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Loans Receivable and Allowance for Loan Losses (Composition of Loans Receivable) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 706,593		$ 560,251
Deferred fees, net	(394)		(326)
Total loans receivable	706,199		559,925
Allowance for loan losses	(6,164)	$ (5,798)	(7,298)	$ (5,747)	$ (5,947)	$ (5,875)
Net loans receivable	$ 700,035		$ 552,627
Percent of Loans	100.00%		100.00%
Residential Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 237,897		$ 161,820
Allowance for loan losses	$ (1,056)	(976)	$ (1,069)	(987)	(1,085)	(1,323)
Percent of Loans	33.70%		28.90%
Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 315,270		$ 279,123
Allowance for loan losses	$ (4,363)	(4,191)	$ (5,506)	(4,178)	(4,152)	(3,890)
Percent of Loans	44.60%		49.80%
Construction Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 20,056		$ 18,987
Allowance for loan losses	$ (78)	(59)	$ (90)	(85)	(97)	(222)
Percent of Loans	2.80%		3.40%
Commercial, financial and agricultural loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 85,145		$ 71,090
Allowance for loan losses	$ (336)	(293)	$ (397)	(284)	(405)	(256)
Percent of Loans	12.10%		12.70%
Consumer loans to individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 48,225		$ 29,231
Allowance for loan losses	$ (331)	$ (279)	$ (236)	$ (213)	$ (208)	$ (184)
Percent of Loans	6.80%		5.20%

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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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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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

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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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Amount after allowance and 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 and loans held for sale.

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