Loans, Net - Consolidated loan portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Consolidated Loan Portfolio [Abstract]
Outstanding Balance, Gross	$ 845,890	$ 805,681	$ 780,867
Less allowance for loan losses	11,200	11,046	11,400	$ 11,786
Net loans	$ 834,690	$ 794,635
Percent of Total Portfolio	100.00%	100.00%
Net of deferred loan costs	$ 3,700	$ 3,500
Construction [Member]
Consolidated Loan Portfolio [Abstract]
Outstanding Balance, Gross	32,519	39,673	33,381
Less allowance for loan losses	$ 883	$ 905	780	550
Percent of Total Portfolio	3.80%	4.90%
Secured by farmland [Member]
Consolidated Loan Portfolio [Abstract]
Outstanding Balance, Gross	$ 16,832	$ 19,062
Percent of Total Portfolio	2.00%	2.40%
Secured by 1-4 family residential [Member]
Consolidated Loan Portfolio [Abstract]
Outstanding Balance, Gross	$ 332,408	$ 280,096	273,176
Less allowance for loan losses	$ 3,617	$ 3,341	3,835	3,966
Percent of Total Portfolio	39.30%	34.80%
Other real estate loans [Member]
Consolidated Loan Portfolio [Abstract]
Outstanding Balance, Gross	$ 250,778	$ 258,035	258,012
Less allowance for loan losses	$ 3,468	$ 3,761	3,730	3,916
Percent of Total Portfolio	29.70%	32.00%
Commercial loans [Member]
Consolidated Loan Portfolio [Abstract]
Outstanding Balance, Gross	$ 193,826	$ 190,482	179,907
Less allowance for loan losses	$ 2,136	$ 1,706	1,691	2,354
Percent of Total Portfolio	22.90%	23.60%
Consumer loans [Member]
Consolidated Loan Portfolio [Abstract]
Outstanding Balance, Gross	$ 19,527	$ 18,333	17,000
Less allowance for loan losses	$ 951	$ 1,141	$ 1,173	$ 821
Percent of Total Portfolio	2.30%	2.30%

The percentage of total loan portfolio during the period.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

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-Publisher FASB
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section L
-Subsection 1

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6378556&loc=d3e10152-111534

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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.

+ References

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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