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Loans Loans Modified in Trouble Debt Restructurings (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans | 4 | 5 | 5
Pre-Modification Outstanding Recorded Investment | $ 39 | $ 934 | $ 610
Post-Modification Outstanding Recorded Investment | $ 39 | $ 934 | $ 610
Subsequent Default, Number of Contracts | 0 | 0 | 0
Subsequent Default, Recorded Investment | $ 0 | $ 0 | $ 0
Commitments to lend additional funds to modified loans | $ 0 | $ 0 | $ 0
Commercial [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans | 0 | 0 | 0
Pre-Modification Outstanding Recorded Investment | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | $ 0 | $ 0 | $ 0
Subsequent Default, Number of Contracts | 0 | 0 | 0
Subsequent Default, Recorded Investment | $ 0 | $ 0 | $ 0
Commitments to lend additional funds to modified loans | $ 0 | $ 0 | $ 0
Commercial Real Estate [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans | 0 | 1 | 0
Pre-Modification Outstanding Recorded Investment | $ 0 | $ 883 | $ 0
Post-Modification Outstanding Recorded Investment | $ 0 | $ 883 | $ 0
Subsequent Default, Number of Contracts | 0 | 0 | 0
Subsequent Default, Recorded Investment | $ 0 | $ 0 | $ 0
Commitments to lend additional funds to modified loans | $ 0 | $ 0 | $ 0
Other Consumer [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans | 4 | 4 | 4
Pre-Modification Outstanding Recorded Investment | $ 39 | $ 51 | $ 36
Post-Modification Outstanding Recorded Investment | $ 39 | $ 51 | $ 36
Subsequent Default, Number of Contracts | 0 | 0 | 0
Subsequent Default, Recorded Investment | $ 0 | $ 0 | $ 0
Commitments to lend additional funds to modified loans | $ 0 | $ 0 | $ 0
Residential Portfolio Segment [Member] |  |  |
Financing Receivable, Modifications [Line Items] |  |  |
Number of Loans | 0 | 0 | 1
Pre-Modification Outstanding Recorded Investment | $ 0 | $ 0 | $ 574
Post-Modification Outstanding Recorded Investment | $ 0 | $ 0 | $ 574
Subsequent Default, Number of Contracts | 0 | 0 | 0
Subsequent Default, Recorded Investment | $ 0 | $ 0 | $ 0
Commitments to lend additional funds to modified loans | $ 0 | $ 0 | $ 0

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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 Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554 + Details
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