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Loans Loan Categories and Past Due Loans(Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016 | Mar. 31, 2016
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Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | $ 9,220 | $ 11,899 | $ 10,158
Current Loans | 1,801,585 | 1,741,369 | 1,612,570
Total Loans | 1,810,805 | 1,753,268 | 1,622,728
Loans 90 or More Days Past Due and Still Accruing Interest | 0 | 1,201 | 552
Nonaccrual Loans | 4,273 | 4,193 | 7,445
Financing Receivables, 30 to 59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 6,092 | 8,194 | 5,457
Financing Receivables, 60 to 89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 1,838 | 1,069 | 552
Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 1,290 | 2,636 | 4,149
Commercial |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 318 | 289 | 333
Current Loans | 118,524 | 104,866 | 105,744
Total Loans | 118,842 | 105,155 | 106,077
Loans 90 or More Days Past Due and Still Accruing Interest | 0 | 0 | 13
Nonaccrual Loans | 144 | 155 | 214
Commercial | Financing Receivables, 30 to 59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 189 | 112 | 129
Commercial | Financing Receivables, 60 to 89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 9 | 29 | 6
Commercial | Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 120 | 148 | 198
Commercial Real Estate Portfolio Segment |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 0 | 121 | 1,469
Current Loans | 435,316 | 431,525 | 402,376
Total Loans | 435,316 | 431,646 | 403,845
Loans 90 or More Days Past Due and Still Accruing Interest | 0 | 0 | 0
Nonaccrual Loans | 870 | 875 | 4,055
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 | 0 | 121 | 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 | 0 | 0 | 1,469
Consumer Loans Financing |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 5,362 | 7,004 | 4,410
Current Loans | 546,601 | 530,357 | 485,099
Total Loans | 551,963 | 537,361 | 489,509
Loans 90 or More Days Past Due and Still Accruing Interest | 0 | 158 | 42
Nonaccrual Loans | 656 | 589 | 505
Consumer Loans Financing | Financing Receivables, 30 to 59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 3,882 | 5,593 | 3,503
Consumer Loans Financing | Financing Receivables, 60 to 89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 1,145 | 898 | 517
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 | 335 | 513 | 390
Residential |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 3,540 | 4,485 | 3,946
Current Loans | 701,144 | 674,621 | 619,351
Total Loans | 704,684 | 679,106 | 623,297
Loans 90 or More Days Past Due and Still Accruing Interest | 0 | 1,043 | 497
Nonaccrual Loans | 2,603 | 2,574 | 2,671
Residential | Financing Receivables, 30 to 59 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 2,021 | 2,368 | 1,825
Residential | Financing Receivables, 60 to 89 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | 684 | 142 | 29
Residential | Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |
Financing Receivable, Recorded Investment, Aging [Abstract] |  |  |
Financing Receivable, Recorded Investment, Past Due | $ 835 | $ 1,975 | $ 2,092

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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 -Glossary Recorded Investment -URI http://asc.fasb.org/extlink&oid=65880944 Reference 2: 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=66008989&loc=d3e5111-111524 + Details
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