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Loans and Allowance for Loan Losses (Details 2) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011 | Sep. 30, 2011
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Summary of amounts included in nonaccrual loans segregated by class of loans |  |  |
Nonaccrual loans, Total | $ 22,101 | $ 21,187 | $ 24,088
Non-residential real estate [Member] |  |  |
Summary of amounts included in nonaccrual loans segregated by class of loans |  |  |
Nonaccrual loans, Total | 9,324 |  |
Residential real estate [Member] |  |  |
Summary of amounts included in nonaccrual loans segregated by class of loans |  |  |
Nonaccrual loans, Total | 4,179 |  |
Non-consumer non-real estate [Member] |  |  |
Summary of amounts included in nonaccrual loans segregated by class of loans |  |  |
Nonaccrual loans, Total | 2,527 |  |
Consumer non-real estate [Member] |  |  |
Summary of amounts included in nonaccrual loans segregated by class of loans |  |  |
Nonaccrual loans, Total | 138 |  |
Other loans [Member] |  |  |
Summary of amounts included in nonaccrual loans segregated by class of loans |  |  |
Nonaccrual loans, Total | 2,221 |  |
Acquired loans [Member] |  |  |
Summary of amounts included in nonaccrual loans segregated by class of loans |  |  |
Nonaccrual loans, Total | $ 3,712 |  |

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- Details
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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 + Details
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