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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	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Impaired
Non-accrual loans and leases	$ 31,091	$ 26,389
Foreclosed properties, net	1,484	1,069
Total non-performing assets	32,575	27,458
Performing troubled debt restructurings	249	332
Total impaired assets	$ 32,824	$ 27,790
Total non-accrual loans and leases to gross loans and leases	1.95%	1.76%
Total non-performing assets to total gross loans and leases plus foreclosed properties, net	2.04%	1.83%
Total non-performing assets to total assets	1.71%	1.53%
Allowance for loan and lease losses to gross loans and leases	1.31%	1.25%
Allowance for loan and lease losses to non-accrual loans and leases	67.32%	71.10%
Commercial real estate — owner occupied
Financing Receivable, Impaired
Non-accrual loans and leases	$ 9,994	$ 7,021
Commercial real estate — non-owner occupied
Financing Receivable, Impaired
Non-accrual loans and leases	31	34
Land development
Financing Receivable, Impaired
Non-accrual loans and leases	2,311	2,626
Construction
Financing Receivable, Impaired
Non-accrual loans and leases	1,879	2,872
Multi-family
Financing Receivable, Impaired
Non-accrual loans and leases	0	0
1-4 family
Financing Receivable, Impaired
Non-accrual loans and leases	569	1,161
Total non-accrual commercial real estate
Financing Receivable, Impaired
Non-accrual loans and leases	14,784	13,714
Commercial and industrial
Financing Receivable, Impaired
Non-accrual loans and leases	15,954	12,321
Direct financing leases, net
Financing Receivable, Impaired
Non-accrual loans and leases	0	0
Home equity and second mortgages
Financing Receivable, Impaired
Non-accrual loans and leases	0	0
Other
Financing Receivable, Impaired
Non-accrual loans and leases	353	354
Total non-accrual consumer and other loans
Financing Receivable, Impaired
Non-accrual loans and leases	$ 353	$ 354

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Impaired Assets

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

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Ratio of Allowance for Loan and Leases Losses to Non-accrual Loans and Leases

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Ratio of Total Nonperforming Assets to Gross Loans and Leases Plus Foreclosed Properties, Net

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Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 50
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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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