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Loans and Allowance for Loan Losses (Details 3) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
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Categories of impaired loans |  |
Non-accrual loans | $ 34,233 | $ 46,403
Troubled debt restructurings continuing to accrue interest | 7,967 | 7,217
Total impaired loans | $ 42,200 | $ 53,620

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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524 + Details
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