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Loans (Details 3) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Allowance for loan losses |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 12,315 |  |  |  | $ 10,852 | $ 12,315 | $ 10,852 | $ 8,978
Provision for loan losses | $ 525 | $ 950 | $ 750 | 775 | $ 400 | $ 950 | $ 950 | 1,050 | 3,000 | 3,350 | 3,870
Loans charged off |  |  |  |  |  |  |  |  | (2,856) | (3,286) | (2,801)
Recoveries |  |  |  |  |  |  |  |  | 1,133 | 1,399 | 805
Ending balance | 13,592 |  |  |  | 12,315 |  |  |  | 13,592 | 12,315 | 10,852
Commercial real estate |  |  |  |  |  |  |  |  |  |  |
Allowance for loan losses |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 4,260 |  |  |  | 3,577 | 4,260 | 3,577 | 3,127
Provision for loan losses |  |  |  |  |  |  |  |  | 650 | 298 | 784
Loans charged off |  |  |  |  |  |  |  |  | 0 | (207) | (349)
Recoveries |  |  |  |  |  |  |  |  | 126 | 592 | 15
Ending balance | 5,036 |  |  |  | 4,260 |  |  |  | 5,036 | 4,260 | 3,577
Commercial |  |  |  |  |  |  |  |  |  |  |
Allowance for loan losses |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 2,011 |  |  |  | 1,874 | 2,011 | 1,874 | 1,373
Provision for loan losses |  |  |  |  |  |  |  |  | 112 | 446 | 701
Loans charged off |  |  |  |  |  |  |  |  | (220) | (375) | (245)
Recoveries |  |  |  |  |  |  |  |  | 190 | 66 | 45
Ending balance | 2,093 |  |  |  | 2,011 |  |  |  | 2,093 | 2,011 | 1,874
Residential real estate |  |  |  |  |  |  |  |  |  |  |
Allowance for loan losses |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 2,521 |  |  |  | 2,205 | 2,521 | 2,205 | 1,845
Provision for loan losses |  |  |  |  |  |  |  |  | 486 | 378 | 436
Loans charged off |  |  |  |  |  |  |  |  | (318) | (162) | (188)
Recoveries |  |  |  |  |  |  |  |  | 148 | 100 | 112
Ending balance | 2,837 |  |  |  | 2,521 |  |  |  | 2,837 | 2,521 | 2,205
Consumer |  |  |  |  |  |  |  |  |  |  |
Allowance for loan losses |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 2,848 |  |  |  | 2,766 | 2,848 | 2,766 | 2,160
Provision for loan losses |  |  |  |  |  |  |  |  | 1,764 | 1,983 | 1,992
Loans charged off |  |  |  |  |  |  |  |  | (2,318) | (2,542) | (2,019)
Recoveries |  |  |  |  |  |  |  |  | 669 | 641 | 633
Ending balance | 2,963 |  |  |  | 2,848 |  |  |  | 2,963 | 2,848 | 2,766
Unallocated |  |  |  |  |  |  |  |  |  |  |
Allowance for loan losses |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 675 |  |  |  | $ 430 | 675 | 430 | 473
Provision for loan losses |  |  |  |  |  |  |  |  | (12) | 245 | (43)
Loans charged off |  |  |  |  |  |  |  |  | 0 | 0 | 0
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 | 0
Ending balance | $ 663 |  |  |  | $ 675 |  |  |  | $ 663 | $ 675 | $ 430

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