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Allowance for Loan Losses (Summary of Primary Segments of Loan Portfolio) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 965		$ 989
Collectively evaluated for impairment	864,335		826,091
Total Loans	865,300		827,080
Specific reserve allocation	524		520
General reserve allocation	9,248		9,103
Total allowance for loan losses	9,772	$ 9,717	$ 9,623	$ 9,582	$ 10,150	$ 10,104
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	473
Collectively evaluated for impairment	168,999		$ 139,126
Total Loans	169,472		$ 139,126
Specific reserve allocation	195
General reserve allocation	2,915		$ 3,262
Total allowance for loan losses	3,110	3,171	3,262	3,295	3,254	2,844
Commercial loans secured by real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	422		989
Collectively evaluated for impairment	417,746		409,340
Total Loans	418,168		410,329
Specific reserve allocation	259		520
General reserve allocation	3,762		3,382
Total allowance for loan losses	$ 4,021	4,140	$ 3,902	3,915	4,475	4,885
Real estate-mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment
Collectively evaluated for impairment	$ 257,530		$ 258,616
Total Loans	$ 257,530		$ 258,616
Specific reserve allocation
General reserve allocation	$ 1,392		$ 1,310
Total allowance for loan losses	1,392	1,321	$ 1,310	1,342	1,301	1,260
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	70
Collectively evaluated for impairment	20,060		$ 19,009
Total Loans	20,130		$ 19,009
Specific reserve allocation	70
General reserve allocation	207		$ 190
Total allowance for loan losses	$ 277	201	$ 190	151	145	136
Allocation for general risk [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Specific reserve allocation
General reserve allocation	$ 972		$ 959
Total allowance for loan losses	$ 972	$ 884	$ 959	$ 879	$ 975	$ 979

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A valuation allowance for financing receivables that are expected to be uncollectible.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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