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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Loan Composition) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Receivables [Abstract]
Commercial real estate — owner occupied	$ 183,161		$ 176,459
Commercial real estate — non-owner occupied	468,778		473,158
Land development	46,500		56,638
Construction	104,515		101,206
Multi-family	124,488		92,762
1-4 family	38,922		45,651
Total commercial real estate	966,364		945,874
Commercial and industrial	437,955		450,298
Direct financing leases, net	29,216		30,951
Home equity and second mortgages	7,973		8,412
Other	17,976		16,329
Total consumer and other	25,949		24,741
Total gross loans and leases receivable	1,459,484		1,451,864
Allowance for loan and lease losses	21,677	$ 21,666	20,912	$ 18,154	$ 16,684	$ 16,316
Deferred loan fees	1,309		1,189
Loans and leases receivable, net	$ 1,436,498		$ 1,429,763

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The net investment in direct financing leases as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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