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Loans, Allowance for Credit Losses, and Asset Quality Information (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2021 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020 | Mar. 31, 2020 | Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
PPP loans approved and funded |  | $ 155,500 |  | $ 240,500 |  |
Unamortized net deferred loan fees |  | 4,782 | $ 6,848 | 3,698 |  |
Unamortized discount on loans acquired |  | 5,300 |  |  |  |
Payments that exceeded carrying amount of PCI loans |  |  | 414 |  |  |
Loan discount accretion income |  |  | 341 |  |  |
Additional loan interest income |  |  | 59 |  |  |
Recovery |  |  | 14 |  |  |
Interest income on restructured loans | $ 1,100 |  |  |  |  |
Loans, gross |  | 4,786,846 | 4,776,911 | 4,735,013 |  |
Allowance for loan losses | 65,849 | 65,022 | 42,342 | 52,388 | $ 24,498 | $ 21,398
Special Mention Loans |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans, gross |  | 39,600 |  | 61,260 |  |
Classified |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans, gross |  | 56,200 |  |  |  |
Consumer loans |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans, gross |  | 53,928 | 51,161 | 53,955 |  |
Allowance for loan losses | 2,297 | 2,363 | $ 1,223 | 1,478 | $ 1,015 | $ 972
Consumer loans | Special Mention Loans |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans, gross |  | 3 |  |  |  |
Consumer loans | Classified |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Loans, gross |  | $ 346 |  |  |  |
Real Estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Threshold percentage to write-off nonaccrual loans |  | 90.00% |  |  |  |
Hotel | Minimum |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Threshold percentage to write-off nonaccrual loans |  | 10.00% |  |  |  |
Hotel | Maximum |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Threshold percentage to write-off nonaccrual loans |  | 25.00% |  |  |  |
Non Real Estate |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Threshold percentage to write-off nonaccrual loans |  | 75.00% |  |  |  |
Real estate – mortgage – residential (1-4 family) first mortgages |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Presold mortgages in process of settlement |  | $ 2,600 |  | 1,900 |  |
Unfunded Loan Commitment |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Allowance for loan losses | $ 582 | 10,025 |  | 600 |  |
SBA PPP loans |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Unamortized net deferred loan fees |  | 6,200 |  | 6,000 |  |
SBA Loans |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Remaining unaccreted discount |  | $ 7,000 |  | 7,300 |  |
Purchased Non-Impaired Loans |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |
Remaining unaccreted discount |  |  |  | $ 7,900 |  |

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