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Loans and Allowance for Loan Losses - Components of loans and associated allowance (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | --- | --- | --- | --- | ---
Loans and Allowance for Loan Losses |  |  |  |  |  |
Recorded Investment, Individually Evaluated | $ 5,157 |  | $ 6,560 |  |  |
Recorded Investment, Collectively Evaluated | 1,680,930 |  | 1,695,290 |  |  |
Loans and Leases Receivable, Gross, Total | 1,686,087 |  | 1,701,850 |  |  |
Allowance Allocation, Individually Evaluated | 2,107 |  | 2,538 |  |  |
Allowance Allocation, Collectively Evaluated | 17,238 |  | 18,459 |  |  |
Allowance Allocation, Unallocated | 3,639 |  | 1,177 |  |  |
Loans and Leases Receivable, Allowance, Total | 22,984 | $ 21,246 | 22,174 | $ 21,012 | $ 19,869 | $ 16,564
Commercial |  |  |  |  |  |
Loans and Allowance for Loan Losses |  |  |  |  |  |
Recorded Investment, Individually Evaluated | 3,993 |  | 5,629 |  |  |
Recorded Investment, Collectively Evaluated | 947,464 |  | 964,005 |  |  |
Loans and Leases Receivable, Gross, Total | 951,457 |  | 969,634 |  |  |
Allowance Allocation, Individually Evaluated | 1,781 |  | 2,514 |  |  |
Allowance Allocation, Collectively Evaluated | 15,274 |  | 16,142 |  |  |
Loans and Leases Receivable, Allowance, Total | 17,055 | 17,782 | 18,656 | 17,890 | 16,897 | 12,841
Commercial | Commercial and industrial |  |  |  |  |  |
Loans and Allowance for Loan Losses |  |  |  |  |  |
Recorded Investment, Individually Evaluated | 2,513 |  | 3,945 |  |  |
Recorded Investment, Collectively Evaluated | 482,670 |  | 506,761 |  |  |
Loans and Leases Receivable, Gross, Total | 485,183 |  | 510,706 |  |  |
Allowance Allocation, Individually Evaluated | 1,429 |  | 2,059 |  |  |
Allowance Allocation, Collectively Evaluated | 9,517 |  | 10,068 |  |  |
Loans and Leases Receivable, Allowance, Total | 10,946 | 11,694 | 12,127 | 11,178 | 10,024 | 7,589
Commercial | Real estate construction |  |  |  |  |  |
Loans and Allowance for Loan Losses |  |  |  |  |  |
Recorded Investment, Collectively Evaluated | 21,674 |  | 18,965 |  |  |
Loans and Leases Receivable, Gross, Total | 21,674 |  | 18,965 |  |  |
Allowance Allocation, Collectively Evaluated | 348 |  | 250 |  |  |
Loans and Leases Receivable, Allowance, Total | 348 | 323 | 250 | 286 | 395 | 343
Commercial | Commercial real estate |  |  |  |  |  |
Loans and Allowance for Loan Losses |  |  |  |  |  |
Recorded Investment, Individually Evaluated | 1,480 |  | 1,684 |  |  |
Recorded Investment, Collectively Evaluated | 443,120 |  | 438,279 |  |  |
Loans and Leases Receivable, Gross, Total | 444,600 |  | 439,963 |  |  |
Allowance Allocation, Individually Evaluated | 352 |  | 455 |  |  |
Allowance Allocation, Collectively Evaluated | 5,409 |  | 5,824 |  |  |
Loans and Leases Receivable, Allowance, Total | 5,761 | 5,765 | 6,279 | 6,426 | 6,478 | 4,909
Consumer |  |  |  |  |  |
Loans and Allowance for Loan Losses |  |  |  |  |  |
Recorded Investment, Individually Evaluated | 1,164 |  | 931 |  |  |
Recorded Investment, Collectively Evaluated | 733,466 |  | 731,285 |  |  |
Loans and Leases Receivable, Gross, Total | 734,630 |  | 732,216 |  |  |
Allowance Allocation, Individually Evaluated | 326 |  | 24 |  |  |
Allowance Allocation, Collectively Evaluated | 1,964 |  | 2,317 |  |  |
Loans and Leases Receivable, Allowance, Total | 2,290 | 2,245 | 2,341 | 2,599 | 2,799 | 2,812
Consumer | Residential | Real estate first mortgage |  |  |  |  |  |
Loans and Allowance for Loan Losses |  |  |  |  |  |
Recorded Investment, Individually Evaluated | 355 |  | 352 |  |  |
Recorded Investment, Collectively Evaluated | 459,408 |  | 447,791 |  |  |
Loans and Leases Receivable, Gross, Total | 459,763 |  | 448,143 |  |  |
Allowance Allocation, Collectively Evaluated | 1,016 |  | 1,156 |  |  |
Loans and Leases Receivable, Allowance, Total | 1,016 | 1,155 | 1,156 | 1,344 | 1,486 | 1,411
Consumer | Residential | Real estate junior lien |  |  |  |  |  |
Loans and Allowance for Loan Losses |  |  |  |  |  |
Recorded Investment, Individually Evaluated | 804 |  | 559 |  |  |
Recorded Investment, Collectively Evaluated | 181,712 |  | 188,296 |  |  |
Loans and Leases Receivable, Gross, Total | 182,516 |  | 188,855 |  |  |
Allowance Allocation, Individually Evaluated | 324 |  | 4 |  |  |
Allowance Allocation, Collectively Evaluated | 572 |  | 801 |  |  |
Loans and Leases Receivable, Allowance, Total | 896 | 710 | 805 | 814 | 830 | 902
Consumer | Other revolving and installment |  |  |  |  |  |
Loans and Allowance for Loan Losses |  |  |  |  |  |
Recorded Investment, Individually Evaluated | 5 |  | 20 |  |  |
Recorded Investment, Collectively Evaluated | 92,346 |  | 95,198 |  |  |
Loans and Leases Receivable, Gross, Total | 92,351 |  | 95,218 |  |  |
Allowance Allocation, Individually Evaluated | 2 |  | 20 |  |  |
Allowance Allocation, Collectively Evaluated | 376 |  | 360 |  |  |
Loans and Leases Receivable, Allowance, Total | $ 378 | $ 380 | $ 380 | $ 441 | $ 483 | $ 499

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