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Loans and Allowance for Credit Losses (Narrative) (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Deferred fees | $ 850 | $ 789
Discounts On Acquired Loans | 1,300 | 1,400
Financing receivable, recorded investment, doubtful | 0 | 0
Financing receivable, recorded investment, nonaccrual status | 15,360 | 16,655
Loans and leases receivable, net amount, total | 1,201,298 | 1,185,012
Loans | 1,211,716 | 1,195,355
Other real estate owned, net | 979 | 1,222
Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 2,984 | 4,099
Loans | 427,023 | 429,560
Consumer Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Mortgage loans in process of foreclosure, amount |  | 949
Loans | 7,221 | 7,274
Northwest Bank Branches [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financing Receivable Net of Allowance | 88,900 | 92,800
Pass Performing [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 990,777 | 967,331
Pass Performing [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 386,816 | 386,553
Pass Performing [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 6,770 | 6,805
Pass Watch [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 185,618 | 194,540
Pass Watch [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 31,783 | 33,739
Pass Watch [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 448 | 466
Special Mention [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 12,888 | 8,926
Special Mention [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 4,245 | 3,769
Substandard [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 22,433 | 24,558
Substandard [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 4,179 | 5,499
Substandard [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | $ 3 | $ 3

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