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Loans (Details 4) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment |  | $ 436 |  |
Collectively evaluated for impairment |  | 21,526 |  |
Acquired loans collectively evaluated for impairment |  | 182 |  |
Total ending allowance balance | $ 24,935 | 22,144 | $ 14,952 | $ 14,487
Loans: |  |  |  |
Loans individually evaluated for impairment |  | 6,613 |  |
Loans collectively evaluated for impairment |  | 1,800,444 |  |
Acquired loans |  | 270,070 |  |
Acquired with deteriorated credit quality | 1,330,881 | 1,345,862 |  |
Loans | $ 2,037,404 | 2,078,044 |  |
Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality |  | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality |  | 917 |  |
Commercial real estate |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment |  | 0 |  |
Collectively evaluated for impairment |  | 10,400 |  |
Acquired loans collectively evaluated for impairment |  | 97 |  |
Total ending allowance balance |  | 10,497 | 6,561 | 5,843
Loans: |  |  |  |
Loans individually evaluated for impairment |  | 502 |  |
Loans collectively evaluated for impairment |  | 758,050 |  |
Acquired loans |  | 135,884 |  |
Loans |  | 894,950 |  |
Commercial real estate | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality |  | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality |  | 514 |  |
Commercial |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment |  | 357 |  |
Collectively evaluated for impairment |  | 4,546 |  |
Acquired loans collectively evaluated for impairment |  | 17 |  |
Total ending allowance balance |  | 4,920 | 2,621 | 2,323
Loans: |  |  |  |
Loans individually evaluated for impairment |  | 3,086 |  |
Loans collectively evaluated for impairment |  | 424,379 |  |
Acquired loans |  | 23,044 |  |
Loans |  | 450,912 |  |
Commercial | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality |  | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality |  | 403 |  |
Residential real estate |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment |  | 79 |  |
Collectively evaluated for impairment |  | 3,392 |  |
Acquired loans collectively evaluated for impairment |  | 65 |  |
Total ending allowance balance |  | 3,536 | 2,911 | 2,875
Loans: |  |  |  |
Loans individually evaluated for impairment |  | 2,836 |  |
Loans collectively evaluated for impairment |  | 414,568 |  |
Acquired loans |  | 105,936 |  |
Loans |  | 523,340 |  |
Residential real estate | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality |  | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality |  | 0 |  |
Consumer |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment |  | 0 |  |
Collectively evaluated for impairment |  | 2,520 |  |
Acquired loans collectively evaluated for impairment |  | 3 |  |
Total ending allowance balance |  | 2,523 | 2,688 | 2,710
Loans: |  |  |  |
Loans individually evaluated for impairment |  | 189 |  |
Loans collectively evaluated for impairment |  | 203,447 |  |
Acquired loans |  | 5,206 |  |
Loans |  | 208,842 |  |
Consumer | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality |  | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality |  | 0 |  |
Unallocated |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment |  | 0 |  |
Collectively evaluated for impairment |  | 668 |  |
Acquired loans collectively evaluated for impairment |  | 0 |  |
Total ending allowance balance |  | 668 | $ 171 | $ 736
Loans: |  |  |  |
Loans individually evaluated for impairment |  | 0 |  |
Loans collectively evaluated for impairment |  | 0 |  |
Acquired loans |  | 0 |  |
Loans |  | 0 |  |
Unallocated | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality |  | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality |  | $ 0 |  |

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