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Profit Sharing Plan (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Deferred Compensation Arrangements [Abstract] |  |  |
Maximum percentage of compensation employee is allowed to contribute | 15.00% |  |
Matching contributions | $ 8.1 | $ 7.2 | $ 7.2
Value of shares authorized to repurchase for ESOP allocation | $ 0 |  |

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- Definition Maximum percentage of compensation employee is allowed to contribute to the Plan. + References No definition available. + Details
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- Details
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- Definition The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement. + References No definition available. + Details
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- Definition An entity will typically disclose the amount of any repurchase obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 + Details
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