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Income Taxes (Details) (USD $) In Millions, unless otherwise specified | 9 Months Ended
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Sep. 30, 2013
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract] |
Increase in unrecognized tax benefit | $ 4.7

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- Definition The net amount of all increases and decreases in unrecognized tax benefits for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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