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Loans Loan Categories and Past Due Loans(Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2017
--- | --- | --- | ---
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | $ 8,298 | $ 12,708 | $ 9,220
Current Loans | 1,984,739 | 1,938,062 | 1,801,585
Total Loans | 1,993,037 | 1,950,770 | 1,810,805
Loans 90 or More Days Past Due and Still Accruing Interest | 0 | 319 | 0
Nonaccrual Loans | 4,470 | 5,526 | 4,273
Financing Receivables, 30 to 59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 5,585 | 8,124 | 6,092
Financing Receivables, 60 to 89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 1,292 | 1,743 | 1,838
Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 1,421 | 2,841 | 1,290
Commercial |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 146 | 257 | 318
Current Loans | 127,528 | 128,992 | 118,524
Total Loans | 127,674 | 129,249 | 118,842
Loans 90 or More Days Past Due and Still Accruing Interest | 0 | 0 | 0
Nonaccrual Loans | 652 | 588 | 144
Commercial | Financing Receivables, 30 to 59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 45 | 139 | 189
Commercial | Financing Receivables, 60 to 89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 60 | 19 | 9
Commercial | Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 41 | 99 | 120
Commercial Real Estate Portfolio Segment |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 963 | 807 | 0
Current Loans | 454,095 | 443,441 | 435,316
Total Loans | 455,058 | 444,248 | 435,316
Loans 90 or More Days Past Due and Still Accruing Interest | 0 | 0 | 0
Nonaccrual Loans | 807 | 1,530 | 870
Commercial Real Estate Portfolio Segment | Financing Receivables, 30 to 59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 156 | 0 | 0
Commercial Real Estate Portfolio Segment | Financing Receivables, 60 to 89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 0 | 0 | 0
Commercial Real Estate Portfolio Segment | Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 807 | 807 | 0
Consumer Loans Financing |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 4,676 | 7,619 | 5,362
Current Loans | 621,964 | 595,208 | 546,601
Total Loans | 626,640 | 602,827 | 551,963
Loans 90 or More Days Past Due and Still Accruing Interest | 0 | 6 | 0
Nonaccrual Loans | 441 | 653 | 656
Consumer Loans Financing | Financing Receivables, 30 to 59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 3,673 | 5,891 | 3,882
Consumer Loans Financing | Financing Receivables, 60 to 89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 751 | 1,215 | 1,145
Consumer Loans Financing | Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 252 | 513 | 335
Residential |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 2,513 | 4,025 | 3,540
Current Loans | 781,152 | 770,421 | 701,144
Total Loans | 783,665 | 774,446 | 704,684
Loans 90 or More Days Past Due and Still Accruing Interest | 0 | 313 | 0
Nonaccrual Loans | 2,570 | 2,755 | 2,603
Residential | Financing Receivables, 30 to 59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 1,711 | 2,094 | 2,021
Residential | Financing Receivables, 60 to 89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 481 | 509 | 684
Residential | Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | $ 321 | $ 1,422 | $ 835

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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + 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=84173941&loc=d3e5111-111524 + Details
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