Loans - Loan Categories and Past Due Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Financing Receivable, Recorded Investment, Aging [Abstract]
Loans receivable held-for-sale, net, not part of disposal group	$ 12,007	$ 150	$ 1,433
Recorded investment, past due	13,704	13,606	9,791
Current Loans	2,548,211	2,372,514	2,270,517
Total Loans	2,561,915	2,386,120	2,280,308
Loans 90 or More Days Past Due and Still Accruing Interest	901	253	457
Nonaccrual Loans	5,461	4,005	4,949
Commercial Portfolio Segment
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	416	213	192
Current Loans	276,255	150,447	138,139
Total Loans	276,671	150,660	138,331
Loans 90 or More Days Past Due and Still Accruing Interest	8	0	0
Nonaccrual Loans	163	81	58
Commercial Real Estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	1,481	592	328
Current Loans	531,551	509,949	489,946
Total Loans	533,032	510,541	490,274
Loans 90 or More Days Past Due and Still Accruing Interest	237	0	220
Nonaccrual Loans	1,439	326	248
Consumer
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	9,495	8,815	6,060
Current Loans	818,998	802,383	772,964
Total Loans	828,493	811,198	779,024
Loans 90 or More Days Past Due and Still Accruing Interest	505	0	45
Nonaccrual Loans	1,304	663	412
Residential
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	2,312	3,986	3,211
Current Loans	921,407	909,735	869,468
Total Loans	923,719	913,721	872,679
Loans 90 or More Days Past Due and Still Accruing Interest	151	253	192
Nonaccrual Loans	2,555	2,935	4,231
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	5,062	5,972	6,660
Financing Receivables, 30 to 59 Days Past Due \| Commercial Portfolio Segment
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	172	150	119
Financing Receivables, 30 to 59 Days Past Due \| Commercial Real Estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	0	0	0
Financing Receivables, 30 to 59 Days Past Due \| Consumer
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	4,696	5,670	4,935
Financing Receivables, 30 to 59 Days Past Due \| Residential
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	194	152	1,606
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	3,836	5,035	1,289
Financing Receivables, 60 to 89 Days Past Due \| Commercial Portfolio Segment
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	128	42	73
Financing Receivables, 60 to 89 Days Past Due \| Commercial Real Estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	0	266	0
Financing Receivables, 60 to 89 Days Past Due \| Consumer
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	3,227	2,700	948
Financing Receivables, 60 to 89 Days Past Due \| Residential
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	481	2,027	268
Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	4,806	2,599	1,842
Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial Portfolio Segment
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	116	21	0
Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial Real Estate
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	1,481	326	328
Financing Receivables, Equal to Greater than 90 Days Past Due \| Consumer
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	1,572	445	177
Financing Receivables, Equal to Greater than 90 Days Past Due \| Residential
Financing Receivable, Recorded Investment, Aging [Abstract]
Recorded investment, past due	$ 1,637	$ 1,807	$ 1,337

Amount of financing receivable 90 days or more past due and still accruing.

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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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