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Loans and Leases and Allowance for Loan and Lease Losses - ALL by Loan Classification (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	$ 19,295	$ 18,310	$ 18,346	$ 18,817	$ 16,254	$ 10,243
All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	18,868		18,037
Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	427		309
Performing [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	18,282		17,800
Impaired Loans [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	586		237
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	9,405	8,382	7,579	7,729	6,595	4,508
Commercial Real Estate [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	9,344		7,579
Commercial Real Estate [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	61
Commercial Real Estate [Member] | Performing [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	8,927		7,579
Commercial Real Estate [Member] | Impaired Loans [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	417
Consumer Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	3,541	3,323	3,471	3,444	3,313	2,576
Consumer Real Estate [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	3,386		3,383
Consumer Real Estate [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	155		88
Consumer Real Estate [Member] | Performing [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	3,316		3,267
Consumer Real Estate [Member] | Impaired Loans [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	70		116
Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	2,218	2,061	2,076	2,060	1,795	1,127
Construction and Land Development [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	2,218		2,076
Construction and Land Development [Member] | Performing [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	2,218		2,076
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	3,801	4,442	5,107	5,463	4,443	1,957
Commercial and Industrial [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	3,592		4,889
Commercial and Industrial [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	209		218
Commercial and Industrial [Member] | Performing [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	3,493		4,768
Commercial and Industrial [Member] | Impaired Loans [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	99		121
Leases Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	225
Leases Portfolio Segment [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	225
Leases Portfolio Segment [Member] | Performing [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	225
Consumer and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	105	$ 102	113	$ 121	$ 108	$ 75
Consumer and Other [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	103		110
Consumer and Other [Member] | Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	2		3
Consumer and Other [Member] | Performing [Member] | All Other Loans and leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan and lease losses	$ 103		$ 110

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