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Loans and Allowance for Loan Losses - Past due aging analysis (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
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Past due aging analysis of loans |  |
Loans and Leases Receivable, Gross, Total | $ 2,034,197 | $ 1,721,279
Performing |  |
Past due aging analysis of loans |  |
Accruing Current | 2,025,699 | 1,711,189
Nonaccrual | 5,328 | 7,379
Loans and Leases Receivable, Gross, Total | 2,034,197 | 1,721,279
30 - 89 Days Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due | 3,170 | 2,263
90 Days or More Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due |  | 448
Commercial |  |
Past due aging analysis of loans |  |
Loans and Leases Receivable, Gross, Total | 1,344,652 | 1,000,225
Commercial | Performing |  |
Past due aging analysis of loans |  |
Accruing Current | 1,339,676 | 992,858
Nonaccrual | 4,314 | 6,302
Loans and Leases Receivable, Gross, Total | 1,344,652 | 1,000,225
Commercial | 30 - 89 Days Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due | 662 | 1,065
Commercial | Commercial and industrial |  |
Past due aging analysis of loans |  |
Loans and Leases Receivable, Gross, Total | 794,204 | 479,144
Commercial | Commercial and industrial | Performing |  |
Past due aging analysis of loans |  |
Accruing Current | 790,675 | 473,900
Nonaccrual | 2,867 | 4,862
Loans and Leases Receivable, Gross, Total | 794,204 | 479,144
Commercial | Commercial and industrial | 30 - 89 Days Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due | 662 | 382
Commercial | Real estate construction |  |
Past due aging analysis of loans |  |
Loans and Leases Receivable, Gross, Total | 31,344 | 26,378
Commercial | Real estate construction | Performing |  |
Past due aging analysis of loans |  |
Accruing Current | 31,344 | 26,251
Loans and Leases Receivable, Gross, Total | 31,344 | 26,378
Commercial | Real estate construction | 30 - 89 Days Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due |  | 127
Commercial | Commercial real estate |  |
Past due aging analysis of loans |  |
Loans and Leases Receivable, Gross, Total | 519,104 | 494,703
Commercial | Commercial real estate | Performing |  |
Past due aging analysis of loans |  |
Accruing Current | 517,657 | 492,707
Nonaccrual | 1,447 | 1,440
Loans and Leases Receivable, Gross, Total | 519,104 | 494,703
Commercial | Commercial real estate | 30 - 89 Days Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due |  | 556
Consumer |  |
Past due aging analysis of loans |  |
Loans and Leases Receivable, Gross, Total | 689,545 | 721,054
Consumer | Performing |  |
Past due aging analysis of loans |  |
Accruing Current | 686,023 | 718,331
Nonaccrual | 1,014 | 1,077
Loans and Leases Receivable, Gross, Total | 689,545 | 721,054
Consumer | 30 - 89 Days Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due | 2,508 | 1,198
Consumer | 90 Days or More Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due |  | 448
Consumer | Residential | Real estate first mortgage |  |
Past due aging analysis of loans |  |
Loans and Leases Receivable, Gross, Total | 456,737 | 457,155
Consumer | Residential | Real estate first mortgage | Performing |  |
Past due aging analysis of loans |  |
Accruing Current | 453,810 | 455,244
Nonaccrual | 764 | 797
Loans and Leases Receivable, Gross, Total | 456,737 | 457,155
Consumer | Residential | Real estate first mortgage | 30 - 89 Days Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due | 2,163 | 666
Consumer | Residential | Real estate first mortgage | 90 Days or More Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due |  | 448
Consumer | Residential | Real estate junior lien |  |
Past due aging analysis of loans |  |
Loans and Leases Receivable, Gross, Total | 154,351 | 177,373
Consumer | Residential | Real estate junior lien | Performing |  |
Past due aging analysis of loans |  |
Accruing Current | 153,907 | 176,915
Nonaccrual | 211 | 274
Loans and Leases Receivable, Gross, Total | 154,351 | 177,373
Consumer | Residential | Real estate junior lien | 30 - 89 Days Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due | 233 | 184
Consumer | Other revolving and installment |  |
Past due aging analysis of loans |  |
Loans and Leases Receivable, Gross, Total | 78,457 | 86,526
Consumer | Other revolving and installment | Performing |  |
Past due aging analysis of loans |  |
Accruing Current | 78,306 | 86,172
Nonaccrual | 39 | 6
Loans and Leases Receivable, Gross, Total | 78,457 | 86,526
Consumer | Other revolving and installment | 30 - 89 Days Past Due | Performing |  |
Past due aging analysis of loans |  |
Past due | $ 112 | $ 348

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