
Identifiable intangible assets | Identifiable intangible assets at December 31, 2012 and December 31, 2011 are comprised of the following: December 31, 2012:
|  | Original cost |  | Accumulated amortization |  | Net book value
Customer relationships |  | $ | 38.5 |  |  | $ | (3.2 | ) |  | $ | 35.3 |
Backlog |  | 0.8 |  |  | (0.8 | ) |  | — |
Trademark and trade name |  | 0.4 |  |  | (0.3 | ) |  | 0.1 |
Total |  | $ | 39.7 |  |  | $ | (4.3 | ) |  | $ | 35.4 |
December 31, 2011:
|  | Weighted average Estimated useful life |  | Original cost |  | Accumulated amortization |  | Net book value
Customer relationships |  | 25 |  | $ | 38.5 |  |  | $ | (1.7 | ) |  | $ | 36.8 |
Backlog |  | 2 |  | 0.8 |  |  | (0.7 | ) |  | 0.1 |
Trademark and trade name |  | 3 |  | 0.4 |  |  | (0.1 | ) |  | 0.3 |
Total |  | 24 |  | $ | 39.7 |  |  | $ | (2.5 | ) |  | $ | 37.2 |
Expected amortization of intangible assets for the next five years | The expected amortization of intangible assets for the next five calendar years is as follows:
2013 | $ | 1.7 |
2014 | 1.6 |
2015 | 1.6 |
2016 | 1.6 |
2017 | 1.6 |
Thereafter | 27.3 |
Total | $ | 35.4 |

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- Definition Tabular disclosure of the estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years. + 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) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + 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) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 + Details
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