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Loans and Allowance for Credit Losses (Narrative) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) contract | Dec. 31, 2019 USD ($) contract
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and leases receivable, no longer reported as related party | $ 15,000 |
Financing receivable, modifications, post-modification recorded investment | $ 1,506 | $ 3,650
Financing receivable, modifications, number of contracts | contract | 1 | 4
Financing receivable, recorded investment, nonaccrual status | $ 5,455 | $ 10,590
Mortgage loans in process of foreclosure, amount | 0 | 23
Loans and leases receivable, net amount, total | 1,440,368 | 1,238,147
Loans | 1,454,256 | 1,248,654
Financing receivable origination fee, net | 622 | 1,800
Deferrals Of Principal And Or Interest On Outstanding Loan Balances | 221,100 |
Deferred Loan Balances | $ 34,900 |
Other real estate owned, net |  | $ 74
Allowance from loan losses, as a percentage of total loans | 0.95% | 0.84%
Allowance from loan losses excluding PPP loans, as a percentage of total loans | 1.04% |
Small Business Administration (SBA), CARES Act, Paycheck Protection Program [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Financing Receivable, Amount of Loans Authorized | $ 122,900 |
Directors, Associates and Policy Making Officers [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans and leases receivable, related parties | 3,700 | $ 18,800
Loans and leases receivable, related parties, additions | 701 | 15,700
Loans and leases receivable, related parties, proceeds | 776 | 8,600
Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Financing receivable, modifications, post-modification recorded investment |  | $ 2,119
Financing receivable, modifications, number of contracts | contract |  | 3
Financing receivable, recorded investment, nonaccrual status | 1,585 | $ 2,475
Loans | 443,542 | 442,506
Other real estate owned, net | 0 | 0
Consumer Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 28 |
Loans | 31,466 | 17,737
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 Discount | 52,300 | 79,200
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financing Receivable, Related Discount | 754 | 1,100
Pass Performing [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 1,211,331 | 1,042,408
Pass Performing [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 401,494 | 404,500
Pass Performing [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 31,221 | 17,347
Pass Watch [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 219,283 | 177,994
Pass Watch [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 36,759 | 29,223
Pass Watch [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 215 | 383
Special Mention [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 0 | 0
Loans | 11,388 | 13,523
Special Mention [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 2,946 | 5,549
Special Mention [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans |  | 2
Substandard [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Financing receivable, recorded investment, nonaccrual status | 5,500 | 10,600
Loans | 12,254 | 14,729
Substandard [Member] | Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 2,343 | 3,234
Substandard [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | $ 30 | $ 5

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