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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract] |
Identifiable intangible assets | Identifiable intangible assets at March 31, 2012 and December 31, 2011 are comprised of the following: March 31, 2012:
| Weighted- average estimated useful life |  | Original cost |  | Accumulated amortization |  | Net book value
Customer relationships | 25 |  |  | $ | 38.5 |  |  | $ | (2.0 | ) |  | $ | 36.5 |
Backlog | 2 |  |  | 0.8 |  |  | (0.7 | ) |  | 0.1 |
Trademark and trade name | 3 |  |  | 0.4 |  |  | (0.2 | ) |  | 0.2 |
Total | 24 |  |  | $ | 39.7 |  |  | $ | (2.9 | ) |  | $ | 36.8 |
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 remainder of 2012 and the next four calendar years and thereafter is as follows:
2012 | $ | 1.4 |
2013 | 1.7 |
2014 | 1.6 |
2015 | 1.6 |
2016 | 1.6 |
Thereafter | 28.9 |
Total | $ | 36.8 |

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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 -Topic 350 -SubTopic 30 -Publisher FASB -Number -Article -Subparagraph (a) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of amortizable intangibles assets, in total and by major class, including the gross carrying amount and accumulated amortization. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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=6905858&loc=d3e16265-109275 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) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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