Loans - Impaired Loans (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Loans with no related allowance recorded:
Recorded Investment	$ 480	$ 255
Unpaid Principal Balance	502	255
Average Recorded Investment	347	757
Interest Income Recognized	4	4
Cash Basis Interest Recognized	5	4
Loans with an allowance recorded:
Recorded Investment	3,797	5,838
Unpaid Principal Balance	4,105	7,268
Related Allowance	1,360	1,594
Average Recorded Investment	5,311	6,239
Interest Income Recognized	56	49
Cash Basis Interest Recognized	41	43
Recorded Investment, Total	4,277	6,093
Unpaid Principal Balance, Total	4,607	7,523
Average Recorded Investment, Total	5,658	6,996
Interest Income Recognized, Total	60	53
Cash Basis Interest Recognized, Total	46	47
Commercial | Closed-end
Loans with no related allowance recorded:
Recorded Investment	0	2
Unpaid Principal Balance	0	2
Average Recorded Investment	7	15
Interest Income Recognized	0	1
Cash Basis Interest Recognized	0	1
Loans with an allowance recorded:
Recorded Investment	173	127
Unpaid Principal Balance	173	127
Related Allowance	106	80
Average Recorded Investment	144	199
Interest Income Recognized	2	2
Cash Basis Interest Recognized	2	2
Commercial | Line of credit
Loans with no related allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Loans with an allowance recorded:
Recorded Investment	550	0
Unpaid Principal Balance	550	0
Related Allowance	458	0
Average Recorded Investment	150	0
Interest Income Recognized	13	0
Cash Basis Interest Recognized	12	0
Agriculture & AG RE
Loans with no related allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Loans with an allowance recorded:
Recorded Investment	319	0
Unpaid Principal Balance	319	0
Related Allowance	0	0
Average Recorded Investment	80	0
Interest Income Recognized	17	0
Cash Basis Interest Recognized	7	0
Construction, Land & Development
Loans with no related allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investment	0	299
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Loans with an allowance recorded:
Recorded Investment	142	127
Unpaid Principal Balance	433	419
Related Allowance	58	10
Average Recorded Investment	153	120
Interest Income Recognized	2	0
Cash Basis Interest Recognized	0	0
Commercial RE | Owner occupied
Loans with no related allowance recorded:
Recorded Investment	22	6
Unpaid Principal Balance	22	6
Average Recorded Investment	10	78
Interest Income Recognized	2	0
Cash Basis Interest Recognized	3	0
Loans with an allowance recorded:
Recorded Investment	600	406
Unpaid Principal Balance	600	541
Related Allowance	124	100
Average Recorded Investment	469	586
Interest Income Recognized	7	11
Cash Basis Interest Recognized	8	9
Commercial RE | Non-owner occupied
Loans with no related allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Loans with an allowance recorded:
Recorded Investment	441	4,076
Unpaid Principal Balance	441	4,955
Related Allowance	209	1,078
Average Recorded Investment	2,928	4,101
Interest Income Recognized	0	17
Cash Basis Interest Recognized	0	17
1-4 Family Residential | Senior Lien
Loans with no related allowance recorded:
Recorded Investment	262	176
Unpaid Principal Balance	284	176
Average Recorded Investment	231	277
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Loans with an allowance recorded:
Recorded Investment	1,110	859
Unpaid Principal Balance	1,127	984
Related Allowance	253	215
Average Recorded Investment	1,063	1,003
Interest Income Recognized	11	14
Cash Basis Interest Recognized	8	10
1-4 Family Residential | Jr. Lien & Lines of Credit
Loans with no related allowance recorded:
Recorded Investment	196	71
Unpaid Principal Balance	196	71
Average Recorded Investment	99	88
Interest Income Recognized	2	3
Cash Basis Interest Recognized	2	3
Loans with an allowance recorded:
Recorded Investment	459	242
Unpaid Principal Balance	459	242
Related Allowance	149	110
Average Recorded Investment	323	230
Interest Income Recognized	4	5
Cash Basis Interest Recognized	4	5
Consumer
Loans with no related allowance recorded:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Cash Basis Interest Recognized	0	0
Loans with an allowance recorded:
Recorded Investment	3	1
Unpaid Principal Balance	3	0
Related Allowance	3	1
Average Recorded Investment	1	0
Interest Income Recognized	0	0
Cash Basis Interest Recognized	$ 0	$ 0