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Securities Credit Impaired Debt Securities (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Sep. 30, 2013 | Sep. 30, 2013
Changes in the credit loss component of credit-impaired debt securities |  |
Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held | $ 757 | $ 1,257
Other Than Temporary Impairment Credit Losses Recognized In Earnings, Reductions, Securities Fully Written Down And Deemed Worthless | 0 | 500
Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held | $ 757 | $ 757

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- Definition The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27340-111563 + Details
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