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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Non-accrual Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	$ 26,617	$ 20,613
Foreclosed properties, net	34	2,919
Total non-performing assets	26,651	23,532
Performing troubled debt restructurings	46	140
Total impaired assets	$ 26,697	$ 23,672
Total non-accrual loans and leases to gross loans and leases	1.24%	1.20%
Total non-performing assets to total gross loans and leases plus foreclosed properties, net	1.24%	1.37%
Total non-performing assets to total assets	1.04%	1.12%
Allowance for loan and lease losses to gross loans and leases	1.33%	1.14%
Allowance for loan and lease losses to non-accrual loans and leases	107.15%	94.70%
Commercial real estate — owner occupied
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	$ 5,429	$ 4,032
Commercial real estate — non-owner occupied
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	3,783	0
Land development
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	890	1,526
Construction
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	0	0
Multi-family
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	0	0
1-4 family
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	250	333
Total commercial real estate
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	10,352	5,891
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	16,155	14,575
Direct financing leases, net
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	49	0
Home equity and second mortgages
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	40	0
Other
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	21	147
Total consumer and other
Financing Receivable, Impaired [Line Items]
Non-accruing loans and leases	$ 61	$ 147

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Ratio of Allowance for Loan and Lease Losses to Total Gross Loans and Leases

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Carrying amount as of the balance sheet date of all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance; includes real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts.

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