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Loans and Leases (Changes In Carrying Value Of Acquired Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2012 Impaired At Acquisition Date | Sep. 30, 2011 Impaired At Acquisition Date | Sep. 30, 2012 All Other Acquired Loans | Sep. 30, 2011 All Other Acquired Loans | Sep. 30, 2012 Loans on the Cost Recovery Method | Dec. 31, 2011 Loans on the Cost Recovery Method | Sep. 30, 2011 Loans on the Cost Recovery Method
Carrying Value of Acquired Impaired Loans [Roll Forward] |  |  |  |  |  |  |
Balance, January 1 | $ 458,305 | $ 330,705 | $ 1,903,847 | $ 1,676,747 |  | $ 200,819 | $ 298,071
Fair value of acquired loans covered by loss share agreements | 0 | 303,713 | 0 | 777,800 |  |  |
Reductions for repayments, foreclosures and changes in carrying value, net of accretion | (167,581) | (134,713) | (297,474) | (396,802) |  |  |
Balance, September 30 | 290,724 | 499,705 | 1,606,373 | 2,057,745 | 66,087 | 200,819 | 298,071
Outstanding principal balance at September 30 | 1,077,975 | 1,943,770 | 2,253,660 | 2,705,324 |  |  |
Reduction in acquired loans |  |  |  |  | $ 65,615 |  |

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- Definition Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 9 -Section 03 -Paragraph 7 -Subparagraph d Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5212-111524 + Details
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