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Restructuring and Other Charges (Details Textual) (USD $) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2012 employees | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Restructuring and Other Charges (Textual) [Abstract] |  |  |  |
Number of positions eliminated as part of work force reductions | 350 |  |  |
Pre-tax restructuring charge |  | $ 7,000,000 | $ 4,000,000 |
Restructuring and other charges (recoveries), net |  | 8,070,000 | 3,655,000 | 0
Hill Hire contract termination [Member] |  |  |  |
Restructuring and Other Charges (Textual) [Abstract] |  |  |  |
Restructuring and other charges (recoveries), net | 1,000,000 |  |  |

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- Definition The aggregate amount provided for estimated restructuring charges, asset impairments and other charges during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items). + References No definition available. + Details
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- Details
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- Definition Restructuring charges gross. + References No definition available. + Details
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- Definition The number of positions eliminated during the period as a result of restructuring activities. + References No definition available. + Details
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