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Loans and Allowance for Credit Losses (Troubled Debt Restructurings on Financing Receivables) (Details) $ in Thousands | 9 Months Ended
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Sep. 30, 2016 USD ($) contract | Sep. 30, 2015 USD ($) contract
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Number of contracts | contract | 4 | 10
Premodification outstanding recorded investment | $ 1,162 | $ 1,835
Postmodification outstanding recorded investment | $ 1,194 | 1,837
Related allowance |  | $ 19
Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Number of contracts | contract | 3 | 10
Premodification outstanding recorded investment | $ 667 | $ 1,835
Postmodification outstanding recorded investment | $ 699 | 1,837
Related allowance |  | $ 19
Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Number of contracts | contract | 1 |
Premodification outstanding recorded investment | $ 495 |
Postmodification outstanding recorded investment | $ 495 |

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- Definition Amount of allowance for credit losses related to loans that were modified and considered TDRs during the reporting period. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524 + Details
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- Definition Pre-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524 + Details
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- Details
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