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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	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Impaired
Non-accrual loans and leases	$ 37,519	$ 25,194
Foreclosed properties, net	1,472	1,472
Total non-performing assets	38,991	26,666
Performing troubled debt restructurings	702	717
Total impaired assets	$ 39,693	$ 27,383
Total non-accrual loans and leases to gross loans and leases	2.53%	1.74%
Total non-performing assets to total gross loans and leases plus foreclosed properties, net	2.63%	1.83%
Total non-performing assets to total assets	2.17%	1.50%
Allowance for loan and lease losses to gross loans and leases	1.46%	1.44%
Allowance for loan and lease losses to non-accrual loans and leases	57.75%	83.00%
Commercial real estate — owner occupied
Financing Receivable, Impaired
Non-accrual loans and leases	$ 5,433	$ 2,223
Commercial real estate — non-owner occupied
Financing Receivable, Impaired
Non-accrual loans and leases	1,979	1,609
Land development
Financing Receivable, Impaired
Non-accrual loans and leases	3,355	3,440
Construction
Financing Receivable, Impaired
Non-accrual loans and leases	4,602	2,918
Multi-family
Financing Receivable, Impaired
Non-accrual loans and leases	0	0
1-4 family
Financing Receivable, Impaired
Non-accrual loans and leases	1,911	1,937
Total non-accrual commercial real estate
Financing Receivable, Impaired
Non-accrual loans and leases	$ 17,280	$ 12,127
Allowance for loan and lease losses to gross loans and leases	1.33%	1.31%
Commercial and industrial
Financing Receivable, Impaired
Non-accrual loans and leases	$ 19,545	$ 12,463
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	694	604
Total non-accrual consumer and other loans
Financing Receivable, Impaired
Non-accrual loans and leases	$ 694	$ 604
Allowance for loan and lease losses to gross loans and leases	3.34%	2.26%

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-Publisher FASB
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