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Non-performing Loans and Impaired Loans - Additional Information (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 USD ($) consecutivePayment | Dec. 31, 2019 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Non-accrual loans | $ 18,281,000 | $ 15,679,000
Non-performing TDRs | $ 3,400,000 |
Restructured loan returned to accruing status number of Consecutive Payments of loan | consecutivePayment | 6 |
Restructured loan reported in TDRs | $ 5,475,000 | 5,360,000
Specific reserves allocated to troubled debt restructuring | 435,000 |
TDR loans | 3,360,000 | 2,006,000
Commercial |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Non-accrual loans | 7,017,000 | 4,782,000
Restructured loan reported in TDRs | 2,551,000 | 2,565,000
TDR loans | 2,412,000 | 1,081,000
Commercial | Owner occupied real estate |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Non-accrual loans | 5,512,000 | 2,424,000
Restructured loan reported in TDRs | 768,000 | 768,000
Non-accrual loans | 18,300,000 | 15,700,000
TDR loans | 629,000 | $ 629,000
CARES Act |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Restructured loan reported in TDRs | 56,600,000 |
Performing |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Restructured loan reported in TDRs | $ 3,400,000 |
Number TDRs returned to accrual status | consecutivePayment | 1 |
Loans Purchased With Evidence of Credit Deterioration |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Non-accrual loans | $ 3,500,000 |
Non-performing TDRs | 101,000 |
Minimum |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans with an aggregate credit exposure | $ 1,000,000 |
Loans classified as TDR after a period | 90 days |
Minimum | Good Pass |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of consecutive years of profit Unaudited Financial Information for Good Pass Rating | 5 years |
Number of years of Satisfactory Relationship with bank for Good Pass Rating | 5 years |
Minimum | Satisfactory Pass |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Number of consecutive years of profit for Good Pass Rating | 3 years |
Maximum |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans with an aggregate credit exposure | $ 3,500,000 |
Loans classified as TDR after a period | 120 days |
Minimum number of years of Satisfactory Repayment required for Satisfactory Pass Rating | 2 years |

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