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Loans and Allowance for Credit Losses (Financing Receivable Credit Quality Indicators) (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | $ 1,156,884 | $ 1,093,514
Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 10,056 | 12,184
Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 15,670 | 17,231
Performing [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 932,220 | 864,162
Watch [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 198,938 | 199,937
Commercial and Residential Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 137,318 | 125,746
Commercial and Residential Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 3,236 | 6,236
Commercial and Residential Real Estate Portfolio Segment [Member] | Performing [Member] | Construction Loans [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 102,435 | 88,836
Commercial and Residential Real Estate Portfolio Segment [Member] | Watch [Member] | Construction Loans [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 31,647 | 30,674
Residential Portfolio Segment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 407,278 | 399,190
Residential Portfolio Segment [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 3,934 | 4,456
Residential Portfolio Segment [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 4,083 | 4,186
Residential Portfolio Segment [Member] | Performing [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 363,423 | 355,575
Residential Portfolio Segment [Member] | Watch [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 35,838 | 34,973
Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 497,707 | 464,887
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 5,474 | 7,420
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 7,973 | 6,375
Commercial Real Estate Portfolio Segment [Member] | Performing [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 377,521 | 342,051
Commercial Real Estate Portfolio Segment [Member] | Watch [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 106,739 | 109,041
Commercial Portfolio Segment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 108,229 | 97,284
Commercial Portfolio Segment [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 648 | 308
Commercial Portfolio Segment [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 375 | 434
Commercial Portfolio Segment [Member] | Performing [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 83,047 | 72,440
Commercial Portfolio Segment [Member] | Watch [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 24,159 | 24,102
Consumer Portfolio Segment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 6,352 | 6,407
Consumer Portfolio Segment [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 3 |
Consumer Portfolio Segment [Member] | Performing [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | 5,794 | 5,260
Consumer Portfolio Segment [Member] | Watch [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loan Risk Rating | $ 555 | $ 1,147

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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=82891408&loc=d3e4428-111522 + Details
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