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Investment Securities (Narrative) (Details) (USD $) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012
Schedule of Investments [Line Items] |  |  |
Proceeds from Sale of Available-for-sale Securities, Total | $ 78,911,000 | $ 71,162,000 |
Reclassification Of Available For Sale Investment Securities To Held To Maturity At Fair Value | 75,700,000 |  |
Available-for-sale Securities, Gross Unrealized Gain, Total | 63,000 |  |
Available-for-sale Securities Pledged as Collateral | 84,700,000 |  | 96,100,000
Excess Subordination As Percentage Of Remainging Performing Collateral | 48.90% |  |
Increase (Decrease) in Trading Securities | $ 9,300,000 |  |

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- Definition Reclassification of available for sale investment securities to held to maturity at fair value. + References No definition available. + Details
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- Definition Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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