Loans, Net - Summary of loan classifications by class of loan (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	[1]	$ 773,090	$ 754,846
Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		729,877	699,812
Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		16,075	34,949
Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		25,049	19,367
Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		2,089	701
Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		0	17
Construction [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		30,781	33,050
Construction [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		23,788	25,637
Construction [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		6,433	6,764
Construction [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		560	649
Construction [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		0	0
Construction [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		0	0
Secured by farmland [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		19,505	19,708
Secured by farmland [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		11,004	11,203
Secured by farmland [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		0	7,903
Secured by farmland [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		8,501	602
Secured by farmland [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		0	0
Secured by farmland [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		0	0
Secured by 1-4 family residential [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		272,198	265,216
Secured by 1-4 family residential [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		262,946	255,898
Secured by 1-4 family residential [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		1,572	1,518
Secured by 1-4 family residential [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		6,782	7,348
Secured by 1-4 family residential [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		898	452
Secured by 1-4 family residential [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		0	0
Other real estate loans [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		265,892	255,236
Other real estate loans [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		251,176	232,169
Other real estate loans [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		6,607	15,687
Other real estate loans [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		6,922	7,380
Other real estate loans [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		1,187	0
Other real estate loans [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		0	0
Commercial [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		167,542	163,269
Commercial [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		165,897	159,595
Commercial [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		1,429	3,059
Commercial [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		216	369
Commercial [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		0	246
Commercial [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		0	0
Consumer loans [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		17,172	18,367
Consumer loans [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		15,066	15,310
Consumer loans [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		34	18
Consumer loans [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		2,068	3,019
Consumer loans [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		4	3
Consumer loans [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan		$ 0	$ 17

[1] Includes net deferred loan costs and premiums of $3.1 million and $3.0 million, respectively.