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Loans (Details 4) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment | $ 61 | $ 61 |  |
Collectively evaluated for impairment | 14,801 | 14,320 |  |
Acquired loans collectively evaluated for impairment | 90 | 106 |  |
Total ending allowance balance | 14,952 | 14,487 | $ 13,777 | $ 13,592
Loans: |  |  |  |
Loans individually evaluated for impairment | 4,383 | 4,253 |  |
Loans collectively evaluated for impairment | 1,620,870 | 1,614,267 |  |
Acquired loans | 350,284 | 192,329 |  |
Acquired with deteriorated credit quality | 1,219,906 | 1,097,240 |  |
Loans | 1,976,582 | 1,811,539 |  |
Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality | 0 | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality | 1,045 | 690 |  |
Commercial real estate |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 6,516 | 5,790 |  |
Acquired loans collectively evaluated for impairment | 45 | 53 |  |
Total ending allowance balance | 6,561 | 5,843 | 5,195 | 5,036
Loans: |  |  |  |
Loans individually evaluated for impairment | 549 | 561 |  |
Loans collectively evaluated for impairment | 711,923 | 702,226 |  |
Acquired loans | 175,770 | 86,431 |  |
Loans | 888,828 | 789,413 |  |
Commercial real estate | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality | 0 | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality | 586 | 195 |  |
Commercial |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment | 2 | 2 |  |
Collectively evaluated for impairment | 2,610 | 2,309 |  |
Acquired loans collectively evaluated for impairment | 9 | 12 |  |
Total ending allowance balance | 2,621 | 2,323 | 2,157 | 2,093
Loans: |  |  |  |
Loans individually evaluated for impairment | 211 | 205 |  |
Loans collectively evaluated for impairment | 294,190 | 290,017 |  |
Acquired loans | 36,218 | 17,110 |  |
Loans | 331,078 | 307,827 |  |
Commercial | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality | 0 | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality | 459 | 495 |  |
Residential real estate |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment | 59 | 59 |  |
Collectively evaluated for impairment | 2,818 | 2,777 |  |
Acquired loans collectively evaluated for impairment | 34 | 39 |  |
Total ending allowance balance | 2,911 | 2,875 | 2,813 | 2,837
Loans: |  |  |  |
Loans individually evaluated for impairment | 3,363 | 3,240 |  |
Loans collectively evaluated for impairment | 406,688 | 413,446 |  |
Acquired loans | 130,757 | 82,615 |  |
Loans | 540,808 | 499,301 |  |
Residential real estate | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality | 0 | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality | 0 | 0 |  |
Consumer |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 2,686 | 2,708 |  |
Acquired loans collectively evaluated for impairment | 2 | 2 |  |
Total ending allowance balance | 2,688 | 2,710 | 2,819 | 2,963
Loans: |  |  |  |
Loans individually evaluated for impairment | 260 | 247 |  |
Loans collectively evaluated for impairment | 208,069 | 208,578 |  |
Acquired loans | 7,539 | 6,173 |  |
Loans | 215,868 | 214,998 |  |
Consumer | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality | 0 | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality | 0 | 0 |  |
Unallocated |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Individually evaluated for impairment | 0 | 0 |  |
Collectively evaluated for impairment | 171 | 736 |  |
Acquired loans collectively evaluated for impairment | 0 | 0 |  |
Total ending allowance balance | 171 | 736 | $ 793 | $ 663
Loans: |  |  |  |
Loans individually evaluated for impairment | 0 | 0 |  |
Loans collectively evaluated for impairment | 0 | 0 |  |
Acquired loans | 0 | 0 |  |
Loans | 0 | 0 |  |
Unallocated | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |
Acquired with deteriorated credit quality | 0 | 0 |  |
Loans: |  |  |  |
Acquired with deteriorated credit quality | $ 0 | $ 0 |  |

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