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Loans and Allowance for Loan Losses - Past due aging analysis (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Past due aging analysis of loans |  |
Accruing Current | $ 2,045,533 | $ 1,711,189
Nonaccrual | 4,795 | 7,379
Loans and Leases Receivable, Gross, Total | 2,058,419 | 1,721,279
30 - 89 Days Past Due |  |
Past due aging analysis of loans |  |
Past due | 8,091 | 2,263
90 Days or More Past Due |  |
Past due aging analysis of loans |  |
Past due |  | 448
Commercial |  |
Past due aging analysis of loans |  |
Accruing Current | 1,347,650 | 992,858
Nonaccrual | 4,169 | 6,302
Loans and Leases Receivable, Gross, Total | 1,357,421 | 1,000,225
Commercial | 30 - 89 Days Past Due |  |
Past due aging analysis of loans |  |
Past due | 5,602 | 1,065
Commercial | Commercial and industrial |  |
Past due aging analysis of loans |  |
Accruing Current | 784,282 | 473,900
Nonaccrual | 2,840 | 4,862
Loans and Leases Receivable, Gross, Total | 789,036 | 479,144
Commercial | Commercial and industrial | 30 - 89 Days Past Due |  |
Past due aging analysis of loans |  |
Past due | 1,914 | 382
Commercial | Real estate construction |  |
Past due aging analysis of loans |  |
Accruing Current | 32,384 | 26,251
Loans and Leases Receivable, Gross, Total | 33,169 | 26,378
Commercial | Real estate construction | 30 - 89 Days Past Due |  |
Past due aging analysis of loans |  |
Past due | 785 | 127
Commercial | Commercial real estate |  |
Past due aging analysis of loans |  |
Accruing Current | 530,984 | 492,707
Nonaccrual | 1,329 | 1,440
Loans and Leases Receivable, Gross, Total | 535,216 | 494,703
Commercial | Commercial real estate | 30 - 89 Days Past Due |  |
Past due aging analysis of loans |  |
Past due | 2,903 | 556
Consumer |  |
Past due aging analysis of loans |  |
Accruing Current | 697,883 | 718,331
Nonaccrual | 626 | 1,077
Loans and Leases Receivable, Gross, Total | 700,998 | 721,054
Consumer | 30 - 89 Days Past Due |  |
Past due aging analysis of loans |  |
Past due | 2,489 | 1,198
Consumer | 90 Days or More Past Due |  |
Past due aging analysis of loans |  |
Past due |  | 448
Consumer | Residential | Real estate first mortgage |  |
Past due aging analysis of loans |  |
Accruing Current | 466,551 | 455,244
Nonaccrual | 457 | 797
Loans and Leases Receivable, Gross, Total | 469,050 | 457,155
Consumer | Residential | Real estate first mortgage | 30 - 89 Days Past Due |  |
Past due aging analysis of loans |  |
Past due | 2,042 | 666
Consumer | Residential | Real estate first mortgage | 90 Days or More Past Due |  |
Past due aging analysis of loans |  |
Past due |  | 448
Consumer | Residential | Real estate junior lien |  |
Past due aging analysis of loans |  |
Accruing Current | 152,111 | 176,915
Nonaccrual | 169 | 274
Loans and Leases Receivable, Gross, Total | 152,487 | 177,373
Consumer | Residential | Real estate junior lien | 30 - 89 Days Past Due |  |
Past due aging analysis of loans |  |
Past due | 207 | 184
Consumer | Other revolving and installment |  |
Past due aging analysis of loans |  |
Accruing Current | 79,221 | 86,172
Nonaccrual |  | 6
Loans and Leases Receivable, Gross, Total | 79,461 | 86,526
Consumer | Other revolving and installment | 30 - 89 Days Past Due |  |
Past due aging analysis of loans |  |
Past due | $ 240 | $ 348

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