Amount of interest income on financing receivable on nonaccrual status.

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Amount of financing receivable not past due.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Loans and Allowance for Loan Losses - Past due aging analysis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Past due aging analysis of loans
Loans and Leases Receivable, Gross, Total	$ 1,979,375	$ 1,721,279
Interest income foregone on nonaccrual loans	500	400	$ 300
Performing
Past due aging analysis of loans
Accruing Current	1,969,285	1,711,189
Nonperforming
Past due aging analysis of loans
Nonaccrual	5,050	7,379
30 - 89 Days Past Due \| Performing
Past due aging analysis of loans
Past due	5,010	2,263
90 Days or More Past Due \| Performing
Past due aging analysis of loans
Past due	30	448
Commercial
Past due aging analysis of loans
Loans and Leases Receivable, Gross, Total	1,299,316	1,000,225
Commercial \| Performing
Past due aging analysis of loans
Accruing Current	1,291,918	992,858
Commercial \| Nonperforming
Past due aging analysis of loans
Nonaccrual	4,419	6,302
Commercial \| 30 - 89 Days Past Due \| Performing
Past due aging analysis of loans
Past due	2,949	1,065
Commercial \| 90 Days or More Past Due \| Performing
Past due aging analysis of loans
Past due	30
Commercial \| Commercial and industrial
Past due aging analysis of loans
Loans and Leases Receivable, Gross, Total	691,858	479,144
Commercial \| Commercial and industrial \| Performing
Past due aging analysis of loans
Accruing Current	689,340	473,900
Commercial \| Commercial and industrial \| Nonperforming
Past due aging analysis of loans
Nonaccrual	1,988	4,862
Commercial \| Commercial and industrial \| 30 - 89 Days Past Due \| Performing
Past due aging analysis of loans
Past due	500	382
Commercial \| Commercial and industrial \| 90 Days or More Past Due \| Performing
Past due aging analysis of loans
Past due	30
Commercial \| Real estate construction
Past due aging analysis of loans
Loans and Leases Receivable, Gross, Total	44,451	26,378
Commercial \| Real estate construction \| Performing
Past due aging analysis of loans
Accruing Current	44,451	26,251
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	563,007	494,703
Commercial \| Commercial real estate \| Performing
Past due aging analysis of loans
Accruing Current	558,127	492,707
Commercial \| Commercial real estate \| Nonperforming
Past due aging analysis of loans
Nonaccrual	2,431	1,440
Commercial \| Commercial real estate \| 30 - 89 Days Past Due \| Performing
Past due aging analysis of loans
Past due	2,449	556
Consumer
Past due aging analysis of loans
Loans and Leases Receivable, Gross, Total	680,059	721,054
Consumer \| Performing
Past due aging analysis of loans
Accruing Current	677,367	718,331
Consumer \| Nonperforming
Past due aging analysis of loans
Nonaccrual	631	1,077
Consumer \| 30 - 89 Days Past Due \| Performing
Past due aging analysis of loans
Past due	2,061	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	463,370	457,155
Consumer \| Residential \| Real estate first mortgage \| Performing
Past due aging analysis of loans
Accruing Current	461,179	455,244
Consumer \| Residential \| Real estate first mortgage \| Nonperforming
Past due aging analysis of loans
Nonaccrual	439	797
Consumer \| Residential \| Real estate first mortgage \| 30 - 89 Days Past Due \| Performing
Past due aging analysis of loans
Past due	1,752	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	143,416	177,373
Consumer \| Residential \| Real estate junior lien \| Performing
Past due aging analysis of loans
Accruing Current	143,060	176,915
Consumer \| Residential \| Real estate junior lien \| Nonperforming
Past due aging analysis of loans
Nonaccrual	165	274
Consumer \| Residential \| Real estate junior lien \| 30 - 89 Days Past Due \| Performing
Past due aging analysis of loans
Past due	191	184
Consumer \| Other revolving and installment
Past due aging analysis of loans
Loans and Leases Receivable, Gross, Total	73,273	86,526
Consumer \| Other revolving and installment \| Performing
Past due aging analysis of loans
Accruing Current	73,128	86,172
Consumer \| Other revolving and installment \| Nonperforming
Past due aging analysis of loans
Nonaccrual	27	6
Consumer \| Other revolving and installment \| 30 - 89 Days Past Due \| Performing
Past due aging analysis of loans
Past due	$ 118	$ 348