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Loans and Allowance for Credit Losses (Narrative) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 USD ($) property | Dec. 31, 2016 USD ($) property
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | $ 891,864 | $ 871,525
Allowance period increase due to revised methodology used in calculation | 1,100 |
Allowance period adjusted amoung due to revised methodology used in calculation | 250 |
Other real estate owned, net | 2,354 | 2,477
Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 331,191 | 325,768
Other real estate owned, net | $ 92 | $ 92
Number of properties in other real estate owned | property | 3 | 3
Consumer Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | $ 6,595 | $ 6,639
Mortgage loans in process of foreclosure, amount | 410 | 687
Special Mention [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 27,399 | 22,637
Special Mention [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 6,496 | 6,646
Special Mention [Member] | Impaired Nonaccrual Loans [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 0 | 0
Substandard [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 22,188 | 22,691
Substandard [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 7,234 | 6,880
Substandard [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 99 | 99
Substandard [Member] | Impaired Nonaccrual Loans [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 8,700 | 9,000
Doubtful [Member] | Impaired Nonaccrual Loans [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | $ 0 | $ 0

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- Definition Amount of other addition (reduction) in allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522 + Details
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