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Subsequent Events (Details) (USD $) |  | 0 Months Ended
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Apr. 29, 2014 Dividend Declared Class A common stock | Apr. 29, 2014 Dividend Declared Class B common stock | May 15, 2014 Subsequent event Minimum | May 15, 2014 Subsequent event Maximum
Subsequent events |  |  |  |
Quarterly dividend declared (in dollars per share) | $ 0.15 | $ 0.15 |  |
Term for settlement of liabilities to plan participants under SERP |  |  | 12 months | 24 months

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- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Details
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- Definition Represents the term for settlement of liabilities to plan participants following termination date under Supplemental Employees Retirement Plan (the SERP). + References No definition available. + Details
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