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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	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Receivables [Abstract]
Commercial real estate — owner occupied	$ 182,755		$ 176,459
Commercial real estate — non-owner occupied	461,586		473,158
Land development	41,499		56,638
Construction	115,660		101,206
Multi-family	125,080		92,762
1-4 family	40,173		45,651
Total commercial real estate	966,753		945,874
Commercial and industrial	447,223		450,298
Direct financing leases, net	28,868		30,951
Home equity and second mortgages	7,776		8,412
Other	17,447		16,329
Total consumer and other	25,223		24,741
Total gross loans and leases receivable	1,468,067		1,451,864
Allowance for loan and lease losses	19,923	$ 21,677	20,912	$ 20,067	$ 18,154	$ 16,316
Deferred loan fees	1,354		1,189
Loans and leases receivable, net	$ 1,446,790		$ 1,429,763

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Loans and lease receivable, gross Home equity loans and second mortgage loans

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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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