v2.4.0.8

Employee Compensation Plans - Additional Information (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2008
Compensation Related Costs [Abstract] |  |  |  |
Percentage of compensation employees could elect to contribute prior to 2009 maximum |  |  |  | 17.00%
Percentage of compensation employees could elect to contribute prior to 2009 minimum |  |  |  | 2.00%
Maximum percentage of contribution by employer into compensation plan prior to 2009 |  |  |  | 3.00%
Percentage of employee may elect to contribute limited to maximum annual amount | 75.00% |  |  |
Percentage of deferred earnings for which the company matches contribution one dollar for each dollar | 1.00% |  |  |
Percentage of matching contribution for each dollar of deferred earnings above 1% for additional subsequent earnings of 5% | 50.00% |  |  |
Percentage of subsequent deferred earnings | 5.00% |  |  |
Fully vested contribution period | 2 years |  |  |
Contribution made by company to its profit sharing plan | $ 2,700,000 | $ 2,500,000 | $ 2,300,000 |
Percentage of base annual salary deferred by employees | 75.00% |  |  |
Percentage of annual bonus deferred by employees | 100.00% |  |  |
Increased percentage of matching contribution to align with retirement plan match | 3.50% | 3.50% | 3.50% |
Deferred compensation plans expense excluding participant contributions | 2,900,000 | 200,000 | 2,100,000 |
Total long term deferred compensation liability | 29,454,000 | 23,702,000 |  |
Value of the assets in the rabbi trust | 24,267,000 | 20,511,000 |  |
Expenses relating to international deferred compensation plans | $ 7,200,000 | $ 4,900,000 | $ 3,400,000 |

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- Definition Deferred compensation plan excluding contribution expenses. + References No definition available. + Details
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- Definition Expenses relating to international deferred compensation plans. + References No definition available. + Details
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- Definition Maximum percentage of contribution by employer into compensation plan. + References No definition available. + Details
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- Definition Percentage of annual bonus deferred by employees. + References No definition available. + Details
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- Definition Percentage of base annual salary deferred by employees. + References No definition available. + Details
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- Definition Percentage of increase in matching contribution to align with retirement plan match. + References No definition available. + Details
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- Details
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
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