Loans - Classification of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 657,754		$ 633,547
Allowance for loan losses	(8,925)	$ (8,974)	(8,591)	$ (8,645)	$ (7,995)	$ (7,981)
Loans, net	648,829		624,956
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	71,699		67,360
Allowance for loan losses	(1,185)	(752)	(648)	(1,036)	(1,139)	(1,117)
Agriculture & AG RE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	44,071		50,121
Allowance for loan losses	(103)	(119)	(97)	(65)	(50)	(69)
Construction, Land & Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	22,207		26,016
Allowance for loan losses	(452)	(516)	(523)	(396)	(437)	(711)
Commercial RE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	424,928		391,918
Allowance for loan losses	(5,243)	(5,541)	(5,681)	(5,185)	(4,018)	(3,999)
1-4 Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	91,629		95,227
Allowance for loan losses	(1,933)	(2,042)	(1,628)	(1,951)	(2,342)	(2,075)
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	3,220		2,905
Allowance for loan losses	$ (9)	$ (4)	$ (14)	$ (12)	$ (9)	$ (10)