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Allowance for Loan Losses - Commercial and commercial real estate loan portfolios (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | $ 985,249 | $ 972,095
Paycheck Protection Program (PPP) |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 67,253 | 58,344
Commercial loans secured by owner occupied real estate [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 95,357 | 95,486
Commercial loans secured by non-owner occupied real estate |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 407,432 | 400,751
Commercial |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 713,845 | 705,743
Commercial | Commercial and Industrial Loan [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 143,803 | 151,162
Commercial | Paycheck Protection Program (PPP) |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 67,253 | 58,344
Commercial | Commercial loans secured by owner occupied real estate [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 95,357 | 95,486
Commercial | Commercial loans secured by non-owner occupied real estate |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 407,432 | 400,751
Commercial | Pass |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 664,735 | 656,534
Commercial | Pass | Commercial and Industrial Loan [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 126,834 | 134,186
Commercial | Pass | Paycheck Protection Program (PPP) |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 67,253 | 58,344
Commercial | Pass | Commercial loans secured by owner occupied real estate [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 93,296 | 92,189
Commercial | Pass | Commercial loans secured by non-owner occupied real estate |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 377,352 | 371,815
Commercial | Special Mention |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 38,453 | 39,856
Commercial | Special Mention | Commercial and Industrial Loan [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 12,401 | 13,722
Commercial | Special Mention | Commercial loans secured by owner occupied real estate [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 928 | 2,154
Commercial | Special Mention | Commercial loans secured by non-owner occupied real estate |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 25,124 | 23,980
Commercial | Substandard [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 8,909 | 9,345
Commercial | Substandard [Member] | Commercial and Industrial Loan [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 2,828 | 3,254
Commercial | Substandard [Member] | Commercial loans secured by owner occupied real estate [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 1,133 | 1,143
Commercial | Substandard [Member] | Commercial loans secured by non-owner occupied real estate |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 4,948 | 4,948
Commercial | Doubtful [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 1,748 | 8
Commercial | Doubtful [Member] | Commercial and Industrial Loan [Member] |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 1,740 |
Commercial | Doubtful [Member] | Commercial loans secured by non-owner occupied real estate |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | 8 | 8
Paycheck Protection Program (PPP) |  |
Loan portfolio summarized by the aggregate Pass and the criticized categories of Special Mention, Substandard and Doubtful within the internal risk rating system |  |
Loan portfolio | $ 67,253 | $ 58,344

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